CN108347206A - A kind of motor phase resistance measurement method - Google Patents
A kind of motor phase resistance measurement method Download PDFInfo
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- CN108347206A CN108347206A CN201711446818.6A CN201711446818A CN108347206A CN 108347206 A CN108347206 A CN 108347206A CN 201711446818 A CN201711446818 A CN 201711446818A CN 108347206 A CN108347206 A CN 108347206A
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- phase
- winding
- phase resistance
- current
- measurement method
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/16—Estimation of constants, e.g. the rotor time constant
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
A kind of motor phase resistance measurement method, including：It first by arbitrary two-phase winding parallel, then connects with another phase winding, then adds DC voltage U at new winding both ends, wait for a period of time, motor three-phase current is up to a stationary value, and input direct-current electric current I is measured with ammeter.Phase resistance value is calculated according to the DC voltage U of acquisition and DC current I, calculation formula is：Wherein, RA、RB、RCThe respectively resistance value of three-phase windings.This method can realize easy disposable measurement, do not need to determine the bind mode of three-phase windings, directly can directly be measured to the three-phase windings of different bind modes.
Description
Technical field
The present invention relates to a kind of external rotor permanent magnet brushless motors, more particularly to a kind of permanent magnetic brushless phase resistance measurement side
Method.
Background technology
Permanent magnetic brushless is simple in structure with its, reliable for operation, small, quality is small, is lost less, efficient, Yi Ji electricity
The shape and size of motivation can almost spread aerospace, national defence, industrial or agricultural life with equal remarkable advantages versatile and flexible, application field
The every field of production and daily life.Permanent magnetic brushless parameter has important influence for its application, is especially controlled in exploitation
When device processed, need to measure its phase resistance.Identification for permanent magnetic brushless phase resistance parameter, generally use instrument are examined
It surveys, thus increases manpower and cost.
Invention content
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of accurate phase resistance of easy to operate and result
Measurement method.
On the one hand, the embodiment of the present application provides a kind of motor phase resistance measurement method, including：Simultaneously by arbitrary two phase winding first
Connection, then connects with another phase winding, then adds DC voltage U at new winding both ends, wait for a period of time, motor three-phase current
It is up to a stationary value, input direct-current electric current I is measured with ammeter.
Phase resistance value is calculated according to the DC voltage U of acquisition and DC current I, calculation formula is：
Wherein, RA、RB、RCThe respectively resistance value of three-phase windings.
On the other hand, motor phase resistance measurement method provided by the embodiments of the present application is suitable for the connection of Y types and triangle connection
The three-phase windings of the different connection forms of two kinds of knot.
Motor phase resistance measurement method provided by the embodiments of the present application passes through based on after winding connection way theory deduction
Arbitrary two phase winding is connected to form a kind of general detection circuit.This method can realize easy disposable measurement, not need to determine
The bind mode of three-phase windings directly can directly measure the three-phase windings of different bind modes.
Description of the drawings
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 shows that measurement Y types provided by the embodiments of the present application are coupled the exemplary test circuit diagram of three-phase windings；
Fig. 2 shows the exemplary test circuit diagrams that measurement triangular form provided by the embodiments of the present application is coupled three-phase windings；
Fig. 3 shows that three-phase winding Y type is coupled circuit diagram；
Fig. 4 shows that three-phase windings triangular form is coupled circuit diagram；
Fig. 5 shows that three-phase windings triangular form is coupled equivalent circuit diagram.
Specific implementation mode
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, is illustrated only in attached drawing and invent relevant part.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Unmanned plane motor is external rotor permanent magnet brushless motor, and rotor is made of permanent magnet, and stator is by A/B/C three-phase windings
It constitutes.There are two types of bind modes, respectively Y types and triangular form to be coupled for A/B/C three-phase windings.
Referring to FIG. 3, when Y types are coupled, the phase resistance of A/B/C three-phases is just R, i.e. RAO=RBO=RCO=R.
With reference to figure 4 and Fig. 5, when triangular form is coupled, the equivalent phase resistance of A/B/C three-phases is justI.e.
For unmanned plane motor, three-phase windings bind mode, which compares, to be difficult to directly obtain, therefore the application
Embodiment, which provides one kind, can easily measure its equivalent phase resistance, the phase resistance of the bind mode without knowing winding
Measurement method.
