Novel IPMSM drive for compact washing machine

This paper describes high-performance novel interior permanent magnet synchronous motor (IPMSM) drive for compact washing machine. The motor has been designed to decrease size of the existing drives and create more compact washing machine. It utilizes inner rotor motor scheme in contrast to the conventional drives, which use outer rotor motor scheme. The control system of the developed drive implements all necessary features for such drives. It includes maximum torque per ampere (MTPA) control for full utilizing of the motor capabilities and sixth harmonic suppression algorithm for eliminating of the six order harmonic (in dq reference frame) of the current, which increases power loss and produces acoustic noises. Control system also implements field-weakening algorithm, which rotates motor at 300% of rated speed, and is used for spin-dry modes.