Title :
High efficiency 18 kW HF link, three-phase, soft commutated DC-AC-AC converter (study of start and stop operations)
Author :
Gonthier, L. ; Bernot, F. ; Berthon, A.
Author_Institution :
Technicrea, Belfort, France
Abstract :
In this paper, a new DC/AC/AC converter for variable speed AC drives using soft commutation technique is described. It consists of a dual-thyristor voltage inverter connected to cycle-converters. It combines the advantages of a soft commutated converter and those of PWM control (constant commutation frequency, simple control). The discussed converter is realised with IGBTs; it supplies trapezoidal currents to a three-phase 18 kW brushless permanent magnet motor, with 20 kHz chopping output frequency. The paper focuses on the start and stop transients
Keywords :
AC motor drives; DC-AC power convertors; brushless machines; commutation; insulated gate bipolar transistors; permanent magnet motors; starting; transient analysis; variable speed drives; 18 kW; 20 kHz; DC/AC/AC converter; IGBTs; PWM control; brushless permanent magnet motor; chopping output frequency; constant commutation frequency; cycle-converters; dual-thyristor voltage inverter; high efficiency; nondissipative snubbers; soft commutated DC-AC-AC converter; soft commutation technique; start transients; stop transients; three-phase; trapezoidal currents; variable speed AC drives; Analog-digital conversion; Commutation; Frequency conversion; Hafnium; Insulated gate bipolar transistors; Magnetic variables control; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3704-2
DOI :
10.1109/APEC.1997.581474
