CN103840693A - Method and system for controlling inverter of vehicle - Google Patents
Method and system for controlling inverter of vehicle Download PDFInfo
- Publication number
- CN103840693A CN103840693A CN201310093675.0A CN201310093675A CN103840693A CN 103840693 A CN103840693 A CN 103840693A CN 201310093675 A CN201310093675 A CN 201310093675A CN 103840693 A CN103840693 A CN 103840693A
- Authority
- CN
- China
- Prior art keywords
- inverter
- switching frequency
- temperature
- relation
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Inverter Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a method and a system for controlling an inverter of vehicle, and specifically provides a method, a system and vehicle for controlling the inverter of the vehicle having a motor; the temperature of the inverter is obtained; switch frequency of the inverter can be adjusted according to the temperature of the inverter.
Description
Technical field
The disclosure relates generally to the field of vehicle, more specifically, relates to the method and system of the inverter for controlling vehicle.
Background technology
Some vehicle, particularly motor vehicle and hybrid electric vehicle, have the inverter that direct current (DC) is transformed into alternating current (AC).Conventionally, it is desirable to an inverter temperature and maintain in a threshold value, for example, to avoid excess temperature (over-temperature) state of inverter.
Therefore, expect to be provided for controlling the improving one's methods of inverter of vehicle, for example, help avoid the method for the over-temperature condition of inverter.Also expect to be provided for the improved system of this control to vehicle inverter and to comprise the vehicle of this method and system.In addition, the detailed description based on subsequently and claims and by reference to the accompanying drawings with aforesaid technical field and background technology, other desired character of the present invention and characteristic will become apparent.
Summary of the invention
According to an exemplary embodiment, provide a kind of for controlling the method for inverter of the vehicle with motor.The method comprises: obtain the temperature of inverter and regulate the switching frequency of inverter based on this temperature.
According to another exemplary embodiment, provide a kind of for controlling the system of inverter of vehicle, described inverter has switching frequency.This system comprises memory and processor.Memory is configured to store the current switching frequency of inverter and inverter is expected the relation between switching frequency, and this relation is based on inverter temperature.Processor is configured to regulate based on described temperature and described relation the switching frequency of inverter.
According to another exemplary embodiment, provide a kind of vehicle.This vehicle comprises multiple wheels and a power train.Power train is configured to provide power to described multiple wheels.Power train comprises motor and inverter assembly.Inverter assembly has the inverter that is connected to motor.The switching frequency that inverter assembly is configured to obtain the temperature of inverter and regulates inverter based on this temperature.
The invention still further relates to following technical scheme.
Scheme
1.for controlling the method for inverter for vehicle, described method comprises:
Obtain the temperature of described inverter; And
Regulate the switching frequency of described inverter based on described temperature.
Scheme
2.method as described in scheme 1, wherein:
The step that obtains described temperature comprises the maximum temperature that obtains described inverter; And
Regulate the step of described switching frequency to comprise based on described maximum temperature and regulate described switching frequency.
Scheme
3.method as described in scheme 2, wherein, the step that obtains described maximum temperature comprises:
Obtain the a-phase temperature of described inverter;
Obtain the b-phase temperature of described inverter;
Obtain the c-phase temperature of described inverter; And
Maximum temperature in described a-phase temperature, described b-phase temperature and described c-phase temperature is defined as to described maximum temperature.
Scheme
4.method as described in scheme 1, wherein, regulates the step of described switching frequency to comprise:
Utilize described temperature and make described temperature set up with the relation between the expectation switching frequency of described inverter and the current switching frequency of described inverter the look-up table contacting, determine described relation; And
Regulate described switching frequency based on described relation.
Scheme
5.method as described in scheme 4, wherein:
The step of determining described relation comprises utilizes described temperature and described look-up table to determine the ratio between described expectation switching frequency and described current switching frequency.
