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标题：伺服永磁同步电机弱磁控制系统设计 |
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作者：王彦超, 赵小鹏 |
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| 2015年第5期 访问次数：306次 |
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摘要：针对伺服系统用永磁同步电机，在电机数学模型及其SVPWM的基础上，分析了弱磁控制机理，研究了d-q轴电流解耦策略、基于外电压环的弱磁控制策略。设计了基于DSP2812的永磁同步电机控制器，主要包括控制电路、功率电路，为了解决DSP引起的相位滞后，研究了电机转速较高时转子位置超前补偿策略。试验结果表明：控制系统完成了永磁同步电机的弱磁升速控制，在较宽的调速范围内实现了转速闭环高稳态精度、高瞬态响应控制，满足伺服系统的需求。
关键词：永磁同步电机；弱磁；DSP2812；超前补偿
Abstract: According to permanent magnet synchronous motor (PMSM) used in servo system，the method for decoupling d-q axis currents and the strategy for fluxweaking control used outer voltage loop were researched based on the mathematical model of the motor and the space vector pulse width modulation (SVPWM). The motor controller was designed based on digital signal processor (DSP) 2812, including control circuit and power circuit. The strategy of motor position leadingcompensation was researched in order to solve the time lag by DSP. The experiment results show that the control system achieves the fluxweaking control for the PMSM motor, the static high precision and the transient fast respond of the motor speed are also realized by adopting speed closedloop. The controller satisfies the demands of the servo system. Key words: PMSM； fluxweaking； DSP2812；leadingcompensation |
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