CN101826836B - Electric signal-based household appliance single-rotor compressor variable frequency controller and implementation method thereof - Google Patents

Electric signal-based household appliance single-rotor compressor variable frequency controller and implementation method thereof Download PDF

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CN101826836B
CN101826836B CN2010101887442A CN201010188744A CN101826836B CN 101826836 B CN101826836 B CN 101826836B CN 2010101887442 A CN2010101887442 A CN 2010101887442A CN 201010188744 A CN201010188744 A CN 201010188744A CN 101826836 B CN101826836 B CN 101826836B
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CN101826836A (en
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刘学鹏
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Zhongshan Polytechnic
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Abstract

The invention discloses an electric signal-based household appliance single-rotor compressor variable frequency controller and an implementation method thereof. The controller comprises a single-resistor detection circuit, a filter and amplifier circuit, a fault clearance and software filter module, a three-to-two-phase system conversion module, a rotor position determination module, a two-to-three-phase conversion module and a three-phase conduction time fanlike module, wherein the rotor position determination module comprises a parameter input module, a low pass filter module, a current pre-estimation module and a rotor position pre-estimation module. The implementation method comprises the following steps of: (a) detecting the three-phase current of the single-rotor compressor; (b) amplifying an acquired signal and judging the abnormity; (c) converting three-phase voltage into two-phase voltage; (d) pre-estimating the rotor position of the compressor; and (e) controlling the rotor of the compressor to rotate. The controller and the method have the advantages of rapid stabilization of the working condition, stable load, low energy consumption, small noise and the like.

Description

A kind of household appliance single-rotor compressor frequency-variable controller and implementation method based on the signal of telecommunication
[technical field]
The present invention relates to a kind of household appliance single-rotor compressor frequency-variable controller and implementation method, specifically be applied in the frequency control and the control of single-rotor compressor in air-conditioning, refrigerator, the washing machine based on the signal of telecommunication.
[background technology]
Converter technique can turn round with only power output according to different worker's shapes.Traditional invariable frequency compressor then can only take constantly " open and close " measure to carry out phase step type control, not only cause controlled object to fluctuate up and down easily, and power consumption is many.VFC is to utilize the compressor operation frequency change to reach the control purpose, and it is little therefore to fluctuate, and comfort level improves greatly, and power consumption is also less.Particularly convertible frequency air-conditioner is compared with general traditional constant speed air-conditioning, and high performance operation, comfortable quiet, energy-conserving and environment-protective, distinguishing feature that energy consumption is low are arranged, and meets the requirement of refrigeration domestic electric appliances energy-savingization, environmental protectionization, also is the developing direction of air-conditioning.
Current national macro policy is in the accent structure, short stage transition.The energy-conserving and environment-protective field has become one in China " rising industry "; National Ministry of Finance, the Committee of Development and Reform announce " energy-conserving product civilian-oriented project "; Take the financial subsidies mode, energy-efficient product promotion such as the air-conditioning of efficiency grade more than 1 grade or 2 grades, refrigerator, motor is used.Therefore, the frequency-changeable compressor control technology has reality and urgent practical significance for the enterprise transformation and the updating and upgrading of a product.
The control of single rotor home appliance compressor is a difficult point of household electric appliances; Although certain research basis and product are arranged both at home and abroad; But from the industry angle with facts have proved; This development of technology itself also can not be satisfied demand of practical production far away, does not form a comparison system as yet and the system used.Therefore, carry out the research content that research of household appliance single-rotor compressor VFC and industrialization technology are still current household electric appliances development.
The core of VFC is to ensure that feedback signal is derived accurate rotor-position relation factor under the low-and high-frequency.Compressor can be similar to and regard a kind of permagnetic synchronous motor (PMSM) as from the Driving technique angle.Under the low frequency; Synchronous machine electric current and voltage variety are little, have estimated a lot of scholars both domestic and external and the engineer studies based on the motor position of tiny signal, propose modern means such as neural net, wavelet analysis; Obtained certain achievement; It is huge that but these technology have amount of calculation, and the calculating means are complicated, are difficult to produce the shortcoming of practical application.
