5000 watt power inverters How to choose inverter products

Car inverter is a work in high-current, high-frequency environment power products, the potential failure rate is very high. Therefore, consumers must be careful when DC AC power inverters‍ buying. First, from the inverter output waveform selected, preferably not less than quasi-sine wave; secondly, to have a complete circuit of the inverter protective function; Third, manufacturers have a good after-sales service commitment; fourth, circuits and products have been tested over time. 

Inverter, inverter device must be composed of a thing to so called, the difference between him and the transformer directly, that is, he can achieve a DC input and output A‍C, working principle and switching power supplies the same, but the oscillation frequency in within a certain range, for example, if the frequency is 50HZ, output was AC 50HZ. The inverter frequency can be changed in the device. 

Transformers generally refers to a device-specific frequency bands, such as frequency transformer, the transformer is that we usually see, they both inputs and outputs solar power inverter‍ must be within a certain range, for example, can work within the 40-60HZ range.

5000 watt power inverters Quasi-sine wave inverter can be used in which electrical

Also divided into several quasi-sine wave, square wave from almost the same square wave to sine wave closer rounded trapezoidal wave. We discuss here only a square wave, Inverter thermal design‍ waveform which is currently the most commercially available high-frequency inverter can provide. Such quasi-sine wave inverter can be used in notebook computers, televisions, modular stereos, camcorders, digital cameras, printers, various chargers, the palm computers, game consoles, DVD players, mobile DVD, home treatment device and so on, the larger the inverter output power can also be used in small electric appliances such as hair dryer, electric cup, kitchen appliances and so on. But for inductive load class appliances such as refrigerators, electric drills, etc. are not prolonged use of quasi-sine wave inverter power supply. Otherwise, it may cause damage or shorten the life expectancy of the inverter and related electrical products. If you must use DC AC power inverters‍ an inductive load, suggested the use of reserve power larger quasi-sine wave inverter, as the site offers large peak power inverter. Here, the focus here on quasi-sine wave inverter used in TV (traditional display class) examples. TV inverter has the following three requirements: First, the TV in the boot, degaussing circuit for electricity demand has great moments, so the peak power inverter demanding. For example, a 25-inch digital TV, the power consumption under normal operating conditions is about 80 watts, while the boot instantly power up to 1450 watts. Second, because the television field frequency equal to the frequency of the AC power, the AC inverter output frequency must be accurate. Third, the inverter should not interfere with the TV. Even if it can satisfy the Pure sine wave power inverter above three conditions, the TV when using quasi-sine wave AC power, the screen will still have a few fixed interference pattern, the color will be slightly greenish (when using the old-fashioned TV, cast the situation is more serious), but the other is no different.

4000 watt power inverters How should connect the inverter and the power supply and the load

A: The use of electrical appliances 150 watts vehicle power inverters‍ to 150 watts can be directly plugged into the inverter plug the cigarette lighter socket after use. More than 150 watt inverter via alligator clips directly to the battery wires, the battery positive red wire, black wire to the battery negative (not reversed, remember!) If the battery power is far away from the place, connect the inverter principle is: an inverter with battery 24 volt power inverters‍ connections should be as short as possible, and 220 VAC output lines longer anyway.

3000 watt power inverters What is "inductive load"

In layman's terms, that the application of DC AC power inverter‍ electromagnetic induction principle of making high-power electrical products, such as motors, compressors, relays, fluorescent lights, and so on. These products need when starting a ratio to maintain normal operation (about 3-7 times) required a much larger current starting current. For example, a refrigerator power consumption during normal operation of about 150 watts, its starting power up to 1000 watts or more. In addition, due to the inductive load in an instant power or disconnect the power supply, will produce back-EMF voltage, peak voltage of this inverter can withstand far greater than the voltage value, it is easy to vehicle power inverters‍ cause instantaneous inverter overload affect the service life of the inverter. Thus, higher electrical power supply waveform such requirements.

