Voltage Control Strategy for Direct-drive Robots Driven by Permanent Magnet Synchronous Motors

Permanent magnet synchronous machines with non-overlapping concentrated fractional-slot windings present certain improved electrical characteristics compared to full pitch windings configurations. This paper describes the design process and construction of two 10-pole permanent magnet synchronous motors, featuring full-pitch and fractional-pitch windings. The paper compares these two configurations in terms of performance and efficiency. Both motors have been designed for direct-drive applications with low speed and high efficiency capability and are intended to be used as a traction drive in an electric prototype vehicle. The proposed motors have external rotor configuration with surface mounted NdFeB magnets. The electromagnetic characteristics and performance are computed and analyzed by means of finite elements analysis. These results are finally compared with the experimental measurements on respective prototypes.

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A predictive torque control strategy for interior permanent magnet synchronous motors driven by a three-level simplified neutral point clamped inverter

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society ◽

10.1109/iecon.2016.7793544 ◽

2016 ◽

Cited By ~ 2

Author(s):

Tung Ngo ◽

Gilbert Foo ◽

Craig Baguley

Keyword(s):

Permanent Magnet ◽

Control Strategy ◽

Neutral Point ◽

Torque Control ◽

Permanent Magnet Synchronous Motors ◽

Synchronous Motors ◽

Torque Control Strategy ◽

Interior Permanent Magnet

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Discrete Current Control Strategy of Permanent Magnet Synchronous Motors

Journal of Applied Mathematics ◽

10.1155/2013/525014 ◽

2013 ◽

Vol 2013 ◽

pp. 1-9

Author(s):

Yan Dong ◽

Kai Jing ◽

Hexu Sun ◽

Yi Zheng

Keyword(s):

Magnetic Field ◽

Permanent Magnet ◽

Control Strategy ◽

Direct Torque Control ◽

Current Control ◽

Torque Control ◽

Rotating Magnetic Field ◽

Permanent Magnet Synchronous Motors ◽

Magnetomotive Force ◽

Synchronous Motors

A control strategy of permanent magnet synchronous motors (PMSMs), which is different from the traditional vector control (VC) and direct torque control (DTC), is proposed. Firstly, the circular rotating magnetic field is analyzed on the simplified model and discredited into stepping magnetic field. The stepping magnetomotive force will drive the rotor to run as the stepping motor. Secondly, the stator current orientation is used to build the control model instead of rotor flux orientation. Then, the discrete current control strategy is set and adopted in positioning control. Three methods of the strategy are simulated in computer and tested on the experiment platform of PMSM. The control precision is also verified through the experiment.

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DC‐link voltage control strategy of Z‐source inverter for high‐speed permanent magnet motor

IET Electric Power Applications ◽

10.1049/iet-epa.2019.0535 ◽

2020 ◽

Vol 14 (5) ◽

pp. 911-920 ◽

Cited By ~ 2

Author(s):

Haokun Wu ◽

Keyuan Huang ◽

Wei Lv ◽

Xiaoling Mo ◽

Shoudao Huang

Keyword(s):

Permanent Magnet ◽

Control Strategy ◽

High Speed ◽

Voltage Control ◽

Permanent Magnet Motor ◽

Voltage Control Strategy

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Research on the Axial Force of Conical-Rotor Permanent Magnet Synchronous Motors with Turbines

Energies ◽

10.3390/en11102532 ◽

2018 ◽

Vol 11 (10) ◽

pp. 2532 ◽

Cited By ~ 1

Author(s):

Jiabao Wang ◽

Shoudao Huang ◽

Chao Guo ◽

Yaojing Feng

Keyword(s):

Permanent Magnet ◽

Axial Force ◽

Magnetic Force ◽

Permanent Magnet Synchronous Motor ◽

System Structure ◽

Direct Drive ◽

Permanent Magnet Synchronous Motors ◽

Synchronous Motors ◽

Conical Rotor ◽

General Method

The general method to suppress the axial force of the permanent magnet synchronous motor (PMSM) direct-drive turbine is to increase the number of balance devices, such as balance disks and special bearings, to counteract its influence, but this also leads to complex system structure and higher mechanical losses. Aiming to solve the above issue, this paper presents a novel PMSM structure with a conical-rotor (CR). Due to its adaptive equilibrium of axial force and simple structure of rotor with turbine, the CR-PMSM can help improve the system efficiency. Both surface-type and interior-type motors are analyzed, and the axial magnetic force of CR-PMSM is studied in detail. The 3-D finite-element method (FEM) is used to model and simulate the machine, and the magnetic-field distribution, axial magnetic force and driving performance are obtained. Also, the control rule of d-axis current is analyzed to achieve the adaptive equilibrium of axial force. A 2.0 kW, 6000 r/min prototype motor is fabricated and tested to validate the theory.

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