CN102288827B - Circuit and methods for detecting resistance value, temperature and state of motor winding in real time - Google Patents
Circuit and methods for detecting resistance value, temperature and state of motor winding in real time Download PDFInfo
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Abstract
The invention relates to a circuit and methods for detecting a resistance value, temperature and a state of a motor winding in real time. The circuit comprises a constant current source and a switching circuit which are connected with each other, wherein the control port of the constant current source is connected with an external constant current source control signal for controlling current output of the constant current source; the current output port of the constant current source is connected with the output port of the switching circuit; the control port of the switching circuit is connected with an external switching control signal; and the output port of the switching circuit is connected with a three-phase winding of an asynchronous motor. In the method, the resistance value, thetemperature or an open-circuit or short-circuit state of the winding are measured by controlling constant current output by the constant current source and the output port of the switching circuit. The circuit is simple and the methods are convenient to implement, so that the problem that the real-time resistance value of the motor winding cannot be acquired after the temperature of the motor winding is changed is solved; therefore, the control precision of a motor controller is improved, the motor and the motor controller can be protected well, and safety accidents are reduced.
Description
Technical field
The invention belongs to machine field, the real-time detection circuit of especially a kind of resistance of motor winding, temperature, state and method thereof.
Background technology
Asynchronous machine in use, often because the abnormality of winding, reasons such as, open circuit too high as temperature, short circuit cause damaging motor or other power equipments, may bring security incident when serious.At present, the testing circuit of motor winding state and method are normally measured winding temperature at the pre-buried temperature sensor of motor internal, but there is following shortcoming in this mode: the temperature value of 1, measuring only is the local temperature of winding, can not reflect the bulk temperature of motor winding; 2, very high to the machining requirement of motor, on a lot of motors, realization can not be installed; If 3 sensors or connection sensor line damage, then can't repair, can only replace whole motor.
Being extensive use of on motor along with frequency converter or other controllers, the resistance value of motor winding has become one of key index of the control accuracy that influences controller.In actual use, the resistance value of motor winding can change with variation of temperature, if can detect the resistance value of motor winding in real time, can improve control accuracy and the accuracy of controller greatly.But, have better the method that resistance, temperature and open circuit or short-circuit condition to electric machine winding resistance detect at present or not.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art; a kind of resistance, temperature of motor winding, real-time detection circuit and the method thereof of state are provided; this invention detects resistance, temperature or the state that constant current source and on-off circuit and motor winding link together to the motor winding in real time; can in time find electrical fault and stop machine operation, thereby reach the purpose of protecting motor.
The present invention solves its technical matters and takes following technical scheme to realize:
The real-time detection circuit of a kind of resistance of motor winding, temperature, state, connected and composed by constant current source and on-off circuit, the constant current source control port links to each other with the outside constant current source control signal output port of control constant current source electric current output, the control port of on-off circuit links to each other with the switch controlling signal output port of outside, and the output port of on-off circuit is connected with three phase windings of asynchronous machine respectively;
Described on-off circuit comprises six switching tubes, the grid of six switching tubes is connected with the switch controlling signal of outside respectively, the source electrode of switching tube Q1 is connected with the drain electrode of switching tube Q4 and is connected to as output port U on the current output terminal mouth of the winding A of asynchronous machine and constant current source, the source electrode of switching tube Q2 is connected with the drain electrode of switching tube Q5 and is connected to as output port V on the winding B of asynchronous machine, the source electrode of switching tube Q3 is connected with the drain electrode of switching tube Q6 and is connected on the winding C of asynchronous machine switching tube Q4 as output port W, switching tube Q5, the source electrode of switching tube Q6 links to each other with power supply " common port ";
Described constant current source is by triode Q7, triode Q8, triode Q9, stabilivolt D1, resistance R 1, resistance R 2 connects and composes, outside constant current source control signal output port is connected on the emitter of triode Q7 by resistance R 2, the base stage of triode Q7 is connected with+5V power supply, the positive pole of the collector of triode Q7 and stabilivolt D1 and triode Q8, the base stage of triode Q9 is connected, the negative pole of stabilivolt D1 is connected with+15V power supply, triode Q8, the emitter of triode Q9 is connected with+15V power supply by resistance R 1, triode Q8, the collector of triode Q9 is connected to the output port U of on-off circuit, triode Q8 as the current output terminal mouth of constant current source by diode D2, the collector of triode Q9 also is connected with the winding A of asynchronous machine by diode D2 as the current output terminal mouth of constant current source.
