CN207541164U - Electric vehicle motor controller three-phase current unbalance detection circuit - Google Patents
Electric vehicle motor controller three-phase current unbalance detection circuit Download PDFInfo
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- CN207541164U CN207541164U CN201720917428.1U CN201720917428U CN207541164U CN 207541164 U CN207541164 U CN 207541164U CN 201720917428 U CN201720917428 U CN 201720917428U CN 207541164 U CN207541164 U CN 207541164U
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Abstract
The utility model discloses a kind of electric vehicle motor controller three-phase current unbalance detection circuits, belong to integral new-energy passenger technical field, solve the problems, such as that traditional electric vehicle motor controller performance is difficult to be effectively ensured.Mainly include three-phase bleeder circuit, containing box filter circuit, three-phase current reverse phase summing circuit, upper limit comparator, lower limit comparator and indicating circuit.The utility model so that the performance of electric vehicle motor controller is effectively ensured, reliability, stability and safety during electric vehicle motor controller use is greatly improved, circuit design is simple and ingenious, it manufactures at low cost, practical value is high, can be widely applied to electric vehicle field of new energy technologies.
Description
Technical field
The utility model belongs to integral new-energy passenger technical field, specifically, more particularly to a kind of motor in electric automobile control
Device processed three-phase current unbalance detection circuit.
Background technology
Electric machine controller is one of important equipment indispensable in modern electrical machine speed regulating control and energy-conserving product.In recent years
Come, with the development of electric vehicle, the application of motor and electric machine controller in the car is more and more extensive.If motor three-phase electricity
Stream is uneven, and can bring reduces output power of motor, reduce power factor (PF), increase the harmful effects such as harmonic wave, especially electronic
The electric machine controller applied on automobile once breaks down, and will directly threaten the personal and property safety of passenger.To ensure electricity
Electrical automobile is reliable, stable with electric machine controller operating, and the realization of especially space vector pulse width modulation will in system design
Three-phase current feedback signal is used, therefore, correctly reliably detecting electric machine controller output current is particularly important.However,
Very few currently for technique research, traditional electric vehicle motor controller performance is difficult to be effectively ensured.
Invention content
The purpose of this utility model is in view of the deficienciess of the prior art, providing a kind of electric vehicle motor controller
With three-phase current unbalance detection circuit.
The utility model is achieved through the following technical solutions：
A kind of electric vehicle motor controller three-phase current unbalance detection circuit, the U phases of the electric machine controller are through U
Phase bleeder circuit module, U phases filter circuit module are electrically connected with the input terminal of three-phase current reverse phase summing circuit module；The V
Mutually it is electrically connected through V phase bleeder circuits module, V phases filter circuit module and the input terminal of the three-phase current reverse phase summing circuit module
It connects；The W phases are defeated with the three-phase current reverse phase summing circuit module through W phase bleeder circuits module, W phases filter circuit module
Enter end electrical connection；The output terminal of the three-phase current reverse phase summing circuit module is respectively compared with upper limit comparator module, lower limit
The input terminal electric signal connection of device module, by the three-phase electricity flow valuve after summation and the upper limit comparator module, lower limit comparator
The reference voltage of module compares, and when the sum of three-phase current is more than the up/down limit value of setting, is shone and shown by indicating circuit module
It is alert.
