Title :
High accurate ripple reducing method based on the repetitive control
Author :
Amanuma, Katsuyuki ; Fuwa, Motoki ; Sakaki, Yo
Author_Institution :
Fac. of Eng., Chiba Univ., Japan
Abstract :
Repetitive control is applied to an active filter which eliminates the ripple current injected into the inductive load from 10 Hz sinusoidal ripple generator. The active filter is designed as a discrete-time repetitive servo system and consists of voltage-type rectangular waveform inverter, steady state compensator composed of dead-time element, and stabilizing compensator designed using a vector locus of the feedback loop of active filter. A method to improve the deterioration of control accuracy due to a variation of ripple frequency is also discussed. As the results of experiments, about -40 dB reduction of ripple current can be achieved
Keywords :
active filters; control system synthesis; discrete time systems; feedback; invertors; power supplies to apparatus; pulsed power technology; servomechanisms; voltage control; active filter; dead-time element; design; discrete-time repetitive servo system; feedback loop; inductive load; pulsed power supplies; repetitive control; ripple current reduction; sinusoidal ripple generator; stabilizing compensator; steady state compensator; vector locus; voltage controllers; voltage-type rectangular waveform inverter; Active filters; Control systems; Electric variables control; Electromagnets; Error correction; Feedback loop; Frequency; Inverters; Power supplies; Servomechanisms; Steady-state; Thyristors; Voltage; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.349679
