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This article presents the control of solar photovoltaic (PV) battery-fed reluctance synchronous motor drive for light electric vehicle. The system performance is evaluated based on the Indian driving cycle (IDC). This system uses a bidirectional dc–dc converter for regulating battery power for different operating conditions as per IDC. For augmenting the performance of the battery, a rooftop solar-PV panel is installed with a dc–dc boost converter for maximum power point tracking. The reluctance synchronous motor drive is operated using three-phase voltage inverter with hysteresis current control and energy regeneration of the stored kinetic energy of the system. The speed and position of the reluctance synchronous motor drive are also estimated using flux linkages, which makes this system cost effective. The reluctance synchronous motor drive is simulated in MATLAB/Simulink for dynamic and steady-state conditions of the vehicle. The system's applicability and performance are validated by test results recorded on a laboratory-developed experimental setup in detail. [ABSTRACT FROM AUTHOR]

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. [ABSTRACT FROM AUTHOR]