In addition, existing frequency converter has the load instability, the shortcoming that noise is big, power consumption is big in the process of frequency conversion fast.
[summary of the invention]
The present invention has overcome the deficiency of above-mentioned technology, and a kind of steady working condition rapidly, steady load, power consumption is low, noise is little household appliance single-rotor compressor frequency-variable controller and implementation method based on the signal of telecommunication are provided.
For realizing above-mentioned purpose, the present invention has adopted following technical proposal:
A kind of household appliance single-rotor compressor frequency-variable controller based on the signal of telecommunication includes the single resistance detecting circuit that connects in order, filters amplifying circuit; Fault is got rid of and the software filtering module, and three-phase is to two phase system conversion modules, rotor-position determination module; Two-phase is to three-phase conversion module, three-phase fanlike die block conduction time, SPM; Said single resistance detecting circuit is connected with zero line on the SPM, and said SPM is connected with the input of single-rotor compressor;
Said rotor-position determination module is estimated along with frequency change is optimized the compressor drum position, and said rotor-position determination module includes
Parameter input module, that introduces discrete voltage and current signal from three-phase to two phase system conversion modules;
Low-pass filtering module, the signal that parameter input module is exported carries out Filtering Processing;
Electric current is estimated module, and the biphase current signal according to low-pass filtering module output draws electric current and estimates equation:
i γ ( n ) i δ ( n ) = 1 - R L d T θ · M L q L d T - θ · M L d L q T 1 - R L q T i γ ( n - 1 ) i δ ( n - 1 ) - e M 0 1 / L q , Wherein, i γ(n) estimate current value, i for what estimate γ axle under coordinate system γ-δ δ(n) estimate current value, i for what estimate δ axle under coordinate system γ-δ γ(n-1) for estimating the current current value of γ axle under coordinate system γ-δ, i δ(n-1) for estimating the current current value of δ axle under coordinate system γ-δ, R is a motor resistance, and T is the sampling period,
Figure GSB00000601622000032
Be current rotor velocity, e MBe current revolving electro-motive force, L dFor with d axle inductance value under the moving coordinate system d-q, L qFor with q axle inductance value under the moving coordinate system d-q;
Rotor-position is estimated module, estimates electric current in the module according to electric current and estimates equation inference and go out rotor position angle and estimate equation:
Figure GSB00000601622000033
Wherein, e M(n) for estimating revolving electro-motive force, e M(n-1) be current revolving electro-motive force, Δ i γ(n) estimate electric current changing value, Δ i for what estimate γ axle under coordinate system γ-δ δ(n) estimate electric current changing value, θ for what estimate δ axle under coordinate system γ-δ M(n) be the rotor position angle of estimating under γ-δ reference axis,
Figure GSB00000601622000034
For estimating the current rotor velocity under coordinate system γ-δ, K e, K MBe adjustable parameter;
Obtain the above-mentioned rotor position angle of estimating, thereby realize estimating of next time period compressor drum position.
Said rotor-position is estimated module the full frequency band that motor rotates is divided into a plurality of frequency bands, in each frequency range, and said adjustable parameter K e, K MA corresponding class value is all arranged, realize the full frequency band parameter regulation.
Said household appliance single-rotor compressor frequency-variable controller also includes
Host computer or system requirements frequency values setting module can be set the motor rotation frequency of single-rotor compressor as requested through this module;
And in be set with the breakdown torque and the power model of frequency threshold, the rotor-position that is connected the rotor-position determination module is estimated module and two-phase between the three-phase conversion module, is connected with host computer or system requirements frequency values setting module simultaneously;
The rotational frequency of setting when host computer or system requirements frequency values setting module is during less than this frequency threshold, and breakdown torque is exported the motor that breakdown torque is controlled single-rotor compressor with power model; The rotational frequency of setting when host computer or system requirements frequency values setting module is during greater than this frequency threshold, and breakdown torque is exported the motor that peak frequency is controlled single-rotor compressor with power model.
