Phase Current Sensorless Control of Switched Reluctance Machines Using Dynamic Interleaving

In this work, A novel phase collaborative, dynamic interleaving technique for SRM drive is proposed to achieve phase current sensor-less operation. The proposed method enables a direct reconstruction of phase current from the dc-link current sensor without using any additional observer-based controller or additional high-frequency pulse injection. The proposed dynamic interleaving current control method prevents the mix-up of pulsating current from different phases. Thus, the dc-link current sensor’s peak current measurement requirement is not more than the phase current sensors’ specification. Eliminating the requirement of phase current sensors helps developing a compact sized converter and improves the reliability of the drive operation. Simulation results are provided to support the effectiveness of the proposed control technique.