CN105262385B - A kind of machine winding preheating control method - Google Patents
A kind of machine winding preheating control method Download PDFInfo
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- CN105262385B CN105262385B CN201510780260.XA CN201510780260A CN105262385B CN 105262385 B CN105262385 B CN 105262385B CN 201510780260 A CN201510780260 A CN 201510780260A CN 105262385 B CN105262385 B CN 105262385B
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Abstract
The present invention relates to air conditioner controlling technology, and it discloses a kind of machine winding preheating control method, solves the problems, such as that motor noise is big when motor winding temperature existing for machine winding preheating scheme is reduced in conventional art, IPM overcurrent is shut down and is preheated.During into warm-up control, frequency converter current carrier frequency is switched to upper frequency, after completing frequency error factor, when positioning first, within the T0 times, motor is navigated into specified initial position γ0Location current vector transfixion maintains the T2 times, the machine winding energization T2 times, then at the appointed time T1 internal rotations location current vector to stopping the rotation after the next position specified, current phasor transfixion maintains the T2 times, the machine winding energization T2 times, after the T2 times terminate, then at the appointed time T1 internal rotations location current vector to the next new position specified, go round and begin again, untill terminating to preheat, recover frequency converter carrier frequency, complete the preheating of machine winding.The present invention is applied to air conditioner motor winding pre-add thermal control.
Description
Technical field
The present invention relates to air conditioner controlling technology, more particularly to a kind of machine winding preheating control method.
Background technology
In order to avoid winter makes outdoor compressor lubricant oil is frozen, solve motor can not starting problem, usually using electricity plus
The method that the torrid zone is heated to compressor, to overcome the technical problem that motor can not start.
But heat tape can bring the rising of product cost, therefore, designer usually finds the technology for not increasing cost
Scheme.
" winding of permagnetic synchronous motor preheats and its started motor used by method CN201210038725.0 " to patent
Winding pre-heating mean, it is possible to achieve to the purpose of motor heating, but problems be present：
1) cycle period is used as using positioning and winding heating, undergoes resultant magnetic field F1 positioning, heating certain time,
F2 positioning, heating are undergone again after stopping heating (delay), and this necessarily causes the reduction of motor winding temperature；
2) resultant magnetic field F1, F2 and F3 differs 120 degree two-by-two, if it is desired that rotor turns counterclockwise from current location
It is dynamic 120 degree, may be bigger than from the positioning target current for currently rotating counterclockwise 60 degree of needs, otherwise, motor can not turn to finger
Positioning is put, and can not realize positioning action, and heated current may not be needed it is so big.If do not shut down between positioning twice, its
Three-phase current waveform as shown in figure 1, when certainly will cause angular transformation electric current suddenly change, cause IPM overcurrent halting problems.
3) carrier frequency of frequency converter work is without reference to experiment is found, when carrier frequency is relatively low, during preheating/heating
Motor noise is very big, it is impossible to meets Consumer's Experience demand.
The content of the invention
The technical problems to be solved by the invention are：A kind of machine winding preheating control method is proposed, solves conventional art
Motor winding temperature existing for middle machine winding preheating scheme is reduced, IPM overcurrent is shut down and motor noise is big during preheating
Problem.
The present invention solves above-mentioned technical problem the technical scheme adopted is that a kind of machine winding preheating control method, bag
Include：
During into warm-up control, frequency converter current carrier frequency is switched to upper frequency, after completing frequency error factor, first
During positioning, within the T0 times, motor is navigated into specified initial position γ0, then at the appointed time T1 internal rotations location current
For vector to stopping the rotation after the next position specified, current phasor transfixion maintains the T2 times, the machine winding energization T2 times,
After the T2 times terminate, then at the appointed time T1 internal rotations location current vector to the next new position specified, goes round and begins again, until
Untill terminating preheating, recover frequency converter carrier frequency, complete the preheating of machine winding.
Further, it is described to position first, refer within the T0 times, control q shaft current orders Iq=0, and d shaft currents are ordered
Make IdTo position the LPF numerical value of target current, location current is allowed slowly to change to the target current specified, controlled motor from 0
Rotor turns to the initial position γ specified0。
Further, within the T1 times, rotational positioning vector is rotated counterclockwise to specified next bit from current location
Put, refer to the angle △ θ increments that the angle increase between current location current vector and d axles is specified, i.e. θn=θn-1+ △ θ, θ0=
γ0。
Further, the γ0Equal to 0 degree or 30 degree, depending on selection using two-phase be powered or three-phase powered-on mode and
Fixed, △ θ=60 °, T0, T1, T2 time is selected as needed, and T0 is typically less than 5 seconds, and the T1 times are typically chosen 1 second, and during T2
Between generally 10 seconds.
