CN108614151A - A kind of measurement method of vehicle motor controller efficiency, apparatus and system - Google Patents
A kind of measurement method of vehicle motor controller efficiency, apparatus and system Download PDFInfo
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- CN108614151A CN108614151A CN201810297009.1A CN201810297009A CN108614151A CN 108614151 A CN108614151 A CN 108614151A CN 201810297009 A CN201810297009 A CN 201810297009A CN 108614151 A CN108614151 A CN 108614151A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
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Abstract
The present invention relates to a kind of measurement methods of vehicle motor controller efficiency, including：According to operating status of the motor under default operating mode, the input power of tested motor controller is obtained；Obtain the energy loss power of the tested motor controller；According to the input power and the energy loss power, the output power of the tested motor controller is obtained；According to the output power and the input power, the tested motor controller efficiency is obtained.The method that the embodiment of the present invention is provided considers automobile motor running environment and operating mode and is compared with traditional measurement method, and the electric machine controller efficiency value accuracy tested is high, fluctuation is small；It is compared with calorimetry method, testing equipment is simple in structure, can effectively reduce test period, reduces experimentation cost.
Description
Technical field
The present invention relates to the correlative technology fields of automobile drive motor controller efficiency test, exactly, are related to one kind
The measurement method of vehicle motor controller efficiency, apparatus and system.
Background technology
The efficiency test of electric machine controller is an important test event of electric machine controller experiment.
The method of electric machine controller efficiency test has electrical measurement method and calorimetry method, and research both at home and abroad is concentrated mainly on
To in terms of the research of calorimetry method, but due to calorimetry can only stable testing state when electric machine controller efficiency, and survey
It is long the time required to examination, therefore this method is not particularly suited for the momentary efficiency of measurement motor controller.For convenience, general at present
Method using electrical measurement method as electric machine controller efficiency test, method be by measurement motor controller input terminal and
The voltage and current of output end is obtained the electrical power of input terminal and output end by power analyzer, and then is calculated using formula
Obtain the efficiency of electric machine controller.Electrical measurement method is feasible in theory, but during carrying out actual tests, due to
, there is efficiency test precision to a certain extent in a variety of known or unknown factor interference and the presence of measurement error
Not high problem, there are no the electrical measurement methods of more accurately measurement motor controller efficiency, this is electric machine controller efficiency
The common problem of test.
In the latest 20 years, electric vehicle engineering obtains fast development, with the enhancing of people's environmental consciousness and to electronic
The approval of automotive engineering, electric vehicle worldwide gradually start to popularize.Automobile drive motor controller is as electronic vapour
One of kernel component of vehicle plays very important effect in electric vehicle, it is directly related to the operation of electric vehicle
Efficiency influences the continual mileage of electric vehicle, therefore the accurate test of automobile drive motor working efficiency is for automobile motor
The efficient control of energy and efficiently utilizing for vehicular energy are most important.
In electric vehicle field, the efficiency of electric machine controller is also one of important performance indexes.Currently, electric machine controller
Efficiency test method typically uses above-mentioned traditional quantity measuring method, but during actual test, due to motor control
Device efficiency processed is usually quite height, and electric machine controller generally carries out height using high-frequency IGBT module or MOSFET modules
Frequency switch control, the high-frequency harmonic and electromagnetic interference thus brought all can be to the signal measurement and efficiency calculation band of electric machine controller
The case where carrying out prodigious error influences, and the efficiency value that there is also electric machine controller frequently is more than 100%.
Therefore, the precision for how effectively improving electric machine controller efficiency test is that technical staff of the same trade is urgently to be resolved hurrily
The problem of.
Invention content
In view of the above problems, the present invention provides a kind of measurement method of vehicle motor controller efficiency, apparatus and system, should
Measurement method can effectively improve the precision of electric machine controller efficiency test, evaluate the design and performance of electric machine controller
Have great importance, is also applied for the numerous areas such as weaponry, aerospace, mechano-electronic.
