Title :
Novel control technique of single-phase PWM rectifier by compensating output ripple voltage
Author :
Somkun, Sakda ; Sehakul, P. ; Chunkag, Viboon
Author_Institution :
Dept. of Teacher Training in Electr. Eng., King Mongkut´´s Inst. of Technol., Bangkok
Abstract :
Novel control technique of single-phase PWM rectifier by compensating output ripple voltage is presented. Output ripple voltage is cancelled before feeding to voltage controller in order to increase system bandwidth while supply current is still nearly sinusoidal and maintains unity power factor. Output ripple voltage estimator is calculated by the information of peak value of supply voltage and current. Peak value estimator of sinusoidal signal is introduced with the help of a simple trigonometric rule. Additionally, feed forward current controller is also presented so as to improve tracking performance of supply current. The proposed scheme is simulated in order to compare with conventional scheme. The simulation results show that the proposed scheme is working effectively both in rectifying mode and regenerating mode
Keywords :
PWM rectifiers; electric current control; feedforward; voltage control; feedforward current controller; peak value estimator; ripple voltage compensation; single-phase PWM rectifier control; system bandwidth; unity power factor; voltage controller; Bandwidth; Bidirectional control; Control systems; Current supplies; Feeds; Frequency; Pulse width modulation; Reactive power; Rectifiers; Voltage control; PWM rectifier; fast response; feed forward control; ripple voltage estimation;
Conference_Titel :
Industrial Technology, 2005. ICIT 2005. IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-9484-4
DOI :
10.1109/ICIT.2005.1600776
