Title :
A novel single-phase AC/DC converter for power factor correction
Author :
Lin, Bor-Ren ; Huang, Shih-Jung ; Hung, Tsung-liang
Author_Institution :
Dept. of Electr. Eng., Nat. Yunlin Univ. of Sci. & Technol., Touliu, Taiwan
Abstract :
A novel single-phase AC/DC converter with two pulsewidth modulation (PWM) schemes is proposed to draw a sinusoidal line current with nearly unity power factor, achieve balanced neutral point voltage and regulate the do bus voltage. With the aid of neutral point clamped scheme, a three-level voltage pattern will be generated on the AC side of the proposed rectifier. To track the line current command derived from a voltage controller and a phase-locked loop circuit, a hysteresis current control scheme is used in the inner loop control. A capacitor voltage compensator is employed to achieve the balanced neutral point voltage. Simulation results are performed to investigate the effectiveness of the proposed control scheme.
Keywords :
AC-DC power convertors; PWM power convertors; electric current control; phase locked loops; power factor correction; voltage regulators; DC bus voltage regulation; PLL circuit; PWM schemes; balanced neutral point voltage; capacitor voltage compensator; hysteresis current control scheme; inner loop control; neutral point clamped scheme; phase-locked loop circuit; power factor; power factor correction; pulsewidth modulation schemes; single-phase AC/DC converter; sinusoidal line current; three-level voltage pattern; voltage controller; AC generators; DC-DC power converters; Phase locked loops; Power factor correction; Pulse width modulation; Pulse width modulation converters; Reactive power; Rectifiers; Tracking loops; Voltage control;
Conference_Titel :
Industrial Technology, 2002. IEEE ICIT '02. 2002 IEEE International Conference on
Print_ISBN :
0-7803-7657-9
DOI :
10.1109/ICIT.2002.1189307