To achieve the above object, according to the first aspect of the embodiments of the present disclosure, a kind of vehicle motor controller efficiency is provided
Measurement method, including：According to operating status of the motor under default operating mode, the input power of tested motor controller is obtained；
Obtain the energy loss power of the tested motor controller；
According to the input power and the energy loss power, the output power of the tested motor controller is obtained；
According to the output power and the input power, the tested motor controller efficiency is obtained.
In one embodiment, the input power of tested motor controller is obtained, including：
The DC current of tested motor controller input terminal and straight is measured respectively by current sensor and voltage sensor
Galvanic electricity pressure；
According to the DC current and the DC voltage, the input power of tested motor controller is obtained.
In one embodiment, the energy loss power of the tested motor controller is obtained, including：
The electric current of each phase of tested motor controller output end is measured respectively；
The anode and cathode for measuring the tested motor controller input terminal respectively are exported with the tested motor controller
The voltage V between each phase is held, according to the voltage V, obtains the voltage of bridge arm in each phase of tested motor controller output end
With the voltage of each phase lower bridge arm；
According to the voltage of the voltage of bridge arm and each phase lower bridge arm in each phase, by the first preset formula, by the quilt
The electric current of each phase of measured motor controller output end is divided by the electric current of bridge arm in each phase and by the electric current of each phase lower bridge arm；
According to the voltage of bridge arm in each phase of tested motor controller output end and the voltage of each phase lower bridge arm, by each
The electric current of bridge arm and the electric current by each phase lower bridge arm, obtain the loss power of each section in phase；
According to the second preset formula, the loss power of described each section is added, it is total to obtain the tested motor controller
Loss power.
In one embodiment, according to DC bus-bar voltage, given threshold, the threshold value is DC bus-bar voltage
90%；
First preset formula is：
In formula, IVTimAnd UVTimIndicate the electric current and voltage of each phase upper and lower bridge arm, UDCIndicate tested motor controller direct current
The voltage at end；I ∈ { 1,2,3 ..., 2n }, expression be each bridge arm number, subscript k ∈ { 1,2,3 ..., n } indicate each
Phase, per the bridge arm for mutually respectively including corresponding two serial numbers successively；IkWhat is indicated is that tested motor controller output end is each
The electric current of phase；Wherein, when i takes odd number,When i takes even number,
In one embodiment, second preset formula is：
In formula, Plosses_mWhat is indicated is the loss power of tested motor controller, and what T was indicated is that tested motor controller is defeated
The primitive period of outlet electric current, t1It is arbitrary sampling start time, t2=t1Fragrant T；UVTimIndicate the voltage of each phase upper and lower bridge arm；i
∈ { 1,2,3 ..., 2n }, expression be each bridge arm number, IVtim(t) what is indicated is that tested motor controller output end is each
The electric current of the upper and lower bridge arm of phase.
According to the second aspect of the embodiment of the present disclosure, a kind of measuring device of vehicle motor controller efficiency is provided, including：
First acquisition module obtains tested motor controller for the operating status according to motor under default operating mode
Input power；
Second acquisition module, the energy loss power for obtaining the tested motor controller；
Third acquisition module, for according to the input power and the energy loss power, obtaining the tested motor
The output power of controller；
4th acquisition module, for according to the output power and the input power, obtaining the tested motor control
Device efficiency.
In one embodiment, first acquisition module, including：
First measures submodule, and for passing through current sensor and voltage sensor, to measure tested motor controller respectively defeated
Enter the DC current and DC voltage at end；
First acquisition submodule, for according to the DC current and the DC voltage, obtaining tested motor controller
Input power.
In one embodiment, second acquisition module, including：
Second measures submodule, the electric current for measuring each phase of tested motor controller output end respectively；
Second acquisition submodule, for measure respectively the tested motor controller input terminal anode and cathode with it is described
Voltage V between each phase of tested motor controller output end obtains the tested motor controller output according to the voltage V
Hold the voltage of the voltage of bridge arm and each phase lower bridge arm in each phase；
Third acquisition submodule, for according to the voltage of the voltage of bridge arm and each phase lower bridge arm in each phase, by the
The electric current of each phase of tested motor controller output end is divided into through the electric current of bridge arm in each phase and is passed through by one preset formula
The electric current of each phase lower bridge arm；
4th acquisition submodule, for according to the voltage of bridge arm and each phase in each phase of tested motor controller output end
The voltage of lower bridge arm, the electric current by bridge arm in each phase and the electric current by each phase lower bridge arm, obtain the loss power of each section；
5th acquisition submodule obtains institute for according to the second preset formula, the loss power of described each section to be added
State the total loss power of tested motor controller.