Preferably, the U phases bleeder circuit module, U phases filter circuit module include resistance R3, resistance R6, filter capacitor
C3, operational amplifier U1A, resistance R12；Described resistance R3 one end is electrically connected with U, on the one hand the other end is grounded through resistance R6,
On the other hand be connected with resistance R9 one end, the resistance R9 other ends on the one hand filtered capacitance C3 ground connection, on the other hand with fortune
The in-phase input end electrical connection of amplifier U1A is calculated, the inverting input of the operational amplifier U1A is connected with its output terminal, and
Its output terminal is also connected through resistance R12 with the three-phase current reverse phase summing circuit module input；The V phases bleeder circuit mould
Block, V phases filter circuit module include resistance R2, resistance R5, resistance R8, filter capacitor C2, operational amplifier U1B, resistance R11；
Described resistance R2 one end is electrically connected with V, and on the one hand the other end is grounded through resistance R5, be on the other hand connected with resistance R8 one end,
On the one hand filtered capacitance C2 is grounded the resistance R8 other ends, on the other hand electric with the in-phase input end of operational amplifier U1B
Connection, the inverting input of the operational amplifier U1B is connected with its output terminal, and its output terminal also through resistance R11 with it is described
Three-phase current reverse phase summing circuit module input is connected；The W phases bleeder circuit module, W phases filter circuit module include electricity
Hinder R1, resistance R4, resistance R7, filter capacitor C1, operational amplifier U1C, resistance R10；Described resistance R1 one end is electrically connected with W phases
It connects, on the one hand the other end is grounded through resistance R4, be on the other hand connected with resistance R7 one end, on the one hand the resistance R7 other ends pass through
Filter capacitor C1 is grounded, and on the other hand the in-phase input end with operational amplifier U1C is electrically connected, the operational amplifier U1C's
Inverting input is connected with its output terminal, and its output terminal is also through resistance R10 and the three-phase current reverse phase summing circuit module
Input terminal is connected；The operational amplifier U1A, operational amplifier U1B, operational amplifier U1C positive power source terminal access VCC,
Negative supply is grounded.
Preferably, the three-phase current reverse phase summing circuit module includes operational amplifier U1D, is connected on the operation and puts
The inverting input of resistance R14, the operational amplifier U1D between the inverting input and its output terminal of big device U1D also with U
The output terminal electrical connection of phase bleeder circuit module, V phase bleeder circuits module, W phase bleeder circuit modules；The operational amplifier
The in-phase input end of U1D is grounded through resistance R14；The output terminal of the operational amplifier U1D and upper limit comparator module, lower limit ratio
Input terminal electric signal compared with device module connects.
Preferably, the upper limit comparator module includes operational amplifier U2A, resistance R15, the lower limit comparator module
Inverting input including operational amplifier U2B, resistance R16, the operational amplifier U2A is anti-through resistance R15 and three-phase current
Phase summing circuit module output terminal is electrically connected, and the in-phase input end of the operational amplifier U2B is anti-through resistance R14 and three-phase current
Phase summing circuit module output terminal is electrically connected, and the in-phase input end of the operational amplifier U2B is anti-through resistance R14 and three-phase current
Phase summing circuit module output terminal be electrically connected, the operational amplifier U2A, operational amplifier U2B output terminal with the finger
Show circuit module be electrically connected, the operational amplifier U2A, operational amplifier U2B positive power source terminal access VCC, negative supply is equal
Ground connection.
Preferably, the indicating circuit module includes light emitting diode D1, resistance R17, the moon of the light emitting diode D1
Output terminal extremely with the upper limit comparator module, lower limit comparator module is electrically connected, the anode of the light emitting diode D1
It is electrically connected through resistance R17 with VCC.
Compared with prior art, the beneficial effects of the utility model are：
The utility model so that the performance of electric vehicle motor controller is effectively ensured, and electronic vapour is greatly improved
Reliability, stability and safety during vehicle motor controller use, circuit design is simple and ingenious, and manufacture is at low cost,
Practical value is high, can be widely applied to electric vehicle field of new energy technologies.
Description of the drawings
Fig. 1 is the utility model circuit theory system block diagram；
Fig. 2 is the utility model circuit diagram.
In figure：1.U phase bleeder circuit modules；2.U phase filter circuit modules；3. three-phase current reverse phase summing circuit module；
4.V phase bleeder circuit modules；5.V phase filter circuit modules；6.W phase bleeder circuit modules；7.W phase filter circuit modules；On 8.
Limit comparator module；9. lower limit comparator module；10. indicating circuit module.
Specific embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings：
A kind of electric vehicle motor controller three-phase current unbalance detection circuit, the U phases of the electric machine controller are through U
Phase bleeder circuit module 1, U phases filter circuit module 2 are electrically connected with the input terminal of three-phase current reverse phase summing circuit module 3；Institute
V phases are stated through V phase bleeder circuits module 4, V phases filter circuit module 5 and the input of the three-phase current reverse phase summing circuit module 3
End electrical connection；The W phases are through W phase bleeder circuits module 6, W phases filter circuit module 7 and the three-phase current reverse phase summing circuit
The input terminal electrical connection of module 3；The output terminal of the three-phase current reverse phase summing circuit module 3 respectively with upper limit comparator module
8th, the input terminal electric signal connection of lower limit comparator module 9, by the three-phase electricity flow valuve after summation and the upper limit comparator module
8th, the reference voltage of lower limit comparator module 9 compares, when the sum of three-phase current is more than the up/down limit value of setting, by instruction electricity
10 luminous warning of road module.
