Compressor and motor
A technology of back electromotive force and electric control system, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit static parts, magnetic circuit rotating parts, etc., can solve the problem of motor efficiency reduction and achieve the effect of improving motor efficiency
Active Publication Date: 2017-03-15
GUANGDONG MEIZHI COMPRESSOR
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Problems solved by technology
[0003] In the current field of home appliances, in order to reduce costs, when using an electronic control system without electrolytic capacitors to drive the motor, it is often necessary to sacrifice the efficiency of the motor, resulting in a reduction in the efficiency of the motor
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[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0026] In describing the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" etc. is based on the orientation or position shown in the drawings The positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or...
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The invention discloses a compressor and a motor. The motor comprises a stator and a rotor, wherein the stator comprises a stator core and a stator winding, the stator core comprises multiple stator iron boards which are laminated, the stator core comprises multiple stator teeth and multiple stator grooves, the multiple stator teeth and the multiple stator grooves are distributed circumferentially with intervals, the stator winding is wound on the stator core, the rotor comprises a rotor core and multiple rotor magnet members arranged on the rotor core, the rotor core comprises multiple rotor iron boards which are laminated, the multiple rotor magnet members are distributed in a circumferential direction of the rotor core with intervals, a ratio of a counterelectromotive force coefficient Ke of the motor to a largest DC bus voltage value Udcmax of an electric control system satsifies that Ke / Udcmax is not greater than 0.2 and is not smaller than 0.05. According to the motor, through reasonably designing the counterelectromotive force coefficient of the motor, the counterelectromotive force coefficient of the motor is matched with the DC bus voltage, and thereby efficiency of a non-electrolytic capacitance motor is greatly improved.
Description
technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a compressor and a motor thereof. Background technique [0002] Brushless motors with permanent magnets embedded in the rotor are widely used in home appliances such as air-conditioning compressors because of their high efficiency. However, under the premise of the current manufacturing process, it is difficult to further improve the efficiency of the motor. Especially when the electronic control system cancels the large electrolytic capacitor in the main circuit of the circuit system and replaces it with a small film capacitor in order to reduce the cost, the DC bus voltage waveform output by the electronic control system is in the shape of a steamed bun wave instead of a conventional straight line shape, which has obvious constraints on the performance of the motor. [0003] In the current field of home appliances, in order to reduce costs, when using an electroni...
Claims
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IPC IPC(8): H02K1/12H02K1/27
Inventor 邱小华廖健生
Owner GUANGDONG MEIZHI COMPRESSOR