Title :
Stationary-frame generalized integrators for current control of active power filters with zero steady-state error for current harmonics of concern under unbalanced and distorted operating conditions
Author :
Yuan, Xiaoming ; Merk, Willi ; Stemmler, Herbert ; Allmeling, Jost
Author_Institution :
R&D-Shanghai, Gen. Electr. Corporate, Shanghai, China
Abstract :
The paper proposes the concepts of integrators for sinusoidal signals. A proportional-integral (PI) current controller using stationary-frame generalized integrators is applied for current control of active power filters. Zero steady-state error for the concerned current harmonics is realized, with reduced computation, under unbalanced utility or load conditions. Designing of the PI constants, digital realization of the generalized integrators, as well as compensation of the computation delay are studied. Extensive test results from a 10-kW prototype are demonstrated
Keywords :
active filters; control system synthesis; electric current control; harmonic distortion; integrating circuits; power harmonic filters; power supply quality; power system harmonics; two-term control; 10 kW; P1 constants; active power filter current control; computation delay; control design; control performance; current harmonics; digital realization; distorted operating conditions; proportional-integral current controller; sinusoidal signal integrators; stationary-frame generalized integrators; unbalanced operating conditions; zero steady-state error; Active filters; Adaptive filters; Current control; Error correction; Hysteresis; Industry Applications Society; Pi control; Power harmonic filters; Proportional control; Steady-state;
Journal_Title :
Industry Applications, IEEE Transactions on
