Half-bridge inverter circuit diagram

Half-bridge inverter Circuit Diagram

(1) VT1 and VT2 are turned on alternately in one cycle, each for half a cycle.
The output voltage uo is a rectangular wave with an amplitude of Um=Ud/2.
(2) The load of this circuit is an inductive load, so the current output waveform lags the voltage by a certain angle.
As shown in the figure, before t2, VT1 is turned on and VT2 is turned off. At t2, VT2 is turned on and VT1 is turned off. However, since the load is an inductive load, the current cannot reverse immediately. It first flows through VD2 until the current reaches zero. At this time, VD2 is turned off, VT2 is officially turned on, and the current reverses. The rest of the working process is similar.