The implementation method of said household appliance single-rotor compressor frequency-variable controller, it comprises the steps:
(a) three-phase current of detection single-rotor compressor: according to the single-phase voltage power-up sequence and the time interval are set, gather the U, V, the W three-phase current that obtain the single-rotor compressor motor for 3 times through single resistance detecting circuit;
(b) acquired signal is amplified and judge unusually: through filtering amplifying circuit the three-phase current of gathering is amplified, get rid of with the software filtering module utilizes the electric current that forms after the three phase sources symmetry and be zeroly to confirm whether compressor exists the phase shortage abnormal conditions through fault;
(c) three-phase voltage is to the two-phase voltage transitions: to two phase system conversion modules fault is got rid of the three-phase discrete voltage conversion of signals of exporting with the software filtering module through three-phase and become two-phase discrete voltage signal; Compose then and give the rotor-position determination module, carry out next one time period compressor drum position and estimate;
(d) estimate the compressor drum position: that introduces discrete voltage and current signal from three-phase to two phase system conversion modules through the parameter input module in the rotor-position determination module; The signal of parameter input module being introduced through said low-pass filtering module carries out Filtering Processing; Estimating module through electric current draws said electric current and estimates equation; Estimate module through said rotor-position then and estimate equation inference according to electric current and go out rotor position angle and estimate equation, thereby realize estimating of next time period compressor drum position;
(e) the control compressor drum rotates: the biphase current of to the three-phase conversion module electric current being estimated in the equation through said two-phase becomes three-phase, controls the motor of single-rotor compressor and rotates through the rotor position angle of estimating that three-phase fanlike die block conduction time and SPM are estimated in the equation according to rotor position angle.
The invention has the beneficial effects as follows:
1, the present invention proposes the household appliance single-rotor compressor control technology based on the signal of telecommunication; Avoided loaded down with trivial details calculating and theoretical derivation; From actual project angle,, introduce full frequency band variable element technology and electric current and voltage and change linear model in conjunction with the lofty property of household electrical appliances operating mode variation characteristics; The accurate feedback of signal link of compressor and the accurate conversion process technology of command signal have been carried out; Can realize the instruction of man-machine interface or host computer well, reach rapid steady working condition, satisfy energy-conservation of consumption reduction and low noise characteristic.
2, the present invention integrate single-phase heterogeneous converter technique, compressor position detection model and location determination technology, based on full frequency band debugging technique, intelligent power Driving technique, set up a whole set of frequency conversion system, for the household electrical appliances frequency conversion provides technical basis.
3, of the present invention is the compressor location model of setting up based on feedback current and voltage signal; And in household electrical appliances running frequency scope, model parameter and variable are revised optimization; Can realize that single-rotor compressor lacks vibration-variable frequency requirement, the load of simultaneously real-time matching system fast.Carry out communication with host computer or man-machine interface on this basis and cooperate, can just can realize maximum energy-saving operation under household electrical appliances different mode or the different operating mode by user's simple operations.
[description of drawings]
Be described in further detail below in conjunction with accompanying drawing and execution mode of the present invention:
Fig. 1 is the block diagram of controller of the present invention;
Fig. 2 is the block diagram of the rotor-position determination module of controller of the present invention.
[embodiment]
Referring to Fig. 1, Fig. 2, the present invention introduces a kind of household appliance single-rotor compressor frequency-variable controller based on the signal of telecommunication, includes the single resistance detecting circuit that connects in order; Filter amplifying circuit, fault is got rid of and the software filtering module, and three-phase is to two phase system conversion modules; The rotor-position determination module; Two-phase is to three-phase conversion module, three-phase fanlike die block conduction time, SPM; Said single resistance detecting circuit is connected with power model zero line on the SPM, and said SPM is connected with the input of single-rotor compressor;
Said rotor-position determination module is estimated along with frequency change is optimized the compressor drum position, and said rotor-position determination module includes parameter input module, low-pass filtering module, electric current and estimates module.
