CN205581213U - PMSM's inductance measuring device - Google Patents
PMSM's inductance measuring device Download PDFInfo
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- CN205581213U CN205581213U CN201620180442.3U CN201620180442U CN205581213U CN 205581213 U CN205581213 U CN 205581213U CN 201620180442 U CN201620180442 U CN 201620180442U CN 205581213 U CN205581213 U CN 205581213U
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- phase
- brachium pontis
- synchronous motor
- bridge
- permagnetic synchronous
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- 230000001360 synchronised effect Effects 0.000 claims description 55
- 238000005259 measurement Methods 0.000 claims description 22
- 238000004804 winding Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012857 repacking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a PMSM's inductance measuring device, it measures inductance safety convenience, and just the cost is lower. The device includes: DC power supply, DC power supply have positive terminal and negative pole end, machine controller, machine controller includes three -phase inverting bridge and control chip, three -phase inverting bridge includes three -phase bridge arm, three -phase output terminal, first input end and second input, the first input end links to each other with the positive terminal, the second input links to each other with the negative pole end, three -phase output terminal links to each other with PMSM's three phase terminals, wherein, control chip controls through the switching element to among the three -phase bridge arm so that to positive terminal and the negative pole end in one of arbitrary double -phase terminal short circuit in three phase terminals, and during the surplus phase terminal short circuit in three phase terminals is held to positive terminal and negative pole another, voltage electric current collection module, line voltage and phase electric current directaxis inductance and the quadrature axis inductance in order to calculate PMSM of voltage electric current collection module through gathering PMSM.
Description
Technical field
This utility model relates to technical field of motors, particularly to the inductance measurement device of a kind of permagnetic synchronous motor.
Background technology
Permagnetic synchronous motor has the advantages such as high efficiency, high torque ratio of inertias, high-energy-density and energy-conserving and environment-protective.Same at permanent magnetism
During walking motor and the exploitation of relevant device thereof and using, often need to obtain the d-axis inductance of permagnetic synchronous motor and quadrature axis electricity
Sense.
At present, the high-tension pulse generally utilizing direct current pulse power source to provide brings d-axis inductance and the quadrature axis measuring permagnetic synchronous motor
Inductance.During reality is measured, needing first artificially to reequip circuit, two phase terminals made in motor in three-phase terminal carry out short circuit,
Therefore measure process relatively complicated, but also there is Electrical Safety hidden danger.Additionally, direct current pulse power source often needs additionally to purchase,
Measure cost the highest.
Utility model content
One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, this practicality is new
The purpose of type is to propose the inductance measurement device of a kind of permagnetic synchronous motor, it is possible to safely and conveniently in permagnetic synchronous motor
Inductance measure, simultaneously measure cost relatively low.
The inductance measurement device of the permagnetic synchronous motor according to this utility model embodiment, including: DC source, described direct current
Power supply has positive terminal and negative pole end；Electric machine controller, described electric machine controller includes three phase inverter bridge and control chip, institute
State three phase inverter bridge and include three-phase brachium pontis, three-phase output end, first input end and the second input, described first input end with
Described positive terminal is connected, and described second input is connected with described negative pole end, described three-phase output end and permagnetic synchronous motor
Three-phase terminal is connected, and wherein, described control chip is described by being controlled such that the switching device in described three-phase brachium pontis
Any two phase terminals in three-phase terminal are shorted in described positive terminal and described negative pole end and described three-phase terminal
Residue one phase terminal be shorted in described positive terminal and described negative pole end another；Voltage x current acquisition module, described electricity
Current voltage acquisition module is by gathering the line voltage of described permagnetic synchronous motor and phase current to calculate described permagnetic synchronous motor
D-axis inductance and quadrature axis inductance.