8000 watt power inverters Divided by the output waveform, the inverter is divided into several categories

 The two main types, one is the sine wave inverter, and the other is a square wave inverter. Sine wave inverter output power is the same as we use every day or even 6000 watt power inverters‍ better sine wave AC power because it does not exist in the electromagnetic pollution. The square wave output of the inverter is the poor quality of the square wave alternating current, the positive maximum to the negative maximum value to almost simultaneously generated, so resulting in a dramatic effect on the instability of the inverter and the load itself. At the same time, its load capacity is poor, only 40-60% of the rated load, not with inductive load (explained in detail below article). If the load carried by large, square-wave current third harmonic components contained enable capacitive currents flowing into the load increases, and in severe damage to the load of the power supply filter capacitor. For the above disadvantages, in recent years a quasi-sine wave (or modified sine wave, modified sine wave, sine-wave, etc.) of the inverter, the output waveform from the positive maximum to a negative maximum time between intervals, using the results improved, but is still quasi-sine wave by the broken line, belonging to the scope of the square wave, continuous bad. In conclusion, the sine wave inverter providing high-quality alternating current, can bring any kind of load, but the technical requirements and costs are high. Quasi-sine wave inverter can meet most of our electricity demand, high efficiency, low noise, moderate prices, and thus become the market mainstream products. DC AC power inverter‍ Square wave inverters produced using simple multivibrator, which belongs to the level of technology in the 1950s, will gradually withdraw from the market.

6000 watt power inverters What is the inverter, what role it

Simply put, the inverter is a low-voltage (12 or 24 volt) DC into 220 volts 12v power inverter‍ AC electronic devices. Because we usually rectified to 220 volts AC into DC to use, and the role of the inverter on the contrary, hence the name. We are in a "mobile" era, mobile office, mobile communications, mobile leisure and entertainment. In moving state, people not only need low voltage direct current from a battery or battery supply, 6000 watt power inverters‍ but we need more indispensable in our daily environment 220 volts AC inverter to meet us this demand.

5000 watt power inverters Power inverter Profile

Inverter (inverter) is the DC power (battery, storage battery) Car inverter knowledge‍ into alternating current (typically 220v or 380V50HZ sine or square wave). Emergency power, the general is to reverse into 220v DC bottle exchange. 

The power inverter is 12V or 24V DC power (battery, storage battery) into alternating current (typically 220v50HZ sine or square wave), typically used for substations, changed me, to provide emergency power for the high-voltage cabinet cabinet, this products are high-voltage inverter. 

Popular speaking, the inverter is a Off grid inverters‍ direct current (DC) into alternating current (AC) devices. It consists of inverter bridge, and filter control logic path component.

4000 watt power inverters Automotive Power

Car power inverter power called, is a way to convert the DC power DC12V and AC220V AC mains the same, for general electrical use, is a convenient power converters, as DC AC power inverters‍ commonly used in the automotive named. General use car power car battery or cigarette lighter power supply, the first such low-voltage direct current is converted to DC 265V or so; then is the real transformation stage, it will transform high voltage DC to AC 220V, 50Hz for. With the car power, you can put all the family moved to the car using small appliances such as mobile phones, laptop computers, digital cameras, car refrigerators, cameras, DVD, etc., thus making the car there is a feeling of home away from home . Since its launch, many limitations of using those appliances in the car will no longer exist, people can really enjoy, "and family-friendly, connected with the world" feeling. 

Car power not only apply to vehicle systems, as long as there are occasions DC12V DC power supply, power inverter can be used, will convert DC12V AC220V AC, bring convenience to people's lives. Car power fully take into account the external environment, when an overload or short circuit protection will be automatically shut down. The output voltage of the power supply through the feedback confirmed the car itself can make the voltage stability, voltage variation is less than the rated load and 10V. It should be noted that the purpose of the automobile is the output power and the same mains voltage to meet the needs of appliances, automotive power actually output is an analog sine wave and 12 volt inverter‍ the sine wave of the mains is true, the two slightly different , generally do not affect the use, it is the working principle of automotive power decision.

3000 watt power inverters Turn on the power car

A. B. The main purpose of starting the vehicle comes with lights that can be used to start the vehicle at night to play Operation C. D. apply to emergency self and family, and ships with a backup power supply 12V and 220V chargers E. F. electricity and access can be detected 12V small appliances using all three main functions: 1, emergency start the car: When the car failed to start due to the battery power shortage car, DC AC power inverters‍ you can start the car emergency. 2, Maintenance Lighting: own lights, car maintenance can be illuminated at night. 3,12 V Power Output: built cigarette lighter socket, you can output 12V DC. 4, with the car inverter, 220V power to become mobile. 5, easy to charge with car charger and 220V charger, charging both at home and can also be charged in the car.

