The dual three-phase permanent magnet synchronous motor (DTP-PMSM) is characterized by its low-voltage high-power output, high reliability, and high control flexibility, rendering it widely applicable. Conventional control systems for DTP-PMSMs typically necessitate a minimum of four current sensors for closed-loop control, contributing to increased control system costs and volume. This article proposes a method tailored for a zero-phase-shift DTP-PMSM, utilizing two Hall current sensors to sample multiple branch currents and reconstruct phase currents. The article provides a detailed exposition of the principles behind six-phase current reconstruction using zero voltage vector sampling in a DTP-PMSM, along with the corresponding drive system structure. An analysis of the sampling delay, reconstruction dead zone, and inherent reconstruction errors associated with this method is presented. Simulation and experimental results ultimately validate the effectiveness of the proposed control strategy.

中文翻译：

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具有减少电流传感器的双三相 PMSM 的相电流重建控制


双三相永磁同步电机（DTP-PMSM）具有低压大功率输出、高可靠性、高控制灵活性等特点，应用广泛。 DTP-PMSM 的传统控制系统通常需要至少四个电流传感器来进行闭环控制，从而增加了控制系统的成本和体积。本文提出了一种专为零相移 DTP-PMSM 设计的方法，利用两个霍尔电流传感器对多个支路电流进行采样并重建相电流。本文详细阐述了在 DTP-PMSM 中使用零电压矢量采样进行六相电流重构的原理，以及相应的驱动系统结构。分析了与该方法相关的采样延迟、重建死区和固有重建误差。仿真和实验结果最终验证了所提出控制策略的有效性。