TEKGÜN Burak2022-05-102022-05-1020212564-66052564-6605https://doi.org/10.28948/ngmuh.806323https://hdl.handle.net/20.500.12573/1287In this paper, a modular three-phase buck-boost switched reluctance machine (SRM) drive system is proposed. In this topology, the three-phase SRM drive is composed of three single-phase modules that are connected in parallel where each single-phase inverter module is formed with a bidirectional buck-boost DC/DC converter and a cascaded H-bridge inverter. The DC/DC converter generates the rectified form of the phase voltage and the H-bridge inverter alternates and controls the polarity of the output voltage. This structure allows one to adjust the phase voltages independently, which provides faster excitation and demagnetization for a wide range of operating conditions. Since the voltage is always regulated dynamically, the need for bulky DC-bus capacitors is eliminated; hence, the size and the cost of the drive system are reduced. To validate the superiority of the proposed system and compare it with the traditional one, a set of simulations are done in MATLAB® /Simulink® . Not only the torque ripple is reduced, but also a higher torque per ampere ratio is achieved with the proposed system.enginfo:eu-repo/semantics/openAccessFast excitation and demagnetizationModular motor driveSwitched reluctance motor (SRM)articleYıl: 2021 Cilt: 10 Sayı: 1