Title :
A variable-voltage current-commutated three-phase inverter
Author :
Kumar, B. S Ashok ; Mirbod, Ali
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Southwestern Louisiana, Lafayette, LA, USA
Abstract :
A six-pulse three-phase inverter circuit that provides a wide range of AC output voltages and frequencies is presented. The inverter circuit uses asymmetrical thyristors for all the controllable switches. Through the use of these devices, a small turn-off time, low commutation circuit and switching power losses, and high-surge-current handling capabilities are obtained. The performance of the inverter is evaluated both analytically and experimentally. The inverter no-load power losses are calculated and compared with the experimental values using different supply voltages
Keywords :
invertors; thyristor applications; 6-pulse invertor circuit; AC output voltages; asymmetrical thyristors; controllable switches; high-surge-current handling capabilities; low commutation circuit; switching power losses; turn-off time; variable-voltage current-commutated 3-phase invertor; Capacitors; Diodes; Frequency; Power supplies; Pulse width modulation; Pulse width modulation inverters; Switches; Switching circuits; Thyristors; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