And described switching tube Q1-Q6 is frequency converter IGBT switching device.
And the constant current source control signal of described outside and switch controlling signal are the digital signaling zero or 1 that microprocessor or digital circuit produce.
A kind of real-time detection method of motor winding resistance value may further comprise the steps:
Step 1: gauge tap pipe Q4 opens and makes constant current source output continuous current, gathers the pressure reduction V of constant current source delivery outlet
q
Step 2: gauge tap pipe Q5 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
1, this pressure reduction V
1=V
AB+ V
q, and then obtain the voltage V of motor winding A and B
ABAnd the resistance R of motor winding A and B
AB
Step 3: according to the characteristic of asynchronous machine, the resistance value of its three phase winding is basic identical, can obtain the resistance value R of motor three phase windings
A, R
B, R
C
And described gauge tap pipe Q4 deployment method is: switch controlling signal V1, V2, V3, V5, the V6 of outside are made as 0, the switch controlling signal V4 of outside is made as 1, then switching tube Q1, Q2, Q3, Q5, Q6 close, and switching tube Q4 opens; Described gauge tap pipe Q5 deployment method is: switch controlling signal V1, V2, V3, V4, the V6 of outside are made as 0, and outside switch controlling signal V5 is made as 1, and then switching tube Q1, Q2, Q3, Q4, Q6 close, and switching tube Q5 opens; The method of control constant current source output continuous current is: the constant current source control signal of outside is made as 0, then constant current source output continuous current; Described switch controlling signal V1, V2, V3, V4, V5, V6 be gauge tap pipe Q1, Q2, Q3, Q4, Q5, Q6 respectively.
A kind of real-time detection method of motor winding temperature may further comprise the steps:
Step 1: adopt the real-time detection method of motor winding resistance value as claimed in claim 4, calculate the resistance R of three phase windings under normal temperature or the known temperature
A, R
B, R
C
Step 2: adopt the real-time detection method of motor winding resistance value as claimed in claim 4, calculate the resistance R of three phase windings in real time
A, R
B, R
C
Step 3: the temperature that detects the motor winding according to following formula:
t
2=[R
2*(K+t
1)/R
1]-K
Wherein: the inverse of conductor resistance temperature coefficient when K represents 0 ℃, copper gets 235, and aluminium gets 228;
R
1Expression t
1℃ the time conductor resistance;
R
2Expression t
2℃ the time conductor resistance.
A kind of real-time detection method of motor winding state may further comprise the steps:
Step 1: gauge tap pipe Q4 opens and makes constant current source output continuous current, gathers the pressure reduction V of constant current source delivery outlet
q
Step 2: gauge tap pipe Q5 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
1, this pressure reduction V
1=V
AB+ V
q, and then obtain the voltage V of motor winding A and B
ABAnd the resistance R of motor winding A and B
AB
Step 3: gauge tap pipe Q6 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
2, and then obtain the voltage V of motor winding A and C
ACAnd the resistance R of motor winding A and C
AC
Step 4: according to the characteristic of asynchronous machine, work as R
ABAnd R
ACWherein one numerical exception and surpass the scope of regulation, then represent winding open circuit or short circuit.
And, switch controlling signal V1, V2, V3, V5, the V6 of outside is made as 0, the switch controlling signal V4 of outside is made as 1, then switching tube Q1, Q2, Q3, Q5, Q6 close, and switching tube Q4 opens; Described gauge tap pipe Q5 deployment method is: switch controlling signal V1, V2, V3, V4, the V6 of outside are made as 0, and outside switch controlling signal V5 is made as 1, and then switching tube Q1, Q2, Q3, Q4, Q6 close, and switching tube Q5 opens; Described gauge tap pipe Q6 deployment method is: switch controlling signal V1, V2, V3, V4, the V5 of outside are made as 0, and outside switch controlling signal V6 is made as 1, and then switching tube Q1, Q2, Q3, Q4, Q5 close, and switching tube Q6 opens; The method of control constant current source output continuous current is: the constant current source control signal of outside is made as 0, then constant current source output continuous current; Described switch controlling signal V1, V2, V3, V4, V5, V6 be gauge tap pipe Q1, Q2, Q3, Q4, Q5, Q6 respectively.
