CN101210944A - Compressor three phase voltage phase sequence detection method - Google Patents
Compressor three phase voltage phase sequence detection method Download PDFInfo
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- CN101210944A CN101210944A CNA2006101307436A CN200610130743A CN101210944A CN 101210944 A CN101210944 A CN 101210944A CN A2006101307436 A CNA2006101307436 A CN A2006101307436A CN 200610130743 A CN200610130743 A CN 200610130743A CN 101210944 A CN101210944 A CN 101210944A
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Abstract
The invention discloses a method for detecting phase sequence and lacking phase of three-phase alternating current for an air conditioner compressor, which comprises the following steps of: (1) falling edge determination stage for subjecting an air conditioner compressor to square wave shaping by using three-phase alternating current for determining a falling edge of one phase of the three-phase alternating current used for the air conditioner compressor; (2) delay comparison stage for detecting and delay-comparing the levels of the other two phases of alternating currents in the three-phase alternating current after square wave treatment according to the determined falling edge of the one phase of square wave as the reference; and (3) determination stage for determining whether the three-phase alternating current has error phase sequence, lacked phase or normal phase sequence. The three-phase current phase sequence detection logic adopted by the invention can accurately determine the phase sequence or phase lacking by detecting the voltages of the other two phases when meeting the falling edge, thus effectively protecting the compressor at low cost.
Description
Technical field
The present invention relates to the phase sequence detecting method of a kind of compressor, particularly relate to the detection method of a kind of cooler compressor with phase order of 3-phase AC and phase shortage with three-phase electricity.
Background technology
Three-phase alternating current has more advantage in other scheme of comparison aspect generating, transmission of electricity and the commercial power, so the mode of three-phase alternating current is all adopted in countries in the world.Usually the three-phase alternating current that is sent by threephase alternator is upgraded to the three-phase high voltage through three-phase transformer, can reach high voltage classifications such as 35KV or 10KV and carry, if fed distance is far, can also carry as conveyings such as 220KV with higher voltage.No matter carry with how high voltage, the voltage step-down that finally need will be higher than 10KV through the user transformers of afterbody uses sort circuit to claim the low-voltage customer circuit again to single-phase voltage 220V (line voltage 380V) back for the user.
By three electric system that frequency is identical, the electromotive force amplitude equates, the alternating circuit of phase differential mutual deviation hexagonal angle is formed, be called the three-phase alternating current electric system.Using as power, only use three-way power supply, is three-phase with A, B, C or U, V, W symbolic representation usually, and voltage between phase and phase is line voltage, and voltage is 380V, and the bigger equipment of capacity such as power supply motivation use.
And for the electricity consumption based on illumination, household electrical appliance etc., then be by the three-phase and four-line power supply, wherein a line is a zero line, and three-way in addition is phase line, and voltage is phase voltage between phase line and zero line, and voltage is 220V.Make for illumination, household electrical appliance in two lines of power supply of electricity consumption, wherein one is phase line (claiming live wire again), and another root is a zero line, we can say that also single-phase electricity only used 1/3rd of three-phase electricity.Can't be zero line being received on another root phase line when wiring, otherwise the voltage of 380V receives on user's the electrical equipment of 220V and major accident will occur, causes the loss that can not save.The load that should be noted that three-phase electricity during the electricity consumption distribution needs balance, that is to say that the load that each phase connects is equal substantially, generally differs and can not surpass 20%, otherwise can cause the three-phase voltage difference, influences the safe operation of consumer electronics.
Because three-phase supply, load and electrical appliance, it is different to make that three-phase voltage produces, as phase sequence mistake, phase shortage etc.When generally determining the phase sequence of threephase motor, major part all is to transfer judgement by the positive and negative of threephase motor, or uses the above oscillograph of two tracks to determine.
Also having a kind of phase sequence detecting method is the zero passage detection method, but in the three-phase air conditioner motor is used, just exists uncertain with the zero passage detection method.The air conditioner motor that does not have the zero line star connection with three-phase is an example: when three-phase electricity is working properly, detect with oscillograph that A, B, three frequencies of C are identical, voltage amplitude equates, the sinusoidal ac corrugating of phase differential mutual deviation hexagonal angle, and when a certain phase phase shortage in the three-phase electricity, can measure a voltage waveform except that normal two phase voltage waveforms equally with oscillograph, its voltage amplitude and frequency difference, if method with zero passage detection, then may produce erroneous judgement and think not phase shortage, and only be that phase sequence is incorrect.
