Increasing of output power capability in a six-phase flux-weakened permanent magnet synchronous motor with a third harmonic current injection

2003 ◽  
Vol 39 (5) ◽  
pp. 3343-3345 ◽  
Author(s):  
B. Stumberger ◽  
G. Stumberger ◽  
A. Hamler ◽  
M. Trlep ◽  
M. Jesenik ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Output Power ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Current Injection ◽  
Harmonic Current ◽  
Third Harmonic ◽  
Power Capability

scholarly journals A compare research on third harmonic current control for five-phase permanent magnet synchronous motor

2021 ◽  
Vol 39 (4) ◽  
pp. 865-875
Author(s):  
Tianxing Li ◽  
Ruiqing Ma ◽  
Hao Bai ◽  
Ping Fan ◽  
Yuchen Zhang
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Reference Value ◽  
Synchronous Motor ◽  
Electromagnetic Torque ◽  
Harmonic Current ◽  
Third Harmonic ◽  
The Third ◽  
Current Reference ◽  
Maximum Current

The injection of a third harmonic current can improve the electromagnetic torque output of the five-phase permanent magnet synchronous motor. In this paper, constant copper consumption and constant maximum current are used as constraints, and the influence of the ratio between the third harmonic current and the fundamental current on the electromagnetic torque under the two constraints is analyzed. The electromagnetic torque is the largest when the third harmonic current reference value is equal to the fundamental current reference value of ψf3/ψf times under the premise of the constant copper loss. On the premise that the maximum current is constant, the electromagnetic torque is the largest when the third harmonic current reference value is equal to the fundamental current reference value of kw/(6kw-kw3/3) times. On this basis, according to the vector amplitude, phase and action time, the changing trends of maximum voltage utilization rate with Vref3/Vref1 under three different kinds of methods are given. Finally, through the experimental platform, the control effects of the three kinds of SVPWM are compared under two constraint conditions.

scholarly journals Design and Optimization of a High-Speed Switched Reluctance Motor

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6733
Author(s):  
Stefan Kocan ◽  
Pavol Rafajdus ◽  
Ronald Bastovansky ◽  
Richard Lenhard ◽  
Michal Stano
Keyword(s):  
Permanent Magnet ◽  
Output Power ◽  
High Speed ◽  
Permanent Magnet Synchronous Motor ◽  
Switched Reluctance Motor ◽  
Torque Ripple ◽  
Synchronous Motor ◽  
Switched Reluctance ◽  
Design And Optimization ◽  
Reluctance Motor

Currently, one of the most used motor types for high-speed applications is the permanent-magnet synchronous motor. However, this type of machine has high costs and rare earth elements are needed for its production. For these reasons, permanent-magnet-free alternatives are being sought. An overview of high-speed electrical machines has shown that the switched reluctance motor is a possible alternative. This paper deals with design and optimization of this motor, which should achieve the same output power as the existing high-speed permanent-magnet synchronous motor while maintaining the same motor volume. The paper presents the initial design of the motor and the procedure for analyses performed using analytical and finite element methods. During the electromagnetic analysis, the influence of motor geometric parameters on parameters such as: maximum current, average torque, torque ripple, output power, and losses was analyzed. The analysis of windage losses was performed by analytical calculation. Based on the results, it was necessary to create a cylindrical rotor shape. The rotor modification method was chosen based on mechanical analysis. Using thermal analysis, the design was modified to meet thermal limits. The result of the work was a design that met all requirements and limits.

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