Title :
A Novel Nonlinear Decoupled Controller For VSC-HVDC System
Author :
Liu Zhongqi ; Shao Wenjun ; Song Qiang ; Liu Wenhua
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
Abstract :
The development of renewable energy resources generation technologies requires the support of VSC-HVDC systems. VSC-HVDC systems using PWM controlled voltage source converters (VSCs) have the attractive features such as fault propagation prevention, increasing low frequency stability and voltage stability. This paper established the dynamic mathematical model for the VSC-HVDC system. Based on the obtained model and the theory of exact linearization Via feedback, a MIMO nonlinear controller for the system is proposed. Independent control for the active power and reactive power are realized by this controller. By means of electromagnetic simulation software PSCAD/EMTDC, the feasibility and effectiveness of the proposed model and controller are verified.
Keywords :
HVDC power convertors; MIMO systems; PWM power convertors; feedback; linearisation techniques; nonlinear control systems; reactive power control; MIMO nonlinear controller; PSCAD-EMTDC electromagnetic simulation software; PWM converter; VSC-HVDC system; active power control; dynamic mathematical model; exact linearization theory; feedback; nonlinear decoupled controller; reactive power control; renewable energy resources generation technology; voltage source converter; Control systems; Frequency conversion; Nonlinear control systems; Power conversion; Power system modeling; Pulse width modulation; Pulse width modulation converters; Renewable energy resources; Stability; Voltage control;
Conference_Titel :
Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-2486-3
Electronic_ISBN :
978-1-4244-2487-0
DOI :
10.1109/APPEEC.2009.4918099
