CN105099293A - Inverter pulsator washing machine and control method thereof - Google Patents
Inverter pulsator washing machine and control method thereof Download PDFInfo
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- CN105099293A CN105099293A CN201410182912.5A CN201410182912A CN105099293A CN 105099293 A CN105099293 A CN 105099293A CN 201410182912 A CN201410182912 A CN 201410182912A CN 105099293 A CN105099293 A CN 105099293A
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Abstract
The preset invention provides an inverter pulsator washing machine. The inverter pulsator washing machine comprises a permanent magnet motor of a rotorless position feedback device, a detection unit used for detecting a phase current and a terminal voltage of the permanent magnet motor of the rotorless position feedback device to obtain the rotor position information of the permanent magnet motor, and a control system for controlling the washing machine to start and stop rapidly or controlling the rapid switching of the positive rotation and negative rotation according to the rotor position information of the permanent magnet motor of the rotorless position feedback device obtained by the detection unit. According to the inverter pulsator washing machine of the present invention, by detecting the phase current and the terminal voltage of the permanent magnet motor of the rotorless position feedback device, the rotor position is determined, thereby being able to effectively solve the technical problems of starting and stopping the pulsator washing machine rapidly, and switching the positive rotation and negative rotation rapidly.
Description
Technical field
The present invention relates to technical field of electric appliances, the frequency-changing rotary drum washing machine particularly adopting magneto to carry out driving and control method thereof.
Background technology
In prior art, the variable-frequency washing machine that employing magneto as shown in Figure 4 drives, adopt the control mode having rotor-position feedback information, adopt three Hall element feedback rotor position informations, the control mode cost of this rotor-position feedback information is lower, but its positional information and the every 60 ° of ability of electrical degree feed back a motor rotor position, cannot be provided in and adopt continuous angle information required in Field orientable control process.In other control mode, as encoder feedback mode, although can provide accurate positional information, cost is higher, should not be accepted by market.
Summary of the invention
Object of the present invention is intended to solve one of above-mentioned technical problem at least to a certain extent.
For this reason, one object of the present invention is to provide a kind of frequency-changing rotary drum washing machine, judge rotor-position by the phase current and terminal voltage that detect the magneto of no-rotor position feedback device, can effectively solve rotary drum washing machine rapid starting/stopping, technical barrier that rotating switches fast.
Another object of the present invention is the control method proposing a kind of frequency-changing rotary drum washing machine.
For achieving the above object, an aspect of of the present present invention embodiment proposes a kind of frequency-changing rotary drum washing machine, comprises the magneto of no-rotor position feedback device; Detecting unit, for detecting phase current and the terminal voltage of the magneto of described no-rotor position feedback device, to obtain the rotor position information of magneto; And control system, the rotor position information of the magneto of the described no-rotor position feedback device obtained according to described detecting unit, controls washing machine rapid starting/stopping or rotating switches fast.
In specific embodiments more of the present invention, described detecting unit comprises the rotor-position observer of permanent magnet motor controller further.
In specific embodiments more of the present invention, described detecting unit is also for detecting the DC bus-bar voltage of permanent magnet motor drives.
For achieving the above object, another aspect of the present invention embodiment proposes a kind of control method of frequency-changing rotary drum washing machine, described frequency-changing rotary drum washing machine comprises the magneto of no-rotor position feedback device, described control method comprises phase current and the terminal voltage of the magneto detecting described no-rotor position feedback device, to obtain the rotor position information of the magneto of described no-rotor position feedback device; According to the described rotor position information detecting the magneto of the described no-rotor position feedback device obtained, control frequency-changing rotary drum washing machine rapid starting/stopping or rotating switch fast.
In specific embodiments more of the present invention, described control method also comprises the DC bus-bar voltage detecting permanent magnet motor drives.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention is by phase current sensing, the terminal voltage detecting to the magneto of no-rotor position feedback device, namely in the impeller variable-frequency washing machine of the magneto of existing employing no-rotor position feedback device, the rotor-position feedback device of motor is eliminated as Hall element, improve product quality, reduce costs, improve and manufacture efficiency.
