scholarly journals Investigation into fault tolerant capability of new modular low‐speed and high‐torque direct‐drive permanent magnet motor based on unequal span winding

2021 ◽  
Author(s):  
Baoping Gan ◽  
Bingyi Zhang ◽  
Qiaoshan Li ◽  
Guihong Feng
Keyword(s):  
Permanent Magnet ◽  
Fault Tolerant ◽  
Direct Drive ◽  
Permanent Magnet Motor ◽  
Low Speed ◽  
High Torque

Analysis of Electromagnetic Field and Temperature Field of Low Speed High Torque Permanent Magnet Motor under Locked-Rotor Operation

2011 ◽  
Vol 383-390 ◽  
pp. 2963-2967 ◽  
Author(s):  
Lin Suo Zeng ◽  
Li Zhu Sun
Keyword(s):  
Electromagnetic Field ◽  
Temperature Field ◽  
Permanent Magnet ◽  
Working Conditions ◽  
Direct Drive ◽  
Permanent Magnet Motor ◽  
Temperature Field Distribution ◽  
Low Speed ◽  
Drive Motor ◽  
High Torque

Low speed high torque direct drive motor has been widely applied in various industries. However, operation faults occur frequently due to the complex working conditions of the motor, especially the locked-rotor fault. Therefore, it is necessary to do deeply research in this case of the electromagnetic field and the temperature field distribution of the motor. Taking a 5kW, 10-pole tangential type Low speed high torque permanent magnet (PM) motor for example, based on field-circuit coupled finite element method, 2-D motor field, circuit and motion coupling is achieved. On this basis, the temperature field of the motor is analyzed. Finally the results which are consistent with the actual project are obtained.

scholarly journals A Novel Direct-Drive Permanent Magnet Synchronous Motor with Toroidal Windings

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 432 ◽  
Author(s):  
Caixia Gao ◽  
Mengzhen Gao ◽  
Jikai Si ◽  
Yihua Hu ◽  
Chun Gan
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Finite Element Models ◽  
The Novel ◽  
Direct Drive ◽  
Low Speed ◽  
Field Versus ◽  
Drive Motor ◽  
High Torque

A direct-drive motor has the merits of low speed, high torque, and elimination of mechanical deceleration mechanisms, and is widely used in various fields. A novel direct-drive permanent magnet synchronous motor is presented herein, in which all coils are wrapped around the stator yoke in the same orientation. The structure of the novel direct-drive permanent magnet synchronous motor with toroidal windings (N-TWDDPMSM) is introduced and its operating principle is analyzed by describing the variation in the armature magnet field versus time. Furthermore, based on the same power grade and mechanical size, several finite-element models of motors with different windings are established using Magnet software to analyze the distribution of magnetic field, back-electromotive force (back-EMF), power-angle characteristics, loss characteristics, etc. Compared with the traditional permanent magnet synchronous motor (T-PMSM), the traditional permanent magnet synchronous motor with toroidal windings (T-TWPMSM), and the N-TWDDPMSM, the N-TWDDPMSM shows advantages of low speed and high torque, and the feasibility and superiority of the N-TWDDPMSM are verified.

Development and Application of Low-Speed and High-Torque Permanent Magnet Synchronous Motor

2012 ◽  
Vol 229-231 ◽  
pp. 888-894 ◽  
Author(s):  
Jun Guo Cui ◽  
Wen Sheng Xiao ◽  
Jian Bo Zhao ◽  
Jing Xi Lei ◽  
Xiao Dong Wu ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Torque Ripple ◽  
Synchronous Motor ◽  
Economic Benefits ◽  
Direct Drive ◽  
Low Speed ◽  
Wide Range ◽  
High Torque ◽  
Pumping Unit

To meet the demands of direct-drive petroleum equipment, developed a low-speed and high-torque permanent magnet synchronous motor. By analyzing and identifying the suitable key parameters such as permanent magnet structure parameters, air gap length, type and size of Stator Slot and so on, designed permanent magnet synchronous motor with the torque 10800 Nm, the rated speed 30 r/min and high efficiency and power factor. Obtained the flux density distribution situation and characteristic curves under no-load working condition through simulation and analysis. Manufactured the low-speed and high-torque permanent magnet synchronous motor and applied it to pumping unit. Test results show that this motor has many advantages such as wide range of speed regulation, small torque ripple, smooth operation and other characteristics. The Direct-drive Pumping Unit used this permanent magnet synchronous motor can save 20% energy than the beam pumping unit, so its social and economic benefits are significant.