That introduces discrete voltage and current signal to parameter input module from three-phase to two phase system conversion modules;
Low-pass filtering module carries out Filtering Processing to the signal of parameter input module output;
Electric current is estimated the biphase current signal of module according to low-pass filtering module output, draws electric current and estimates equation:
i γ ( n ) i δ ( n ) = 1 - R L d T θ · M L q L d T - θ · M L d L q T 1 - R L q T i γ ( n - 1 ) i δ ( n - 1 ) - e M 0 1 / L q , Wherein, i γ(n) estimate current value, i for what estimate γ axle under coordinate system γ-δ δ(n) estimate current value, i for what estimate δ axle under coordinate system γ-δ γ(n-1) for estimating the current current value of γ axle under coordinate system γ-δ, i δ(n-1) for estimating the current current value of δ axle under coordinate system γ-δ, R is a motor resistance, and T is the sampling period,
Figure GSB00000601622000072
Be current rotor velocity, e MBe current revolving electro-motive force, L dFor with d axle inductance value under the moving coordinate system d-q, L qFor with q axle inductance value under the moving coordinate system d-q;
Rotor-position is estimated module and is estimated electric current in the module according to electric current and estimate equation inference and go out rotor position angle and estimate equation:
Wherein, e M(n) for estimating revolving electro-motive force, e M(n-1) be current revolving electro-motive force, Δ i γ(n) estimate electric current changing value, Δ i for what estimate γ axle under coordinate system γ-δ δ(n) estimate electric current changing value, θ for what estimate δ axle under coordinate system γ-δ M(n) be the rotor position angle of estimating under γ-δ reference axis,
Figure GSB00000601622000081
For estimating the current rotor velocity under coordinate system γ-δ, K e, K MBe adjustable parameter;
Obtain the above-mentioned rotor position angle of estimating, thereby realize estimating of next time period compressor drum position.
Said rotor-position is estimated module the full frequency band that motor rotates is divided into a plurality of frequency bands, in each frequency range, and said adjustable parameter K e, K MA corresponding class value is all arranged, realize the full frequency band parameter regulation.
For, can set the rotational frequency of motor as requested, said household appliance single-rotor compressor frequency-variable controller also includes host computer or system requirements frequency values setting module and breakdown torque and power model;
Host computer or system requirements frequency values setting module can be set the motor rotation frequency of single-rotor compressor as requested through this module;
Be set with frequency threshold in breakdown torque and the power model, its rotor-position that is connected the rotor-position determination module estimates module and two-phase is arrived between the three-phase conversion module, is connected with host computer or system requirements frequency values setting module simultaneously;
Torque capacity and power model are selected output based on the frequency of host computer or the input of system requirements frequency values setting module; The rotational frequency of setting when host computer or system requirements frequency values setting module is during less than this frequency threshold, and torque capacity is exported the motor that torque capacity is controlled single-rotor compressor with power model; The rotational frequency of setting when host computer or system requirements frequency values setting module is during greater than this frequency threshold, and torque capacity is exported the motor that peak frequency is controlled single-rotor compressor with power model.
In order to protect single-rotor compressor; Between the power model live wire of fault eliminating and software filtering module and SPM, also be provided with filtering circuit; Filtering circuit will be monitored from the busbar voltage of the live wire pin collection of SPM; Avoid occurring overvoltage and undervoltage condition, filtering circuit adopts digital low-pass filtering.
The present invention has also introduced the implementation method of said household appliance single-rotor compressor frequency-variable controller, and it comprises the steps:
(a) detect the three-phase current of single-rotor compressor: through single resistance detecting circuit based on the single-phase voltage power-up sequence and the time interval are set; Gather 3 times from the leading foot of the power model zero line of intelligent power driver module, obtain U, V, the W three-phase alternating current of single-rotor compressor motor;
(b) acquired signal is amplified and judges unusually: through filtering amplifying circuit the three-phase alternating current of gathering is carried out analog-to-digital conversion, and carry out filtering with send out big; Then; Fault is got rid of with the software filtering module utilizes the electric current that forms after the three phase sources symmetry and be whether zero the further definite compressor of principle exists the phase shortage abnormal conditions; Then according to the fan-shaped interval graph of vector (specifically seeing the associated motor reference book); Confirm current sector number sector, the every phase voltage power-up sequence and the time interval are set then.
