A novel inverter drive

An inverter and squirrel cage induction motor drive are presented which alleviate many of the snubber problems associated with conventional DC-fed inverter bridges. The inverter leg series inductance snubber is effectively increased by inserting the motor leakage inductance. The increased leg inductance decreases unwanted turn-off snubber charging currents and controls simultaneous conduction current. The concept and principles are illustrated with a novel 4 kW output drive.<<ETX>>

[1]  Angelo Ferraro,et al.  An overview of low-loss snubber technology for transistor converters , 1982, 1982 IEEE Power Electronics Specialists conference.

[2]  Johann W. Kolar,et al.  New lossless turn-on and turn-off (snubber) networks for inverters, including circuits for blocking voltage limitation , 1984, 1984 IEEE Power Electronics Specialists Conference.