Rotor assembly, motor and compressor
A component and rotor technology, applied in the direction of magnetic circuit rotating parts, connection with control/drive circuits, shape/style/structure of winding conductors, etc., can solve problems such as difficulty in changing the number of rotor poles, affecting motor efficiency and performance, etc.
Pending Publication Date: 2020-06-16
常州威灵电机制造有限公司 +1
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Problems solved by technology
The rotor of the motor is provided with an excitation winding, and the number of rotor poles of the motor is determined by the connection method of the excitation winding. When the motor leaves the factory, it is difficult to change the number of rotor poles of the motor, which directly affects the efficiency and performance of the motor.
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[0047] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0048] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.
[0049] Refer below Figure 1 to Figure 5 A rotor assembly, an electric machine and a compressor according to some embodiments of the invention are described.
[0050] According to the first aspect ...
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The invention provides a rotor assembly, a motor and a compressor. The rotor assembly comprises a rotor iron core, a plurality of winding grooves, a circuit board and a plurality of excitation coils;the plurality of winding grooves are arranged on the rotor iron core; each of the plurality of winding grooves is through along the axial direction of the rotor iron core; the circuit board is arranged at one end of the rotor iron core and is provided with a power adjusting circuit; each of the plurality of excitation coils passes through at least two of the winding grooves to be arranged on the rotor iron core; two ends of each excitation coil are provided with wiring terminals, wherein the two wiring terminals are connected in the power adjusting circuit. According to the rotor assembly, themotor and the compressor of the invention, the magnitude and / or direction of current flowing through the magnet excitation coil are / is adjusted through the power adjusting circuit, so that the numberof poles of the rotor of the motor is changed, an air-gap magnetic field waveform is improved, magnetic field harmonics are reduced, and the efficiency of the motor is effectively improved.
Description
technical field [0001] The present invention relates to the technical field of motors, in particular to a rotor assembly, a motor and a compressor. Background technique [0002] At present, the motor is an indispensable electromechanical energy conversion device in daily life, industrial and agricultural production. The rotor of the motor is provided with an excitation winding, and the number of rotor poles of the motor is determined by the connection method of the excitation winding. After the motor leaves the factory, it is difficult to change the number of rotor poles of the motor, which directly affects the efficiency and performance of the motor. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art. [0004] To this end, a first aspect of the present invention is to propose a rotor assembly. [0005] A second aspect of the invention consists in proposing an electric mac...
Claims
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IPC IPC(8): H02K1/26H02K3/16H02K11/33
CPCH02K1/26H02K3/16H02K11/33
Inventor 张磊吴迪程云峰
Owner 常州威灵电机制造有限公司