Oriented running alternating-current permanent-magnet synchronous water pump and orientation control method
A permanent magnet synchronous and directional control technology, applied in pump control, pumps, pump devices, etc., can solve the problem of AC permanent magnet synchronous motors being unable to run directional, and achieve the effect of improving efficiency
Inactive Publication Date: 2013-01-02
深圳市钜泰泵业有限公司
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide an AC permanent magnet synchronous water pump with directional operation and a directional control method for the above-mentioned problem that the AC permanent magnet synchronous motor cannot operate in a directional manner
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[0026] Below in conjunction with accompanying drawing, the present invention is described in detail:
[0027] Such as figure 1 As shown, it is a schematic diagram of an embodiment of the directional running AC permanent magnet synchronous water pump of the present invention. In this embodiment, the water pump includes a pump body 1, a stator 2, a stator coil winding 3, a permanent magnet rotor 6, an impeller 7, a water inlet 9, a water outlet 10, an impeller chamber 8, a Hall element 5, a circuit board 4, etc. , wherein the impeller chamber 8 is connected to the pump body 1, the stator 2, the stator coil winding 3 and the permanent magnet rotor 6 are installed in the stator accommodating chamber and the rotor accommodating chamber in the pump body 1, and the impeller 7 is located in the impeller chamber 8 and fixed on At the end of the permanent magnet rotor 6 , a control unit for controlling the rotation of the permanent magnet rotor 6 is arranged on the circuit board 4 .
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The invention relates to an oriented running alternating-current permanent-magnet synchronous water pump which comprises a control unit. The control unit comprises a first detecting unit, a second detecting unit, a main control unit and a motor driving unit. The first detecting unit is used for generating magnetic field polarity position signals of a permanent-magnet rotor, and the second detecting unit is used for generating zero-crossing signals of an alternating-current power supply. Besides, the main control unit comprises a starting subunit, a judging subunit and an interrupting subunit, the starting subunit is used for realizing power-on of the motor driving unit, the judging subunit is used for judging a rotation direction of the permanent-magnet rotor by comparing waveform of the detecting signals of the first detecting unit to waveform of the detecting signals of the second detecting unit, and the interrupting subunit is used for interrupting the motor driving unit when the rotation direction of the permanent-magnet rotor is opposite to a set rotation direction. The invention further discloses an orientation control method of the alternating-current permanent-magnet synchronous water pump. By processing the difference between the change signals of a surrounding magnetic field and the zero-crossing signal of the alternating-current power supply during forward rotation and reverse rotation of the permanent-magnet rotor, open and close of a driving circuit are controlled, and oriented running of the motor is achieved.
Description
technical field [0001] The invention relates to a water pump driven by a single-phase AC two-pole permanent magnet synchronous motor, and more specifically relates to an AC permanent magnet synchronous water pump with directional operation and a directional control method. Background technique [0002] The driving part of the existing AC synchronous water pump consists of a coil winding, a U-shaped iron core, and a permanent magnet rotor with an impeller. When the coil winding wound on the U-shaped iron core is supplied with alternating current, the two ends of the U-shaped iron core generate a magnetic field with opposite polarity, which interacts with the magnetic field of the permanent magnet rotor, thereby driving the permanent magnet rotor to rotate. Since the direction of the alternating current changes continuously according to a certain frequency, the direction of the magnetic field at both ends of the U-shaped iron core also changes continuously, thereby driving the...
Claims
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Inventor 敬策
Owner 深圳市钜泰泵业有限公司