Velocity Control of a PMSM Fed by an Inverter-DC/DC Buck Power Electronic Converter

Victor Manuel Hernandez-Guzman,Jorge Orrante-Sakanassi,Ramon Silva-Ortigoza

doi:10.1109/access.2020.2986701

Abstract

This paper is concerned with velocity control in a permanent magnet synchronous motor (PMSM) when it is fed by an inverter-DC/DC Buck power converter system as power amplifier. We present, for the first time, a formal local asymptotic stability proof to solve this control problem. We stress that this is the first time that this problem is solved for an AC motor. Our control scheme is simple when compared to differential flatness- and backsteping-based proposals in the literature to solve this problem for DC motors. The key for these achievements is the employment of a novel passivity-based approach which takes advantage of the natural energy exchange among the electrical and mechanical subsystems that compose the inverter-DC/DC Buck power converter-PMSM system. The main features of this novel passivity-based approach are summarized in this paper.

Highlights

One common technique that is used to provide power to electromechanical systems is pulse width modulation (PWM)
The hard commutation that is intrinsic to PWM stresses the actuator inducing abrupt changes in its dynamics which are observed as sudden changes in voltages and electric currents [1]
In the present paper we extend the application of the inverter-DC/DC power converter topology introduced in [18] to feed a permanent magnet synchronous motor (PMSM) for velocity regulation purposes

Summary

INTRODUCTION

One common technique that is used to provide power to electromechanical systems is pulse width modulation (PWM). In the present paper we extend the application of the inverter-DC/DC power converter topology introduced in [18] to feed a permanent magnet synchronous motor (PMSM) for velocity regulation purposes. Our main contribution is that, for the first time, velocity is controlled in an AC motor when it is fed by an inverter-DC/DC power converter. Hernández-Guzmán et al.: Velocity Control of a PMSM Fed by an Inverter-DC/DC Buck Power Electronic Converter are well known to be nonlinear and multi input-multi output. This renders much more complex the control design task and represents the merit of our contribution.

MATHEMATICAL MODEL

MAIN RESULT

CLOSED-LOOP DYNAMICS

Rc αpd

SIMULATION RESULTS

CONCLUSION