In one embodiment, according to DC bus-bar voltage, given threshold, the threshold value is DC bus-bar voltage
90%；First preset formula in the third acquisition submodule is：
In formula, IVTimAnd UVTimIndicate the electric current and voltage of each phase upper and lower bridge arm, UDCIndicate tested motor controller direct current
The voltage at end；I ∈ { 1,2,3 ..., 2n }, expression be each bridge arm number, subscript k ∈ { 1,2,3 ..., n } indicate each
Phase, per the bridge arm for mutually respectively including corresponding two serial numbers successively；IkWhat is indicated is that tested motor controller output end is each
The electric current of phase；Wherein, when i takes odd number,When i takes even number,
In one embodiment, second preset formula in the 5th acquisition submodule is：
In formula, Plosses_mWhat is indicated is the loss power of tested motor controller, and what T was indicated is that tested motor controller is defeated
The primitive period of outlet electric current, t1It is arbitrary sampling start time, t2=t1Fragrant T；UVTimIndicate the voltage of each phase upper and lower bridge arm；i
∈ { 1,2,3 ..., 2n }, expression be each bridge arm number, be changed to IVtim(t) what is indicated is the output of tested motor controller
Hold the electric current of the upper and lower bridge arm of each phase.
According to the third aspect of the embodiment of the present disclosure, a kind of measuring system of vehicle motor controller efficiency is provided, is used
Such as the measurement method of above-described embodiment any one of them vehicle motor controller efficiency, realize to vehicle motor controller efficiency
Measurement.
The advantageous effect of above-mentioned technical proposal provided in an embodiment of the present invention includes at least：
A kind of measurement method of vehicle motor controller efficiency provided in an embodiment of the present invention, including：According to motor pre-
If the operating status under operating mode, the input power of tested motor controller is obtained；Obtain the energy of the tested motor controller
Loss power；According to the input power and the energy loss power, the output power of the tested motor controller is obtained；
According to the output power and the input power, the tested motor controller efficiency is obtained.In said program, by motor control
The requirement of device efficiency test processed can be with test measurement in conjunction with the practical control strategy of automobile drive motor controller and work operating mode
With calculate electric machine controller different power module junction temperatures, motor operation rotating speed and torque point electric machine controller efficiency.This
The method that inventive embodiments are provided considers automobile motor running environment and operating mode and traditional measurement method
It compares, the electric machine controller efficiency value accuracy tested is high, fluctuation is small；It is compared with calorimetry method, testing equipment knot
Structure is simple, can effectively reduce test period, reduces experimentation cost.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and is obtained in book, claims and attached drawing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is a kind of flow chart of the measurement method of vehicle motor controller efficiency provided in an embodiment of the present invention；
Fig. 2 is testing experiment rack layout drawing used in the embodiment of the present invention；
Fig. 3 is the flow for the energy loss power that step S12 provided in an embodiment of the present invention obtains tested motor controller
Figure；
Fig. 4 A are electric machine controller topology diagram provided in an embodiment of the present invention；
Fig. 4 B are bridge arm voltage test schematic diagram in electric machine controller output terminals A phase provided in an embodiment of the present invention；
Fig. 4 C are electric machine controller output terminals A phase lower bridge arm voltage tester schematic diagram provided in an embodiment of the present invention；
Fig. 5 is the block diagram of the measuring device of vehicle motor controller efficiency provided in an embodiment of the present invention；
Fig. 6 is the block diagram of the second acquisition module 52 provided in an embodiment of the present invention.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
An embodiment of the present invention provides a kind of measurement methods of vehicle motor controller efficiency, illustrate below in conjunction with the accompanying drawings.