Scheme
6.method as described in scheme 5, wherein:
The step that obtains described temperature comprises the maximum temperature of determining described inverter; And
The step of determining described relation comprises based on described maximum temperature and described look-up table determines described relation, and wherein, described look-up table is set up described maximum temperature and described relation to contact.
Scheme
7.method as described in scheme 6, also comprises:
Determine described current switching frequency; And
Calculate described expectation switching frequency based on described current switching frequency and described ratio;
Wherein, regulate the step of described switching frequency to comprise described switching frequency is adjusted to and equals described expectation switching frequency, if described expectation switching frequency is greater than minimal switching frequency and is less than maximum switching frequency.
Scheme
8.for controlling the system of inverter for vehicle, described inverter has switching frequency, and described system comprises:
Memory, described memory is configured to store the relation between the current switching frequency of described inverter and the expectation switching frequency of described inverter, the temperature of described relation based on described inverter; And
Processor, described processor is configured to regulate based on described temperature and described relation the switching frequency of described inverter.
Scheme
9.system as described in scheme 8, wherein:
The maximum temperature of described relation based on described inverter; And
Described processor is configured to regulate described switching frequency based on described maximum temperature and described relation.
Scheme
10.system as described in scheme 9, wherein:
Described maximum temperature is defined as to the peak in the b-phase temperature of the a-phase temperature of described inverter, described inverter and the c-phase temperature of described inverter.
Scheme
11.system as described in scheme 10, also comprises:
Be configured to measure the first sensor of described a-phase temperature;
Be configured to measure the second transducer of described b-phase temperature; And
Be configured to measure the 3rd transducer of described c-phase temperature.
Scheme
12.system as described in scheme 8, wherein, described relation comprises the ratio in the look-up table that is stored in described memory between described expectation switching frequency and described current switching frequency.
Scheme
13.system as described in scheme 12, wherein, described processor is configured to:
Obtain the maximum temperature of described inverter; And
Utilize described ratio to regulate described switching frequency.
Scheme
14.system as described in scheme 13, wherein, described processor is configured to:
Determine described current switching frequency;
Based on described current switching frequency and described ratio and calculate described expectation switching frequency; And
Described switching frequency is adjusted to and equals described expectation switching frequency, if described expectation switching frequency is greater than minimal switching frequency and is less than maximum switching frequency.
Scheme
15.a kind of vehicle, comprising:
Multiple wheels; And
The power train that is configured to provide power to described multiple wheels, described power train comprises:
Motor; And
Inverter assembly, described inverter assembly has the inverter that is connected to described motor, and described inverter assembly is configured to:
Obtain the temperature of described inverter; And
Regulate the switching frequency of described inverter based on described temperature.
Scheme
16.vehicle as described in scheme 15, wherein, described inverter assembly is configured to:
Obtain the a-phase temperature of described inverter;
Obtain the b-phase temperature of described inverter;
Obtain the c-phase temperature of described inverter;
Determine the maximum temperature of described inverter, described maximum temperature is the peak in described a-phase temperature, described b-phase temperature and described c-phase temperature; And
Regulate the switching frequency of described inverter based on described maximum temperature.
Scheme
17.vehicle as described in scheme 15, wherein, described inverter assembly is configured to:
Utilize described temperature and make described temperature set up with the relation between the expectation switching frequency of described inverter and the current switching frequency of described inverter the look-up table contacting, determine described relation; And
Regulate described switching frequency based on described relation.
Scheme
18.vehicle as described in scheme 17, wherein, described inverter assembly is configured to:
Determine the maximum temperature of described inverter; And
Determine described relation based on described maximum temperature and described look-up table, wherein, described look-up table contacts described maximum temperature and the foundation of described relation.
Scheme
19.vehicle as described in scheme 18, wherein, described relation comprises the ratio between described expectation switching frequency and described current switching frequency.
