Simple and robust feedback control of a two-switch multi-level half-bridge inverter with non-ideal operation

摘要: The THD+N performance of a novel multi-level half-bridge switching topology is presented. Experimentally implemented as class-D audio amplifier featuring low complexity, the system using simple type error corrective voltage feedback explored in presence abnormal operating conditions. Explored operation new switch dead-time, and with discontinuous conduction windings coupled inductor which specific to this topology. resulting noise curves suggest that control investigated sufficient correct distortion introduced from winding current dead-time does not noticeably impact In addition, analysis harmonic content closed-loop controller itself significantly better topology, capable higher power output less lost dead-time.