Title :
Current control for induction motor drives using random PWM
Author :
Jacobina, Cursino Brandao ; Lima, Antonio Marcus Nogueira ; Silva, Edison Roberto Cabral da ; Trzynadlowski, Andrzej M.
Author_Institution :
Univ. Federal da Paraiba, Campinas Grande, PB, Brazil
fDate :
10/1/1998 12:00:00 AM
Abstract :
Current control in voltage-source inverters with random pulsewidth modulation (RPWM) is investigated. The random modulation is introduced to alleviate the undesirable acoustic, vibration, and EMI effects in inverter-fed AC drive systems. A novel RPWM digital technique with dithering of the switching frequency and compensation of the processing time is described. Design of the current control loop is discussed. Results of investigation of an experimental drive system are presented, proving the feasibility of the proposed solutions
Keywords :
PWM invertors; digital control; electric current control; induction motor drives; machine control; random processes; EMI effects alleviation; acoustic effects alleviation; current control; current control loop; digital controller; induction motor drives; processing time compensation; random PWM; random pulsewidth modulation; randomisation strategy; switching frequency dithering; vibration alleviation; voltage-source inverters; AC motors; Control systems; Current control; Induction motor drives; Jacobian matrices; Pulse width modulation; Pulse width modulation inverters; Switching frequency; Variable speed drives; Voltage control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