Scheme
20.vehicle as described in scheme 19, wherein, described inverter assembly is also configured to:
Determine described current switching frequency;
Calculate described expectation switching frequency based on described current switching frequency and described ratio; And
Described switching frequency is adjusted to and equals described expectation switching frequency, if described expectation switching frequency is greater than minimal switching frequency and is less than maximum switching frequency.
Accompanying drawing explanation
In connection with the following drawings, the disclosure is described hereinafter, wherein identical Reference numeral represents identical element, and wherein:
Fig. 1 is according to the functional-block diagram of the vehicle that comprises inverter assembly of an exemplary embodiment; Inverter assembly has inverter and the control system for control inverter.
Fig. 2 is according to the functional-block diagram of the inverter assembly of Fig. 1 of an exemplary embodiment.
Fig. 3 be according to an alternative exemplary embodiment for controlling the flow chart of process of vehicle inverter, can implement this process in conjunction with the inverter assembly of the vehicle of Fig. 1 and Fig. 1 and Fig. 2.
Fig. 4 is according to the flow chart of the subprocess of a step in the process of Fig. 3 of an exemplary embodiment (for determining the subprocess of current inverter switching frequency).
Embodiment
Following detailed description is only exemplary in itself, is not intended to limit the disclosure or its application and use.In addition, do not have intention to be subject to the constraint of any theory given in background technology above or detailed description below.
Fig. 1 shows vehicle 100 or the automobile according to an exemplary embodiment.As described in more detail below, vehicle 100 comprises motor 132 and inverter assembly 126; The temperature of inverter assembly 126 based on inverter assembly 126 controlled the inverter (comprising the switching frequency of inverter) of vehicle, contributes to thus to prevent the over-temperature condition (and contributing to prevent that inverter is because over-temperature condition has to close) of inverter assembly 126.
In the exemplary embodiment shown in Fig. 1, vehicle 100 is hybrid electric vehicle (HEV), and vehicle 100 also comprises actuator 120, chargeable energy-storage system (RESS) 122, above-mentioned inverter assembly 126 and radiator 128.Actuator 120 comprises at least one propulsion system 129 that is arranged on chassis 112 and drives wheel 116.
Particularly, as shown in fig. 1, actuator 120 comprises combustion engine 130 and motor/generator (or motor) 132 (above-mentioned).Be to be understood that as those skilled in the art, motor 132 comprises transmission device, although and not shown field frame assembly (comprising conductive coil), rotor assembly (comprising ferromagnetic core), cooling fluid or the cooling agent of also comprising.Field frame assembly in motor 132 and/or rotor assembly can comprise multiple electromagnetic poles, as common understood.
Still with reference to Fig. 1, by integrated to combustion engine 130 and motor 132, make one or more power transmission shaft 134 mechanical attachment of one or two process in them arrive at least part of wheel 116.In one embodiment, vehicle 100 is " series hybrid-power motor vehicles ", and wherein combustion engine 130 is not directly connected to transmission device but is connected to the generator (not shown) for electric power is provided to motor 132.In another embodiment, vehicle 100 is " parallel mixed power electric vehicles ", wherein by for example make motor 132 rotor be connected to combustion engine 130 power transmission shaft make combustion engine 130 directly be connected to transmission device.In some other embodiment, vehicle 100 can comprise the pure electric vehicle that there is no combustion engine 130.
Fig. 2 provides according to the functional-block diagram of the inverter assembly 126 of Fig. 1 of an exemplary embodiment.As shown in Figure 2, inverter assembly 126 comprises inverter 202 and control system 204.Inverter assembly 126 is depicted as on one or more other illustrated sides of Vehicular system 206, and Vehicular system 206 can for example, communicate and contact via communication line 207 (vehicle CAN bus) and inverter assembly 126.
As shown in Figure 2, control system 204 comprises sensor array 210 and controller 220.In addition, although so do not illustrate, control system 204 (and/or its one or more parts) is can be with the electronic control system of Fig. 1 118 integrated and can comprise one or more power supplys.In certain embodiments, controller 220 can comprise cooperative multiple controller and/or system.Understand for simplicity, sort controller and/or system are jointly called to controller 220 herein.