2, the present invention is due to phase current sensing, the terminal voltage detecting of the magneto by no-rotor position feedback device, the continuous angle information needed can be collected in Field orientable control process, ± the Angle ambiguity of 2 ° can be realized, far above the control precision of the Hall element 60 ° that existing magneto adopts, achieve the efficient control of motor, and reach energy-saving and cost-reducing and the control effects of reduction noise.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is frequency-changing rotary drum washing machine control principle block diagram of the present invention;
Fig. 2 is one of the present invention embodiment terminal voltage and direct current bus voltage detecting circuit schematic diagram;
Fig. 3 is one of the present invention embodiment phase current sensing circuit theory diagrams;
Fig. 4 is the rotary drum washing machine control principle block diagram adopting Hall element in prior art.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings the frequency-changing rotary drum washing machine according to the embodiment of the present invention is described in detail.
In an embodiment of the present invention, frequency-changing rotary drum washing machine comprises the magneto of no-rotor position feedback device; Detecting unit, for detecting phase current and the terminal voltage of the magneto of no-rotor position feedback device, to obtain the rotor position information of magneto; And control system, according to the rotor position information of the magneto of the described no-rotor position feedback device of detection system acquisition, control system controls washing machine rapid starting/stopping or rotating switches fast.It should be noted that " magneto of no-rotor position feedback device " here refers in magneto the rotor-position feedback device of having rejected it and having carried, therefore be defined herein as " magneto of no-rotor position feedback device ".
In particular embodiments of the invention, detection system comprises the rotor-position observer of permanent magnet motor controller.
In specific embodiments more of the present invention, detection system is also for detecting the DC bus-bar voltage of permanent magnet motor drives.
In at least some embodiment of the present invention, realize electronics rotor-position by the rotor-position observer of phase current, phase-voltage measurement and electric machine controller to detect, eliminate prior art magneto and carry rotor-position feedback device such as the hardware such as Hall element and carry out rotor-position detection.
It should be noted that, in embodiments of the present invention, the rotor position information of magneto is obtained by the phase current and terminal voltage detecting the magneto of no-rotor position feedback device, such method can collect in Field orientable control process the continuous angle information needed, ± the Angle ambiguity of 2 ° can be realized, and in prior art magneto adopt be Hall element, adopt the control mode of this rotor-position feedback information of Hall element, its positional information and the every 60 ° of ability of electrical degree feed back a motor rotor position.
Simultaneously, the frequency-changing rotary drum washing machine of the embodiment of the present invention is by phase current sensing, the terminal voltage detecting to the magneto of no-rotor position feedback device, reject in prior art frequency-changing rotary drum washing machine magneto and be also provided with motor rotor position feedback device as hardware such as Hall elements, greatly reduce cost and hardware resource consumption, also substantially increase simultaneously and control accurately, achieve the efficient control of motor, reach energy-saving and cost-reducing, cost declining, reduction noise control effects.
Other embodiment of the present invention proposes a kind of control method of frequency-changing rotary drum washing machine.The control method of frequency-changing rotary drum washing machine comprises phase current and the terminal voltage of the magneto detecting no-rotor position feedback device, to obtain the rotor position information of magneto; According to the rotor position information of the magneto of the no-rotor position feedback device of detection acquisition, control frequency-changing rotary drum washing machine rapid starting/stopping or rotating switch fast.
In specific embodiments more of the present invention, control method also comprises the DC bus-bar voltage detecting permanent magnet motor drives.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is one of the present invention specific embodiment terminal voltage and direct current bus voltage detecting circuit schematic diagram; Fig. 3 is one of the present invention embodiment phase current sensing circuit theory diagrams.
Specifically, see Fig. 2, by injecting high-frequency pulse current to the magneto phase line of no-rotor position feedback device, by phase current sensing, find initial position of rotor;
See Fig. 1 and Fig. 2, by detecting phase current in motor operation course, and the continuous detection rotor position of phase voltage;
See Fig. 1, by phase voltage signal realize motor should give with the most appropriate control waveform.Controlling torque is pulsed, and reduces noise;
The dq axle being realized motor by phase current signal controls current decoupled control, d shaft current=0, realizes peak efficiency and controls, realize electrical machine energy-saving.