The air conditioner of the practical three-phase supply compressor of LGTEA production at present all contains compressor R, S, it detects logic as shown in Figure 1 T three-phase electricity phase sequence measuring ability, to R, S, the T three-phase voltage carries out comparing after the processing of shaping square wave, the R phase signals that the single-chip microcomputer of correspondence receives when certain period R phase voltage is the highest is 1, other two phase signals is 0, when should the S phase voltage the highest, the S signal is 1, as (R, S, the phase sequence of three-phase electricity was correct when value T) was following the variation, promptly (1,0,0) becomes (0,1,0) becomes (0,0,1), though this automatically controlled plate can accurately be judged the phase sequence of compressor with three-phase electricity, but need whole dependence on import, cost is higher, is unfavorable for applying.
Summary of the invention
Technical matters to be solved by this invention is, overcomes the shortcoming of prior art, provides a kind of and can accurately detect the detection method of cooler compressor with phase order of 3-phase AC and phase shortage, and save cost.
The technical solution used in the present invention is: a kind of cooler compressor is with the detection method of phase order of 3-phase AC and phase shortage, may further comprise the steps: 1. pair cooler compressor carries out square wave shaping processing with three-phase alternating current, the identification cooler compressor negative edge the stage of recognition of the negative edge of the wherein phase in the three-phase alternating current; 2. the negative edge with a phase square wave of described affirmation is a benchmark, detect, time-delay relatively other two-phase alternating current square wave in the three-phase alternating current handle the time-delay comparison phase of back level height; 3. judge three-phase alternating current whether phase sequence mistake, phase shortage or normal decision stage.
At described negative edge the stage of recognition, first with carrying out square wave shaping processing behind each commutating phase in R, S, the T three-phase alternating current, when selecting for use R phase negative edge to be benchmark, the square wave of S, T phase is carried out the time-delay comparison of level height; When selecting for use S phase negative edge to be benchmark, the square wave of T, R phase is carried out the time-delay comparison of level height, when selecting for use T phase negative edge to be benchmark, the square wave of R, S phase is carried out the time-delay comparison of level height.
When the described R of selecting for use phase negative edge was benchmark, the time-delay that the square wave of S, T phase is carried out the level height was relatively the time, if S is High, T is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if S, T are respectively Low, High or High, High, be judged to be the anti-phase wiring; When the described S of selecting for use phase negative edge was benchmark, the time-delay that the square wave of T, R phase is carried out the level height was relatively the time, if T is High, R is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if T, R are respectively Low, High or High, High, be judged to be the anti-phase wiring; When the described T of selecting for use phase negative edge was benchmark, the time-delay that the square wave of R, S phase is carried out the level height was relatively the time, if R is High, S is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if R, S are respectively Low, High or High, High, be judged to be the anti-phase wiring.
When the described R of selecting for use phase negative edge was benchmark, described negative edge interrupted the discontented certain number of times of frequency, and perhaps S phase or T exist certain hour to continue Low or High mutually, are judged to be phase shortage; When the described S of selecting for use phase negative edge was benchmark, described negative edge interrupted the discontented certain number of times of frequency, and perhaps T phase or R exist certain hour to continue Low or High mutually, are judged to be phase shortage; When the described T of selecting for use phase negative edge was benchmark, described negative edge interrupted the discontented certain number of times of frequency, and perhaps R phase or S exist certain hour to continue Low or High mutually, are judged to be phase shortage.
Behind the power connection 5 second continuous detecting, determine then whether cooler compressor moves.
The invention has the beneficial effects as follows: can accurately judge phase sequence or phase shortage owing to adopt logic that three-phase electricity phase sequence of the present invention detects simultaneously the voltage of other two-phase to be detected when running into negative edge, compressor is effectively protected, expense is cheap.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is done a detailed description:
Fig. 1 judges cooler compressor three-phase electricity phase sequence detection waveform and logical diagram in the prior art;
Fig. 2 is that the present invention judges cooler compressor three-phase electricity phase sequence detection waveform and logical diagram;
Fig. 3 is that the present invention judges the process flow diagram that cooler compressor detects with the three-phase electricity phase sequence.
Embodiment
As shown in Figure 2 to Figure 3, a kind of cooler compressor is with the detection method of phase order of 3-phase AC and phase shortage, may further comprise the steps: cooler compressor is carried out the square wave shaping with three-phase alternating current handle, the identification cooler compressor negative edge the stage of recognition of the negative edge of the wherein phase in the three-phase alternating current; Negative edge with a phase square wave of described affirmation is a benchmark, detect, time-delay relatively other two-phase alternating current square wave in the three-phase alternating current handle the time-delay comparison phase of back level height; Judge three-phase alternating current whether phase sequence mistake, phase shortage or normal decision stage.