It then can connect with another phase winding first by arbitrary two-phase winding parallel, then add direct current at new winding both ends
U is pressed, is waited for a period of time, motor three-phase current is up to a stationary value, and input direct-current electric current I is measured with ammeter.
If unmanned plane machine winding is Y type bind modes, it is as shown in Figure 1 to measure equivalent circuit.It can obtain：The calculation expression of phase resistance is：
Obviously, phase resistance at this time
If unmanned plane machine winding is triangular form bind mode, it is as shown in Figure 2 to measure equivalent circuit.It can by equivalent circuit
To obtain,
Then the equivalent phase resistance of triangular form connection is
To sum up, either Y types be coupled or triangular form be coupled, phase resistance can by be applied to port DC voltage and
Obtained DC current is measured by being calculated, formula is as follows：
Claims (6)
1. a kind of motor phase resistance measurement method, which is characterized in that the method includes：
Arbitrary two phase winding is connected, detection circuit is formed；
Obtain the electric current and voltage parameter of detection circuit after being powered；
Phase resistance value is calculated according to the electric current of acquisition and voltage parameter.
2. motor phase resistance measurement method according to claim 1, which is characterized in that the specific connection side of detection circuit
Formula is：
First winding and the second winding parallel, the parallel circuit of composition are connected with the tertiary winding again.
3. motor phase resistance measurement method according to claim 1, which is characterized in that detection circuit after the acquisition is powered
Electric current and voltage parameter include：
Lead to direct current at the detection circuit both ends, obtains DC voltage and DC current parameter.
4. motor phase resistance measurement method according to claim 3, which is characterized in that the acquisition DC voltage and direct current
Current parameters include：
Add DC voltage U at detection circuit both ends, after motor three-phase current reaches a stationary value, is measured and inputted with ammeter
DC current I.
5. motor phase resistance measurement method according to claim 4, which is characterized in that the electric current and electricity according to acquisition
Pressure parameter calculates phase resistance value：
Wherein, RA、RB、RCThe respectively resistance value of the first winding, the second winding and the tertiary winding.
6. claim 1-5 any one of them motor phase resistance measurement method is in the electricity for measuring Y types connection and triangle junction
The application of the phase resistance of machine three-phase windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446818.6A CN108347206A (en) | 2017-12-27 | 2017-12-27 | A kind of motor phase resistance measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446818.6A CN108347206A (en) | 2017-12-27 | 2017-12-27 | A kind of motor phase resistance measurement method |
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| Publication Number | Publication Date |
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| CN108347206A true CN108347206A (en) | 2018-07-31 |
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| CN201711446818.6A Pending CN108347206A (en) | 2017-12-27 | 2017-12-27 | A kind of motor phase resistance measurement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092868A (en) * | 2021-02-26 | 2021-07-09 | 广东电网有限责任公司广州供电局 | Resistance measuring method, device, system, equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354557A (en) * | 2001-11-28 | 2002-06-19 | 深圳安圣电气有限公司 | Non-synchronous motor parameter identification method |
| CN102111103A (en) * | 2010-04-22 | 2011-06-29 | 广东工业大学 | Alternating-current asynchronous motor frequency converter without speed sensor |
| CN102594253A (en) * | 2012-02-21 | 2012-07-18 | 常州联力自动化科技有限公司 | Parameter off-line identifying method and device of three-phase asynchronous motor |
-
2017
- 2017-12-27 CN CN201711446818.6A patent/CN108347206A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354557A (en) * | 2001-11-28 | 2002-06-19 | 深圳安圣电气有限公司 | Non-synchronous motor parameter identification method |
| CN102111103A (en) * | 2010-04-22 | 2011-06-29 | 广东工业大学 | Alternating-current asynchronous motor frequency converter without speed sensor |
| CN102594253A (en) * | 2012-02-21 | 2012-07-18 | 常州联力自动化科技有限公司 | Parameter off-line identifying method and device of three-phase asynchronous motor |
Non-Patent Citations (1)
| Title |
|---|
| 侯卓生等主编: "《电路基础》", 31 August 2011, 华中科技大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092868A (en) * | 2021-02-26 | 2021-07-09 | 广东电网有限责任公司广州供电局 | Resistance measuring method, device, system, equipment and storage medium |
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Application publication date: 20180731 |
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