Title :
Voltage gradient suppression in application of voltage-fed PWM inverter to AC motor drives-resonant DC link inverter approach
Author :
Suh, Duk-Bae ; Choi, Jong-Woo ; Sul, Seung-Ki
Abstract :
In this paper, a hazardous phenomenon which occurs when the switching device of an inverter switches very fast or when a cable feeding a motor is very long is described and a suppression method for the voltage transition gradient of the voltage source inverter is presented. By using the resonant circuit in the DC link of the inverter, the inverter output voltage gradient at the switching moment can be suppressed. Compared to the hard switching inverter, the suppression of the voltage rise gradient and the performance of the proposed inverter in the control of the motor are verified through the experiment
Keywords :
PWM invertors; induction motor drives; machine control; resonant power convertors; switching circuits; AC motor drives; induction motors; inverter output voltage gradient; motor control; resonant DC link inverter; resonant circuit; switching moment; very fast switching; voltage gradient suppression; voltage source inverter; voltage transition gradient suppression; voltage-fed PWM inverter; AC motors; Power filters; Pulse width modulation inverters; RLC circuits; Resonance; Switches; Switching circuits; Switching frequency; Torque control; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1996. APEC '96. Conference Proceedings 1996., Eleventh Annual
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-3044-7
DOI :
10.1109/APEC.1996.500502