Advantage of the present invention and good effect are:
1, the present invention exports the output port of continuous current and on-off circuit in order to measure winding resistance and state by the control constant current source; can detect resistance, temperature and open circuit or the short-circuit condition of motor winding real-time and accurately; thereby can identify the fault of motor rapidly, realize the protective effect function to motor.
2, the present invention can detect the resistance value of motor winding in real time, can analyze winding loss and the induction electromotive force of motor more accurately, improve accuracy and the stability of Frequency Converter Control better, thereby make motor when satisfying the moment coupling, operate in energy-efficient state all the time
Can calculate simultaneously the machine torque of motor reality more accurately, especially for the overload protection field of crane, improve the precision of computational load greatly.
3, the present invention can detect the temperature value of motor winding in real time; when the temperature of motor winding was too high, it was unusual to identify the motor winding temperature fast, in time stops the work of motor; thereby reach the purpose of protection motor, can be widely used in the temperature protection field of motor.
4, the present invention can detect short circuit or the open-circuit condition of motor winding in real time, when the unusual specialized range that also surpasses appears in the motor winding resistance of measuring, then in time stops machine operation, thereby reaches the purpose of protection motor.
5, the simple in structure and detection method of testing circuit of the present invention is convenient to realize; solved controller can't obtain the real-time resistance value of motor winding after the motor winding temperature changes problem; thereby improved the control accuracy of electric machine controller greatly; simultaneously play the better protection effect for motor and controller thereof, significantly reduced the generation of security incident.
Description of drawings
Fig. 1 is testing circuit synoptic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described.
The real-time detection circuit of a kind of asynchronous machine winding resistance, winding state as Fig. 1, is connected and composed by constant current source and on-off circuit.The constant current source control port links to each other with the constant current source control signal C of outside, this control signal C is used for the output of control constant current source electric current, the current output terminal mouth I of constant current source links to each other with the output port U of on-off circuit by diode, the control port of on-off circuit links to each other with switch controlling signal V1, V2, V3, V4, V5, the V6 of outside, above-mentioned switch controlling signal V1, V2, V3, V4, V5, V6 can control the measurement of different winding resistances and winding state, and output port U, the V of on-off circuit, W link to each other with three phase winding A, B, the C of asynchronous machine respectively.The digital signaling zero or 1 that the control signal C of said external, V1, V2, V3, V4, V5, V6 can be produced by microprocessor or digital circuit.
On-off circuit comprises six switching tube Q1, switching tube Q2, switching tube Q3, switching tube Q4, switching tube Q5, switching tube Q6, switching tube adopts frequency converter IGBT switching device, the grid of switching tube Q1, switching tube Q2, switching tube Q3, switching tube Q4, switching tube Q5, switching tube Q6 is connected with switch controlling signal V1, V2, V3, V4, V5, the V6 of outside respectively, and above-mentioned switch controlling signal can be controlled the measurement of different winding resistances and state.The emitter of switching tube Q1 is connected with the collector of switching tube Q4 and is connected to as output port U on the current output terminal mouth of the winding A of asynchronous machine and constant current source, the emitter of switching tube Q2 is connected with the collector of switching tube Q5 and is connected to as output port V on the winding B of asynchronous machine, the emitter of switching tube Q3 is connected with the collector of switching tube Q6 and is connected to as output port W on the winding C of asynchronous machine, and the emitter of switching tube Q4, switching tube Q5, switching tube Q6 links to each other with power supply " common port ".
