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Speed Sensorless Direct Torque and Flux Control Five-Phase Interior Permanent Magnet Motor Based on Adaptive Sliding Mode Control

Jafar Shishehgar(1*), Jafar Soltani(2), Navid Reza Abjadi(3)

(1) Department of Electrical and Computer Engineering Islamic Azad University, Khomeinishahr Branch, Iran, Islamic Republic of
(2) Department of Electrical and Computer Engineering Islamic Azad University, Khomeinishahr Branch Isfahan, Iran, Iran, Islamic Republic of
(3) Department of Electrical and Computer Engineering Shahrekord University,Shahrekord, Iran, Iran, Islamic Republic of
(*) Corresponding author



In this paper, a nonlinear controller is designed for the direct torque and flux control of speed sensorless five-phase interior permanent magnet synchronous motors (IPMSM) based on adaptive sliding mode. A sliding mode torque and flux controller is developed to improve the classical direct torque control performance. Designed controller outputs generate the reference voltage commanding to space vector modulation (SVM) inverter. Having 32 space voltage vectors provides a great flexibility in selecting the inverter switching states. Therefore, the stator flux and torque can be more precisely adjusted. A space vector modulation is combined with the SMC to ensure minimum ripple content and high resolution voltage control. Speed is being estimated based on relation of torque and power. With the proposed control system, the controlled IPMSM drive possesses the advantage of good transient performance robustness to parametric uncertainties. The novel simple method of maximum torque per ampere (MTPA) will introduce.
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Direct Torque and flux Control; SVM; Five-Phase Permanent-Magnet Motor; Adaptive Sliding-Mode Control; MTPA

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