Title :
Independent control of active and reactive power of the grid-connected inverter
Author :
Li, Peng ; Tang, Jinfei ; Zhang, Ling ; Lian, Chao
Author_Institution :
North China Electr. Power Univ., Baoding
Abstract :
For the mathematical model of PWM inverter under the d-q rotary coordinate system, there exists coupling between the active current and reactive current, which makes it difficult manipulating the power injected into AC grid from distributed generation system. So as to handle the problem, a novel current decoupling strategy based on the input-output linearization is employed in the paper and the PI controllers are designed in the paper, whose application effectively eliminated the interaction between the active current component and reactive current component, equipping the system with fairly excellent linear control characteristic. Simulation results demonstrate that the method adopted possesses excellent decoupling performance.
Keywords :
PWM invertors; distributed power generation; power generation control; power grids; reactive power control; AC grid; PI controllers; PWM inverter; active power independent control; current decoupling strategy; d-q rotary coordinate system; distributed generation system; grid-connected inverter; input-output linearization; linear control characteristic; reactive power independent control; Analog-digital conversion; Control systems; Distributed control; Integrated circuit modeling; Mesh generation; Pulse width modulation inverters; Reactive power; Reactive power control; Static power converters; User-generated content;
Conference_Titel :
Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3826-6
Electronic_ISBN :
978-7-5062-9221-4