This article deals with an improved control for synchronous reluctance motor (SyRM)-based photovoltaic (PV) water pumping system, eliminating the speed controller of position sensorless field-oriented control (FOC) of SyRM. The solar water pump drive involves two stages of power conversion. The reference quadrature axis current of FOC is estimated from available PV array power that is being continuously tracked for maximum power point. This eliminates the requirement of an additional speed controller. This improves the transient behavior of overall control under dynamic conditions such as varying solar radiation. A pole is eliminated from overall characteristic equation of open-loop dc link voltage control transfer function. As a result, a single proportional integrator controller satisfactorily controls the whole pumping system. The system is much easier to tune, and by default, immune to aging and variation in pump's constant. This improves fidelity and reduces the overall cost of the system. Performance of this system is validated through a developed laboratory prototype of solar PV array-fed SyRM drive for water pumping. The overall system performance is examined under different environmental conditions.

中文翻译：

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用于控制基于同步磁阻电机的太阳能光伏水泵系统以提高性能的极数减少概念


本文讨论了基于同步磁阻电机 (SyRM) 的光伏 (PV) 水泵系统的改进控制，消除了 SyRM 无位置传感器磁场定向控制 (FOC) 的速度控制器。太阳能水泵驱动涉及两个阶段的功率转换。 FOC 的参考交轴电流是根据持续跟踪最大功率点的可用光伏阵列功率估算的。这样就不需要额外的速度控制器。这改善了动态条件下整体控制的瞬态行为，例如变化的太阳辐射。从开环直流链路电压控制传递函数的整体特征方程中消除了极点。因此，单个比例积分控制器可以令人满意地控制整个泵送系统。该系统更容易调整，并且默认情况下不受泵常数老化和变化的影响。这提高了保真度并降低了系统的总体成本。该系统的性能通过已开发的用于抽水的太阳能光伏阵列馈电 SyRM 驱动实验室原型进行了验证。在不同的环境条件下检查整体系统性能。