Title :
A soft-switched current-controlled converter for induction machine drives
Author :
De Andrade, Darizon Alves ; Neto, Roberto Mendes Finzi ; De Freitas, Luiz Carlos ; Vieira, João Batista, Jr. ; Farias, Valdeir José
Author_Institution :
Dept. of Electr. Eng., Uberlandia Univ., Brazil
fDate :
1/1/2001 12:00:00 AM
Abstract :
The paper proposes a current controlled inverter operating in zero voltage switching (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 to allow for an accurate shaping of sinusoidal currents to feed the motor. As a result, a ripple free torque profile in steady state operation is achieved. With the soft switching technique 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 :
bang-bang control; electric current control; induction motor drives; insulated gate bipolar transistors; invertors; machine control; switching circuits; 40 kHz; DC link bus; circuit operation; current controlled inverter; fixed frequency bang-bang current control technique; induction machine drives; lossless circuits; ripple free torque profile; sinusoidal currents; soft switching operation; soft switching technique; soft-switched current-controlled converter; steady state operation; zero voltage switching; Current control; Feeds; Frequency; Induction machines; Inverters; Steady-state; Stress; Torque; Voltage control; Zero voltage switching;
Journal_Title :
Power Electronics, IEEE Transactions on
