Abstract
In order to improve the performance of switched reluctance motor (SRM) systems for photovoltaic (PV) pumps, this paper introduces a new converter topology for SRM with controllable multiple power sources. Only simple switching components need to be added at the front end of the asymmetric half-bridge converter in this topology, which enables the control of multiple power sources. The new PV pump system has four operating modes, which are the PV panel driven mode, battery bank driven mode, dual-source driven mode, and battery charging mode. By adjusting the state of the front-end converter switch, the voltage tracking of PV panel can be achieved, providing a stable bus voltage for the SRM system. By controlling the battery bypass switch, the bus voltage of SRM system can be increased, thereby increasing the system power level. Simulations and experiments based on a four-phase 8/6 SRM demonstrate the effect of the novel converter proposed in this paper.
Highlights
Economic growth is typically coupled with the energy consumption, and the energy consumption is linked to the pollutions of the environment
The switched reluctance motor (SRM) is driven by both the PV panel and battery bank during the excitation state, and the energy stored on the windings is fed back to the front-end capacitor and battery bank during the demagnetization state
In order to confirm the feasibility of the proposed converter topology, a low-power four-phase
Summary
Economic growth is typically coupled with the energy consumption, and the energy consumption is linked to the pollutions of the environment. A PV-sourced SRM system based on MPPT control is proposed [5] This system can switch among four operation modes, using only one power converter. On the basis of the traditional switched reluctance motor converter topology, a small number of power devices and an added battery pack are added to improve the output power of the PV pump system and increase the output torque of the SRM motor. In order to prolong the boosting working area time and keep the voltage values stable throughout the boosting region, this paper proposes a new converter topology. Because the bus voltage of the freewheeling phase is freewheeling current is rapidly decreased, and it is prevented from appearing in the inductor falling increased, the freewheeling time can be effectively reduced.
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