Fundamental study on rotor eddy current losses in high frequency machines due to current harmonics

Moghaddam, Reza-Rajabi

doi:10.1109/ecce.2015.7310045

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…However, an adequate commutation instant setting and tuning are recognized as the most challenging issues in obtaining a highefficiency SynRM drive [4,5]. In particular, the inherent slotting effect [5][6][7][8][9] must also be considered, especially for a sensorless SynRM drive. A few advanced current control approaches [5,10,11] have been developed for achieving better performance considering the nonlinear behavior of SynRM.…”

Section: Introductionmentioning

confidence: 99%

A Highly-efficiency Position Sensorless Electric Vehicle Synchronous Reluctance Motor Drive

Kumar¹,

Lu²,

Liaw³

2021

JEPT

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The development of high-efficiency motor drives for various applications is important in the industry 4.0 era, especially for their extensive application to electric vehicles (EVs). In this study, a position sensorless EV synchronous reluctance motor (SynRM) drive has been developed, which exhibits good driving performance and efficiency over a wide speed and load range. To solve the key problems popularly encountered in the existing approaches, the high-frequency injection (HFI) scheme based on q-axis injection has been proposed. In addition, the changed-frequency injection has been adopted considering the effects of speed/load dependent slotting ripple current. Robust observed speed and position controllers have been added to enhance the sensorless control performance. For the SynRM basic driving control scheme, robust current control and adaptive commutation with minimized motor losses have been achieved that yield satisfactory driving performance up to the rated speed and load. Good EV driving performance has been demonstrated experimentally, including starting, dynamic, acceleration/deceleration, and reversible operations. In addition, the steady-state characteristics have been assessed, and the high efficiencies have been observed to be comparable to the standard drive.

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