8000 watt power inverters inverter power

 In the medium and large -capacity photovoltaic system , inverter power output should be less distortion sine wave . This is due in large capacity systems, the use of a Off grid inverters‍ square wave power supply , the output will contain more harmonics , high harmonics will generate additional losses , load a lot of photovoltaic systems for communications or instrumentation, these equipment on the grid have higher quality requirements, among the large-capacity photovoltaic power generation system and network operation , in order to avoid contamination of public electricity grid, also called a sine wave inverter output current. DC inverter into alternating current, if the DC voltage is low, the AC transformer step through that get the standard AC voltage and frequency. Large -capacity inverter, due to a higher DC bus voltage, the AC output is generally not required that can achieve step-up transformer 220V, in the small -capacity inverter, due to low DC voltage, such as 12V, 24V, it must be designed to boost circuit. Medium and small -capacity inverters generally have a push-pull inverter circuit, full-bridge inverter circuit and high frequency boost inverter circuit are three push-pull circuit , the step-up transformer neutral plug connected to the positive supply , two power tubes alternatively , the output AC power is obtained , since the ground side of the power transistor connected to the drive control circuit is simple and , in addition to the transformer has a leakage inductance to limit the short circuit current, thereby increasing the reliability of the circuit . The disadvantage is that the use of low transformers, inductive load driving ability is poor . Full-bridge inverter circuit to overcome the shortcomings of the push-pull circuit , the pulse width of the power transistor to regulate the output , i.e., the output AC voltage RMS change. Since the circuit has continued flow loop , even for inductive load , the output voltage waveform is not distorted . The disadvantage of this circuit is that the upper and 6000 watt power inverters‍ lower arm of the power transistor is not common ground , and therefore must be used exclusively drive circuit or the use of isolated power .

8000 watt power inverters Three-phase inverter operating instructions

Use to avoid injury or accident, AC power inverters‍ please strictly follow the following instructions to use or installation. 

(1) When installing the inverter to be operated by professionals, or by a local dealer to help complete. 

(2) verify that the DC power supply voltage range meets the requirement, the voltage polarity is correct. 

Note: Make sure the load voltage input range that meets the requirements of the three-phase 5-wire 380AC, and to ensure that the phase sequence is properly connected to the output jack 

(3) Do not put liquid into the interior of Off grid inverters‍ the inverter, or wet wipe machine casing. When the body can not directly run the machine 

3000 watt power inverters should be placed in what kind of environment?

3000w inverter during the design, they will be in use after the problem occurs in which to consider some aspects of it have been adjusted, and some can not be changed will make related note, to remind users to pay more when vehicle power inverters using attention.
But to say that this article 3000w inverter placed on the environment this problem, then the first is the role itself that is the current conversion, then certainly should not be placed in damp places will be, or else in the boot, it will fire occurred the danger, if wet, then we have to dry after use. That is also the case there should not be placed in a lot of dust or condensation is easy to say where, or else it will destroy the internal structure, the best that can be dated to between the temperature being minus fifty degrees, such temperatures are more suitable inverter 3000w. And say let the kids to touch this 6000 watt power inverters, otherwise will cause some damage, not enough people are also technically not touch 3000w inverter, otherwise misuse it, the device will also be affected.
Above that is 3000w inverter should be placed on the environment on this matter, hoping to be helpful to the user, to avoid the occurrence of similar dangers.