At described negative edge the stage of recognition, handle carrying out the square wave shaping behind each commutating phase in R, S, the T three-phase alternating current earlier, when select for use cooler compressor with in the three-phase electricity wherein one during mutually for reference voltage base, if starting point is an example with sinusoidal wave starting point, after being described, each commutating phase in the three-phase alternating current carries out square wave shaping processing, this electric mutually sinusoidal wave positive half cycle is a high level, this electric mutually sinusoidal wave negative half period is a low level, in like manner, other two-phases are identical with the method for described formation high-low level.
When selecting for use R phase negative edge to be benchmark, the square wave of S, T phase is carried out the time-delay comparison of level height; When selecting for use S phase negative edge to be benchmark, the square wave of T, R phase is carried out the time-delay comparison of level height, when selecting for use T phase negative edge to be benchmark, the square wave of R, S phase is carried out the time-delay comparison of level height.When the described R of selecting for use phase negative edge was benchmark, the time-delay that the square wave of S, T phase is carried out the level height was relatively the time, if S is High, T is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if S, T are respectively Low, High or High, High, be judged to be the anti-phase wiring; When the described S of selecting for use phase negative edge was benchmark, the time-delay that the square wave of T, R phase is carried out the level height was relatively the time, if T is High, R is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if T, R are respectively Low, High or High, High, be judged to be the anti-phase wiring; When the described T of selecting for use phase negative edge was benchmark, the time-delay that the square wave of R, S phase is carried out the level height was relatively the time, if R is High, S is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if R, S are respectively Low, High or High, High, be judged to be the anti-phase wiring;
When the described R of selecting for use phase negative edge was benchmark, described negative edge interrupted the discontented certain number of times of frequency, and perhaps S phase or T exist certain hour to continue Low or High mutually, are judged to be phase shortage; When the described S of selecting for use phase negative edge was benchmark, described negative edge interrupted the discontented certain number of times of frequency, and perhaps T phase or R exist certain hour to continue Low or High mutually, are judged to be phase shortage; When the described T of selecting for use phase negative edge was benchmark, described negative edge interrupted the discontented certain number of times of frequency, and perhaps R phase or S exist certain hour to continue Low or High mutually, are judged to be phase shortage.Behind the power connection 5 second continuous detecting, determine then whether cooler compressor moves.
It is worthy of note; protection scope of the present invention is not limited to above-mentioned instantiation mode, and according to basic fundamental design of the present invention, those of ordinary skills need not through creative work; the embodiment that can associate all belongs to protection scope of the present invention.
Claims (5)
1. a compressor is characterized in that may further comprise the steps with the phase sequence detecting method of three-phase electricity:
1) cooler compressor is carried out the square wave shaping with three-phase alternating current and handle, the identification cooler compressor negative edge the stage of recognition of the negative edge of the wherein phase in the three-phase alternating current;
2) negative edge with a phase square wave of described affirmation is a benchmark, detect, time-delay relatively other two-phase alternating current square wave in the three-phase alternating current handle the time-delay comparison phase of back level height;
3) judge three-phase alternating current whether phase sequence mistake, phase shortage or normal decision stage.
2. the compressor according to claim 1 phase sequence detecting method of three-phase electricity, it is characterized in that: at described negative edge the stage of recognition, handle carrying out the square wave shaping behind each commutating phase in R, S, the T three-phase alternating current earlier, when selecting for use R phase negative edge to be benchmark, the square wave of S, T phase is carried out the time-delay comparison of level height; When selecting for use S phase negative edge to be benchmark, the square wave of T, R phase is carried out the time-delay comparison of level height, when selecting for use T phase negative edge to be benchmark, the square wave of R, S phase is carried out the time-delay comparison of level height.
3. the compressor according to claim 2 phase sequence detecting method of three-phase electricity, it is characterized in that: when the described R of selecting for use phase negative edge is benchmark, the time-delay that the square wave of S, T phase is carried out the level height is relatively the time, if S is High, T is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if S, T are respectively Low, High or High, High, be judged to be the anti-phase wiring; When the described S of selecting for use phase negative edge was benchmark, the time-delay that the square wave of T, R phase is carried out the level height was relatively the time, if T is High, R is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if T, R are respectively Low, High or High, High, be judged to be the anti-phase wiring; When the described T of selecting for use phase negative edge was benchmark, the time-delay that the square wave of R, S phase is carried out the level height was relatively the time, if R is High, S is Low, and judges that number of times greater than certain number of times, is judged to be positive phase connection, if R, S are respectively Low, High or High, High, be judged to be the anti-phase wiring.
