Title :
A soft switched current controlled converter for induction machine driving
Author :
Andrade, D.A. ; Neto, R. M Finzi ; Freitas, L.C. ; Vieira, J.B.Jr. ; Farias, V.J.
Author_Institution :
Dept. of Electr. Eng., Univ. of Uberlandia, Brazil
Abstract :
The paper proposes a current controlled inverter operating in the ZVS mode for an induction machine drive. Operation with no voltage stress in the DC link bus is achieved. Together with the soft switching operation, a fixed frequency bang bang current control technique is also implemented, allowing for an accurate shaping of sinusoidal currents to feed the motor. As a result, a ripple free torque profile in steady-state operation is reached. With soft switching, it is possible to operate conventional IGBTs at 40 kHz. A detailed analysis of the circuit operation is presented. The feasibility of the proposed scheme is experimentally verified on a prototype
Keywords :
DC-AC power convertors; induction motor drives; insulated gate bipolar transistors; invertors; power bipolar transistors; power semiconductor switches; switching circuits; 40 kHz; IGBTs; ZVS; current controlled inverter; fixed frequency bang bang current control technique; ripple free torque profile; sinusoidal currents shaping; soft switching operation; steady-state operation; Current control; Feeds; Frequency; Induction machines; Inverters; Steady-state; Stress; Switching converters; Torque; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.789052
