Dual three-phase synchronous motor and harmonic magnetic field oriented brushless excitation method thereof

A technology of synchronous motor and harmonic magnetic field, which is applied in the direction of synchronous motor, synchronous generator, and synchronous generator control for single-phase current, which can solve the problem of low utilization rate of harmonic excitation and achieve the goal of solving the problem of motor starting Effect

Active Publication Date: 2018-12-07
HARBIN INST OF TECH
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Problems solved by technology

[0004] Aiming at the above-mentioned problems of low utilization rate of motor starting and harmonic excitation, the present invention provides a dual-three-phase synchronous motor and a harmonic field-oriented brushless excitation method for the motor

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  • Dual three-phase synchronous motor and harmonic magnetic field oriented brushless excitation method thereof
  • Dual three-phase synchronous motor and harmonic magnetic field oriented brushless excitation method thereof
  • Dual three-phase synchronous motor and harmonic magnetic field oriented brushless excitation method thereof

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0026] combine figure 1 Describe this embodiment, a double three-phase synchronous motor described in this embo...

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Abstract

The invention provides a dual three-phase synchronous motor and a harmonic magnetic field oriented brushless excitation method thereof in allusion to problems of motor starting and low harmonic excitation utilization ratio, and belongs to the field of permanent magnet synchronous motors. According to the invention, a motor rotor is provided with a rotor DC excitation winding F and a rotor harmonicinduction winding H, the pitch of the rotor DC excitation winding is 1, the pitch of the rotor harmonic induction winding is 1/3, a motor stator winding is two sets of stator windings in star connection, the phase shift is 30 degrees, and neural points are connected together. The current waveform of the two sets of stator windings is controlled, the current of each three-phase stator winding is enabled to contain an alternating zero-sequence current component, the alternating zero-sequence current components of the two sets of stator windings are orthogonal in phase, harmonic magnetic field oriented control is performed according to the rotor position so as to enable the alternating harmonic magnetic field to induce the harmonic electromotive force in the rotor harmonic induction windingH, and thus a rotor main magnetic field is established through rotating, rectifying and supplying the rotor DC excitation winding F, so that brushless electrical excitation of the synchronous motor isrealized.

Description

technical field [0001] The invention relates to a synchronous motor, in particular to a double-three-phase synchronous motor and a harmonic magnetic field oriented brushless excitation method for the motor, belonging to the field of permanent magnet synchronous motors. Background technique [0002] Permanent magnet synchronous motors have gradually been widely used in the industry due to their characteristics of high efficiency and energy saving, high power density and brushless control. Especially in some small and medium power applications, such as electric vehicles, new energy power generation systems, etc. However, these advantages of permanent magnet motors are all based on high-performance rare earth permanent magnet materials. With the development of industry and society, the demand for rare earth resources will continue to increase. In the past ten years, the price of rare earth permanent magnet materials has increased several times, which will make rare earth reso...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K19/12H02K19/26H02K3/28H02P21/00H02P25/03H02P9/14H02P103/20
CPCH02K3/28H02K19/12H02K19/26H02K2213/03H02P9/14H02P21/00H02P2207/05H02P2103/20H02P25/03
Inventor 孙立志安群涛吕鑫源姚飞
Owner HARBIN INST OF TECH
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