Accurate Modeling Method for Switched Reluctance Motors with Small Sample Flux-linkage Characteristics

doi:10.11985/2021.01.003

Abstract

Abstract:

The small sample flux-linkage characteristics of m+1 special positions of m-phase switched reluctance motor (SRM) can be obtained quickly by using the torque-balanced method without locking device. To solve the problem of accurate modeling of SRM based on small sample flux-linkage characteristics, a novel modeling method for SRM based on fuzzy logic system is proposed. The proposed method mainly consists of three steps. Firstly, according to the inherent prior knowledge of SRM pole pairs and flux-linkage changing trend with rotor position, the fuzzy space is divided. Secondly, the fuzzy rules are automatically extracted from the sample data by using fuzzy logic system to form a fuzzy rule base. Finally, the center of gravity method is used to solve the flux-linkage value, the accurate modeling of SRM with small sample data is realized. Different from the conventional modeling method, which needs to measure the flux-linkage characteristics data of the whole position period, the proposed method only needs the flux-linkage characteristics of m+1 special position to realize the accurate modeling of SRM, which greatly improves the modeling efficiency. The simulation and experimental results verify the effectiveness of the proposed method.

Key words: Switched reluctance motor, flux-linkage characteristics, torque-balanced positions, fuzzy logic system, rule extraction

CLC Number:

TM561

LI Cunhe, ZHAO Bo, LIU Jian, LU Binglin. Accurate Modeling Method for Switched Reluctance Motors with Small Sample Flux-linkage Characteristics[J]. Journal of Electrical Engineering, 2021, 16(1): 16-25.

Figures/Tables 17

References 27

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	B₁	B₂	B₃	B₄
A₁	C₁	C₂	C₁	C₁
A₂	C₃	C₄	C₈	C₁₉
A₃	C₅	C₈	C₂₃	C₃₇
A₄	C₈	C₁₂	C₃₅	C₅₅
A₅	C₁₀	C₁₅	C₄₅	C₇₁
A₆	C₁₂	C₁₉	C₆₁	C₉₂
A₇	C₁₅	C₂₃	C₇₃	C₁₀₉
A₈	C₁₇	C₂₆	C₈₀	C₁₂₃
A₉	C₂₀	C₃₀	C₉₄	C₁₃₇
A₁₀	C₂₂	C₃₄	C₁₀₅	C₁₄₈
A₁₁	C₂₄	C₃₈	C₁₁₁	C₁₅₇
A₁₂	C₂₇	C₄₁	C₁₂₀	C₁₆₆
A₁₃	C₃₀	C₄₅	C₁₂₆	C₁₇₂
A₁₄	C₃₂	C₄₈	C₁₃₂	C₁₇₆
A₁₅	C₃₅	C₅₂	C₁₃₆	C₁₈₁
A₁₆	C₃₇	C₅₅	C₁₄₁	C₁₈₅
A₁₇	C₄₀	C₅₈	C₁₄₅	C₁₈₈
A₁₈	C₄₃	C₆₂	C₁₄₉	C₁₉₂
A₁₉	C₄₅	C₆₅	C₁₅₃	C₁₉₅
A₂₀	C₄₈	C₆₉	C₁₅₇	C₁₉₈
A₂₁	C₅₁	C₇₂	C₁₆₁	C₂₀₀

参数	数值
定/转子极对数	12/8
功率/kW	1.5
额定转矩/(N·m)	9.55
恒转矩调速范围/(r·min^-1)	100~1 500
定子电阻R/Ω	0.9
转动惯量/(kg·m²)	0.01
摩擦因数/[N·m/(rad/s)]	0.005