4. the compressor according to claim 3 phase sequence detecting method of three-phase electricity, it is characterized in that: when the described R of selecting for use phase negative edge is benchmark, described negative edge interrupts the discontented certain number of times of frequency, perhaps S phase or T exist certain hour to continue Low or High mutually, are judged to be phase shortage; When the described S of selecting for use phase negative edge was benchmark, described negative edge interrupted the discontented certain number of times of frequency, and perhaps T phase or R exist certain hour to continue Low or High mutually, are judged to be phase shortage; When the described T of selecting for use phase negative edge was benchmark, described negative edge interrupted the discontented certain number of times of frequency, and perhaps R phase or S exist certain hour to continue Low or High mutually, are judged to be phase shortage.
5. according to the phase sequence detecting method of the described compressor of any right claim in the claim 1 to 4, it is characterized in that with three-phase electricity: behind the power connection 5 second continuous detecting, determine then whether cooler compressor moves.
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| CNA2006101307436A CN101210944A (en) | 2006-12-30 | 2006-12-30 | Compressor three phase voltage phase sequence detection method |
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| CNA2006101307436A CN101210944A (en) | 2006-12-30 | 2006-12-30 | Compressor three phase voltage phase sequence detection method |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004193A (en) * | 2010-09-14 | 2011-04-06 | 徐国治 | Three-phase alternating-current phase sequence detecting method and device thereof |
| CN102095945A (en) * | 2010-12-07 | 2011-06-15 | 广州三晶电气有限公司 | Open-phase detection device for digital three-phase alternating-current phase sequence and detection method thereof |
| CN102262218A (en) * | 2011-06-20 | 2011-11-30 | 宁波奥克斯空调有限公司 | Method for detecting open phases of three-phase power source for compressor |
| CN102455396A (en) * | 2011-05-09 | 2012-05-16 | 大连市旅顺电力电子设备有限公司 | Three-phase alternating current open-phase and reverse phase detection method |
| CN102914703A (en) * | 2012-10-17 | 2013-02-06 | 南京理工大学 | Phase sequence rapid measuring method based on instantaneous point |
| CN102944760A (en) * | 2012-10-17 | 2013-02-27 | 中色科技股份有限公司 | Simple and easy phase sequence test method of three-phase alternating current |
| CN103187766A (en) * | 2011-12-31 | 2013-07-03 | 比亚迪股份有限公司 | Electricity system identification method and device for external power supply in process of charging electric automobile |
| CN103308816A (en) * | 2013-05-24 | 2013-09-18 | 康力电梯股份有限公司 | Detection circuit for three-phase alternating current phase dislocation and phase loss and detection method of detection circuit |
| CN103412200A (en) * | 2013-06-28 | 2013-11-27 | 特变电工新疆新能源股份有限公司 | Three-phase alternating current phase sequence detection method and device |
| CN104267267A (en) * | 2014-09-30 | 2015-01-07 | 广州日滨科技发展有限公司 | Phase sequence recognition method and system of energy feedback grid-connected inverter |
| CN104360173A (en) * | 2014-08-12 | 2015-02-18 | 东莞市润星机械科技有限公司 | Phase sequence detection method for three-phase alternating currents |
| CN105259429A (en) * | 2015-10-30 | 2016-01-20 | 厦门科华恒盛股份有限公司 | Three-phase electricity phase sequence judging method |
| CN106546832A (en) * | 2016-12-08 | 2017-03-29 | 珠海格力电器股份有限公司 | A kind of detection means and its using method of three phase mains |
| CN106597133A (en) * | 2016-12-15 | 2017-04-26 | 福州大学 | Method and device for recognition and identification of low-voltage power grid single-phase line phase sequence |
| CN106645951A (en) * | 2017-02-24 | 2017-05-10 | 珠海格力电器股份有限公司 | Three-phase circuit detection apparatus and method |
| CN107782983A (en) * | 2017-11-20 | 2018-03-09 | 上海辛格林纳新时达电机有限公司 | A kind of detection method of servo-driver output phase shortage |
| CN110333400A (en) * | 2019-08-19 | 2019-10-15 | 陕西万方节能科技股份有限公司 | A kind of three-phase power supply phase sequence and phase interruption testing device and method |
