Panpu SRM Series Switched Reluctance Motor Speed Control System

The Panpu SRM Series Switched Reluctance Drive (SRD) system comprises a Switched Reluctance Motor (SRM) and an Intelligent Controller (ISRD). As the latest generation of stepless speed control technology following DC drives and AC variable frequency drives, it integrates microelectronics, digital technology, power electronics, and modern electromagnetic design and manufacturing. The motor features a dual- Salient Pole 12/8 structure with concentrated windings on the stator teeth; four adjacent teeth connect to form A, B, and C three-phase windings. The rotor is constructed from laminated silicon steel without windings or permanent magnets, equipped only with a position sensor. Continuous rotation is achieved by energizing phases in the A-B-C-A sequence; reversing the phase order changes the direction. Torque and speed are regulated by controlling current magnitude and switching timing, enabling braking operation. With power switches connected in series with the motor windings, there is no risk of shoot-through short circuits in bridge inverters, ensuring high reliability and simplified protection circuitry. The controller employs a dual closed-loop system for speed and current regulation, utilizing pulse width modulation (PWM) to adjust voltage and current applied to the windings for precise speed control and stability. Built around a microcontroller with digital and analog circuits, it offers stable operation, strong anti-interference capability, and fast response. It includes multiple protection and self-diagnostic functions for overvoltage, undervoltage, phase loss, motor overload, stall, overcurrent, output short circuit, and controller overheating. Status information—including power supply, operation mode, speed, and protection alerts—is displayed on the front panel. Firmware is updatable to meet specific user performance requirements. This system effectively addresses the "over-sized motor for light load" mismatch between rated motor power and actual operating demand, as well as the challenge of high starting torque requirements for heavy-load, high-inertia equipment coupled with low operational efficiency. It is ideal for variable load applications requiring frequent start-stop cycles, such as fans, pumps, lathes, punch presses, mixers, grinders, pumping units, and injection molding machines. The system supports multi-parameter data acquisition and digital remote control, ready for integration into industrial IoT platforms.