Constant current source comprises triode Q7, triode Q8, triode Q9, stabilivolt D1, resistance R 1, resistance R 2 connects and composes, outside constant current source control signal C is connected on the emitter of triode Q7 by resistance R 2, the grid of triode Q7 is connected with+5V power supply, the positive pole of the collector of triode Q7 and stabilivolt D1 and triode Q8, the grid of triode Q9 is connected, the negative pole of stabilivolt D1 is connected with+15V power supply, triode Q8, the emitter of triode Q9 is connected with+15V power supply by resistance R 1, triode Q8, the collector of triode Q9 is connected to the output port of on-off circuit, triode Q8 as the current output terminal mouth of constant current source by diode D2, the collector of triode Q9 also is connected with the winding A of asynchronous machine by diode D2 as the current output terminal mouth of constant current source.In the present embodiment, the electric current of constant current source is output as 100mA.
A kind of real-time detection method of motor winding resistance value may further comprise the steps:
Step 1: gauge tap pipe Q4 opens and makes constant current source output continuous current, gathers the pressure reduction V of constant current source delivery outlet
qDetailed process is as follows:
Switch controlling signal V1, V2, V3, V5, the V6 of the outside of on-off circuit are made as 0, and outside switch controlling signal V4 is made as 1, and namely switching tube Q1, Q2, Q3, Q5, Q6 close, and switching tube Q4 opens; C is made as 0 with the constant current source control signal, constant current source output 100mA.Gather the magnitude of voltage of constant current source delivery outlet (among the figure this moment
End), be designated as the pressure reduction V of switching tube
Q4, because six switching tubes are when same current flows through, their voltage difference is identical, so the switch tube voltage note is made V
q
Step 2: gauge tap pipe Q5 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
1, this pressure reduction V
1=V
AB+ V
q, and then obtain the voltage V of motor winding A and B
ABAnd the resistance R of motor winding A and B
ABDetailed process is:
Switch controlling signal V1, V2, V3, V4, the V6 of the outside of on-off circuit are made as 0, and external control signal V5 is made as 1, and namely switching tube Q1, Q2, Q3, Q4, Q6 close, and switching tube Q5 opens; C is made as 0 with the constant current source control signal, constant current source output 100mA.Gather the magnitude of voltage of constant current source delivery outlet (among the figure this moment
End), be designated as the pressure reduction V of switching tube
1, this pressure reduction V
1=V
AB+ V
qTherefore, obtain the voltage V of motor winding A and B
AB, because therefore current source supply electric current 100mA can obtain R
AB
Step 3: according to the characteristic of asynchronous machine, the resistance value of its three phase winding is basic identical, can obtain the resistance value R of motor three phase windings
A, R
B, R
C
A kind of real-time detection method of asynchronous machine winding temperature value may further comprise the steps:
Step 1: adopt the real-time detection method of motor winding resistance value, calculate the resistance R of three phase windings under normal temperature or the known temperature
A, R
B, R
C
Step 2: adopt the real-time detection method of motor winding resistance value, calculate the resistance R of three phase windings in real time
A, R
B, R
C
Step 3: the temperature that detects the motor winding according to following formula:
t
2=[R
2*(K+t
1)/R
1]-K
Wherein: the inverse of conductor resistance temperature coefficient when K represents 0 ℃, copper gets 235, and aluminium gets 228;
R
1Expression t
1℃ the time conductor resistance;
R
2Expression t
2℃ the time conductor resistance.
Can measure temperature t when the front motor winding in real time by above-mentioned steps
2, work as temperature t
2It is unusual to identify the motor winding temperature fast when too high, in time stops the work of motor, thereby reaches the purpose of protection motor, can be widely used in the emergency protection field of motor.
