Double magnetic circuit asynchronous start permanent magnet synchronous motor rotor
A technology of asynchronous starting and permanent magnet synchronization, which is applied to electrical components, electromechanical devices, etc., and can solve problems such as unsuitable for small-sized motors and complex structures.
Active Publication Date: 2016-06-08
HEPING CHANGSHENG MOTOR CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the defects of the traditional built-in rotor with complex structure and not suitable for small-sized motors, and to provide a dual-magnetic circuit asynchronous start permanent magnet synchronous motor rotor with simple structure, asynchronous start, and large starting torque
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Embodiment Construction
[0045] The present invention is further described below in conjunction with accompanying drawing.
[0046] refer to figure 1 and figure 2 , The rotor of the dual magnetic circuit asynchronous start permanent magnet synchronous motor has two rotor cores, and the two rotor cores are coaxial and staggered by a certain angle to form two rotor permanent magnet magnetic circuits. In a pair of opposite magnetic poles of each rotor core, only one permanent magnet is used as one magnetic pole, and the salient pole of the rotor core is used as the other magnetic pole. There is a rotor yoke between the two rotor cores, and the rotor yoke connects a pair of stator magnetic poles of opposite sex through the stator field magnetic circuit of the salient poles of the two rotor cores. The rotor of double magnetic circuit asynchronous start permanent magnet synchronous motor has two structures: inner rotor type and outer rotor type.
[0047] The rotor of the inner rotor double magnetic circ...
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The present invention is a double magnetic circuit asynchronous starting permanent magnet synchronous motor rotor, which relates to a rotor applied to a permanent magnet synchronous motor. The rotor has two rotor iron cores, and the two rotor iron cores are coaxial and staggered by a certain angle. Two rotor permanent magnet magnetic circuits are formed. In a pair of opposite magnetic poles of each rotor core, only one permanent magnet is used as one magnetic pole, and the salient pole of the rotor core is used as the other magnetic pole. There is a rotor yoke between the two rotor cores, and the rotor yoke connects a pair of stator magnetic poles of opposite sex through the stator field magnetic circuit of the salient poles of the two rotor cores. At any moment during the starting process of the rotor, the magnetic field line path of the stator rotating magnetic field cut by the core squirrel cage guide bar inside the salient pole of each rotor core passes through the air gap of the salient pole twice, and the magnetic resistance of the magnetic circuit of the stator rotating magnetic field is the smallest, so that The rotor of the double magnetic circuit asynchronous start permanent magnet synchronous motor produces the maximum starting torque.
Description
technical field [0001] The invention relates to a permanent magnet synchronous motor rotor with dual magnetic circuits asynchronous start, which relates to a rotor applied to permanent magnet synchronous motors, in particular to a permanent magnet synchronous motor rotor capable of asynchronous starting with dual magnetic circuits. Background technique [0002] AC asynchronous motors have the advantages of simple structure and low cost. The efficiency of AC asynchronous motors is low, and the efficiency of small AC asynchronous motors is even lower. Compared with AC asynchronous motors, permanent magnet synchronous motors have a high power factor and significant energy-saving effect, so permanent magnet synchronous motors are gradually replacing AC asynchronous motors as mainstream motors. Ordinary permanent magnet synchronous motors cannot start automatically and need to be equipped with a frequency converter, but the cost of the frequency converter is relatively high. Th...
Claims
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IPC IPC(8): H02K16/02
Inventor 赵晓东
Owner HEPING CHANGSHENG MOTOR CO LTD