According to the inductance measurement device of permagnetic synchronous motor of the present utility model, by electric machine controller the three of three phase inverter bridge
Phase output terminal is connected with the three-phase terminal of permagnetic synchronous motor respectively, and is controlled the switching device of three-phase brachium pontis by control chip,
So that two phase terminals in three-phase terminal are shorted to one end of DC source, and make the residue one phase terminal short circuit in three-phase terminal
To the other end of DC source, then by voltage x current acquisition module gather the line voltage of permagnetic synchronous motor and phase current with
Calculate d-axis inductance and the quadrature axis inductance of permagnetic synchronous motor.Thereby, it is possible to easily the inductance in permagnetic synchronous motor is entered
Row is measured, it is to avoid the potential safety hazard that artificial repacking circuit brings, and improves safety, is easier to obtain simultaneously as make use of
The electric machine controller obtained, also can reduce measurement cost.
It addition, can also have the most attached according to the inductance measurement device of the permagnetic synchronous motor of this utility model above-described embodiment
The technical characteristic added:
According to an embodiment of the present utility model, described three-phase brachium pontis includes the first brachium pontis, the second brachium pontis and the 3rd brachium pontis,
Described first brachium pontis, the second brachium pontis and the 3rd brachium pontis all include switch on the bridge device and the bridge switch device of correspondence, described the
Switch on the bridge device in the primary nodal point between switch on the bridge device and bridge switch device in one brachium pontis, described second brachium pontis
Between secondary nodal point between part and bridge switch device, switch on the bridge device and the bridge switch device in described 3rd brachium pontis
The 3rd node constitute described three-phase output end.
Further, described primary nodal point is connected with the A phase terminal in described three-phase terminal, described secondary nodal point and described three
B phase terminal in phase terminal is connected, and described 3rd node is connected with the C phase terminal in described three-phase terminal, wherein, described
Control chip controls the switch on the bridge device in described first brachium pontis when the rotor of described permagnetic synchronous motor is in predeterminated position
Bridge switch device in part, described second brachium pontis and the 3rd brachium pontis simultaneously turns on, and controls the lower bridge in described first brachium pontis
Switch on the bridge device in switching device, described second brachium pontis and the 3rd brachium pontis simultaneously turns off, described voltage x current acquisition module
By gathering the line voltage V of described permagnetic synchronous motorabWith phase current iaTo calculate the d-axis inductance of described permagnetic synchronous motor
With quadrature axis inductance.
According to an embodiment of the present utility model, the three-phase windings in described permagnetic synchronous motor uses star-like connected mode.
Specifically, described switch on the bridge device and bridge switch device be IGBT (Insulated Gate Bipolar Transistor,
Insulated gate bipolar transistor).
Specifically, described predeterminated position is the zero position of described rotor.
According to an embodiment of the present utility model, described voltage x current acquisition module is oscillograph.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the inductance measurement device according to permagnetic synchronous motor of the present utility model；
Fig. 2 is the structural representation of the inductance measurement device of the permagnetic synchronous motor according to one specific embodiment of this utility model.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to limit of the present utility model
System.
The inductance measurement device of permagnetic synchronous motor of the present utility model is described below in conjunction with the accompanying drawings.
Fig. 1 is the structured flowchart of the inductance measurement device according to permagnetic synchronous motor of the present utility model.
As it is shown in figure 1, the inductance measurement device of permagnetic synchronous motor of the present utility model, including: DC source 10, motor
Controller 20 and voltage x current acquisition module 30.
Wherein, DC source 10 has positive terminal and negative pole end.In this utility model, permagnetic synchronous motor can have subsidiary
Electric machine controller 20.Electric machine controller 20 can include three phase inverter bridge and control chip, and three phase inverter bridge includes three-phase bridge
Arm, three-phase output end, first input end and the second input, first input end is connected with positive terminal, and the second input is with negative
Extreme connected, three-phase output end is connected with the three-phase terminal of permagnetic synchronous motor, and wherein, control chip is by three-phase brachium pontis
In any two phase terminals of being controlled such that in three-phase terminal of switching device be shorted to positive terminal and in negative pole end,
And residue one phase terminal in three-phase terminal is shorted to another in positive terminal and negative pole end.Voltage x current acquisition module 30 leads to
Cross d-axis inductance and the quadrature axis inductance gathering the line voltage of permagnetic synchronous motor and phase current to calculate permagnetic synchronous motor.