(c) three-phase voltage is to the two-phase voltage transitions: to two phase system conversion modules fault is got rid of the three-phase discrete voltage conversion of signals of exporting with the software filtering module through three-phase and become two-phase discrete voltage signal; Compose then and give the rotor-position determination module, carry out next one time period compressor drum position and estimate;
(d) estimate the compressor drum position: that introduces discrete voltage and current signal from three-phase to two phase system conversion modules through the parameter input module in the rotor-position determination module; The signal of parameter input module being introduced through said low-pass filtering module carries out Filtering Processing; Estimating module through electric current draws said electric current and estimates equation; Estimate module through said rotor-position then and estimate equation inference according to electric current and go out rotor position angle and estimate equation, thereby realize estimating of next time period compressor drum position;
The relation of deriving that is based on the modelling of no sensor electrical signal location is estimated in the single-rotor compressor position.In the present invention, propose the notion of signal of telecommunication difference linear equation, can under general IC resources of chip, realize transportation as much as possible fast.Concrete grammar: the rotor compressor signal is divided into current n state and previous moment n-1 state; Coordinate system comprises three; Be respectively original U, V, W three-phase voltage coordinate system, two-phase is estimated preceding coordinate system γ, δ with moving coordinate system d, q; Feedback voltage and current value also have the constant of compressor and treatment system simultaneously as input variable.Electric current and voltage and servo-actuated Coordinate Conversion equation see that general motor drags document under the three-phase voltage coordinate system.
Carry out mathematics discrete derive with moving axes by general electric equation in two-phase under current state and the previous moment state and draw, concrete electric current is estimated equation and is:
i γ ( n ) i δ ( n ) = 1 - R L d T θ · M L q L d T - θ · M L d L q T 1 - R L q T i γ ( n - 1 ) i δ ( n - 1 ) - e M 0 1 / L q , Wherein, i γ(n) estimate current value, i for what estimate γ axle under coordinate system γ-δ δ(n) estimate current value, i for what estimate δ axle under coordinate system γ-δ γ(n-1) for estimating the current current value of γ axle under coordinate system γ-δ, i δ(n-1) for estimating the current current value of δ axle under coordinate system γ-δ, R is a motor resistance, and T is the sampling period,
Figure GSB00000601622000102
Be current rotor velocity, e MBe current revolving electro-motive force, L dFor with d axle inductance value under the moving coordinate system d-q, L qFor with q axle inductance value under the moving coordinate system d-q;
The positioning equation of rotor position angle is to adopt the difference of voltage and current to carry out the linear programming derivation, and rotor position angle is estimated equation and is:
Wherein, e M(n) for estimating revolving electro-motive force, e M(n-1) be current revolving electro-motive force, Δ i γ(n) estimate electric current changing value, Δ i for what estimate γ axle under coordinate system γ-δ δ(n) estimate electric current changing value, θ for what estimate δ axle under coordinate system γ-δ M(n) be the rotor position angle of estimating under γ-δ reference axis,
Figure GSB00000601622000112
For estimating the current rotor velocity under coordinate system γ-δ, K e, K MBe adjustable parameter;
(e) the control compressor drum rotates: the biphase current of to the three-phase conversion module electric current being estimated in the equation through said two-phase becomes three-phase, controls the motor of single-rotor compressor and rotates through the rotor position angle of estimating that three-phase fanlike die block conduction time and SPM are estimated in the equation according to rotor position angle.