In the embodiment of the present invention, it is related to a kind of measurement method of vehicle motor controller efficiency, it is shown referring to Fig.1, specifically
Include the following steps：
S11, the operating status according to motor under default operating mode, obtain the input power of tested motor controller；
S12, the energy loss power for obtaining the tested motor controller；
S13, according to the input power and the energy loss power, obtain the output work of the tested motor controller
Rate；
S14, according to the output power and the input power, obtain the tested motor controller efficiency.
In the present embodiment, operating status of the motor under default operating mode, is to be based on automobile motor running environment
And operating mode, wherein motor work operating mode can need to be arranged according to experiment, it can also the presently implemented GB/T of basis for selecting
18488.2-2015《Motor for Electric Automobile and its controller part 2：Test method》It is configured, is obtained under above-mentioned operating mode
The input power of tested motor controller is taken, and obtains the energy loss power of electric machine controller by calculating；It then will input
Power, which subtracts energy loss power, can obtain the output power of tested motor controller, output power compared with input power,
Ratio can be as the actual efficiency of tested motor controller.
Method provided in an embodiment of the present invention be electrical measurement method, by calculate tested motor controller loss power come
The efficiency for calculating tested motor controller indirectly, compared with existing measurement method, method provided in an embodiment of the present invention is on the one hand
It considers automobile motor running environment and operating mode to compare with traditional measurement method, the tested electricity measured
The accuracy of machine controller efficiency value is high, fluctuation is small；On the other hand it is compared with calorimetry method, testing equipment is simple in structure, can
To effectively reduce test period, experimentation cost is reduced.
The measurement method of vehicle motor controller efficiency of the present invention, used testing experiment rack arrangement, ginseng
Shown in Fig. 2, test-bed consists of the following components：Battery simulator, tested motor controller, motor, torque/speed pass
Sensor, shaft coupling, dynamometer machine, Dynamometer Control device, liquid (water) circulating cooling system, current sensor, voltage sensor, work(
Rate analyzer, control host computer ＆ display interfaces, platform system controller, data collecting card etc..Test-bed uses liquid (water)
Circulating cooling system is cooled down, and has temperature sensor in liquid (water) circulating cooling system, can be monitored motor and is tested
The temperature of coolant liquid used in electric machine controller.Torque/speed sensor connects motor and dynamometer machine by yielding coupling,
It is wherein rigid connection with the connection of motor, the connection with dynamometer machine is elastic connection, can more accurately test electricity in this way
The mechanical separator speed of machine output and torque.On cable between battery simulator and tested motor controller equipped with current sensor and
Voltage sensor, between the input terminal and output end of tested motor controller be equipped with voltage sensor, tested motor controller and
Current sensor is housed on the cable between tested motor.In the present embodiment, the test point of voltage can be arranged and be controlled in motor
Between the input terminal and output end of device, the setting of other parts is identical as conventional motors test-bed arrangement.
Experiment process using with dynamometer machine to dragging operation by the way of, inside motor and tested motor controller internal power
First embedding good thermistor on the substrate of module, in order to the work of measurement motor winding and tested motor controller power module
Measurement data is output to platform system controller by temperature.In measurement process, control host computer sends control instruction to rack system
Unite controller, platform system controller sends a command to battery simulator, control battery simulator according to certain voltage or
Power mode operation provides required voltage and current for tested motor controller.Meanwhile platform system controller passes through respectively
Tested motor controller and Dynamometer Control device control motor and dynamometer machine are run according to certain instruction, the rotating speed of motor output
Platform system controller is output to by data acquisition with torque instruction, and is automatically saved.
Above-mentioned steps are further described separately below.
In one embodiment, in step S11, current sensor and voltage are arranged in the input terminal of tested motor controller
Sensor can measure the DC current and DC voltage of tested motor controller input terminal.Input power is equal to tested motor
The input voltage of controller is multiplied by input current, i.e.,：According to DC current and DC voltage, to obtain tested motor controller
Input power.
