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Virtual voltage vector based predictive current control of speed sensorless induction motor drives.

Adrish Bhaumik1, Sukanta Das1

  • 1Department of Electrical Engineering, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, Pin-826004, India.

ISA Transactions
|July 23, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a virtual voltage vector (V3) enhanced predictive current control (PCC) for electric drives. The V3PCC strategy effectively reduces current harmonics and torque ripple, improving drive performance.

Keywords:
Induction motorPredictive controlSensorlessSpeed estimationVoltage vector

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Area of Science:

  • Electrical Engineering
  • Control Systems
  • Power Electronics

Background:

  • Predictive Current Control (PCC) offers flexibility and fast response in electric drives.
  • Conventional PCC strategies can lead to significant stator current harmonics and torque ripple.
  • Existing methods often lack effective delay compensation and are parameter sensitive.

Purpose of the Study:

  • To introduce a novel Virtual Voltage Vector based Predictive Current Control (V3PCC) strategy.
  • To enhance the performance of electric drives by mitigating current harmonics and torque ripple.
  • To improve delay compensation and reduce parameter sensitivity compared to conventional methods.

Main Methods:

  • Implementation of the Virtual Voltage Vector (V3) concept within the PCC framework.
  • Development of mathematical steps for enhanced delay compensation and reduced parameter sensitivity.
  • Comparative analysis with a V3-based Predictive Flux Control (PFC) scheme.
  • Utilizing a speed adaptive flux observer for sensorless speed estimation.
  • Performance evaluation using MATLAB/Simulink simulations and experimental verification on a 2.2 kW induction motor drive.

Main Results:

  • The proposed V3PCC demonstrates superior performance in reducing stator current harmonics.
  • Significant reduction in steady-state flux and torque ripple was observed.
  • The V3PCC scheme exhibited improved delay compensation and lower parameter sensitivity.
  • Sensorless operation was successfully achieved and validated.

Conclusions:

  • The V3PCC strategy is a highly effective method for improving the performance of electric drives.
  • It offers a robust solution for mitigating harmonics and ripple in induction motor drives.
  • The V3PCC provides a promising alternative to conventional control strategies, especially in sensorless applications.