Preferably, the U phases bleeder circuit module 1, U phases filter circuit module 2 include resistance R3, resistance R6, filtered electrical
Hold C3, operational amplifier U1A, resistance R12；Described resistance R3 one end is electrically connected with U, on the one hand the other end connects through resistance R6
On the other hand ground is connected with resistance R9 one end, the resistance R9 other ends on the one hand filtered capacitance C3 ground connection, on the other hand with
The in-phase input end electrical connection of operational amplifier U1A, the inverting input of the operational amplifier U1A are connected with its output terminal,
And its output terminal is also connected through resistance R12 with 3 input terminal of three-phase current reverse phase summing circuit module；The V phases divide electricity
Road module 4, V phases filter circuit module 5 include resistance R2, resistance R5, resistance R8, filter capacitor C2, operational amplifier U1B, electricity
Hinder R11；Described resistance R2 one end is electrically connected with V, the other end on the one hand through resistance R5 be grounded, on the other hand with resistance R8 one end
Be connected, the resistance R8 other ends on the one hand filtered capacitance C2 ground connection, on the other hand with the homophase input of operational amplifier U1B
End electrical connection, the inverting input of the operational amplifier U1B is connected with its output terminal, and its output terminal also through resistance R11 and
3 input terminal of three-phase current reverse phase summing circuit module is connected；The W phases bleeder circuit module 6, W phases filter circuit module 7
Including resistance R1, resistance R4, resistance R7, filter capacitor C1, operational amplifier U1C, resistance R10；Described resistance R1 one end and W phases
On the one hand electrical connection, the other end are grounded through resistance R4, are on the other hand connected with resistance R7 one end, one side of the resistance R7 other ends
The filtered capacitance C1 ground connection in face, on the other hand the in-phase input end with operational amplifier U1C is electrically connected, the operational amplifier
The inverting input of U1C is connected with its output terminal, and its output terminal is also through resistance R10 and the three-phase current reverse phase summing circuit
3 input terminal of module is connected；The operational amplifier U1A, operational amplifier U1B, operational amplifier U1C positive power source terminal access
VCC, negative supply are grounded.
Preferably, the three-phase current reverse phase summing circuit module 3 includes operational amplifier U1D, is connected on the operation
Resistance R14 between the inverting input of amplifier U1D and its output terminal, the inverting input of the operational amplifier U1D is also
It is electrically connected with the output terminal of U phase bleeder circuits module 1, V phase bleeder circuits module 4, W phase bleeder circuits module 6；The operation is put
The in-phase input end of big device U1D is grounded through resistance R14；The output terminal and upper limit comparator module 8 of the operational amplifier U1D,
The input terminal electric signal connection of lower limit comparator module 9.
Preferably, the upper limit comparator module 8 includes operational amplifier U2A, resistance R15, the lower limit comparator mould
Block 9 includes operational amplifier U2B, resistance R16, and the inverting input of the operational amplifier U2A is through resistance R15 and three-phase current
3 output terminal of reverse phase summing circuit module is electrically connected, and the in-phase input end of the operational amplifier U2B is through resistance R14 and three-phase electricity
The 3 output terminal electrical connection of reverse phase summing circuit module is flowed, the in-phase input end of the operational amplifier U2B is through resistance R14 and three-phase
3 output terminal of anti-phase summing circuit module be electrically connected, the operational amplifier U2A, operational amplifier U2B output terminal with
The indicating circuit module 3 is electrically connected, the operational amplifier U2A, operational amplifier U2B positive power source terminal access VCC, bear
Power supply is grounded.
Preferably, the indicating circuit module 10 includes light emitting diode D1, resistance R17, the light emitting diode D1's
Cathode terminal is electrically connected with the output terminal of the 8 lower limit comparator module 9 of upper limit comparator module, the sun of the light emitting diode D1
Pole is electrically connected through resistance R17 with VCC.