As shown in Figure 2, controller 220 comprises computer system.In certain embodiments, controller 220 also can comprise one or more transducers in sensor array 210, electronic control system 118 and/or its part and/or one or more other device of Fig. 1.In addition, should be understood that controller 220 can also be different from the embodiment shown in Fig. 2 by alternate manner.For example, controller 220 can be connected to or can otherwise use one or more remote computer systems and/or other control system.
In illustrated embodiment, the computer system of controller 220 comprise there is processor 222, the computer system of memory 224, interface 226, storage device 228 and bus 230.The calculating of processor 222 implementation controllers 220 and control function, and can comprise that the processor of any type or multiple processor, single integrated circuit (for example microprocessor) or collaborative work are to realize integrated circuit (IC) apparatus and/or the circuit board of any suitable quantity of function of processing unit.At run duration, contained one or more programs 232 in processor 222 execute stores 224, therefore control the general operation of the computer system of controller 220 and controller 220, preferably for example, in the time carrying out herein the step of described process (step of the process 300 further describing below in conjunction with Fig. 3 and Fig. 4).
Should be understood that, although describe this exemplary embodiment under the background of full function computer system, but those skilled in the art will recognize that mechanism of the present disclosure can utilize the nonvolatile computer-readable signal of one or more types to carry medium and issue with the form of program product, it is for storing its program and instruction and carrying out its issue that described nonvolatile computer-readable signal carries medium, for example storage program and contain the nonvolatile computer-readable medium that makes computer processor (for example processor 222) complete and carry out the computer instruction of this program.This program product can adopt variform, and no matter carries the particular type of medium how the disclosure is all applicable on an equal basis for carrying out the computer-readable signal of issue.The example that signal carries medium comprises: recordable media (for example floppy disc, hard disk drive, storage card and CD) and transmission medium (for example Digital and analog communication line).Should be understood that similarly, the computer system of controller 220 also can otherwise be different from the embodiment shown in Fig. 2, and for example computer system of controller 220 can be connected to or can otherwise use one or more remote computer systems and/or other control system.
Fig. 3 is according to the flow chart of the process 300 for control inverter of an exemplary embodiment.Thereby the switching frequency of process 300 control inverters helps avoid the over-temperature condition (and helping avoid inverter because overheat protector has to close) of inverter.Process 300 can be combined with the inverter assembly 126 of the vehicle of Fig. 1 100 and Fig. 1 and Fig. 2 (comprising motor 132, inverter 202, control system 204 and various parts thereof).Preferably, in current vehicle drive (or the circulation of current vehicle ignition), repeatedly each step of (and preferably continuously) implementation 300.
As shown in Figure 3, process 300 comprises the step (step 302) that obtains the first inverter temperature.In current ignition cycle, during invertor operation, preferably obtain the first inverter temperature having about the first-phase of inverter.In a preferred embodiment, during step 302, utilize shown in Fig. 4 and the step of the subprocess further discussed is below determined the a-phase temperature of inverter.The controller (preferably its processor 222) that a-phase temperature value is offered to Fig. 2 is processed.
Also obtain the second inverter temperature (step 304).In current ignition cycle, during invertor operation, preferably obtain the second inverter temperature having about the second-phase of inverter.In a preferred embodiment, during step 304, utilize shown in Fig. 4 and the step of the subprocess further discussed is below determined the b-phase temperature of inverter.The controller (preferably its processor 222) that b-phase temperature value is offered to Fig. 2 is processed.
In addition, obtain the 3rd inverter temperature (step 306).In current ignition cycle, at the run duration of inverter, preferably obtain the 3rd inverter temperature having about the third phase of inverter.In a preferred embodiment, during step 306, utilize shown in Fig. 4 and the step of the subprocess further discussed is below determined the c-phase temperature of inverter.The controller (preferably its processor 222) that c-phase temperature value is offered to Fig. 2 is processed.