Further, in above-mentioned steps S12, the energy loss power of tested motor controller is obtained, with reference to shown in Fig. 3,
Including：S121~S125；
S121, the electric current for measuring each phase of tested motor controller output end respectively；
S122, the anode for measuring the tested motor controller input terminal respectively and cathode and the tested motor controller
Voltage V between each phase of output end obtains bridge arm in each phase of tested motor controller output end according to the voltage V
The voltage of voltage and each phase lower bridge arm；
S123, according to the voltage of the voltage of bridge arm and each phase lower bridge arm in each phase, by the first preset formula, by institute
The electric current for stating each phase of tested motor controller output end is divided by the electric current of bridge arm in each phase and by the electricity of each phase lower bridge arm
Stream；
S124, according to the voltage of bridge arm in each phase of tested motor controller output end and the voltage of each phase lower bridge arm,
Electric current by bridge arm in each phase and the electric current by each phase lower bridge arm, obtain the loss power of each section；
S125, the loss power addition of described each section is obtained by the tested motor control according to the second preset formula
The total loss power of device.
In the present embodiment, with reference to shown in Fig. 2, by taking 3 phases as an example, electric current is arranged in the output end position of tested motor controller
Sensor, A current sensors, B current sensors, C current sensors, the sensor can measure the output of tested motor controller
The electric current at end；Meanwhile it is a certain using the anode of voltage sensor measurement tested motor controller input terminal and cathode and output end
Voltage V between phase terminal1、V2, pass through voltage V1、V2It can be by the electric current I of tested motor controller output end1It is separated into logical
The output current I of bridge arm in overpower module11With the output current I by power module lower bridge arm12.It similarly, can be according to this side
Method obtains the output current of bridge arm and lower bridge arm on B phases and C phase power modules.The electric current and voltage that above-mentioned measurement is obtained again are defeated
Enter into power analyzer, the loss power and input power of tested motor controller can be calculated, subtracted each other using power
Method, the output power of tested motor controller can be obtained, and then obtain the efficiency of tested motor controller.Experiment process
In for ensure measure precision, measure when, the measurement point of voltage and current should be in tested motor controller close to connecting terminal
Place.
Electric machine controller Efficiency test method principle proposed by the present invention：Or with A, B, C, for 3 phase output terminals, it is tested
The topological structure of electric machine controller with reference to shown in inside the dotted line in Fig. 4 A, output terminals A, B, C electric current be by tested motor
The upper and lower bridge arm of controller internal power module turns on and off at generation, such as upper bridge arm VT2 at VT1 and lower bridge arm
It turns on and off.Current sensor is arranged in the output end of tested motor controller, can measure the output of tested motor controller
The electric current at end.
With reference to shown in Fig. 4 B, for exporting the module of A phases, the laminated bus and dead resistance of power module are had ignored
Voltage drop (its numerical value is very small) measures the anode and tested motor of tested motor controller input terminal by voltage sensor
Voltage V between controller output end A phasesA1, you can obtain the voltage of bridge arm on power module.
With reference to shown in Fig. 4 C, for exporting the module of A phases, similarly, tested motor control is measured by voltage sensor
Voltage V between the cathode of device input terminal and tested motor controller output end A phasesA2, power module lower bridge arm can be obtained
Voltage.Similarly, the voltage of other module upper and lower bridge arms can be obtained with this measurement method.According to DC bus-bar voltage, if
Determine threshold value, for example, with the 90% of DC bus-bar voltage (be suitably less than or more than 90% can also, this threshold value is bigger, and precision is got over
It is high) it is threshold value, compare the voltage measured, according to shown in the first preset formula (1)：
Formula (1)：
In formula, IVTimAnd UVTimIndicate the electric current and voltage of power module upper and lower bridge arm, UDCIndicate tested motor controller
The voltage of DC terminal, IkIt is the electric current of tested motor controller output end.I=1 in formula, 2,3,4,5,6, i be positive integer, i tables
What is shown is the number of each bridge arm, such as the number 1 in VT1, number 2 in VT2 etc., and m is the meaning of module, only power
The code name of module.Subscript k=A, B, C, the title for each phase that k is indicated.Wherein, when i takes 1 and 2 in above-mentioned formula (1), k takes A, table
Show the 1st phase；When i takes 3 and 4, k takes B, indicates the 2nd phase；When i takes 5 and 6, k takes C, indicates the 3rd phase.
