Title :
High-frequency isolated grid-connected PV inverter based on SPWPM
Author :
Xuecheng Li ; Hui Liang ; Junli Geng
Author_Institution :
Nat. Active Distrib. Network Technol. Res. Center (NANTEC), Beijing Jiaotong Univ., Beijing, China
fDate :
Aug. 31 2014-Sept. 3 2014
Abstract :
A novel high-frequency isolated grid-connected PV inverter based on sinusoidal pulse width position modulation (SPWPM) is studied. It is suitable for household PV utility with advantages of light weight, small volume and high efficiency. The working principle is analyzed in details and a close loop control strategy is designed. In order to eliminate the grid-connected current distortion caused by phase error, the phase compensation control strategy is employed in current control loop to improve the traditional proportional integration controller. Validity of the topology and control strategy of this novel inverter is verified with experimental results.
Keywords :
PI control; closed loop systems; electric current control; invertors; photovoltaic power systems; SPWPM; close loop control strategy; current control loop; grid-connected PV inverter; grid-connected current distortion; household PV utility; phase compensation control; phase error; proportional integration controller; sinusoidal pulse width position modulation; Frequency modulation; Inductors; Inverters; Photovoltaic systems; Pulse width modulation; Topology; Voltage control;
Conference_Titel :
Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4240-4
DOI :
10.1109/ITEC-AP.2014.6940722
