Alternating-current phase conversion motor for converting two-phase symmetrical alternating current into single-phase alternating current
A single-phase AC, AC motor technology, applied in AC motor control, multi-phase network asymmetry reduction, multi-phase network elimination/reduction of asymmetry, etc., can solve the problem of low reliability, high cost, three-phase current imbalance and other problems, to achieve the effect of low cost, high reliability and simple structure
Pending Publication Date: 2019-06-25
CHINA CREC RAILWAY ELECTRIFICATION BUREAU GRP
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Problems solved by technology
Although they solve the problems of three-phase current imbalance, harmonics and reactive power, they still have the disadvantages of complex system, high cost and relatively low reliability.
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[0032] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0033] The invention discloses an AC motor for converting two-phase alternating current into single-phase alternating current, such as Figure 1-Figure 5 As shown, it includes a two-stage rotor 3 arranged on the single shaft of the AC motor, and the two-stage rotor 3 is provided with a through damping winding 8; the first section of the stator 1 sleeved at one end of the rotor 3, the first section of the stator 1 is provided with a first input winding 4 and a first output winding 5; a second segment of the stator 2 sleeved at the other end of the rotor 3, and a second segment of the stator 2 is provided with a second input winding 6 and a second output winding 7, Th...
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The invention discloses an alternating-current motor for converting two-phase alternating current into single-phase alternating current. The alternating-current motor comprises a rotor, a first section of stator and a second section of stator. The rotor is arranged on the rotating shaft of the alternating-current motor. The first section of stator is arranged on the outer side of the rotor, and isequipped with a first input winding and a first output winding. The second section of stator is arranged on the outer side of the rotor, and is equipped with a second input winding and a second output winding. The first output winding is connected with the second output winding. The first input winding is connected to the first output winding by electromagnetic coupling. The second input windingis connected to the second output winding by electromagnetic coupling. The axis of the first input winding is 90 electrical degrees ahead of the axis of the second input winding. The axis of the firstoutput winding is 45 electrical degrees lagging behind the axis of the first input winding. The axis of the second output winding is 45 electrical degrees ahead of the axis of the second input winding. The alternating-current motor of the invention converts two-phase alternating current into single-phase alternating current, and the problem of three-phase imbalance is solved. The alternating-current motor has high reliability and low cost.
Description
technical field [0001] The invention belongs to the technical field of motors, and in particular relates to an AC phase-changing motor for converting two-phase symmetrical alternating currents into single-phase alternating currents. Background technique [0002] In the global electric power industry, three-phase alternating current has occupied an absolute dominant position, but because of the existence of single-phase load, the three-phase load still has unbalanced problems. my country's electrified railway adopts single-phase power frequency AC system, but the problems of three-phase current imbalance, harmonics, and reactive power still exist, especially the three-phase current imbalance problem is the most prominent. In order to solve this problem, in the prior art, electrified railways usually adopt the following two methods: 1. adopt the technical route of AC-DC converter; 2. adopt the technical route of single-phase three-phase combined in-phase power supply device ba...
Claims
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Login to View More IPC IPC(8): H02K3/28H02P25/18H02P29/50H02J3/26
CPCY02E40/50
Inventor 肖书印苑玉超王健周静恒陆耀井邢军李国栋侯磊李晓坤李爱军罗月兵
Owner CHINA CREC RAILWAY ELECTRIFICATION BUREAU GRP