Abstract In this article, a V/f control with two stabilizing loops and maximum torque per ampere (MTPA) control for spoke-PM synchronous motor drives is proposed, and experimentally compared against a sensorless field-oriented control (FOC) strategy based on active flux observer. To improve the drive dynamics, the standard V/f control is enhanced with two stabilizing loops, which provide corrections for stator voltage vector amplitude and phase. The novel voltage amplitude correction is based on MTPA method employing the magnetic energy and active flux concepts. The voltage angle correction employs the active power variation and works only in transient operations, to preserve the synchronism. The sensorless FOC, used for comparison, is based on an active flux observer which uses a PI compensator with the active flux error correction between the voltage and current models. Extensive comparative experimental results in sensorless large speed range, minimum speed being 100 rpm (0.022 p.u.), with speed reversal and quick load torque, validate the two control systems. Good close performances are obtained, FOC being more stable and less influenced by parameter variations.

中文翻译：

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带有稳定回路和 MTPA 的 V/f 与 PMSM 驱动器的无传感器 FOC

摘要 在本文中，提出了一种用于辐条永磁同步电机驱动器的具有两个稳定回路和最大每安培转矩 (MTPA) 控制的 V/f 控制，并与基于主动的无传感器磁场定向控制 (FOC) 策略进行了实验比较。通量观察者。为改善驱动动态，标准 V/f 控制通过两个稳定回路增强，提供定子电压矢量幅度和相位的校正。新颖的电压幅度校正基于采用磁能和有源通量概念的 MTPA 方法。电压角校正采用有功功率变化，仅在瞬态操作中起作用，以保持同步。用于比较的无传感器 FOC，基于有源磁通观测器，它使用 PI 补偿器，在电压和电流模型之间进行有源磁通误差校正。在无传感器大速度范围内的广泛比较实验结果，最低速度为 100 rpm (0.022 pu)，具有速度反转和快速负载扭矩，验证了两个控制系统。获得了良好的接近性能，FOC 更稳定，受参数变化的影响更小。