A kind of real-time detection method of asynchronous machine winding state may further comprise the steps:
Step 1: gauge tap pipe Q4 opens and makes constant current source output continuous current, gathers the pressure reduction V of constant current source delivery outlet
qThe detailed process of this step is as follows:
Switch controlling signal V1, V2, V3, V5, the V6 of the outside of on-off circuit are made as 0, and outside switch controlling signal V4 is made as 1, and namely switching tube Q1, Q2, Q3, Q5, Q6 close, and switching tube Q4 opens; C is made as 0 with the constant current source control signal, constant current source output 100mA.Gather the magnitude of voltage of constant current source delivery outlet (among the figure this moment
End), be designated as the pressure reduction V of switching tube
Q4, because six switching tubes are when same current flows through, their voltage difference is identical, so the switch tube voltage note is made V
q
Step 2: gauge tap pipe Q5 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
1, this pressure reduction V
1=V
AB+ V
q, and then obtain the voltage V of motor winding A and B
ABAnd the resistance R of motor winding A and B
ABThe detailed process of this step is:
Switch controlling signal V1, V2, V3, V4, the V6 of the outside of on-off circuit are made as 0, and external control signal V5 is made as 1, and namely switching tube Q1, Q2, Q3, Q4, Q6 close, and switching tube Q5 opens; C is made as 0 with the constant current source control signal, constant current source output 100mA.Gather the magnitude of voltage of constant current source delivery outlet (among the figure this moment
End), be designated as the pressure reduction V of switching tube
1, this pressure reduction V
1=V
AB+ V
qTherefore, obtain the voltage V of motor winding A and B
AB, because therefore current source supply electric current 100mA can obtain R
AB
Step 3: gauge tap pipe Q6 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
2, this pressure reduction V
2=V
AC+ V
q, and then obtain the voltage V of motor winding A and C
ACAnd the resistance R of motor winding A and C
ACThe detailed process of this step is:
Switch controlling signal V1, V2, V3, V4, the V5 of the outside of on-off circuit are made as 0, and external control signal V6 is made as 1, and namely switching tube Q1, Q2, Q3, Q4, Q5 close, and switching tube Q6 opens; C is made as 0 with the constant current source control signal, constant current source output 100mA.Gather the magnitude of voltage of constant current source delivery outlet (among the figure this moment
End), be designated as the pressure reduction V of switching tube
2, this pressure reduction V
2=V
AC+ V
qTherefore, obtain the voltage V of motor winding A and C
AC, because therefore current source supply electric current 100mA can obtain R
AC
Step 4: according to the characteristic of asynchronous machine, the resistance value of three phase windings is basic identical, works as R
ABAnd R
ACWherein one numerical exception and surpass the scope of regulation, then represent winding open circuit or short circuit.
By the real-time detection of above-mentioned asynchronous machine winding state, it is unusual to identify the motor winding fast by this measured value, in time stops machine operation, thereby reaches the purpose of protection motor, can be widely used in the emergency protection field of motor.
Embodiment of the present invention is illustrative, rather than determinate, so the present invention is not limited to the embodiment described in the embodiment.Other embodiments that every technical scheme according to the present invention draws belong to the scope of protection of the invention equally.
Claims (8)
1. the real-time detection circuit of the resistance of a motor winding, temperature, state, it is characterized in that: connected and composed by constant current source and on-off circuit, the constant current source control port links to each other with the outside constant current source control signal output port of control constant current source electric current output, the control port of on-off circuit links to each other with the switch controlling signal output port of outside, and the output port of on-off circuit is connected with three phase windings of asynchronous machine respectively;
Described on-off circuit comprises six switching tubes, the grid of six switching tubes is connected with the switch controlling signal of outside respectively, the source electrode of switching tube Q1 is connected with the drain electrode of switching tube Q4 and is connected to as output port U on the current output terminal mouth of the winding A of asynchronous machine and constant current source, the source electrode of switching tube Q2 is connected with the drain electrode of switching tube Q5 and is connected to as output port V on the winding B of asynchronous machine, the source electrode of switching tube Q3 is connected with the drain electrode of switching tube Q6 and is connected on the winding C of asynchronous machine switching tube Q4 as output port W, switching tube Q5, the source electrode of switching tube Q6 links to each other with power supply " common port ";
Described constant current source is by triode Q7, triode Q8, triode Q9, stabilivolt D1, resistance R 1, resistance R 2 connects and composes, outside constant current source control signal output port is connected on the emitter of triode Q7 by resistance R 2, the base stage of triode Q7 is connected with+5V power supply, the positive pole of the collector of triode Q7 and stabilivolt D1 and triode Q8, the base stage of triode Q9 is connected, the negative pole of stabilivolt D1 is connected with+15V power supply, triode Q8, the emitter of triode Q9 is connected with+15V power supply by resistance R 1, triode Q8, the collector of triode Q9 is connected to the output port U of on-off circuit, triode Q8 as the current output terminal mouth of constant current source by diode D2, the collector of triode Q9 also is connected with the winding A of asynchronous machine by diode D2 as the current output terminal mouth of constant current source.
