Title :
An efficient braking method for controlled AC drives with a diode rectifier front end
Author :
Jiang, J. ; Holtz, J.
Author_Institution :
Wuppertal Univ., Germany
Abstract :
Standard PWM inverter fed induction motor drives employ a diode rectifier bridge to supply AC power from the utility to the DC link. Although a diode rectifier is the most cost-effective solution, it does not permit reversing the power flow. This prohibits operating the machine in the regenerative braking mode for active deceleration. An innovative control method substitutes conventional hardware, such as an active front-end rectifier or a chopper controlled braking resistor in the DC link circuit, by additional software that is implemented in the standard microprocessor control. The control algorithm maximizes the power losses in the machine and in the inverter. It enables regenerative braking operation of the induction motor at high torque. The algorithm conserves the high dynamic performance of a vector controlled drive system
Keywords :
DC-AC power convertors; PWM invertors; acceleration control; control system synthesis; digital control; induction motor drives; machine testing; machine theory; machine vector control; microcomputer applications; power engineering computing; regenerative braking; PWM inverter; active deceleration; bidirectional power flow; control algorithm; dynamic performance; induction motor drives; microprocessor control; power losses; regenerative braking mode; software; vector control; Bridge circuits; Choppers; Diodes; Hardware; Induction motor drives; Load flow; Power supplies; Pulse width modulation inverters; Rectifiers; Resistors;
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-6401-5
DOI :
10.1109/IAS.2000.882074