Parameter regulation technology based on full frequency band; Said rotor-position is estimated full frequency band that module rotates motor and is divided into the individual frequency band of N (N for greater than 2 natural number); To get N+1 Frequency point from small to large; The selection of Frequency point is generally according to the calculating figure place of master chip and limiting frequency and decide, and peak frequency is f Max, minimum frequency is f Min, the calculating figure place is n Bit, then Frequency point is: f N=N* (f Max-f Min)/n BitIn each frequency range, said rotor position angle is estimated two adjustable parameter K in the equation e, K MA corresponding class value is all arranged,, at non-Frequency point, generally take the linear difference method to carry out parameter testing, thereby realize the full frequency band parameter regulation.
It is selected between steps d and step e, also to carry out step f control model: the motor rotation frequency of setting single-rotor compressor through host computer or system requirements frequency values setting module as requested; Carry out judgment processing through interior breakdown torque and the power model that is set with frequency threshold then; The rotational frequency of setting when host computer or system requirements frequency values setting module is during less than this frequency threshold, and breakdown torque is exported the motor that breakdown torque is controlled single-rotor compressor with power model; The rotational frequency of setting when host computer or system requirements frequency values setting module is during greater than this frequency threshold, and breakdown torque is exported the motor that peak frequency is controlled single-rotor compressor with power model.

Claims (6)

1. the household appliance single-rotor compressor frequency-variable controller based on the signal of telecommunication includes the single resistance detecting circuit that connects in order, filters amplifying circuit; Fault is got rid of and the software filtering module, and three-phase is to two phase system conversion modules, rotor-position determination module; Two-phase is to three-phase conversion module, three-phase fanlike die block conduction time, SPM; Said single resistance detecting circuit is connected with zero line on the SPM, and said SPM is connected with the input of single-rotor compressor; It is characterized in that,
Said rotor-position determination module is estimated along with frequency change is optimized the compressor drum position, and said rotor-position determination module includes
Parameter input module, that introduces discrete voltage and current signal from three-phase to two phase system conversion modules;
Low-pass filtering module, the signal that parameter input module is exported carries out Filtering Processing;
Electric current is estimated module, and the biphase current signal according to low-pass filtering module output draws electric current and estimates equation:
i γ ( n ) i δ ( n ) = 1 - R L d T θ · M L q L d T - θ · M L d L q T 1 - R L q T i γ ( n - 1 ) i δ ( n - 1 ) - e M 0 1 / L q , Wherein, i γ(n) estimate current value, i for what estimate γ axle under coordinate system γ-δ δ(n) estimate current value, i for what estimate δ axle under coordinate system γ-δ γ(n-1) for estimating the current current value of γ axle under coordinate system γ-δ, i δ(n-1) for estimating the current current value of δ axle under coordinate system γ-δ, R is a motor resistance, and T is the sampling period,
Figure FSB00000601621900012
Be current rotor velocity, e MBe current revolving electro-motive force, L dFor with d axle inductance value under the moving coordinate system d-q, L qFor with q axle inductance value under the moving coordinate system d-q;
Rotor-position is estimated module, estimates electric current in the module according to electric current and estimates equation inference and go out rotor position angle and estimate equation:
Figure FSB00000601621900021
Wherein, e M(n) for estimating revolving electro-motive force, e M(n-1) be current revolving electro-motive force, Δ i γ(n) estimate electric current changing value, Δ i for what estimate γ axle under coordinate system γ-δ δ(n) estimate electric current changing value, θ for what estimate δ axle under coordinate system γ-δ M(n) be the rotor position angle of estimating under γ-δ reference axis, For estimating the current rotor velocity under coordinate system γ-δ, K e, K MBe adjustable parameter;
Obtain the above-mentioned rotor position angle of estimating, thereby realize estimating of next time period compressor drum position.
2. a kind of household appliance single-rotor compressor frequency-variable controller based on the signal of telecommunication according to claim 1 is characterized in that, said rotor-position is estimated module the full frequency band that motor rotates is divided into a plurality of frequency bands, in each frequency range, and said adjustable parameter K e, K MA corresponding class value is all arranged, realize the full frequency band parameter regulation.
