Suppressing Voltage Spikes of MOSFET in H-Bridge Inverter Circuit

Power electronics devices are made from semiconductor switches such as thyristors, MOSFETs, and diodes, along with passive elements of inductors, capacitors, resistors, integrated circuits. They heavily used in power processing for applications computing, communication, medical electronics, appliance control, converters high DC AC transmission what is now called harmonized AC/DC networks. A converter’s operation described a periodic sequencing different modes corresponding to topologies interfaced filters elements. The performance has improved considerably using switching frequency, which leads significant improvement performance. However, the dv/dt through fast-switching transient MOSFET associated parasitic components generating oscillations voltage spikes having adverse effects on complementary switches, thereby affecting safe devices. In this paper, gate-driver circuit suppress H-Bridge inverter’s spikes. proposed technique simple gate driver based IR2112 (IC) by adding capacitor attenuate effect freewheeling current, suppressing negative This paper’s main contribution improve circuit’s capability inverter. validated experimentally compared conventional driver. experimental results show that can effectively MOSFET’s oscillations.