Title :
Microprocessor implementation of new optimal PWM switching strategies
Author :
Bowes, S.R. ; Midoun, A.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bristol Univ., UK
fDate :
9/1/1988 12:00:00 AM
Abstract :
The microprocessor implementation of new optimal PWM switching strategies are presented, and the special features, characteristics and advantages of various microprocessor configurations are demonstrated. All the necessary microprocessor hardware/software techniques and algorithms required to implement and generate the new optimal PWM strategy on-line and in real time are developed in detail, and demonstrated using practical results from an experimental microprocessor-controlled PWM inverter-induction motor drive system. The presentation is based on the design of a typical PWM operating strategy for a variable speed drive system, which covers the complete voltage/frequency operating range up to, and including, quasisquare wave operation, with minimised total harmonic current distortion (THD). In addition to drive applications, the optimal PWM techniques and microprocessor implementations can be used for uninterruptible power supplies and static frequency changer systems
Keywords :
electric drives; induction motors; microcomputer applications; pulse width modulation; switching; PWM inverter-induction motor drive system; algorithms; hardware/software techniques; microprocessor implementation; optimal PWM switching strategies; static frequency changer systems; total harmonic current distortion; uninterruptible power supplies; voltage/frequency operating range;
Journal_Title :
Electric Power Applications, IEE Proceedings B