Fig. 2 is the structural representation of the inductance measurement device of the permagnetic synchronous motor according to one specific embodiment of this utility model.
As in figure 2 it is shown, in electric machine controller 20, three-phase brachium pontis can include the first brachium pontis B1, the second brachium pontis B2 and the 3rd brachium pontis
B3, the first brachium pontis B1, the second brachium pontis B2 and the 3rd brachium pontis B3 may each comprise switch on the bridge device and the bridge switch of correspondence
Device.In this utility model, switch on the bridge device and bridge switch device can be IGBT.Wherein, the first brachium pontis B1
In switch on the bridge device and bridge switch device between primary nodal point N1, switch on the bridge device in the second brachium pontis B2 with
Between secondary nodal point N2 between bridge switch device, switch on the bridge device and the bridge switch device in the 3rd brachium pontis B3
3rd node N3 constitutes three-phase output end.
In this utility model, the three-phase windings in permagnetic synchronous motor can use star-like connected mode.
In this utility model, as in figure 2 it is shown, primary nodal point N1 can be connected with the A phase terminal in three-phase terminal, second
Node N2 can be connected with the B phase terminal in three-phase terminal, and the 3rd node N3 can be connected with the C phase terminal in three-phase terminal,
Wherein, control chip can control the switch on the bridge device in the first brachium pontis B1 when the rotor of permagnetic synchronous motor is in predeterminated position
Bridge switch device in part, the second brachium pontis B2 and the 3rd brachium pontis B3 simultaneously turns on, and under controlling in the first brachium pontis B1
Switch on the bridge device in bridge switch device, the second brachium pontis B2 and the 3rd brachium pontis B3 simultaneously turns off, thus, and can be same at permanent magnetism
Step motor produces DC pulse voltage.In this utility model, predeterminated position can be the zero position of rotor.New in this practicality
In type, the rotor of permagnetic synchronous motor can be adjusted to zero position, after i.e. d-axis direction and quadrature axis direction coincide, by rotor
Fixing, then control conducting and the shutoff of related switch device.
Then voltage x current acquisition module 30 (not shown in Fig. 2) can be by gathering the line voltage V of permagnetic synchronous motorabWith
Phase current iaTo calculate d-axis inductance and the quadrature axis inductance of permagnetic synchronous motor, wherein, voltage x current acquisition module 30 can be to show
Ripple device.
According to the inductance measurement device of permagnetic synchronous motor of the present utility model, by electric machine controller the three of three phase inverter bridge
Phase output terminal is connected with the three-phase terminal of permagnetic synchronous motor respectively, and is controlled the switching device of three-phase brachium pontis by control chip,
So that two phase terminals in three-phase terminal are shorted to one end of DC source, and make the residue one phase terminal short circuit in three-phase terminal
To the other end of DC source, then by voltage x current acquisition module gather the line voltage of permagnetic synchronous motor and phase current with
Calculate d-axis inductance and the quadrature axis inductance of permagnetic synchronous motor.Thereby, it is possible to easily the inductance in permagnetic synchronous motor is entered
Row is measured, it is to avoid the potential safety hazard that artificial repacking circuit brings, and improves safety, is easier to obtain simultaneously as make use of
The electric machine controller obtained, also can reduce measurement cost.
In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ",
Orientation or the position relationship of the instruction such as " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " are based on accompanying drawing
Shown orientation or position relationship, be for only for ease of description this utility model and simplify description rather than instruction or hint institute
The device that refers to or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this reality
With novel restriction.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or
The implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or hidden
One or more this feature are included containing ground.In description of the present utility model, " multiple " be meant that two or two with
On, unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing "
Should be interpreted broadly Deng term, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of individual element internal or the interaction relationship of two elements.For the ordinary skill in the art, Ke Yigen
Above-mentioned term concrete meaning in this utility model is understood according to concrete condition.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can
Being that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, the
One feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper,
Or it is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " under
Face " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than the
Two features.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " concrete example ",
Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes
It is contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be
Any one or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, this area
Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out
In conjunction with and combination.
Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as restriction of the present utility model, those of ordinary skill in the art can in the range of this utility model
Above-described embodiment be changed, revise, to replace and modification.
Claims (7)
1. the inductance measurement device of a permagnetic synchronous motor, it is characterised in that including:
DC source, described DC source has positive terminal and negative pole end；
Electric machine controller, described electric machine controller includes that three phase inverter bridge and control chip, described three phase inverter bridge include three-phase
Brachium pontis, three-phase output end, first input end and the second input, described first input end is connected with described positive terminal, described
Second input is connected with described negative pole end, and described three-phase output end is connected with the three-phase terminal of permagnetic synchronous motor, wherein,
Described control chip is the most biphase by be controlled such that the switching device in described three-phase brachium pontis in described three-phase terminal
Terminal is shorted to described positive terminal and is shorted to residue one phase terminal in described negative pole end and described three-phase terminal
Another in described positive terminal and described negative pole end；
Voltage x current acquisition module, described voltage x current acquisition module is by gathering line voltage and the phase of described permagnetic synchronous motor
Electric current is to calculate d-axis inductance and the quadrature axis inductance of described permagnetic synchronous motor.
The inductance measurement device of permagnetic synchronous motor the most according to claim 1, it is characterised in that described three-phase brachium pontis
Including the first brachium pontis, the second brachium pontis and the 3rd brachium pontis, described first brachium pontis, the second brachium pontis and the 3rd brachium pontis all include correspondence
Switch on the bridge device and bridge switch device, between switch on the bridge device and the bridge switch device in described first brachium pontis
The secondary nodal point between switch on the bridge device and bridge switch device in one node, described second brachium pontis, described 3rd brachium pontis
In switch on the bridge device and bridge switch device between the 3rd node constitute described three-phase output end.
The inductance measurement device of permagnetic synchronous motor the most according to claim 2, it is characterised in that described primary nodal point
Being connected with the A phase terminal in described three-phase terminal, described secondary nodal point is connected with the B phase terminal in described three-phase terminal, institute
Stating the 3rd node to be connected with the C phase terminal in described three-phase terminal, wherein, described control chip is at described permagnetic synchronous motor
Rotor control in the switch on the bridge device in described first brachium pontis, described second brachium pontis and the 3rd brachium pontis when being in predeterminated position
Bridge switch device simultaneously turn on, and control the bridge switch device in described first brachium pontis, described second brachium pontis and the 3rd
Switch on the bridge device in brachium pontis simultaneously turns off, and described voltage x current acquisition module is by gathering the line of described permagnetic synchronous motor
Voltage VabWith phase current iaTo calculate d-axis inductance and the quadrature axis inductance of described permagnetic synchronous motor.
4. according to the inductance measurement device of the permagnetic synchronous motor according to any one of claim 1-3, it is characterised in that institute
State the three-phase windings in permagnetic synchronous motor and use star-like connected mode.
The inductance measurement device of permagnetic synchronous motor the most according to claim 2, it is characterised in that described switch on the bridge
Device and bridge switch device are IGBT.
The inductance measurement device of permagnetic synchronous motor the most according to claim 3, it is characterised in that described predeterminated position
Zero position for described rotor.
The inductance measurement device of permagnetic synchronous motor the most according to claim 1, it is characterised in that it is characterized in that,
Described voltage x current acquisition module is oscillograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620180442.3U CN205581213U (en) | 2016-03-09 | 2016-03-09 | PMSM's inductance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620180442.3U CN205581213U (en) | 2016-03-09 | 2016-03-09 | PMSM's inductance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205581213U true CN205581213U (en) | 2016-09-14 |
Family
ID=56869064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620180442.3U Expired - Fee Related CN205581213U (en) | 2016-03-09 | 2016-03-09 | PMSM's inductance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205581213U (en) |
-
2016
- 2016-03-09 CN CN201620180442.3U patent/CN205581213U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Inductance measuring device for permanent magnet synchronous motor Effective date of registration: 20211213 Granted publication date: 20160914 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231201 Granted publication date: 20160914 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |