A Novel Speed Controller of Ultra-High-Speed PMSM for A-Mechanically-Based-Antenna (AMEBA)

Abstract

A robust and anti-disturbance speed controller for an ultra-high-speed permanent magnet synchronous machine (UHS-PMSM) is proposed to assist A Mechanically Based Antenna (AMEBA) in an RF-denied environment such as underwater and underground facilities. A 2kW, 8.33kHz, high-power-density UHS-PMSM is designed for operating the AMEBA. Robust high-speed control of this motor is crucial for an accurate transmission of the signal. However, motor performance and system stability deteriorate due to parameter variation at increased temperature and frequency. To address these issues, a novel fast Anti-Disturbance Sliding Mode-based Deadbeat Model Predictive (ADSM-DMP) control is proposed for precise speed control and to minimize the effect of dynamic parameter variation. The proposed controller achieves 47.7% faster settling time, 96.7% reduction in average torque fluctuation, and 12.46% reduced total harmonic distortion (THD) in current. For experimentally validating the proposed controller, cascode GaN-FET based inverter is designed to operate in high frequency and high-temperature regions.