When above-mentioned electric machine controller the output phase be 3 phases, each phase can be indicated with ABC；When tested motor controller
When output end is more than 3 phase, number can be used to replace the title of each phase, such as the 1st phase, the 2nd phase, the 3rd phase, the 4th equal, for preceding
The value of 3 phases, i is still 1 to 6, and for the 4th phase, i takes 7 and 8, and so on.
By the first preset formula (1), the electric current of tested motor controller output end can be divided into defeated by upper bridge arm
The electric current gone out and the electric current exported by lower bridge arm.By the anode of the tested motor controller input terminal measured and cathode and output
Hold the voltage between a certain phase terminal and the electric current isolated (for example, by the voltage V of the 1st phase or A phases1、V2, can will be by
The electric current I of measured motor controller output end1It is separated into the output current I by bridge arm on power module11With pass through power module
The output current I of lower bridge arm12) be input in power analyzer, the loss power of each section is obtained, by the loss work(of this several part
Rate is added, according to shown in the second preset formula (2)：
Formula (2)：
In formula, Plosses_mIndicate the loss power of tested motor controller, i.e. energy loss, what T was indicated is tested motor
The primitive period of controller output end electric current, t1It is arbitrary sampling start time, t2=t1Fragrant T；UVTimIndicate each phase upper and lower bridge arm
Voltage；I=1,2,3,4,5,6 ... 2n, i are positive integer, and that i is indicated is the number of each bridge arm, IVtim(t) indicate be by
The electric current of the upper and lower bridge arm of each phase of measured motor controller output end.
The total loss power of tested motor controller is can be obtained by the second preset formula (2).
The DC current of tested motor controller input terminal and straight is measured respectively using current sensor and voltage sensor
Galvanic electricity pressure, calculates the input electric power of tested motor controller, and then can be obtained by the efficiency of tested motor controller, public
Shown in formula (3)：
Formula (3)：
In formula, ηmcThat indicate is the efficiency of tested motor controller, PinWhat is indicated is the input work of tested motor controller
Rate, Plosses_mWhat is indicated is the loss power of tested motor controller, i.e. energy loss.
It should be noted that the voltage between cathode and electric machine controller output terminals A phase or other phases, for the letter of figure
It is clean, in fig. 2 without mark voltage sensor, but the explanation of test point has been done in figure 4 c.It, can be negative when needing to measure
Voltage sensor is added between each phase such as pole and ABC.It should be further noted that when application this method, actually
It is to need while measuring anode and voltage between each phase such as voltage and cathode and ABC between each phase such as ABC.In addition it is also possible to
It adopts alternatively, measure anode with voltage sensor obtains electric machine controller the output phase with voltage between each phase such as ABC
Upper bridge arm voltage, the voltage that upper bridge arm is subtracted using the voltage of electric machine controller input terminal can be obtained corresponding lower bridge arm voltage
Value.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of measurement dress of vehicle motor controller efficiency
It sets, it, should since the principle of the solved problem of these devices is similar to the aforementioned measurement method of vehicle motor controller efficiency
The implementation of device may refer to the implementation of preceding method, and overlaps will not be repeated.
According to the second aspect of the embodiment of the present disclosure, a kind of vehicle motor controller efficiency provided in an embodiment of the present invention
Measuring device, referring to Figure 5, including：
First acquisition module 51 obtains tested motor controller for the operating status according to motor under default operating mode
Input power；
Second acquisition module 52, the energy loss power for obtaining the tested motor controller；
Third acquisition module 53, for according to the input power and the energy loss power, obtaining the tested electricity
The output power of machine controller；
4th acquisition module 54, for according to the output power and the input power, obtaining the tested motor control
Device efficiency processed.
In one embodiment, first acquisition module 51, including：
First measures submodule 511, and tested motor control is measured respectively for passing through current sensor and voltage sensor
The DC current and DC voltage of device input terminal；
First acquisition submodule 512, for according to the DC current and the DC voltage, obtaining tested motor control
The input power of device.
