A novel low cost inverter for extended torque-Speed characteristics of Spindle motor

This paper presents a novel low cost Inverter to drive a Spindle motor at high speed with high starting torque using bipolar starting and unipolar running algorithm. The proposed inverter consists of 8 switches, which is a far less count as compared to some of the existing inverter topologies for driving a Spindle motor. With the proposed inverter Spindle motor can achieve high starting torque with high speed using simple control algorithm. The MatLab based Motor model and inverter model are developed for verifying the proposed topology. The simulation results have been discussed here.