Control method and device of frequency conversion motor in washing machine and washing machine
A frequency conversion motor and control device technology, applied in the field of washing machines, can solve problems such as complex control, displacement, and entanglement of clothes, and achieve the effect of improving the washing effect
Active Publication Date: 2020-11-13
WUXI FILIN ELECTRONICS CO LTD
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Problems solved by technology
[0003] However, compared with the traditional washing machine with series excitation motor (single-phase series excitation motor), its control is more complicated, especially the fully automatic pulsator washing machine. Clothes are entangled, and in severe cases, the clothes are damaged, and the entanglement of clothes also has an adverse effect on high-speed dehydration. In severe cases, it will cause problems such as bumping into the bucket and shifting
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[0035] 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 and are intended to explain the present invention and should not be construed as limiting the present invention.
[0036] The method for controlling the frequency conversion motor in the washing machine, the control device for the frequency conversion motor in the washing machine and the washing machine with the control device according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0037] figure 1It is a flow chart of a method for controlling a variable frequency motor in a washing machine according to an embodiment of the present invention. Such as figure 1 As shown, the ...
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The invention discloses a method and a device for controlling a variable-frequency motor in a washing machine and a washing machine. The method comprises the following steps: acquiring the three-phasecurrent and the DC bus voltage of the variable-frequency motor; acquiring the rotor position of the variable-frequency motor; carrying out coordinate transformation on the three-phase current according to the rotor position to obtain a d-axis current and a q-axis current; estimating the load condition of the variable-frequency motor according to the three-phase current and the DC bus voltage to obtain a given q-axis current; and carrying out PI adjustment according to the given q-axis current and the q-axis current to obtain a q-axis voltage, and controlling the variable-frequency motor according to the q-axis voltage. The variable-frequency motor is controlled according to the load condition, so that the tangling problem under the condition of many clothes is prevented or weakened, and the washing effect under the condition of fewer clothes is improved.
Description
technical field [0001] The invention relates to the technical field of washing machines, in particular to a control method for a frequency conversion motor in a washing machine, a control device for a frequency conversion motor in a washing machine, and a washing machine with the control device. Background technique [0002] Inverter washing machines account for an increasing proportion of the market due to their advantages of high efficiency and energy saving, adjustable speed, high dynamic effect and low vibration and noise. [0003] However, compared with the traditional washing machine with series excitation motor (single-phase series excitation motor), its control is more complicated, especially the fully automatic pulsator washing machine. Clothes will be entangled, and in serious cases, clothes will be damaged, and the entanglement of clothes will also have an adverse effect on high-speed dehydration, and in severe cases, it will cause problems such as barrel collisio...
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IPC IPC(8): H02P21/00H02P27/08
CPCH02P21/0003
Inventor 吴强张晓波林涛戴超张凤宇王娜娜
Owner WUXI FILIN ELECTRONICS CO LTD