2. the real-time detection circuit of the resistance of motor winding according to claim 1, temperature, state, it is characterized in that: described switching tube Q1-Q6 is frequency converter IGBT switching device.
3. the real-time detection circuit of the resistance of motor winding according to claim 1, temperature, state is characterized in that: the constant current source control signal of described outside and switch controlling signal are the digital signaling zero or 1 that microprocessor or digital circuit produce.
4. real-time detection method that utilizes real-time detection circuit as claimed in claim 1 to carry out the motor winding resistance value is characterized in that: may further comprise the steps:
Step 1: gauge tap pipe Q4 opens and makes constant current source output continuous current, gathers the pressure reduction V of constant current source delivery outlet
q
Step 2: gauge tap pipe Q5 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
1, this pressure reduction V
1=V
AB+ V
q, and then obtain the voltage V of motor winding A and B
ABAnd the resistance R of motor winding A and B
AB
Step 3: according to the characteristic of asynchronous machine, the resistance value of its three phase winding is basic identical, can obtain the resistance value R of motor three phase windings
A, R
B, R
C
5. the real-time detection method of motor winding resistance value according to claim 4, it is characterized in that: described gauge tap pipe Q4 deployment method is: switch controlling signal V1, V2, V3, V5, the V6 of outside are made as 0, the switch controlling signal V4 of outside is made as 1, then switching tube Q1, Q2, Q3, Q5, Q6 close, and switching tube Q4 opens; Described gauge tap pipe Q5 deployment method is: switch controlling signal V1, V2, V3, V4, the V6 of outside are made as 0, and outside switch controlling signal V5 is made as 1, and then switching tube Q1, Q2, Q3, Q4, Q6 close, and switching tube Q5 opens; The method of control constant current source output continuous current is: the constant current source control signal of outside is made as 0, then constant current source output continuous current; Described switch controlling signal V1, V2, V3, V4, V5, V6 be gauge tap pipe Q1, Q2, Q3, Q4, Q5, Q6 respectively.
6. real-time detection method that utilizes real-time detection circuit as claimed in claim 1 to carry out the motor winding temperature is characterized in that: may further comprise the steps:
Step 1: adopt the real-time detection method of motor winding resistance value as claimed in claim 4, calculate the resistance R of three phase windings under normal temperature or the known temperature
A, R
B, R
C
Step 2: adopt the real-time detection method of motor winding resistance value as claimed in claim 4, calculate the resistance R of three phase windings in real time
A, R
B, R
C
Step 3: the temperature that detects the motor winding according to following formula:
t
2=[R
2*(K+t
1)/R
1]-K
Wherein: the inverse of conductor resistance temperature coefficient when K represents 0 ℃, copper gets 235, and aluminium gets 228;
R
1Expression t
1℃ the time conductor resistance;
R
2Expression t
2℃ the time conductor resistance.
7. real-time detection method that utilizes real-time detection circuit as claimed in claim 1 to carry out the motor winding state is characterized in that: may further comprise the steps:
Step 1: gauge tap pipe Q4 opens and makes constant current source output continuous current, gathers the pressure reduction V of constant current source delivery outlet
q
Step 2: gauge tap pipe Q5 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
1, this pressure reduction V
1=V
AB+ V
q, and then obtain the voltage V of motor winding A and B
ABAnd the resistance R of motor winding A and B
AB
Step 3: gauge tap pipe Q6 opens and makes constant current source output continuous current, gathers the magnitude of voltage V of constant current source delivery outlet
2, and then obtain the voltage V of motor winding A and C
ACAnd the resistance R of motor winding A and C
AC
Step 4: according to the characteristic of asynchronous machine, work as R
ABAnd R
ACWherein one numerical exception and surpass the scope of regulation, then represent winding open circuit or short circuit.