In one embodiment, the second acquisition module 52, including：
Second measures submodule 521, the electric current for measuring each phase of tested motor controller output end respectively；
Second acquisition submodule 522, for measure respectively the tested motor controller input terminal anode and cathode and
Voltage V between each phase of tested motor controller output end obtains the tested motor controller according to the voltage V
The voltage of the voltage of bridge arm and each phase lower bridge arm in each phase of output end；
Third acquisition submodule 523 passes through for the voltage according to the voltage of bridge arm and each phase lower bridge arm in each phase
The electric current of each phase of tested motor controller output end is divided into through the electric current of bridge arm in each phase and is led to by the first preset formula
Cross the electric current of each phase lower bridge arm；
4th acquisition submodule 524, for according to the voltage of bridge arm in each phase of tested motor controller output end and
The voltage of each phase lower bridge arm, the electric current by bridge arm in each phase and the electric current by each phase lower bridge arm, obtain the loss of each section
Power；
5th acquisition submodule 525, for according to the second preset formula, the loss power of described each section being added, is obtained
Obtain the total loss power of the tested motor controller.
In one embodiment, according to DC bus-bar voltage, given threshold, the threshold value is DC bus-bar voltage
90%；
First preset formula is：
In formula, IVTimAnd UVTimIndicate the electric current and voltage of each phase upper and lower bridge arm, UDCIndicate tested motor controller direct current
The voltage at end；I ∈ { 1,2,3 ..., 2n }, expression be each bridge arm number, subscript k ∈ { 1,2,3 ..., n } indicate each
Phase, per the bridge arm for mutually respectively including corresponding two serial numbers successively；IkWhat is indicated is that tested motor controller output end is each
The electric current of phase；Wherein, when i takes odd number,When i takes even number,
In one embodiment, second preset formula is：
In formula, Plosses_mWhat is indicated is the loss power of tested motor controller, and what T was indicated is that tested motor controller is defeated
The primitive period of outlet electric current, t1It is arbitrary sampling start time, t2=t1Fragrant T；UVTimIndicate the voltage of each phase upper and lower bridge arm；i
∈ { 1,2,3 ..., 2n }, expression be each bridge arm number, IVtim(t) what is indicated is that tested motor controller output end is each
The electric current of the upper and lower bridge arm of phase.
According to the third aspect of the embodiment of the present disclosure, a kind of vehicle motor controller efficiency provided in an embodiment of the present invention
Measuring system is realized using the measurement method of the vehicle motor controller efficiency as described in any one of above-described embodiment to vehicle
With the measurement of electric machine controller efficiency.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of measurement method of vehicle motor controller efficiency, which is characterized in that including：
According to operating status of the motor under default operating mode, the input power of tested motor controller is obtained；
Obtain the energy loss power of the tested motor controller；
According to the input power and the energy loss power, the output power of the tested motor controller is obtained；
According to the output power and the input power, the tested motor controller efficiency is obtained.
2. a kind of measurement method of vehicle motor controller efficiency as described in claim 1, which is characterized in that obtain tested electricity
The input power of machine controller, including：
Measure the DC current and direct current of tested motor controller input terminal respectively by current sensor and voltage sensor
Pressure；
According to the DC current and the DC voltage, the input power of tested motor controller is obtained.
3. a kind of measurement method of vehicle motor controller efficiency as described in claim 1, which is characterized in that obtain the quilt
The energy loss power of measured motor controller, including：
The electric current of each phase of tested motor controller output end is measured respectively；
Positive and cathode and the tested motor controller output end for measuring the tested motor controller input terminal respectively are each
Voltage V between phase obtains in each phase of tested motor controller output end the voltage of bridge arm and each according to the voltage V
The voltage of phase lower bridge arm；
According to the voltage of the voltage of bridge arm and each phase lower bridge arm in each phase, by the first preset formula, by the tested electricity
The electric current of each phase of machine controller output end is divided by the electric current of bridge arm in each phase and by the electric current of each phase lower bridge arm；
According to the voltage of bridge arm in each phase of tested motor controller output end and the voltage of each phase lower bridge arm, by each phase
The electric current of bridge arm and electric current by each phase lower bridge arm, obtain the loss power of each section；
According to the second preset formula, the loss power of described each section is added, the total damage of the tested motor controller is obtained
Wasted work rate.
