A Simplified Vector Control of Position Sensorless Permanent Magnet Synchronous Motor for Electrical Household Appliances

Abstract

A simplified vector control is proposed as a driving method of permanent magnet synchronous motor (PMSM) for electrical household appliances. Control structure is simplified by eliminating the speed regulator and the current regulator from the conventional vector controller. Output voltage references are determined by feedforward-like calculation using motor parameters, rotation speed command, and current references. In the static characteristic, the proposed vector control method is almost equal to the conventional one, because the voltage references are calculated in the vector space. A practical estimate equation of rotor position is proposed, and the phase locked loop control approach is employed to drive PMSM without position and speed sensors. Design method of two control gains is given. Finally, the effectiveness of the proposed control is verified by simulation and experiments.

AC voltage and current sensorless control method for three‐phase PWM converter

“…The voltage equation for the assumed rotating coordinate system (dc-qc axes) in the control system is as follows [3,8]…”

Quick-Response Technique for Simplified Position Sensorless Vector Control in Permanent Magnet Synchronous Motors

“…Furthermore, many motor drive techniques that eliminate rotor position and current sensors have been developed in order to reduce costs (1)- (5) . In particluar, a simplified vector control method for consumer appliances that eliminates rotor position sensors has been developed (5) .…”

“…In particluar, a simplified vector control method for consumer appliances that eliminates rotor position sensors has been developed (5) . Using the reference control method (5), the PMSM is driven by a feedforward control that does not have speed or current controls, but instead uses the motor constants, a speed command, and a current command.…”

Reduction of cyclic speed change using a bandpass filter for compressor PMSM sine‐wave position sensorless drives

“…Various methods of sine-wave position sensorless drive for IPMSM have been proposed; such methods are based on the speed emf [1][2][3][4][5][6][7] or position dependence of the IPMSM inductance. In addition, with the recent development of powerful and inexpensive microprocessors [8], sine-wave position sensorless control has been introduced into compressor motors employed in home appliances [9,10].…”