A miniature single-phase permanent magnet synchronous motor
A synchronous motor, single-phase permanent magnet technology, used in synchronous motors with static armatures and rotating magnets, electronic commutation motor control, electrical components, etc., to achieve the effect of increasing the load range and improving the starting torque
Active Publication Date: 2017-09-12
HANYU GRP CO LTD
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Problems solved by technology
This motor is an improvement over previous products, but requires a separate rotor position detection element
Method used
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Embodiment Construction
[0041] The motor of the embodiment of the present invention is improved on the basis of the embodiment described in the applicant's authorized prior application CN201110100111.6.
[0042] The basic structure of the electromagnetism of the embodiment of the present invention is as follows: figure 1 As shown, it inherits from CN201110100111.6 figure 1 The structures shown include:
[0043] ——The stator 1 is mainly composed of a U-shaped iron core 11 and a winding 12; the upper part of the iron core 11 is formed to surround the left and right poles of the rotor 2—the left pole 111 and the right pole 112; the winding 12 is formed by penetrating into the yoke of the iron core 11 The left arm and the right arm each have one coil connected in series or in parallel;
[0044] ——The rotor 2 is a permanent magnet rotor, magnetized by a radially symmetrical sine wave to N and S poles, inserted between the left pole 111 and the right pole 112 of the iron core 11, and supported by a beari...
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The invention relates to a miniature single-phase permanent-magnet synchronous motor. According to a terminal voltage of a stator winding in the zero state of the detected power supply voltage and current, a control circuit drives a switch to control a current of a power supply input winding. To be specific, (a), a rotate is located at a position so as to enable the permanent-magnet axis of the rotor to be ahead of a permanent-magnet axis when a stator winding is electrified by a current at a certain direction by one acute angle; (b), a first current pulse is inputted into the winding from first time delay when the power supply voltage just passes the zero point, wherein the direction of the first current pulse is opposite to the current direction in the step (a); and (c), when an absolute value of the feature value of the terminal voltage is larger than a specified value and a time difference between a first zero-crossing point and a third zero-crossing point of the power supply voltage is less than a specified value, a second current pulse is inputted into the winding, wherein the direction of the second current pulse is opposite to the first current pulse and a time delay exists between the third zero-crossing point of the power supply voltage and the second current pulse; otherwise, the steps from (a) to (c) are repeated; if the absolute value is larger than the specified value and the first zero-crossing point is ahead of the third zero-crossing point of the alternating-current power supply voltage, the first time delay is added; and otherwise, the time delay is shortened. On the basis of the design, usage of a separate rotor position detection element can be avoided.
Description
technical field [0001] The invention relates to a miniature single-phase permanent magnet synchronous motor, in particular to an electronically controlled directional rotation single-phase self-starting permanent magnet synchronous motor. In the international patent classification table, the classification can belong to H02P6 / 18. Background technique [0002] The electronically controlled directional rotation single-phase self-starting permanent magnet synchronous motor can be found in the prior application CN201110100111.6 which has been authorized by the applicant. This motor is an improvement over previous products, but requires a separate rotor position detection element. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a miniature single-phase permanent magnet synchronous motor, which can still have better performance without setting a separate rotor position detection element, thus reducing the cost. [000...
Claims
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IPC IPC(8): H02P6/185H02K21/18
Inventor 区长钊卓春光
Owner HANYU GRP CO LTD