Wireless Switched Reluctance Motor Drive and Energy Recovery System Based on Individual Demagnetization Loop

Conventional wireless power transmission systems are only capable of handling a single load, which presents a challenge in meeting the operational requirements of both the switched reluctance motor (SRM) and the battery. In addition, the winding demagnetization current of traditional power converters decreases slowly, which reduces the efficiency and output capacity of the motor. To address these issues, this article proposes a wireless SRM drive and energy recovery system based on an individual demagnetization circuit. The proposed wireless system employs an LCC-S compensation network to drive the motor load and maintain a constant voltage (CV) gain throughout the forward power transfer process. In addition, a hybrid LCC–LCC/S self-switching compensation network is utilized to achieve constant-current (CC)/CV charging. During a reverse power transfer, the LCC–LCC compensation network is employed for energy recovery, thereby establishing an energy interconnection between the motor and the grid. The findings indicate that the efficiency of the motor power converter based on an individual demagnetization circuit is 10%–20% superior to that of the conventional power converter. The system is capable of maintaining CC and CV characteristics under battery load conditions, thereby ensuring safe and stable battery charging. Furthermore, no additional components are required for this functionality. The peak efficiency of the system is 87%. Under motor load conditions, the system maintains CV characteristics, allowing the motor to operate stably. These results demonstrate that the system has notable improvements in energy efficiency and reliability, particularly in the areas of bidirectional energy transmission and safe battery charging.