Aerospace Defense

Laboratory implementation of sensorless vector control of PMSM motor, using sliding mode observer and phase-locked loop

Document Type : Original Article

Authors

Mohammad Veysi 1
Mohammad Farahmand Rad 2
Seyed Mehdi Emami 2
Hamid Balouchestani 2

1 Postgraduate Education Center

2 Researcher

Abstract
In this paper, a rotor position estimation algorithm based on sliding mode observer (SMO) and phase-locked loop (PLL) for permanent magnet synchronous motor (PMSM) control in STM32L431RCT6 microcontroller is presented. The proposed SMO and PLL-based observer has two advantages compared to the conventional SMO observer: reducing the undesirable phenomenon of chattering and improving the accuracy of rotor position estimation. In this research, a hybrid sensorless control system for PMSM drive has been designed, using the I-f startup method and a smooth transition to sensorless closed-loop vector control with SMO and PLL. C programming language is used to implement field vector control, phase-locked loop, sliding mode observer, proportional-integral controllers, space vector pulse width modulation, and coordinate transformations. The proposed method is implemented using STM32 family 32-bit microcontrollers. In the following, the presented laboratory results show the desirable performance of the proposed observer.

Keywords

Sliding Mode Observer
I-f Drive method
Sensorless Control
Phase-Locked Loop
STM32 Microcontroller

Subjects

  •  

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Aerospace Defense
Volume 2, Issue 4
Autumn 2024
Pages 39-57

  • Receive Date 25 February 2024
  • Revise Date 21 April 2024
  • Accept Date 28 April 2024

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