In more existing motor driving design schemes, also have the method adopting phase current sampling and DC bus-bar voltage to adopt, but these are applied in the operation of long-time one direction more, or the application scenario that the time of motor positive and inverse switching is long.In the present invention, because rotary drum washing machine rotating frequently switches, and the time that rotating switches is very short, turns and stops than the shortest 0.3S that reaches, and only adopts phase current and busbar voltage sample mode to be difficult to meet the feature of rotary drum washing machine rotating high speed switching.With the Main Differences of common phase current and busbar voltage control mode in the present invention, be the detection of the terminal voltage adding each phase line of motor, and terminal voltage is passive mode observation, by different information and the current sample information of voltage-phase, combine and can observe rotor-position comparatively accurately, and under static state can pass through special high-frequency signal injection, accurately locate initial position of rotor.Can the rotor position error of multifrequency time correcting current model in running.
Be understandable that; by measuring these real time information of phase current, terminal voltage and busbar voltage in real time; by motor model algorithm; the special algorithm of temporary stoppage; realize rotor angle overall process to monitor in real time; realize the rotor angle error of positive and negative 2 degree, realize motor positive and inverse and switch at a high speed, low-noise high-efficiency controls.
According to frequency-changing rotary drum washing machine and the control method thereof of the embodiment of the present invention, due to phase current sensing, the terminal voltage detecting of the magneto by no-rotor position feedback device, the continuous angle information needed can be collected in Field orientable control process, ± the Angle ambiguity of 2 ° can be realized, far above the control precision of the Hall element 60 ° adopting in existing magneto or carry, achieve the efficient control of motor, and reach energy-saving and cost-reducing and the control effects of reduction noise; And eliminate motor rotor position feedback device as hardware such as Hall elements at existing impeller variable-frequency washing machine, improve product quality, reduce costs, improve and manufacture efficiency.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (5)
1. a frequency-changing rotary drum washing machine, is characterized in that, comprising:
The magneto of no-rotor position feedback device;
Detecting unit, for detecting phase current and the terminal voltage of the magneto of described no-rotor position feedback device, to obtain the rotor position information of described magneto;
Control system, the rotor position information of the magneto of the described no-rotor position feedback device obtained according to described detecting unit, controls washing machine rapid starting/stopping or rotating switches fast.
2. frequency-changing rotary drum washing machine as claimed in claim 1, it is characterized in that, described detecting unit comprises the rotor-position observer of permanent magnet motor controller further.
3. frequency-changing rotary drum washing machine as claimed in claim 1, it is characterized in that, described detecting unit is also for detecting the DC bus-bar voltage of permanent magnet motor drives.
4. be applied to a control method for the frequency-changing rotary drum washing machine of claim 1, described frequency-changing rotary drum washing machine comprises the magneto of no-rotor position feedback device, it is characterized in that, described control method comprises:
Detect phase current and the terminal voltage of the magneto of described no-rotor position feedback device, to obtain the rotor position information of the magneto of described no-rotor position feedback device;
According to the described rotor position information detecting the magneto of the described no-rotor position feedback device obtained, control frequency-changing rotary drum washing machine rapid starting/stopping or rotating switch fast.
5. the control method of frequency-changing rotary drum washing machine as claimed in claim 4, is characterized in that, described control method also comprises the DC bus-bar voltage detecting permanent magnet motor drives.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182912.5A CN105099293A (en) | 2014-04-30 | 2014-04-30 | Inverter pulsator washing machine and control method thereof |
| PCT/CN2015/077124 WO2015165349A1 (en) | 2014-04-30 | 2015-04-21 | Variable frequency impeller washing machine and controlling method therefor |
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| CN201410182912.5A CN105099293A (en) | 2014-04-30 | 2014-04-30 | Inverter pulsator washing machine and control method thereof |
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