Simulation study of transverse flux linear switched reluctance drive

A transverse flux linear switched reluctance motor (TFLSRM) drive consisting of TFLSRM, speed and current controllers, commutation control, and position sensors, is proposed. Twelve primary side poles are composed of four sectors, and each sector includes three poles corresponding to three phases. Four windings of each phase, respectively located on four sectors, can be connected in series or parallel to achieve high efficiency for whole operating ranges. Each sector can operates in an independent manner, which means that the machine structure allows no simultaneous excitation of poles in different sectors, which enhances robustness of the system due to its fault tolerance capability. The elaborate optimum current waveform with assistance of current controller minimizes the thrust force ripple, meanwhile ensuring high efficiency. Speed control employs the nonlinear characteristic of thrust force to fulfil fast dynamic response. The mathematic models including electrical and mechanical dynamics are established. The parameters of TFLSRM model are obtained through digital computation of ANSYS-based magnetic field. On the basis of analyzing the structure and exciting feature of motor, the complete modeling and simulation, considering the nonlinear characteristic of the drive, are accomplished by using Matlab 6.5 software. The simulated results verify the proposed TFLSRM drive.