With reference to Fig. 4, provide according to the step (corresponding to the step 302,304 and 306 of Fig. 3) of the subprocess of the phase temperature for definite each phase of inverter of an exemplary embodiment.Preferably, be individually the step of each phase execution graph 4 of inverter.Particularly, preferably, (i) for the step of the a-phase execution graph 4 of inverter, thus the a-phase inversion actuator temperature of determining step 302; (ii) thus for the b-phase inversion actuator temperature of the step determining step 304 of the b-phase execution graph 4 of inverter; Thereby and (iii) for the c-phase inversion actuator temperature of the step determining step 306 of the c-phase execution graph 4 of inverter.
Measure the voltage (step 402) of inverter.The voltage of step 402 preferably includes direct current (DC) bus voltage of inverter.Preferably measure this voltage by one or more voltage sensors 216 of Fig. 2, and this voltage is offered to the processor 222 of Fig. 2.
Determine the phase voltage directive (step 404) of the inverter phase in considering.In a preferred embodiment, (i) in the repeating for the first time of step 404, the voltage instruction of the a-phase of determining step 302; (ii) in the repeating for the second time of step 404, the voltage instruction of the b-phase of determining step 304; And (iii) in the repeating for the third time of step 404, the voltage instruction of the c-phase of determining step 306.Preferably determine these phase voltage directives by the processor 222 of Fig. 2.
Measure the phase current (step 406) of the inverter phase in considering.In a preferred embodiment, (i) in the repeating for the first time of step 406, the phase current of the a-phase of determining step 302; (ii) in the repeating for the second time of step 406, the phase current of the b-phase of determining step 304; And (iii) in the repeating for the third time of step 406, the phase current of the c-phase of determining step 306.Preferably measure these phase currents by the current sensor 214 of Fig. 2, and these phase currents are offered to the processor 222 of Fig. 2.
Determine the switching frequency (step 408) of inverter.In a preferred embodiment, the switching frequency of step 408 comprises the current switching frequency of the inverter 202 of Fig. 2.Preferably determine switching frequency, the inverter 202 of controller 220 control charts 2 by the processor 222 of the controller 220 of Fig. 2.For example, processor 222 can be monitored the actual switch of inverter 202 within a period of time, or can access the switch command of inverter 202 switches for control chart 2 that used by processor 222.
Calculate the power loss (step 410) of inverter.Preferably, for with the repetition of the subprocess of the mutually relevant Fig. 4 losing for its rated output at present, utilized phase voltage directive, the measurement phase current of step 406 and the switching frequency of step 408 of voltage, step 404 of step 402 as input by the processor 222 of Fig. 2, and calculate individually the power loss of the each phase of inverter (, the b-phase of the a-phase of step 302, step 304 and the c-phase of step 306).Preferably, for each phase of inverter, repeat these steps and other step of Fig. 4.
In one exemplary embodiment, can utilize the following step to calculate inverter loss:
(1), according to following equation, utilize three-phase voltage instruction and obtain α and the β component of voltage instruction:
(2), according to following equation, utilize the three-phase current of measurement and obtain α and the β component of electric current:
(3), according to following equation, utilize the α of voltage instruction and β component and obtain size and the phase place of voltage instruction:
(4), according to following equation, utilize the α of electric current and β component and obtain size and the phase place of electric current:
(5), according to following equation, obtain dc (direct current) power and ac (alternating current) power:
(equation 10); And
(6), according to following equation, obtain inverter loss:
Wherein
v dc the inverter dc voltage that representative is obtained by step 402,
v* as , V* bs , V* cs the phase voltage directive that representative is obtained by step 404,
i as , I bs , I cs the phase current that representative is obtained by step 406, and
i dc represent inverter dc electric current, can utilize another current sensor or utilize the three-phase current of inverter and on off state and obtain this
i dc .But, can calculate inverter loss by different modes in other embodiments.
