Title :
A direct power feedback method of a dual PWM three-level voltage source converter system
Author :
Wei, Lixiang ; Li, Fahai ; Li, Chongjian
Author_Institution :
Tsinghua Univ., Beijing, China
Abstract :
In this paper, an equivalent circuit of a three-level converter is proposed. By applying this equivalent circuit into a dual-PWM three-level converter system, a new direct power feedback method is obtained. Compared to the conventional control method, the direct power feedback scheme has the following merits: fast dynamic response from the rectifier to the inverter, DC voltage is more stable under dynamic state. Simulation results verified the feasibility and usefulness of this new control method
Keywords :
PWM power convertors; dynamic response; equivalent circuits; feedback; invertors; power control; rectifying circuits; AC/DC/AC converter system; DC voltage stability; direct power feedback method; dual PWM three-level voltage source converter system; dual-PWM three-level converter system; dynamic state; equivalent circuit; fast dynamic response; rectifier; Circuits; Equations; Feedback; Frequency; Matrix converters; Power system modeling; Pulse width modulation; Pulse width modulation converters; Steady-state; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.785647