It is further, described to refer to that receiving preheating halt instruction or preheating time terminates untill terminating to preheat,
Stop warm-up control.
Further, it is described enter warm-up control when, by frequency converter current carrier frequency be switched to upper frequency refer to by
Frequency converter current carrier frequency is switched to more than 16KHz.
The beneficial effects of the invention are as follows：
Because heated current continues, solves the problems, such as motor winding temperature reduction；Meanwhile machine winding location current and
Heated current size is constant, each slowly varying 60 degree of angle, avoids IPM overcurrent halting problems；Experiment is found, works as use
During more than 16KHz frequency converter carrier frequency, preheating/heating motor noise problem can solve the problem that.
Brief description of the drawings
Fig. 1 is 120 degree every time change three-phase current waveform diagrams；
Fig. 2 is location current schematic diagram first；
Fig. 3 preheats schematic diagram for 60 degree every time change three-phase windings；
Fig. 4 is current phasor structural representation under three-coordinate；
Fig. 5 is that two phase windings preheat schematic diagram.
Embodiment
The present invention is directed to propose a kind of machine winding preheating control method, solves machine winding preheating scheme in conventional art
The problem of motor noise is big when existing motor winding temperature is reduced, IPM overcurrent is shut down and is preheated.
When needing preheating, frequency converter carrier frequency is revised as the numerical value higher than current carrier frequency first, it is general big
In 16KHz, realize that low noise preheats, after preheating terminates, recover frequency converter carrier frequency.Into after preheating, position first, will
D axles positioning target current Id0By low pass filter, target current I is slowly risen to from 0d0, as shown in Fig. 2 avoiding electric current from dashing forward
Become the generation for causing IPM overcurrent problems.Now q axles location current bid value IqFor 0, orientation angle γ0Electricity is positioned for 0, d axles
Flow bid value IdTarget current I is slowly risen to from 0d0.Within positioning time T0, due to Iu=Id0cos(γ0),Iv=
Id0cos(120-γ0),Iw=Id0cos(γ0+ 120), γ0=0, thereforeAs shown in Figure 3, Figure 4, this
Direct current heats to machine winding.
After positioning time T0 reaches, as shown in figure 3, rotor fixed position is to current vector position, i.e. d shaft positions in Fig. 4.
Within the subsequent T1 times, location current vectorFrom current location (γ in Fig. 40Position) △ θ=60 ° are rotated counterclockwise, it
Afterwards, stop, stop in Fig. 4Position, dragging motor rotor are gone in Fig. 4Position,That is vectorWith
VectorIt is equal in magnitude.The transfixion time is T2, due to I within the T2 timesu=Id0cos(γ0+ △ θ), Iv=Id0cos
(120-(γ0+ △ θ)), Iw=Id0cos(120+(γ0+ △ θ)), and (γ0+ △ θ)=60 °, so
Heated current is direct current, realizes the computer heating control to machine winding.
After the T2 times terminate, continue current vectorRotate counterclockwise △ θ=60 ° are spent within the T1 times, afterwards
Residence time T2, goes round and begins again, until terminating preheating mode, as shown in Figure 3.
It based on orientation angle is the 180 degree according to 0 degree, 60 degree, 120 degree that above-mentioned control method, which is, 240 degree, 300 degree, 360
Degree, 0 degree of change, i.e. γ0=0 °, △ θ=60 °, three-phase windings preheating (or being called heating) control method, such as Fig. 3 of realization
It is shown, it can also change according to 30 degree, 90 degree, 150 degree, 210 degree, 270 degree, 330 degree, 30 degree, i.e. γ0=30 °, △ θ=
60 °, two phase windings preheating (or being called heating) control method of realization, as shown in Figure 5.
Claims (6)
- A kind of 1. machine winding preheating control method, it is characterised in that including：During into warm-up control, frequency converter current carrier frequency is switched to upper frequency, after completing frequency error factor, positioned first When, within the T0 times, motor is navigated into specified initial position γ0, then at the appointed time T1 internal rotations location current vector Stopped the rotation after to the next position specified, current phasor transfixion maintains T2 times, machine winding energization T2 times, during T2 Between terminate after, then at the appointed time T1 internal rotations location current vector arrive the next new position specified, go round and begin again, until end Untill preheating, recover frequency converter carrier frequency, complete the preheating of machine winding.