Car Power Profile

Power Inverter Car Power called , is a way to convert the DC power DC12V and AC220V AC mains the same , for general electrical use , is a convenient power converters , as commonly used in the automotive named.
The inverter is a way to convert the DC power DC12V and AC220V AC mains the same , for general electrical use , is a convenient power converters , as commonly used in the automotive named. 2.DC/DC DC converter power supply , which is usually the car battery 12VDC or 24VDC to 5000 watt inverter 48VDC converted to direct current electrical equipment such as a car.
Car power general use car battery or cigarette lighter power supply , the first such low-voltage direct current is converted to DC 265V or so ; then is the real transformation stage , it will transform high voltage DC to AC 220V, 50Hz for . With the vehicle power supply , you can put all the family moved to the car using small appliances such as mobile phones , laptop computers, digital cameras , car refrigerators, cameras , DVD , etc., thus making the car there is a feeling of home away from home . Since its launch , many limitations of using those appliances in the car will no longer exist , people can really enjoy , " and family -friendly, connected with the world " feeling .
Car power not only apply to vehicle systems , as long as there are occasions DC12V DC power supply , power inverter can be 4000 watt power inverter used , will convert DC12V AC220V AC, bring convenience to people's lives . Car power fully take into account the external environment , when an overload or short circuit protection will be automatically shut down. The output voltage of the power supply feedback to confirm vehicle itself can make the voltage stability, voltage variation is less than the rated load and 10V. It should be noted that the purpose of the vehicle power supply output and the same mains voltage to meet the needs of appliances , but actually the vehicle power supply output is an analog sine wave and the sine wave of the mains is true , the two slightly different , generally do not affect the use, which is the principle vehicle power supply decisions .
Select the vehicle power supply in addition to the price factor to consider is the main vehicle power requirements for the size of the input voltage and output power , in addition to a variety of use due to the large difference in electrical power , so to select the vehicle power supply according to needs, the principle is enough used mainly.

Multi-stage injection current source inverter

The concept of harmonics injected power converters have been used in the history of half a century . But the harmonic injection for power converter as a way to reduce the harmonic content . Multi-stage injection current amplitude and phase matching conditions of work , through the use of additional thyristor trigger control and achieve a natural commutation ripple voltage , frequency and phase of the injected current synchronized with the power supply . Based on the fixed relationship between the amplitude of the injected current and direct current , the optimal harmonic suppression is guaranteed for all operating conditions , the DC voltage waveform and the alternating current waveform quality is further improved. In the literature , the concept of a new injection of DC current , and found six times the fundamental frequency of the injected current with the pulse current source converter 12 can play full effect of suppressing harmonics . Which research methods to find unconventional system of injection current waveform amplitude , so as to achieve a minimum harmonic distortion rate . And rigorous mathematical analysis summarized this idea , the ability to completely eliminate export standard 12-pulse current source  2000 watt power inverter   AC output waveform measured ideal harmonic injection waveform. 12-pulse current source converter , the operating mode of the main circuit and the general three-phase full-controlled bridge converter same , each bridge in six 60 ° intervals sequentially triggered thyristor conduction, each main switch is turned on 120 bridge °. Thus, for two parallel three-phase full -controlled bridge , the bridge every 30 ° to trigger a switch arm , any time there are two switch conduction. It does not change with the AC system voltage , system synchronization and communication connections can also be run as a rectifier and an inverter operation . When the active power fed from the AC system to the DC system , the state of the rectifying operation of the apparatus , when the conveying system to the alternating current from the active system , the device in the inverter state . Multi-stage injection current source  Off grid inverter  (MLCR-CSC) DC voltage can be positive or negative, the converter requires the use of a switching device with symmetrical features , namely bi-directional voltage blocking capability and unidirectional current flow capacity of the device has . So IGBT can not be directly used for MLCR-CSC, diode and IGBT series to meet this performance requirement , but the device will cause a series of additional power loss. Since MLCR-CSC relatively low switching frequency, suitable for high-power thyristors MLCR-CSC. Due to the presence of DC side inductance , making DC current flow in one direction , while the DC voltage polarity may change instantaneously , so the multi-stage injection current source inverter switching devices need to be bi-directional voltage blocking capability and unidirectional current flow capacity .

Impact crusher Precautions

1, regular observation opens the door to observe the impact of downtime Sand internal wear, center feed tube , cone hat, the impeller , indecent Road liner , circular shield , the degree of wear wearable pieces of worn should be replaced or repair, replacement should be replaced at the same time wearable pieces , wearable pieces to ensure the same weight . Crusherm ppt solar controllers  work process open the door to observe the inner workings of observation is strictly prohibited , to avoid danger. Timely replacement of worn impeller body found find manufacturers repair. Special attention , without the consent of the manufacturer is prohibited without permission homemade impeller.

2 , Sand to 400 hours of work time should be added the right amount of grease to work until 2000 hours when necessary to open the Order of the spindle assembly for cleaning , and must be replaced if the time to work after 7200 hours bearing it.