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2006
- 2006-12-30 CN CNA2006101307436A patent/CN101210944A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004193A (en) * | 2010-09-14 | 2011-04-06 | 徐国治 | Three-phase alternating-current phase sequence detecting method and device thereof |
| CN102095945B (en) * | 2010-12-07 | 2013-04-10 | 广州三晶电气有限公司 | Open-phase detection device for digital three-phase alternating-current phase sequence and detection method thereof |
| CN102095945A (en) * | 2010-12-07 | 2011-06-15 | 广州三晶电气有限公司 | Open-phase detection device for digital three-phase alternating-current phase sequence and detection method thereof |
| CN102455396A (en) * | 2011-05-09 | 2012-05-16 | 大连市旅顺电力电子设备有限公司 | Three-phase alternating current open-phase and reverse phase detection method |
| CN102262218A (en) * | 2011-06-20 | 2011-11-30 | 宁波奥克斯空调有限公司 | Method for detecting open phases of three-phase power source for compressor |
| CN102262218B (en) * | 2011-06-20 | 2013-08-28 | 宁波奥克斯空调有限公司 | Method for detecting open phases of three-phase power source for compressor |
| CN103187763A (en) * | 2011-12-31 | 2013-07-03 | 比亚迪股份有限公司 | Phase sequence identification method and device during charging of electric automobile |
| CN103187766A (en) * | 2011-12-31 | 2013-07-03 | 比亚迪股份有限公司 | Electricity system identification method and device for external power supply in process of charging electric automobile |
| CN103187766B (en) * | 2011-12-31 | 2016-05-11 | 比亚迪股份有限公司 | The recognition methods processed of the electricity of external power source and device when charging electric vehicle |
| CN103187763B (en) * | 2011-12-31 | 2015-08-26 | 比亚迪股份有限公司 | Phase sequence identification method during charging electric vehicle and phase sequence recognition device |
| CN102944760A (en) * | 2012-10-17 | 2013-02-27 | 中色科技股份有限公司 | Simple and easy phase sequence test method of three-phase alternating current |
| CN102914703A (en) * | 2012-10-17 | 2013-02-06 | 南京理工大学 | Phase sequence rapid measuring method based on instantaneous point |
| CN102914703B (en) * | 2012-10-17 | 2015-04-29 | 南京理工大学 | Phase sequence rapid measuring method based on instantaneous point |
| CN103308816A (en) * | 2013-05-24 | 2013-09-18 | 康力电梯股份有限公司 | Detection circuit for three-phase alternating current phase dislocation and phase loss and detection method of detection circuit |
| CN103412200A (en) * | 2013-06-28 | 2013-11-27 | 特变电工新疆新能源股份有限公司 | Three-phase alternating current phase sequence detection method and device |
| CN104360173A (en) * | 2014-08-12 | 2015-02-18 | 东莞市润星机械科技有限公司 | Phase sequence detection method for three-phase alternating currents |
| CN104267267A (en) * | 2014-09-30 | 2015-01-07 | 广州日滨科技发展有限公司 | Phase sequence recognition method and system of energy feedback grid-connected inverter |
| CN104267267B (en) * | 2014-09-30 | 2018-05-08 | 日立楼宇技术（广州）有限公司 | The phase sequence identification method and system of energy feedback gird-connected inverter |
| CN105259429A (en) * | 2015-10-30 | 2016-01-20 | 厦门科华恒盛股份有限公司 | Three-phase electricity phase sequence judging method |
| CN106546832A (en) * | 2016-12-08 | 2017-03-29 | 珠海格力电器股份有限公司 | A kind of detection means and its using method of three phase mains |
| CN106597133A (en) * | 2016-12-15 | 2017-04-26 | 福州大学 | Method and device for recognition and identification of low-voltage power grid single-phase line phase sequence |
| CN106597133B (en) * | 2016-12-15 | 2019-05-10 | 福州大学 | A kind of low voltage electric network uniline phase sequence method for identifying and classifying and device |
| CN106645951A (en) * | 2017-02-24 | 2017-05-10 | 珠海格力电器股份有限公司 | Three-phase circuit detection apparatus and method |
| CN107782983A (en) * | 2017-11-20 | 2018-03-09 | 上海辛格林纳新时达电机有限公司 | A kind of detection method of servo-driver output phase shortage |
| CN107782983B (en) * | 2017-11-20 | 2020-12-29 | 上海辛格林纳新时达电机有限公司 | Method for detecting output phase loss of servo driver |
| CN110333400A (en) * | 2019-08-19 | 2019-10-15 | 陕西万方节能科技股份有限公司 | A kind of three-phase power supply phase sequence and phase interruption testing device and method |
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