ABSTRACT

Induction motors are often fed from current-source inverters in applications in the speed range of about 100:1, and where reliability is of great importance. The simultaneous shorttime conduction of currents through the semiconductor switches in one leg of the currentsource inverter does not produce overcurrents in the motor, due to the presence of the filter in dc link. Recently developed sinusoidal current sinusoidal voltage (at the power source terminals and at the motor terminals) GTO converters with dc link are generating further interest in inverter-driven induction motor drives.