3 , the drive belt tensioning Triangle car inverters  appropriate size should be adjusted to ensure that the tape should be grouped matching triangle , then its length as consistent as possible in each group . They should be adjusted to the difference between the two motor current does not exceed 15A.

4 , during operation , due to the high speed devices belonging Sand , particular attention should be safe . The staff should stay away from the device , then the For machine repairs must only be carried out after a power failure .

True and noise waveform off the degree of photovoltaic power systems and networking -type photovoltaic power generation system inverter control function is also very major skills .

( 1 ) should have enough additional output capacity and load order . Inverter selection, from the primary thinking has enough extra capacity to meet peak load requirements of electric power equipment . Load on a single device for the inverter , the extra capacity extractor relatively simple, when electrical equipment is purely resistive load orDC AC power inverters power factor greater than 0.9, the extractor additional ca pacity inverter power equipment capacity from 1.1 to 1.15 times can be. To multiple devices in the inverter when the load capacity of the inverter to disconnect the electrical equipment is also thinking about a few tasks Off grid inverters  can , ie \ load also factor \ .
( 2 ) should have a higher voltage constant function. In the off-grid PV systems are battery energy storage devices. When the nominal voltage of 12V battery in the form of a floating charge , terminal voltage up to 13.5V, the short time overcharge shape up 15V. When the battery terminal voltage with load discharge end can be reduced to 10.5V or less. The terminal voltage of the battery is about 30% of nominal voltage up to the rugged

The principle of solar inverters

Usually convert ac power to dc can call rectification, the process of phase controlled rectifier is one of the most common ac to dc conversion process; And call direct current process which can transform into ac power inverter, it is the inverse process of rectification. In the inverter circuit, according to the properties of the load, inverter can be divided into active and passive inverter inverter. If the ac side of the circuit to the ac power, convert direct current (dc) can pass straight - communication, inverter to the ac power up with frequency alternating current (ac) to return to the grid, called active inverter. The corresponding device is called active inverter, control Angle is greater than 90 ° phase rectifier for common active inverter. And direct current (dc) can transform into ac power, directly to the power supply circuit, power supply load is called passive inverter circuit, also known as the frequency converter.
Inverter type has separately excited, self-excitation inverter,  2000 watt power inverter  pulse width modulation (PWM) inverter. Which he excitation voltage source inverter need external communication, provide thyristor rectifier voltage. He wound inverter is mainly used in high power grid; Whose power is less than 1 mw photovoltaic power generation systems, mainly adopts the way of self-excitation inverter. Self-excited does not require an external voltage source inverter, rectifier voltage by the  2500 watt power inverter  part of the energy storage element (such as capacitance) to provide or by increasing stay shut off rectifier valve (like MOSFET and IGBT) resistance value. Be self-excited pulse modulation inverter output voltage is called the pulse inverter. This kind of inverter pulse switching times, by increasing the cycle to reduce the harmonic content of voltage and current; Harmonic content was positively than with pulse switching times. At present, the output of the grid inverter control mode there are two main types: voltage type control mode and current mode control mode. Voltage type control mode based on the principle of the output voltage controlled quantity, as the system output voltage and power grid of the same frequency and phase of voltage signal, the whole system is equivalent to a controlled voltage source internal resistance is small; The principle of current mode control mode is output inductor current as control target, the system output voltage and power grid of the same frequency and phase current signal, the whole system is equivalent to a larger internal resistance of the controlled current source.
At present, there are many kinds of solar inverters, topology structure, the most common of which are used for single-phase half bridge, bridge and HerIC (Sunways patent) inverter, as well as six pulse for the three-phase bridge and midpoint clamping (NPC) inverter. Solar inverter four commonly used the typical architecture of full bridge topology of the switch

Frequency inverter maintenance Cautions

1) UPS should be noted that the use of a well-ventilated environment, conducive to heat and keep the environment clean.
2) Do with  6000 watt power inverters  loads, such as cash registers, fluorescent lights, air conditioning, etc., to avoid damage.
3) UPS output load control in about 60% for the best, highest reliability.
4) UPS load is too light (eg 1000VA, 100VA UPS with load) may cause deep discharge of the battery will reduce the battery life, should be avoided.
5) appropriate discharge, helps cell activation, such as long-term non-stop electricity, every  2500 watt power inverter  months to be artificially broken mains load discharge time with UPS tape, so you can extend the battery life.
6) For most small UPS, go to work and then open the UPS, to avoid load at boot time to start, should work to close UPS; For network room UPS, because the majority of the network is 24 hours, so the UPS must run around the clock.
7) UPS should be charged after discharge to prevent battery damage due to excessive self-discharge.

