Title :
A New Microcomputer Controlled Modulator for PWM Inverters
Author :
Hamman, Johan ; Du Toit, Lourens P.
Author_Institution :
Department of Electrical and Electronic Engineering, University of Stellenbosch, 7600 Stellenbosch, Republic of South Africa.
fDate :
3/1/1986 12:00:00 AM
Abstract :
The design of a new microcomputer controlled modulator for a pulsewidth modulated (PWM) inverter supplying a three-phase induction machine is presented. The requirements for the control of variable speed drives in general are discussed. The specifications for the PWM modulator are set out and explained. Analog and digital techniques are used in the design. All the control parameters of the modulator are under microcomputer control, and a few different PWM switching strategies may be implemented. The system is thus very flexible. The modulator has a very high frequency resolution. Some experimental results are also included.
Keywords :
Frequency; Induction machines; Microcomputers; Microprocessors; Pulse generation; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Variable speed drives;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.1986.4504715