4. a kind of measurement method of vehicle motor controller efficiency as claimed in claim 3, which is characterized in that according to direct current mother
Line voltage, given threshold, the threshold value are the 90% of DC bus-bar voltage；First preset formula is：
In formula, IVTimAnd UVTimIndicate the electric current and voltage of each phase upper and lower bridge arm, UDCIndicate the electricity of tested motor controller DC terminal
Pressure；I ∈ { 1,2,3 ..., 2n }, expression be each bridge arm number, subscript k ∈ { 1,2,3 ..., n } indicate each phase, per phase
Respectively include the bridge arm of corresponding two serial numbers successively；IkWhat is indicated is the electricity of each phase of tested motor controller output end
Stream；Wherein, when i takes odd number,When i takes even number,
5. a kind of measurement method of vehicle motor controller efficiency as claimed in claim 4, which is characterized in that described second is pre-
If formula is：
In formula, Plosses_mWhat is indicated is the loss power of tested motor controller, and what T was indicated is tested motor controller output end
The primitive period of electric current, t1It is arbitrary sampling start time, t2=t1+T；UVTimIndicate the voltage of each phase upper and lower bridge arm；i∈{1,
2,3 ..., 2n }, expression be each bridge arm number, IVtim(t) what is indicated is the upper of each phase of tested motor controller output end
The electric current of lower bridge arm.
6. a kind of measuring device of vehicle motor controller efficiency, which is characterized in that including：
First acquisition module obtains the input of tested motor controller for the operating status according to motor under default operating mode
Power；
Second acquisition module, the energy loss power for obtaining the tested motor controller；
Third acquisition module, for according to the input power and the energy loss power, obtaining the tested motor control
The output power of device；
4th acquisition module, for according to the output power and the input power, obtaining the tested motor controller effect
Rate.
7. a kind of measuring device of vehicle motor controller efficiency as claimed in claim 6, which is characterized in that described first obtains
Modulus block, including：
First measures submodule, and tested motor controller input terminal is measured respectively for passing through current sensor and voltage sensor
DC current and DC voltage；
First acquisition submodule, for according to the DC current and the DC voltage, obtaining the defeated of tested motor controller
Enter power.
8. a kind of measuring device of vehicle motor controller efficiency as claimed in claim 6, which is characterized in that described second obtains
Modulus block, including：
Second measures submodule, the electric current for measuring each phase of tested motor controller output end respectively；
Second acquisition submodule, anode and cathode for measuring the tested motor controller input terminal respectively are tested with described
It is each to obtain the tested motor controller output end according to the voltage V by voltage V between each phase of electric machine controller output end
The voltage of the voltage of bridge arm and each phase lower bridge arm in phase；
Third acquisition submodule, it is pre- by first for the voltage according to the voltage of bridge arm and each phase lower bridge arm in each phase
If formula, the electric current of each phase of tested motor controller output end is divided by the electric current of bridge arm in each phase and by each phase
The electric current of lower bridge arm；
4th acquisition submodule, for according to bridge under the voltage of bridge arm in each phase of tested motor controller output end and each phase
The voltage of arm, the electric current by bridge arm in each phase and the electric current by each phase lower bridge arm, obtain the loss power of each section；
5th acquisition submodule, for according to the second preset formula, the loss power of described each section being added, the quilt is obtained
The total loss power of measured motor controller.
9. a kind of measuring system of vehicle motor controller efficiency, which is characterized in that using as described in claim any one of 1-5
Vehicle motor controller efficiency measurement method, realize measurement to vehicle motor controller efficiency.
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| CN201810297009.1A CN108614151A (en) | 2018-03-30 | 2018-03-30 | A kind of measurement method of vehicle motor controller efficiency, apparatus and system |
| PCT/CN2019/073470 WO2019184581A1 (en) | 2018-03-30 | 2019-01-28 | Method, device and system for measuring efficiency of vehicle electrical motor controller |
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