How to choose a good inverter power devices

Select essential elements of the inverter main power is currently using more power components Darlington power transistor (GTR), power FET (4000 watt power inverter), insulated gate transistor (IGBT) and a turn-off thyristor (GTO) and the like. Used in small volume, low pressure systems more devices to MOSFET, because the MOSFET has a low on-state voltage drop and higher switching frequencies; capacity in the high-pressure system in general IGBT modules are used, this is because as the voltage MOSFET 5000 watt inverter its on-state resistance also increased, while the IGBT has a large advantage in the capacity of the system; while large capacity (100KVA and above) systems, in general, are used GTO as power components.

Power Inverter Features

1 , the use of advanced dual- CPU single chip dedicated intelligent control technology , high reliability ,
   Features low failure grid inverters ; control circuit is simple, reliable, and fast response to external environment
   Changes ;
2 , the output frequency stabilization , filter out noise , low distortion pure sine wave ; regulator
   High precision ;
3 , load capacity, load compatibility , built-in bypass switch , improved power Off grid inverter
   Source of supply continuity and reliability ;
4 , and low noise , low no-load loss , high efficiency AC power inverters, high machine efficiency
5 , the DC input power using advanced noise suppression technology anti-irrigation , direct and other shared
   Flow -screen communication devices interfering, AC input using multiple filtering to eliminate
   Interfere with the electricity grid , the system needs to meet the application needs of the primary AC power ;
6 , with perfect protection functions ( over- load protection , internal over- temperature protection , output short
   Circuit protection , input under-voltage protection, input overvoltage protection ) , greatly improving product
   Reliability ;
7 , materials used sophisticated , real materials , advanced manufacturing technology , beautiful ;
8, the cooling fan intelligent control, CPU control the working status of the cooling fans , greatly
   Extend fan life and save energy, improve work efficiency ;
9 , fully automated maintenance , no one on duty stations .
10 year product warranty ( repair rate is very low ) , and lifetime maintenance.

Inverter role ?

Is the DC power ( battery , storage battery ) into alternating current ( typically 220v50HZ sine or square wave ) . Popular speaking , the 4000 watt power inverter is a direct current (DC) into alternating current (AC) devices. It consists of inverter bridge , and filter control logic circuit .Widely used in air conditioners, home theater, electric wheel, power tools , sewing machines , DVD, VCD, computers, televisions, washing machines , range hoods , refrigerators , VCRs, massage , fans, lighting and so on.Briefly, the inverter is a low voltage ( 12 or 24 volts or 48 volts ) power to an electronic device 220 volts alternating current. Because we usually rectified to 220 volt inverter olts AC into DC to use, and the role of the inverter on the contrary, hence the name. We are in a "mobile " era , mobile office, mobile communications, mobile leisure and entertainment. In moving state , people not only need low voltage direct current from a battery or battery supply , but we need more indispensable in our daily environment 220 volts AC inverter to meet us this demand.

Introduces the working principle of the inverter

Transformer is a kind of DC to AC transformer, it in fact and converter is a process of voltage 6000 watt power inverters. The converter is the transformation of the city power grid AC voltage is 12V DC 4000 watt power inverter, and the 12V output DC voltage Adapter into high-voltage alternating current frequency; two parts are also using a pulse width modulation more with the current (PWM) technique

Research on the problem of SPWM inverter

Three phase bridge AC power inverters circuit, the earth with bipolar SPWM modulation technology. Any power switch solid tube are there exists a turn-on and turn off time, to ensure not to attack through the wrong switch tube unified bridge under the arm, the earth the fantasy SPWM drive signal rising edge Off grid inverter(or falling) off a period of time (called Td dead time). The dead zone is accepted in order to guarantee the safe and reliable operation of switching devicesway.