8. the real-time detection method of motor winding state according to claim 7, it is characterized in that: described gauge tap pipe Q4 deployment method is: switch controlling signal V1, V2, V3, V5, the V6 of outside are made as 0, the switch controlling signal V4 of outside is made as 1, then switching tube Q1, Q2, Q3, Q5, Q6 close, and switching tube Q4 opens; Described gauge tap pipe Q5 deployment method is: switch controlling signal V1, V2, V3, V4, the V6 of outside are made as 0, and outside switch controlling signal V5 is made as 1, and then switching tube Q1, Q2, Q3, Q4, Q6 close, and switching tube Q5 opens; Described gauge tap pipe Q6 deployment method is: switch controlling signal V1, V2, V3, V4, the V5 of outside are made as 0, and outside switch controlling signal V6 is made as 1, and then switching tube Q1, Q2, Q3, Q4, Q5 close, and switching tube Q6 opens; The method of control constant current source output continuous current is: the constant current source control signal of outside is made as 0, then constant current source output continuous current; Described switch controlling signal V1, V2, V3, V4, V5, V6 be gauge tap pipe Q1, Q2, Q3, Q4, Q5, Q6 respectively.
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| CN103376362B (en) * | 2012-04-25 | 2016-12-14 | 珠海格力电器股份有限公司 | Reluctance motor winding resistance value and the detection method of commutation position and device |
| CN102645287B (en) * | 2012-05-15 | 2013-11-27 | 无锡艾柯威科技有限公司 | Motor winding temperature rise detection method |
| FR2990765B1 (en) * | 2012-05-16 | 2014-05-02 | Valeo Sys Controle Moteur Sas | METHOD FOR DETERMINING AT LEAST ONE STATE OF AN ELECTRIC CIRCUIT |
| CN102707152B (en) * | 2012-06-04 | 2014-10-08 | 西南交通大学 | On-line detecting device for resistance value of resistance winding machine |
| CN103217582B (en) * | 2013-04-10 | 2015-03-25 | 湖南主导科技发展有限公司 | System for detecting internal resistance of three-phase motor of electric water pump |
| CN104483041A (en) * | 2014-12-25 | 2015-04-01 | 珠海格力电器股份有限公司 | Temperature rise measurement method and device of coil winding |
| CN106404208B (en) * | 2016-09-08 | 2019-11-15 | 四川长虹空调有限公司 | A kind of method detecting electromotor winding temperature and the equipment comprising motor |
| CN107478348A (en) * | 2017-08-09 | 2017-12-15 | 中国标准化研究院 | Winding temperature rise detection means, device and method |
| KR102410944B1 (en) * | 2017-12-01 | 2022-06-20 | 현대자동차주식회사 | Apparatus and method for extracting impedance parameters of three-phase motor |
| CN111123095B (en) * | 2018-10-31 | 2022-09-27 | 佛山市顺德区美的电热电器制造有限公司 | Detection circuit, motor detection method, motor and household appliance |
| CN111679190A (en) * | 2020-06-29 | 2020-09-18 | 广州市微生物研究所 | Motor constant current test system and test method |
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| CN1510431A (en) * | 2002-12-25 | 2004-07-07 | 上海电动工具研究所 | Motor winding welding and coil resistance testing method and system |
| CN101330268A (en) * | 2008-04-25 | 2008-12-24 | 广州华南智信微系统有限公司 | Hexaphase brushless dc motor controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1510431A (en) * | 2002-12-25 | 2004-07-07 | 上海电动工具研究所 | Motor winding welding and coil resistance testing method and system |
| CN101330268A (en) * | 2008-04-25 | 2008-12-24 | 广州华南智信微系统有限公司 | Hexaphase brushless dc motor controller |
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Effective date of registration: 20220817 Address after: No. 3, Fumin Street, Lvyuan District, Changchun City, Jilin Province, 130013 Patentee after: CHANGCHUN XINGTAI LIFTING MACHINERY Co.,Ltd. Address before: Room 7-C-801, No. 15, Rongyuan Road, Huayuan Industrial Park, Nankai District, Tianjin 300384 Patentee before: TIANJIN TIANAN CRANE ELECTRIC EQUITMENT Co.,Ltd. |