Direct Power Control Strategy Based on Fuzzy Control of Brushless Doubly-Fed Generator

doi:10.11985/2015.09.006

Abstract

Abstract:

In order to achieve real-time effective control of active power and reactive power for brushless doubly-fed generator (BDFG), we put forward a direct power control (DPC)strategy. Compared with the traditional vector control, DPC without complex coordinate conversion simplifies the control system and improves the response speed of the system. The traditional DPC uses power hysteresis comparator to achieve the purpose of power control. However, we replace traditional power hysteresis comparator with fuzzy controller, because this method can select the appropriate voltage vector according to the size of the active power and reactive power degree, so it can improve control accuracy and boost motor response speed to power command.The BDFG used in wind power generation control system with the direct power control based on the fuzzy rule is simulated by using the Matlab/Simulink software, and the simulation results show that the control method is correct and effective.

Key words: Brushless doubly-fed, fuzzy control, generator, direct power control

CLC Number:

TM315

Jin Shi,Ren Xinkai. Direct Power Control Strategy Based on Fuzzy Control of Brushless Doubly-Fed Generator[J]. Journal of Electrical Engineering, 2015, 10(9): 35-40.

Figures/Tables 12

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Tab.1

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References 14

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ΔP	ΔQ	S₁	S₂	S₃	S₄	S₅	S₆
NS	NS	U₆	U₁	U₁	U₂	U₂	U₃
	Z	U₆	U₁	U₁	U₂	U₂	U₃
	PS	U₅	U₅	U₆	U₆	U₁	U₁
Z	NS	U₂	U₂	U₃	U₃	U₄	U₄
	Z	U₀	U₀	U₇	U₇	U₀	U₀
	PS	U₄	U₄	U₅	U₅	U₆	U₆
PS	NS	U₂	U₂	U₃	U₃	U₄	U₄
	Z	U₂	U₂	U₃	U₃	U₄	U₄
	PS	U₃	U₄	U₄	U₅	U₅	U₆
ΔP	ΔQ	S₇	S₈	S₉	S₁₀	S₁₁	S₁₂
NS	NS	U₃	U₄	U₄	U₅	U₅	U₆
	Z	U₃	U₄	U₄	U₅	U₅	U₆
	PS	U₂	U₂	U₃	U₃	U₄	U₄
Z	NS	U₅	U₅	U₆	U₆	U₁	U₁
	Z	U₇	U₇	U₀	U₀	U₇	U₇
	PS	U₁	U₁	U₂	U₂	U₃	U₃
PS	NS	U₅	U₅	U₆	U₆	U₁	U₁
	Z	U₅	U₅	U₆	U₆	U₁	U₁
	PS	U₆	U₁	U₁	U₂	U₂	U₃

参数	数值
功率绕组极对数	3
控制绕组极对数	1
功率绕组电阻/Ω	0.166 2
控制绕组电阻/Ω	0.188 2
功率绕组自感/mH	17.37
控制绕组自感/mH	23.51
定子绕组互感/mH	18.13
转动惯量/（kg.m²）	0.3

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