1, the rated output voltage: within a predetermined fluctuation range of the input DC voltage is allowed, it means that the rated voltage of the inverter should be output. Off grid inverter The stability of rated output voltage accuracy is generally defined as follows: In steady-state operation, the voltage fluctuation range should be a limit, such as the deviation does not exceed the rating of ± 3% or ± 5%. Under load mutations or other interfering factors affecting the dynamics of the output voltage deviation should not exceed the rating of ± 8% or ± 10%.
2, the output voltage imbalance: Under normal operating conditions, the inverter output phase voltage unbalance (reverse component of the ratio of positive sequence component) should not exceed a specified value, usually expressed in% as 5 % or 8%.
3, the output voltage waveform distortion: battery power inverter When the inverter output voltage is sinusoidal, shall specify the maximum allowable waveform distortion (or harmonic content). Usually to a total distortion of the output voltage waveform that its value should not exceed 5% (10% single phase output enable).
4, rated output frequency of the inverter output AC voltage frequency should be a relatively stable value, usually frequency 50Hz. Under normal operating conditions the deviation should be within ± 1%.
5, the load power factor: the ability to characterize the capacitive load inverter with inductive load or. vehicle power inverters In the sine condition, the load power factor of 0.7 to 0.9 (hysteresis), the rating is 0.9.
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