Title :
Economical circuit of a three-phase PWM AC power controller with a new control algorithm without “dead time”
Author :
Strzelecki, Ryszard ; Fedyczak, Zbigniew
Author_Institution :
Inst. of Ind. Electr. Eng., Zielona Gora Univ. of Technol., Poland
Abstract :
In this paper a new economical control algorithm of a three-phase PWM AC power controller with (2+2) transistorized switches has been discussed. The switching frequency of the described PWM AC power controller is fs≫f, where: f=frequency of the supply voltage. Test results of this power controller using a traditional and a new control algorithm has been described. The new algorithm has been realized in two ways. In the first variant, instantaneous values of the load current in two phases are exclusively measured. In the second variant, two line-to-line output voltages are additionally measured
Keywords :
PWM power convertors; control system synthesis; controllers; electric current control; power control; power semiconductor switches; switching circuits; control algorithm; dead time; economical control algorithm; line-to-line output voltages measurement; load current measurement; switching frequency; three-phase PWM AC power controller; transistorized switches; Circuit testing; Industrial control; Power generation economics; Power system economics; Pulse width modulation; Switches; Switching circuits; Switching frequency; Thyristors; Voltage control;
Conference_Titel :
Power Electronics Congress, 1996. Technical Proceedings. CIEP '96., V IEEE International
Conference_Location :
Cuernavaca
Print_ISBN :
0-7803-3633-X
DOI :
10.1109/CIEP.1996.618548