The utility model is compared by sensor bleeder circuit, three-phase filter circuit, three-phase current reverse phase summing circuit, the upper limit
Device circuit, lower limit comparator circuit and light emitting diode indicating circuit composition.Three-phase current is through current sensor sampling partial pressure, filter
Wave summation after with upper limit comparison circuit, lower limit comparison circuit reference voltage compared with.When the sum of three-phase current be more than design it is upper/
During lower limiting value, circuit of LED luminous warning.The utility model so that the performance of electric vehicle motor controller is had
Effect ensures, reliability, stability and safety during electric vehicle motor controller use is greatly improved, circuit is set
Count simple and ingenious, manufacture is at low cost, and practical value is high, can be widely applied to electric vehicle field of new energy technologies.
In conclusion the only preferred embodiment of the utility model, is not used for limiting the utility model implementation
Range, the equivalent change carried out by all shapes according to described in the utility model claims range, construction, feature and spirit is with repairing
Decorations, should all be included in the right of the utility model.
Claims (5)
1. a kind of electric vehicle motor controller three-phase current unbalance detection circuit, it is characterised in that：The U of electric machine controller
Mutually it is electrically connected through U phase bleeder circuits module, U phases filter circuit module with the input terminal of three-phase current reverse phase summing circuit module；V
Mutually it is electrically connected through V phase bleeder circuits module, V phases filter circuit module and the input terminal of the three-phase current reverse phase summing circuit module
It connects；W phases are through W phase bleeder circuits module, W phases filter circuit module and the input terminal of the three-phase current reverse phase summing circuit module
Electrical connection；The output terminal of the three-phase current reverse phase summing circuit module respectively with upper limit comparator module, lower limit comparator mould
The input terminal electric signal connection of block, by the three-phase electricity flow valuve after summation and the upper limit comparator module, lower limit comparator module
Reference voltage compare, when the sum of three-phase current be more than setting up/down limit value when, by indicating circuit module luminous warning.
2. electric vehicle motor controller according to claim 1 three-phase current unbalance detection circuit, feature exist
In：The U phases bleeder circuit module, U phases filter circuit module include resistance R3, resistance R6, filter capacitor C3, operational amplifier
U1A, resistance R12；Described resistance R3 one end is electrically connected with U, on the one hand the other end is grounded through resistance R6, another aspect and resistance
R9 one end is connected, and on the one hand filtered capacitance C3 is grounded the resistance R9 other ends, on the other hand same with operational amplifier U1A
Phase input terminal is electrically connected, and the inverting input of the operational amplifier U1A is connected with its output terminal, and its output terminal is also through resistance
R12 is connected with the three-phase current reverse phase summing circuit module input；The V phases bleeder circuit module, V phase filter circuit moulds
Block includes resistance R2, resistance R5, resistance R8, filter capacitor C2, operational amplifier U1B, resistance R11；Described resistance R2 one end and V
It is electrically connected, on the one hand the other end is grounded through resistance R5, be on the other hand connected with resistance R8 one end, the resistance R8 other ends one
The filtered capacitance C2 ground connection of aspect, on the other hand the in-phase input end with operational amplifier U1B is electrically connected, the operational amplifier
The inverting input of U1B is connected with its output terminal, and its output terminal is also through resistance R11 and the three-phase current reverse phase summing circuit
Module input is connected；The W phases bleeder circuit module, W phases filter circuit module include resistance R1, resistance R4, resistance R7, filter
Wave capacitance C1, operational amplifier U1C, resistance R10；Described resistance R1 one end is electrically connected with W, and the other end is on the one hand through resistance R4
Ground connection, is on the other hand connected with resistance R7 one end, and on the one hand filtered capacitance C1 is grounded the resistance R7 other ends, on the other hand
It is electrically connected with the in-phase input end of operational amplifier U1C, the inverting input of the operational amplifier U1C and its output terminal phase
Even, and its output terminal is also connected through resistance R10 with the three-phase current reverse phase summing circuit module input；The operation amplifier
Device U1A, operational amplifier U1B, operational amplifier U1C positive power source terminal access VCC, negative supply is grounded.
