Title :
A novel control scheme of a parallel current-controlled PWM inverter
Author :
Ogasawara, Satoshi ; Takagaki, Jin ; Akagi, Hirofumi ; Nabae, Akira
Author_Institution :
Dept. of Electr. Eng., Nagaoka Univ. of Technol., Niigata, Japan
Abstract :
A parallel technique for current-controlled pulse-width-modulated (PWM) inverters is described. Two voltage source inverters, the output terminals of which are connected in parallel through current balancers, are used as a main circuit. In this scheme, excellent characteristics both in steady states and in transient states are obtained, keeping the average values of the cross current and zero sequence current at zero level. This current control scheme is applicable to large-capacity GTO inverters because good performance is attained even if the switching frequency is only a few hundred hertz, as is shown in the experimental results
Keywords :
electric current control; invertors; pulse width modulation; thyristor applications; GTO inverters; cross current; current balancers; parallel current-controlled PWM inverter; pulse width modulation; steady states; switching frequency; transient states; voltage source inverters; zero sequence current; Circuits; Current control; Hysteresis; Industry Applications Society; Pulse width modulation inverters; Reactive power; Servomechanisms; Steady-state; Switching frequency; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
