Title :
Regular-sampled harmonic elimination/minimisation PWM techniques
Author_Institution :
Dept. of Electr. & Electron. Eng., Bristol Univ., UK
Abstract :
Recent development are surveyed in regular-sampled pulse width modulation (PWM) techniques which allow harmonic minimization and also harmonic elimination to be generated online in real-time using a simple microprocessor software algorithm. It is shown how, with suitable modification, the conventional regular-sampled PWM techniques can be simply extended to allow harmonic-minimization and also harmonic-elimination PWM to be closely reproduced using simple algebraic equations. Using these optimal regular-sampling PWM techniques, it is possible to produce optimized PWM inverter drive, uninterruptible power supply, and static frequency converter performance, up to quasi-square-wave operation. All the detailed theory, mathematics, and equations needed to implement these new PWM strategies are presented, together with experimental results confirming the approach.<>
Keywords :
digital control; electric drives; frequency convertors; harmonics; invertors; microcomputer applications; pulse width modulation; switching; uninterruptible power supplies; PWM; algebraic equations; harmonic elimination; harmonic minimization; inverter drive; microprocessor software algorithm; regular-sampled pulse width modulation; static frequency converter; uninterruptible power supply; Equations; Microprocessors; Minimization methods; Pulse generation; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Software algorithms; Space vector pulse width modulation; Uninterruptible power systems;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1990. APEC '90, Conference Proceedings 1990., Fifth Annual
Conference_Location :
Los Angeles, CA, USA
DOI :
10.1109/APEC.1990.66434
