Dual Subspace Duty Cycle Model Predictive Current Control for Dual Three-phase Permanent Magnet Synchronous Generator

doi:10.11985/2022.03.012

Abstract

Abstract:

Model predictive control has been widely used in multiphase motor control systems because of its advantages, such as simple concept, quick response, and easy handling of nonlinear constraints. However, the present model predictive control only considers the electromechanical energy conversion of α-β subspace, and doesn’t consider the harmonic loss caused by the converter dead-time effect and other non-linear factors. In this paper, a dual subspace duty cycle model predictive current control strategy is proposed for dual three-phase permanent magnet synchronous generator rectification system. With the proposed strategy, the α-β subspace and x-y subspace are controlled simultaneously during a sampling cycle, so the harmonic currents are effectively suppressed. Based on this, a virtual vector duty cycle optimization strategy is introduced in the two subspaces to further improve the steady-state control performance. Finally, the feasibility and effectiveness of the proposed control strategy are verified by experiments.

Key words: Dual three-phase permanent magnet synchronous generator, harmonic suppression, model predictive current control, dual subspace control, duty ratio

CLC Number:

TM313

WANG Yuxue, XU Dezhi, ZHAO Wenxiang, HAO Liang, TANG Hongyu. Dual Subspace Duty Cycle Model Predictive Current Control for Dual Three-phase Permanent Magnet Synchronous Generator[J]. Journal of Electrical Engineering, 2022, 17(3): 104-113.

Figures/Tables 14

References 22

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α-β子空间		x-y子空间
第一次寻优	第二次寻优	第一次寻优	第二次寻优
vv₂	vv₁	vv'₂	vv'₁
vv₂	vv₃	vv'₂	vv'₃
vv₅	vv₄	vv'₅	vv'₄
vv₅	vv₆	vv'₅	vv'₆
vv₈	vv₇	vv'₈	vv'₇
vv₈	vv₉	vv'₈	vv'₉
vv₁₁	vv₁₀	vv'₁₁	vv'₁₀
vv₁₁	vv₁₂	vv'₁₁	vv'₁₂

参数	数值	参数	数值
定子电阻R_s/Ω	0.67	额定转速n/(r/min)	600
d轴电感L_d/mH	2.46	控制周期T_s/μs	100
q轴电感L_q/mH 定子自漏感L₀/mH 永磁体磁链ψ_f/Wb	2.46 0.492 0.088 5	开关频率f_s/kHz 死区时间T_d/μs 母线电容C/μF	10 2 2 200
电机极对数	5	母线控制电压U_dc/V	80