DESIGN OF ROTORS OF SYNCHRONOUS MOTORS WITH PERMANENT MAGNETS

Ilhomjon Qodirov

Authors

 

Safin A.R. – candidate of technical sciences, associate professor of the Department of Power Supply of Industrial Enterprises (EPP), Kazan State Power Engineering University (KSPEU), Kazan, Republic of Tatarstan, Russia, sarkazan@bk.ru

Ivshin I.V. – Doctor of Technical Sciences, Head of the Department of Power Supply of Industrial Enterprises (EPP), Kazan State Power Engineering University (KSPEU), Kazan, Republic of Tatarstan, Russia, ivshini@mail.ru

Gracheva E.I. – Doctor of Technical Sciences, Professor of the Department of Power Supply of Industrial Enterprises (EPP), Kazan State Power Engineering University (KSPEU), Kazan, Republic of Tatarstan, Russia, grachieva.i@bk.ru

Petrov T.I. – Assistant, Department of Power Supply of Industrial Enterprises (EPP), Kazan State Power Engineering University (KSPEU), Kazan, Republic of Tatarstan, Russia, tobac15@mail.ru

 

Annotation

 

  The article proposes a modern method for designing and optimizing synchronous motors with permanent magnets through the use of genetic algorithms. Operation of synchronous machines, for example, instead of asynchronous for electric drive sucker-rod pumping units, will make it possible to obtain higher energy efficiency parameters, and also the motors have a compact design. The structure of synchronous motors makes them much smaller and lighter than similar asynchronous motors. Synchronous machines are up to 40 percent more compact than a similar induction motor. They correspond to the standard size that is less than two standard size, which creates an opportunity for a more compact design of the machine. In addition, synchronous machines weigh 50 percent less and its inertia is 60 percent lower than that of a similar induction motor.

Designing an electric machine as a heuristic process does not guarantee a better solution. Methods are needed that complement the designer’s experience and intuition to find the optimal (rational) solution. Topological optimization is currently being performed using the finite element method to reduce mass and improve the stiffness characteristics of structures. The proposed method allows you to transfer topological optimization to electromagnetic processes in synchronous motors to determine the direction of magnetization of permanent magnets, the number of phases and turns of the windings, the dimensions of the grooves of the stator and permanent magnets in order to increase the efficiency and reliability of the electric machine at specified mass and dimension parameters.

 

Key words

 

 synchronous motor, permanent magnets, topological optimization, energy efficiency

 

 

References

 

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Publication date

2023-10-26