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Electromagnetic design method for Y-wiring single phase capacitance run motor

A technology for electromagnetic design and electric motors, applied in the manufacture of motor generators, asynchronous induction motors, electromechanical devices, etc., can solve problems such as difficult performance and increased calculation

Inactive Publication Date: 2008-12-17
江门市洗衣机厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the traditional two-phase winding motor, the Y-connected single-phase capacitor running motor has one-dimensional design variables, and the amount of theoretical calculations according to the formula is greatly increased. In particular, various process factors affect the accuracy of calculations, so it is difficult to obtain better performance.

Method used

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  • Electromagnetic design method for Y-wiring single phase capacitance run motor
  • Electromagnetic design method for Y-wiring single phase capacitance run motor
  • Electromagnetic design method for Y-wiring single phase capacitance run motor

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Embodiment Construction

[0022] The embodiment of the present invention intends to design the winding expansion and wiring of a single-phase capacitor running motor for a Y-connection washing machine. figure 1 As shown, the 24-slot stator wire is used as a three-phase 4-pole single-layer winding with a pitch equal to 5. The beginning of the main phase winding is connected to the lead-out line A, the start of the secondary phase winding is connected to the lead-out line B, and the start of the intermediate phase winding is connected to the lead-out Line C, the end of the three-phase winding is connected to N, and the lead line B is connected to the lead line A through the capacitor. When in use, lead-out line A and lead-out line C are connected to a single-phase power supply; the implementation standard is the national industry standard JB / T3758, rated voltage 220V, rated frequency 50Hz, rated output power 120W, rated speed 1350r / m.

[0023] An experimental three-phase motor prototype was fabricated us...

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Abstract

A Y junction single phase capacitor run motor electromagnetism designing method is characterized in that, the designing method comprises the following steps: 1) determining the designing input parameter of the designed motor; 2) manufacturing a three-phase motor model based on the designing input parameter; 3) inputting the three-phase motor model with the three-phase power supply to drive the rated load, measuring the phase end positive sequence resistance Rfm and the reactance Xfm of the motor; 4) using the two-phase winding of the three-phase motor model as the main phase and the assistant phase of the motor to be designed, wherein the effective turns of the middle phase winding to the main phase winding follow the above formula, and the capacitive reactance Xc of the capacitor accords to the following formula: Xc=2Xfm. The designing method omits the complex computation of Rfm and Xfm, and obtains the correct result coherent with the structure technique, to cause the motor to be designed to obtain better performance.

Description

technical field [0001] The invention relates to an electromagnetic design method for a Y-connected single-phase capacitor-operated motor, in particular to an electromagnetic design method for a reversible Y-connected single-phase capacitor-operated motor, which belongs to H02K17 / 08 or H02K3 / 28 in the international patent classification table. Background technique [0002] Single-phase capacitor running motors traditionally use two-phase windings. The prior art proposes the use of three-phase windings, that is, the stator has three-phase windings connected in star or delta and its two input terminals connected to the two poles of the single-phase power supply and through The capacitor is connected to the third input terminal of one pole of the single-phase power supply. Among them, the star connection is the Y-connection single-phase capacitor running motor. The phase band of the three-phase winding is usually π / 3 or π / 6, which is smaller than the phase band of the two-phase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/00H02K17/08H02K3/28
Inventor 区长钊
Owner 江门市洗衣机厂
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