Title :
A New SPWM Controlled Three-Switch Buck-Boost Inverter for Distributed Generation Applications
Author :
Tan, Guang-Hui ; Wang, Jianze ; Wang, Rutian ; Ji, Yanchao
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., Harbin
Abstract :
A new three-switch buck-boost inverter suitable for distributed generation (DG) applications is presented. The operation principle is analyzed in detail and the mathematics model is founded based on input-output power balance principle. SPWM control method is employed to optimize the inverter performance. Compared to the conventional double-stage inverter, the proposed converter is structurally simple with only three power switches and can accommodate an AC voltage either larger or lower than the DC voltage in a single power stage. The new inverter circuit topology provides the main switches for turn-on at zero current switching (ZCS) to achieve a low switching loss by a series-resonant tank. Furthermore, an enhanced version of the inverter is also proposed to reduce the ripple voltage on the DC bus. Simulation and experimental results are given to verify the validity and effectiveness of the proposed inverter.
Keywords :
PWM invertors; PWM power convertors; distributed power generation; switching convertors; zero current switching; DG; SPWM controlled three-switch buck-boost inverter; ZCS; distributed generation applications; input-output power balance principle; power switches; switching loss; zero current switching; Analog-digital conversion; Circuit topology; Distributed control; Inverters; Mathematical model; Mathematics; Optimization methods; Switching converters; Voltage; Zero current switching; buck-boost; distributed generation; high-frequency flyback transformer; inverter; zero current switching;
Conference_Titel :
Power System Technology, 2006. PowerCon 2006. International Conference on
Conference_Location :
Chongqing
Print_ISBN :
1-4244-0110-0
Electronic_ISBN :
1-4244-0111-9
DOI :
10.1109/ICPST.2006.321449