Power Inverters

Power inverters produce one of three types of power wave signals. Each signal represents a quality of power output. The first set of 2000 watt power inverter made which are now obsolete produced a Square Wave signal. Square Wave signals produced power that was not reliable or consistent

WT600 pure sine wave inverter

Application areas: 1 pure single-phase sine wave Solar power inverters system 2 photovoltaic, wind power generation system UPS system 3 uninterrupted 4 single-phase motor speed control system of 5 single phase inverter system 6 sine wave dimming system 7 sine wave generating system of 9 welding 2500 watt power inverter system 8 sine wave current transformer system

power inverter

Inverter, an 24 volt power inverters device must be something to so called, he and transformer has a direct difference, that is to say, he can realize the input and output DC, AC, working principle and switch power source, but the shock frequency in a certain range, for example if the frequency is 50HZ, the output is for the exchange of 50HZ. The 220 volt power inverters is can change its frequency equipment.

8000 watt power inverters using Construction of photovoltaic power generation system

1 Overview

At present, China is implementing a sustainable development strategy , efforts to build a resource-saving and environment-friendly society , actively advocated and efforts to promote low-carbon economic development model . Photovoltaic technology for sustainable development as the most desirable characteristics of renewable energy technologies in recent years, with the strong support of the state has been developing rapidly . China's energy consumption as higher hospital public service agencies, and conservation work in the future energy conservation in the face of greater pressure , and actively explore green hospital construction and development model , to effectively improve the level of hospital construction , and promote the concept of green building and scientific use of energy saving technologies is particularly important .

2 Compared with conventional micro inverter inverter
2.1 Traditional inverters
Currently PV systems commonly used in the electrical structure diagram , there are several programs generally centralized , string , multi -string , etc., shown in Figure 4-1 .

Three systems , the maximum power point tracking system is carried out for the entire string , each of the components are not guaranteed to run at the maximum power point , each PV module can not obtain the status information ; other hand, the mounting surface of each of the actual direction and angle of the mounting components are not necessarily the same , the generation efficiency of the individual components are not identical to each other , a centralized maximum power point tracking , reduces the power generation efficiency of the system . When concentrated photovoltaic system to cover the actual measurement of the energy loss shown in Figure 4-2 , the data show 3% had covered 25% of the photovoltaic energy loss .

2.2 micro-inverter
Micro-inverter grid technology proposed direct integration with a single inverter PV modules , PV modules for each individual with an AC-DC converter with functionality and maximum power point tracking inverter module , power will be sent directly to the PV modules converted into AC power for use or transport the AC load to the grid . Figure 4-3 :

Micro inverter to replace the traditional centralized inverter has the following advantages:

( 1 ) Each individual micro- inverters connected to an array of photovoltaic panels . Each solar panel has a separate maximum power point tracking (MPPT) control , no matter how the other panels in the array , the panel any time maximum power output . Shadowing experience practical applications , dirt accumulation, while light , which do not deviate or do not match the ideal conditions for micro- inverters will cause the entire PV array to maximize energy output . Power generation systems significantly improve efficiency .

( 2 ) the inverter and PV modules integrated , modular design can be achieved , a single module failure will not affect the entire system design environment temperature reaches -40 degrees to +65 degrees. Environmental rating to IP65, mounting space are not independent , distributed installation easy configuration, can make full use of space and to adapt to different installation direction and angle of the application system , high reliability and easy expansion ;

( 3 ) The micro- inverter technology and power line carrier communication technology, AC bus through the grid can capture the output power and status information of each micro- inverter and PV modules , it is easy to monitor and control the entire system, while not the need for additional communication lines , there is no burden on the system connection , greatly simplifying the system architecture.

3 Kerui micro inverters





4 micro-inverters used in hospital construction
Solar panels produce DC electricity into alternating current by an inverter , without battery energy storage directly through the grid-connected inverter , the power to send the grid. Higher efficiency, better stability , better economy , there conducive to promote the use of the city.
The hospital building energy consumption accounts for the proportion of the total building energy consumption by about 40% , and hospital buildings heated water 24 hours a day , daily hot larger scale, according to statistics from 30 to 500 tons . Great energy hospital , while in the " energy reform " era , hospitals bear the brunt of this energy -hungry , certainly in the vanguard of reform. As the 21st century green solar energy will be used in the hospital when solar power is relatively large area , so the solar building will certainly be used in hospitals, plus micro-inverter has many advantages over traditional inverters, then micro-inverter will certainly shine.