3. a kind of household appliance single-rotor compressor frequency-variable controller based on the signal of telecommunication according to claim 1 and 2 is characterized in that, also includes
Host computer or system requirements frequency values setting module can be set the motor rotation frequency of single-rotor compressor as requested through this module;
And in be set with the breakdown torque and the power model of frequency threshold, the rotor-position that is connected the rotor-position determination module is estimated module and two-phase between the three-phase conversion module, is connected with host computer or system requirements frequency values setting module simultaneously:
The rotational frequency of setting when host computer or system requirements frequency values setting module is during less than this frequency threshold, and breakdown torque is exported the motor that breakdown torque is controlled single-rotor compressor with power model; The rotational frequency of setting when host computer or system requirements frequency values setting module is during greater than this frequency threshold, and breakdown torque is exported the motor that peak frequency is controlled single-rotor compressor with power model.
4. according to the implementation method of the said household appliance single-rotor compressor frequency-variable controller of claim 1, it is characterized in that comprising the steps:
(a) three-phase current of detection single-rotor compressor: according to the single-phase voltage power-up sequence and the time interval are set, gather the U, V, the W three-phase current that obtain the single-rotor compressor motor for 3 times through single resistance detecting circuit;
(b) acquired signal is amplified and judge unusually: through filtering amplifying circuit the three-phase current of gathering is amplified, get rid of with the software filtering module utilizes the electric current that forms after the three phase sources symmetry and be zeroly to confirm whether compressor exists the phase shortage abnormal conditions through fault;
(c) three-phase voltage is to the two-phase voltage transitions: to two phase system conversion modules fault is got rid of the three-phase discrete voltage conversion of signals of exporting with the software filtering module through three-phase and become two-phase discrete voltage signal; Compose then and give the rotor-position determination module, carry out next one time period compressor drum position and estimate;
(d) estimate the compressor drum position: that introduces discrete voltage and current signal from three-phase to two phase system conversion modules through the parameter input module in the rotor-position determination module; The signal of parameter input module being introduced through said low-pass filtering module carries out Filtering Processing; Estimating module through electric current draws said electric current and estimates equation; Estimate module through said rotor-position then and estimate equation inference according to electric current and go out rotor position angle and estimate equation, thereby realize estimating of next time period compressor drum position;
(e) the control compressor drum rotates: the biphase current of to the three-phase conversion module electric current being estimated in the equation through said two-phase becomes three-phase, controls the motor of single-rotor compressor and rotates through the rotor position angle of estimating that three-phase fanlike die block conduction time and SPM are estimated in the equation according to rotor position angle.
5. implementation method according to claim 4 is characterized in that, said rotor-position is estimated module the full frequency band that motor rotates is divided into a plurality of frequency bands, and in each frequency range, said rotor position angle is estimated two adjustable parameter K in the equation e, K MA corresponding class value is all arranged, realize the full frequency band parameter regulation.
6. implementation method according to claim 4; It is characterized in that; It is selected between step (d) and step (e), also to carry out step (f) control model: the motor rotation frequency of setting single-rotor compressor through host computer or system requirements frequency values setting module as requested; Carry out judgment processing through interior breakdown torque and the power model that is set with frequency threshold then; The rotational frequency of setting when host computer or system requirements frequency values setting module is during less than this frequency threshold, and breakdown torque is exported the motor that breakdown torque is controlled single-rotor compressor with power model; The rotational frequency of setting when host computer or system requirements frequency values setting module is during greater than this frequency threshold, and breakdown torque is exported the motor that peak frequency is controlled single-rotor compressor with power model.
CN2010101887442A 2010-05-25 2010-05-25 Electric signal-based household appliance single-rotor compressor variable frequency controller and implementation method thereof Expired - Fee Related CN101826836B (en)

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JP4475528B2 (en) * 2005-03-17 2010-06-09 日立アプライアンス株式会社 Synchronous motor control device and adjustment method thereof
CN101001075B (en) * 2006-01-11 2010-05-26 海尔集团公司 Torque control device and method of DC variable frequency compressor

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