Title :
A novel modulation method for DC/AC matrix converters under distorted DC supply voltage
Author :
Hosseini, Seyed Hossein ; Babaei, Ebrahim
Author_Institution :
Dept. of Electr. Eng., Tabriz Univ., Iran
Abstract :
The aim of this paper is to investigate the performance of a novel modulation algorithm for DC to AC direct matrix converters, with an alternative PWM strategy. By suitable toggling the matrix switches. this novel modulation provides independent control of the magnitude and frequency of the generated output voltages. This new modulation method for matrix converter based on forming the switches matrix. Using this control method in such a converter. ensures that the switches do not short-circuit the voltage source. and do not open-circuit the current sources, thus we have the continuous currents at output and input terminals. It is shown that, it is possible to operate the converter with undistorted output voltages, even when input voltage is distorted. Also the accordance of the simulation results with the mathematical investigation are pointed out.
Keywords :
DC-AC power convertors; PWM power convertors; matrix convertors; switching convertors; voltage control; DC to AC direct matrix converters; DC to single-phase AC matrix converter; DC to three-phase AC matrix converter; DC/AC matrix converters; PWM strategy; bi-directional switches; continuous currents; control method; distorted DC supply voltage; generated output voltages; input terminals; matrix converter; matrix switches toggling; modulation method; undistorted output voltages; voltage source short circuiting; Analog-digital conversion; Capacitors; Circuits; Matrix converters; Power semiconductor switches; Pulse width modulation; Pulse width modulation converters; Sampling methods; Switching converters; Voltage control;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1182725