Research on Cogging Torque for Low-Speed and Direct-Drive PMSM

2012 ◽  
Vol 516-517 ◽  
pp. 1610-1613
Author(s):  
Bing Yi Zhang ◽  
Sen Wang ◽  
Gui Hong Feng
Keyword(s):  
Permanent Magnet ◽  
Direct Drive ◽  
Permanent Magnet Motor ◽  
Cogging Torque ◽  
Low Speed

The paper attempts to present some effective methods to reduce cogging torque for low-speed and direct-drive(LSDD) permanent magnet motor.

scholarly journals Design and Analysis of a Low-Speed and High-Torque Dual-Stator Permanent Magnet Motor With Inner Enhanced Torque

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 182984-182995
Author(s):  
Jiaxu Zhang ◽  
Bingyi Zhang ◽  
Guihong Feng ◽  
Baoping Gan
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Motor ◽  
Low Speed ◽  
High Torque

Analysis, Design and Prototyping of a Low-Speed High-Torque Six-Phase Fault-Tolerant Permanent Magnet Synchronous Machine for EVs

2013 ◽  
Vol 416-417 ◽  
pp. 66-72
Author(s):  
Ping Zheng ◽  
Fan Wu ◽  
Yi Sui ◽  
Peng Fei Wang ◽  
Bin Yu
Keyword(s):  
Permanent Magnet ◽  
Fault Tolerant ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Synchronous Machine ◽  
Permanent Magnet Synchronous Machine ◽  
Low Speed ◽  
Analysis Design ◽  
High Torque ◽  
The One

This paper deals with a low-speed high-torque six-phase fault-tolerant permanent magnet synchronous machine (PMSM) for wheel-driving electric vehicle (EV) applications. In machine design, winding arrangements and feasible slot/pole combinations are discussed and compared; a 24-slot/22-pole alternate-teeth-wound scheme is analyzed and designed. With reinforced slot-leakage component, the inductance of the machine is increased to restrain the one-phase short-circuit current to nearly 1.0 per unit preventing the machine from deteriorations in condition of that fault. The 24-slot/22-pole alternate-teeth-wound prototype machine is manufactured and the experimental verification is provided.

scholarly journals Design and Experimental Validation for Direct-Drive Fault-Tolerant Permanent-Magnet Vernier Machines

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Guohai Liu ◽  
Junqin Yang ◽  
Ming Chen ◽  
Qian Chen
Keyword(s):  
Permanent Magnet ◽  
Experimental Validation ◽  
Fault Tolerant ◽  
Design Method ◽  
High Reliability ◽  
Direct Drive ◽  
Torque Density ◽  
Time Stepping ◽  
Flux Modulation ◽  
High Torque

A fault-tolerant permanent-magnet vernier (FT-PMV) machine is designed for direct-drive applications, incorporating the merits of high torque density and high reliability. Based on the so-called magnetic gearing effect, PMV machines have the ability of high torque density by introducing the flux-modulation poles (FMPs). This paper investigates the fault-tolerant characteristic of PMV machines and provides a design method, which is able to not only meet the fault-tolerant requirements but also keep the ability of high torque density. The operation principle of the proposed machine has been analyzed. The design process and optimization are presented specifically, such as the combination of slots and poles, the winding distribution, and the dimensions of PMs and teeth. By using the time-stepping finite element method (TS-FEM), the machine performances are evaluated. Finally, the FT-PMV machine is manufactured, and the experimental results are presented to validate the theoretical analysis.

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