Due to the strict constraints with winding structures and slot-pole combinations of conventional fault-tolerant interior permanent magnet (FT-IPM) motors, desired sensorless operating performance is difficult be implemented. Hence, this article proposes a new five-phase flux-intensifying FT-IPM motor characteristics obvious stable inverse saliency ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">L_d</i> >...

A fault-tolerant MTPA control strategy of five-phase flux-intensifying permanent magnet synchronous motor (FI-FTPMSM) under open-circuit and short-circuit faults is presented. In previous studies, existing strategies suffer from weak robustness to the parameter variation, which not suitable for utilization reluctance torque FI-FTPMSM. this article, a FTPMSM with effect designed proposed. To fully utilize fault conditions, an extended VSI-MTPA compensation factor proposed, can improve dynamic...

Under the flux-weakening (FW) operation, sensorless control of a five-phase flux-intensifying permanent magnet (FP-FIPM) motor faces dilemma reduced torque output and poor estimated accuracy caused by serious space coupling between FW control. To overcome abovementioned problems, novel decoupling strategy for FP-FIPM under operation is proposed in this article. Based on model motor, article first proposes dual design to achieve For control, an adaptive third-harmonic current injection based...

A comparative study of new partitioned stator hybrid excitation axial flux switching permanent magnet (HEAFSPM) motors with different topologies for in-wheel traction applications is presented in this paper. The realization approaches the HEAFSPM motor are discussed, and topology windings magnets (PMs) separately setting on stators selected view advantageous structure thermal management. On basis, two including C-type tooth core T-type configuration proposed, air-gap modulation regulation...

Nowadays, with increasing concerns about environmental pollution and energy crisis electric vehicles are rapidly developing owing to their significant environmental-friendly benefits. To meet the diverse driving requirements of vehicles, PM motors high-performance rare-earth PMs have been widely employed in vehicle powertrains, which shows performance merits high power density efficiency. Yet, PMs, as non-renewable strategic resources, usually suffer from unstable supply fluctuation prices,...

For the sensorless control system of five-phase interior permanent magnet (IPM) motors, its saturation effect greatly affects estimated accuracy rotor position, which will not meet requirement multi-operating conditions for electric vehicles (EVs). To solve problem, a new active strategy is proposed from perspective motor drive system. Based on analysis influence position observation, flux-intensifying fault-tolerant IPM (FIFT-IPM) with enhanced reverse saliency effect. Thus, cross-coupling...

This article proposes a multiple mode current (MMC) control for hybrid-excitation axial flux switching permanent magnet (HE-AFSPM) motors considering driving cycles. To satisfy the diverse and compound demands in operating condition of electric vehicles, model predictive is adopted, vector prediction method including <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">d</i> -axis current, xmlns:xlink="http://www.w3.org/1999/xlink">q</i> dc...

This article proposes a new five-phase flux-intensifying fault-tolerant interior-permanent-magnet (FIFT-IPM) motor to realize high fault tolerance and sensorless operating capacity of the drive system for electric vehicles (EVs). By employing concept flux intensifying, proposed owns outstanding characteristic L <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">d</sub> > xmlns:xlink="http://www.w3.org/1999/xlink">q</sub> , which can contribute...

A generalized fault-tolerant control (FTC) strategy for the field-oriented (FOC) and direct torque (DTC) of five-phase permanent magnet (FPFTPM) motors under various open-circuit faults is presented in this article. Most previous studies regarding FTC target a specific primary algorithm involve different reduced-order transformation matrices additional current controllers, which increase complexity entire drive system. In study, solution to aforementioned problems devised by developing...

Discrete element modelling (DEM) is a numerical method for examining the dynamic behavior of granular media. In order to build an accurate simulation model and provide more comprehensive soil characteristic parameters design optimization various contact machinery, in this paper, discrete (EDEM) combined with experimental approach used investigate East Asia. study, Hertze-Mindlin (no slip) was as particle by taking JKR (Johnson-Kendall-Roberts) surface energy determinants, repose angle,...

In this paper, a new flux-intensifying fault-tolerant permanent magnet synchronous motor (FI-FTPMSM) is proposed to improve sensorless operating capacity under multimode operation including fault conditions. Most previous studies regarding motors aim capability but suffer the saliency characteristic problem, which unfavorable for control. study, an active strategy developed by considering in design stage. Based on novel idea, FI-FTPMSM with high inverse ratio designed. By carefully choosing...

Abstract This paper proposes a new low‐noise sensorless control strategy for the permanent magnet synchronous motor (PMSM) drives to tackle audible noise caused by high‐frequency injection method. The traditional reduction methods face limitation in improving estimated accuracy of rotor position due signal delay with fixed frequency signal. To overcome this issue, is developed, which consists two parts. First, proposed variable‐frequency voltage signal, significant can be achieved its...

This paper proposes a hybrid adaptive robust observation (HARO)-based sensorless control strategy of five-phase fault-tolerant permanent-magnet (FPFTPM) motor for electric agricultural equipment applications under various operating conditions, including fault conditions. Regarding control, the existing studies usually treat and as two independent units rather than unified system, which makes algorithm complex. In addition, traditional algorithm, system needs to switch after diagnosis when...

Strong fault tolerance is of great significance for motor systems. To satisfy the demands multiple operations, this paper proposes a new flux-intensifying fault-tolerant interior permanent magnet (FIFT-IPM) that enables strong tolerance, good sensorless capacity, and torque performance. Due to strict constraints with winding structures slot-pole combinations traditional motors, their compound stator position sensors by design difficult implement. Hence, in study, concept "multiple...

Peeling is a crucial part of the tomato deep processing procedure, and choice peeling method directly affects quality peeling. As far as conventional methods are concerned, They still energy water-intensive have adverse effects on environment. The often used in field were reviewed this article, including manual, mechanical, chemical, or steam, current novel methods, such enzymatic peeling, pulse electric infrared high-humidity hot air impingement blanching ohmic heating-assisted lye...

In this paper, considering the oceanic multiple degree of freedom motion, a double stator linear-rotary permanent magnet (DSLRPM) generator with Halbach PM array is proposed for direct drive ocean energy conversion. It focuses on power maximization generation resulting in highly optimized DSLRPM to improve generated conversion system complex condition. Based power-oriented design concept, whole process divided into two steps. initial procedure, operating domain conducted, and point selected....