- A kind of 2. machine winding preheating control method as claimed in claim 1, it is characterised in that it is described to position first, refer to Within the T0 times, q shaft current orders I is controlledq=0, and d shaft current orders IdTo position the LPF numerical value of target current, allow Location current slowly changes to the target current specified from 0, and controlled motor rotor turns to the initial position γ specified0。
- 3. a kind of machine winding preheating control method as claimed in claim 1, it is characterised in that within the T1 times, rotation is fixed Bit vector is rotated counterclockwise to specified the next position from current location, is referred between current location current vector and d axles The angle △ θ increments that angle increase is specified, i.e. θn=θn-1+ △ θ, θ0=γ0。
- A kind of 4. machine winding preheating control method as claimed in claim 3, it is characterised in that the γ0Equal to 0 degree or 30 degree, depending on selecting using two-phase energization or three-phase powered-on mode, △ θ=60 °, the T0 ＜ 5 seconds, the T1=1 seconds, T2= 10 seconds.
- 5. a kind of machine winding preheating control method as claimed in claim 1, it is characterised in that described to be until terminating preheating Only refer to that receiving preheating halt instruction or preheating time terminates, and stops warm-up control.
- 6. a kind of machine winding preheating control method as claimed in claim 1, it is characterised in that described to enter warm-up control When, frequency converter current carrier frequency is switched to upper frequency and refers to frequency converter current carrier frequency being switched to more than 16KHz.
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| CN201510780260.XA CN105262385B (en) | 2015-11-13 | 2015-11-13 | A kind of machine winding preheating control method |
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| CN201510780260.XA CN105262385B (en) | 2015-11-13 | 2015-11-13 | A kind of machine winding preheating control method |
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| CN105262385B true CN105262385B (en) | 2018-02-16 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106160615A (en) * | 2016-08-03 | 2016-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Electric machine control system, compressor and motor heating starting method |
| CN107026591B (en) * | 2017-04-28 | 2020-06-30 | 广东美芝制冷设备有限公司 | Preheating system and method of permanent magnet synchronous motor and compressor |
| CN107246392B (en) * | 2017-05-31 | 2019-03-01 | 青岛海尔空调器有限总公司 | A kind of control method reducing compressor preheating noise |
| CN109058080B (en) * | 2018-08-13 | 2021-10-08 | 珠海格力电器股份有限公司 | Method and device for heating compressor by utilizing stator winding |
| CN109539465B (en) * | 2018-11-15 | 2020-04-28 | 珠海格力电器股份有限公司 | Preheating control method and device for compressor, storage medium and air conditioner |
| CN111865185A (en) * | 2019-04-24 | 2020-10-30 | 浙江吉智新能源汽车科技有限公司 | Motor active heating control method and system for vehicle and vehicle |
| CN111865183A (en) * | 2019-04-24 | 2020-10-30 | 浙江吉智新能源汽车科技有限公司 | Motor active heating control method and system for vehicle and vehicle |
| CN111865184A (en) * | 2019-04-24 | 2020-10-30 | 浙江吉智新能源汽车科技有限公司 | Motor active heating control method and system for vehicle and vehicle |
| CN112224054B (en) * | 2019-06-30 | 2022-04-15 | 比亚迪股份有限公司 | Energy conversion device and vehicle |
| CN111884553A (en) * | 2020-08-04 | 2020-11-03 | 儒竞艾默生环境优化技术（上海）有限公司 | Current vector control method, medium, device and system for preheating compressor |
| CN112728725B (en) * | 2021-01-22 | 2022-02-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Control device and method of compressor and air conditioner |
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| JP4154798B2 (en) * | 1999-04-23 | 2008-09-24 | 株式会社日立製作所 | AC motor control method |
| JP4899549B2 (en) * | 2005-10-31 | 2012-03-21 | ダイキン工業株式会社 | Compressor operating method of refrigeration apparatus and refrigeration apparatus |
| CN102761300B (en) * | 2012-02-20 | 2013-03-13 | 珠海格力电器股份有限公司 | Winding Preheating and Starting Method of Permanent Magnet Synchronous Motor |
| CN104113242B (en) * | 2013-06-18 | 2016-12-28 | 广东美的制冷设备有限公司 | The startup method of the DC fan of position-sensor-free and DC fan controller |
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