DC-DC power converter Energy industries & utilities H bridge History of engineering & technology PMBLDC motor PMSM drive Takagi–Sugeno fuzzy system ZnO varistors aging characteristics asymmetric boost inverter capacitors circuit breaker circulating current control common mode inverters common move voltage compensation constant current control current source circuit dc-ac converter dc-dc converter discrete space vector modulation electric vehicle electrical machines electromagnetic compatibility electromagnetic topology electrostatic discharge (ESD) elliptical-cylinder type energy absorption failure mode