3. electric vehicle motor controller according to claim 1 or 2 three-phase current unbalance detection circuit, feature
It is：The three-phase current reverse phase summing circuit module includes operational amplifier U1D, is connected on the operational amplifier U1D's
Resistance R14 between inverting input and its output terminal, the inverting input of the operational amplifier U1D also divide electricity with U phases
The output terminal electrical connection of road module, V phase bleeder circuits module, W phase bleeder circuit modules；The same phase of the operational amplifier U1D
Input terminal is grounded through resistance R14；The output terminal of the operational amplifier U1D and upper limit comparator module, lower limit comparator module
Input terminal electric signal connection.
4. electric vehicle motor controller according to claim 3 three-phase current unbalance detection circuit, feature exist
In：The upper limit comparator module includes operational amplifier U2A, resistance R15, and the lower limit comparator module includes operation amplifier
Device U2B, resistance R16, the operational amplifier U2A inverting input through resistance R15 and three-phase current reverse phase summing circuit mould
Block output terminal is electrically connected, and the in-phase input end of the operational amplifier U2B is through resistance R14 and three-phase current reverse phase summing circuit mould
Block output terminal is electrically connected, and the operational amplifier U2A, the output terminal of operational amplifier U2B are electric with the indicating circuit module
Connection, the operational amplifier U2A, operational amplifier U2B positive power source terminal access VCC, negative supply is grounded.
5. electric vehicle motor controller according to claim 4 three-phase current unbalance detection circuit, feature exist
In：The indicating circuit module include light emitting diode D1, resistance R17, the cathode terminal of the light emitting diode D1 with it is described on
Limit the output terminal electrical connection of comparator module, lower limit comparator module, the anode of the light emitting diode D1 through resistance R17 with
VCC is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720917428.1U CN207541164U (en) | 2017-07-26 | 2017-07-26 | Electric vehicle motor controller three-phase current unbalance detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720917428.1U CN207541164U (en) | 2017-07-26 | 2017-07-26 | Electric vehicle motor controller three-phase current unbalance detection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN207541164U true CN207541164U (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720917428.1U Expired - Fee Related CN207541164U (en) | 2017-07-26 | 2017-07-26 | Electric vehicle motor controller three-phase current unbalance detection circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982952A (en) * | 2018-09-04 | 2018-12-11 | 广州小鹏汽车科技有限公司 | A kind of DC permanent magnet synchronous motor phase current sensing and balanced checking circuit and DC permanent magnet synchronous motor |
| CN109342944A (en) * | 2018-11-21 | 2019-02-15 | 深圳和而泰智能控制股份有限公司 | A kind of electric machines test method and apparatus |
| CN109521284A (en) * | 2018-10-24 | 2019-03-26 | 杜育宽 | Three-phase electricity power failure detection method based on dual factors algorithm |
| CN117434357A (en) * | 2023-12-20 | 2024-01-23 | 天津航空机电有限公司 | Angular load balance detection circuit |
-
2017
- 2017-07-26 CN CN201720917428.1U patent/CN207541164U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982952A (en) * | 2018-09-04 | 2018-12-11 | 广州小鹏汽车科技有限公司 | A kind of DC permanent magnet synchronous motor phase current sensing and balanced checking circuit and DC permanent magnet synchronous motor |
| CN108982952B (en) * | 2018-09-04 | 2023-08-29 | 广州小鹏汽车科技有限公司 | Phase current detection and balance verification circuit of direct-current permanent magnet synchronous motor and direct-current permanent magnet synchronous motor |
| CN109521284A (en) * | 2018-10-24 | 2019-03-26 | 杜育宽 | Three-phase electricity power failure detection method based on dual factors algorithm |
| CN109342944A (en) * | 2018-11-21 | 2019-02-15 | 深圳和而泰智能控制股份有限公司 | A kind of electric machines test method and apparatus |
| CN117434357A (en) * | 2023-12-20 | 2024-01-23 | 天津航空机电有限公司 | Angular load balance detection circuit |
| CN117434357B (en) * | 2023-12-20 | 2024-04-09 | 天津航空机电有限公司 | Angular load balance detection circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180626 Termination date: 20190726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |