Title :
A novel 6k±1 order harmonic repetitive control scheme for CVCF three-phase PWM inverters
Author :
Lu, Wenzhou ; Zhou, Keliang ; Cheng, Ming ; Yang, Yunhu
Author_Institution :
Sch. of Electr. Eng., Southeast Univ., Nanjing, China
Abstract :
Repetitive control (RC) is a high-performance control scheme for constant-voltage constant-frequency (CVCF) pulse-width modulated (PWM) inverter systems to cancel output total harmonic distortion (THD). This paper presents a new 6k±1 order harmonic RC (6k±1 RC) scheme for CVCF three-phase PWM inverter systems to further improve the control performance of RC. The proposed control scheme can achieve zero-error tracking or perfect disturbance rejection for 6k±1 order harmonics. Compared with conventional RC (CRC), 6k±1 RC requires less data memory and offers faster error convergence rate. It also yields very low THD and very high tracking accuracy. In the presence of nonlinear load disturbances, an application example of a 6k±1 RC controlled three-phase PWM inverter is provided to evaluate the proposed 6k±1 RC scheme. Experimental results show the validity and advantages of the proposed 6k±1 RC scheme.
Keywords :
PWM invertors; harmonic distortion; 6k±1 order harmonic repetitive control scheme; CVCF three-phase PWM inverters; RC controlled PWM inverter; THD; constant-voltage constant-frequency; error convergence rate; nonlinear load disturbances; perfect disturbance rejection; pulsewidth modulated inverter systems; total harmonic distortion; tracking accuracy; zero-error tracking; Control systems; Harmonic analysis; History; Inverters; Pulse width modulation; Steady-state; Voltage control;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073488
