Motor State Augmented Full-state Feedback DC-Link Voltage Control for Two-stage PMSM Drive
Journal
2021 IEEE International Future Energy Electronics Conference, IFEEC 2021
Date Issued
2021
Author(s)
Abstract
A control method based on the motor state augmented full-state feedback (MSAFSF) control including motor state variables for front-end converter of two-stage PMSM drive is proposed in this paper. The DC-link voltage is adjusted according to the dynamics of the motor. To meet quick speed changes of the motor,rapid voltage response of the DC-link is needed. Therefore,the control strategy of the front-end converter is very important. In this paper,a DC-DC buck converter is adopted as the front-end converter of a two-stage PMSM drive. Usually,only the state variables of the converter are considered in the full-state feedback (FSF) control of the front-end converter while using the linear quadratic regulator (LQR) to design controller parameters. When the motor is accelerating,DC-link voltage and quadrature-axis current oscillate. Hence,the state variable matrix of the proposed MSAFSF control is augmented by motor state variables,so that the load variations such as the current drawing during the motor acceleration could be considered in the feedback control. As a result,the oscillations of the DC-link voltage and quadrature-axis current are reduced. The computer simulations and hardware experiments verify the validity of the proposed MSAFSF control. © 2021 IEEE.
Subjects
buck converter; full-state feedback (FSF) control; motor drive; motor state augmented full-state feedback (MSAFSF) control; variable DC-link voltage
Other Subjects
Buck converter; DC motors; DC-DC converters; Electric inverters; Electric machine control; Power electronics; State feedback; Synchronous motors; Variable speed drives; Buck converters; DC-link voltages; Full state feedback; Full-state feedback control; Motor drive; Motor state; Motor state augmented full-state feedback control; State feedback control; Variable DC-link; Variable DC-link voltage; Electric drives
Type
conference paper