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AC output voltage waveform of such inverter is step wave. To achieve stair-step output, there are a great variety of circuits for choice.
The number of steps of the output wave form differs significantly. The advantages of a step wave inverter are, for example, the output waveform wave significantly improved, reducing high harmonic content, when the ladder to reach 17 or more quasi-sine wave output waveform can be achieved.
When using transformerless output, overall efficiency is high. The disadvantage is that the ladder wave superposition circuit use more power switches, some of which the form line also requires multiple sets of DC power input. This gives troubles to a balanced grouping with wiring and battery charging solar phalanx.
In addition, radio and communications equipment will still suffer from high-frequency interference because of the step voltage.
The power come from Hanfong new energy is very good quality and stable performance. Very good reputation in Europe and middle east market.