The power loss of step 410 is used for the caused variations in temperature (step 412) of the inverter phase of calculating consideration.Particularly, according to an embodiment, the temperature that the processor 222 of Fig. 2 utilizes the thermal model in the memory 224 that is stored in Fig. 2 as a storing value 234 to calculate the inverter 202 of the Fig. 2 causing due to the power loss of the step 410 of the corresponding phase of inverter raises.Preferably, in the independent repetition of step 412, utilize the corresponding power loss value that repetition obtains separately by the step 410 corresponding to the corresponding phase of inverter, calculate the variations in temperature of the each phase of inverter (a-phase, b-phase and c-phase).
Near base position inverter, measures temperature (step 414).Preferably, measure this temperature by the temperature sensor 212 of one or more Fig. 2, and this temperature is offered to the processor 222 of Fig. 2.In one embodiment, measure the temperature relevant with cooling agent for inverter.In another embodiment, measure the temperature relevant with cooling pin for inverter.
Calculate the inverter temperature (step 416) of the corresponding phase in considering.With regard to each phase, preferably by the temperature of step 414 and the variations in temperature of step 412 are added to the inverter temperature of calculating corresponding phase.Preferably, during the corresponding repetition of step 416, the inverter temperature of the c-phase of the a-phase of calculation procedure 302, the b-phase of step 304 and step 306.The inverter temperature that these calculate represents respectively the value obtaining in the step 302 of Fig. 3,304 and 306.Preferably, carry out these calculating by the processor 222 of Fig. 2.
Determine the maximum temperature (step 308) of inverter.In a preferred embodiment, maximum temperature is the maximum in the nearest value of the first, second, and third inverter temperature value of step 302-306 during current ignition cycle.In the above-described embodiments, maximum temperature comprises the peak of the phase temperature of inverter.Particularly, the a-phase temperature of inverter, b-phase temperature or c-phase temperature, which is the peak in three values of nearest value of current ignition cycle, which maximum temperature just comprises.Preferably, by the processor 222 of Fig. 2 based in above-mentioned steps 302-306 obtain various temperature values and determine the maximum temperature of inverter.
Determine the relation (step 310) between the expectation switching frequency of inverter and the current switching frequency of inverter.Utilize inverter temperature (maximum temperature of preferred steps 308) to determine this relation.Preferably, utilize look-up table to determine this relation by the processor 222 of Fig. 2, look-up table represents the storing value 234 in the memory 224 that is stored in Fig. 2.Look-up table provides corresponding relation value for each maximum temperature value.
Particularly, in a preferred embodiment, in given step 308, the highest inverter temperature in the situation that, the relation of step 310 comprises the ratio of expecting between switching frequency and current switching frequency.In the present embodiment, look-up table provides corresponding ratio (, expect switching frequency/current switching frequency) for each maximum temperature value.For example, the value in look-up table for example can be, by the either type in some different modes (utilizing the experimental data with the various ratios under various different temperatures values) the previous in the past available document in value, this area generating and/or the manufacturer specification of inverter.
Determine the current switching frequency (step 312) of inverter.Preferably, determine current switching frequency by the processor 222 of Fig. 2, the inverter 202 of processor 222 control charts 2.For example, processor 222 can be monitored the actual switch of inverter 202 within a period of time, or can access by processor 222 and be used for the switch command of switch of inverter 202 of control chart 2.In a preferred embodiment, determined value in the step 408 of current switching frequency corresponding to above-mentioned Fig. 4.
Determine the expectation switching frequency (step 314) of inverter.Utilize the current switching frequency of step 312 and the switching frequency relation of step 310 to determine and expect switching frequency.Comprise in described relation in above-described embodiment of ratio (that is, expecting switching frequency/current switching frequency), in step 314, compare and calculation expectation switching frequency by the switching frequency that the current switching frequency of step 312 is multiplied by step 310.Preferably, by the processor 222 calculation expectation switching frequencies of Fig. 2.
Whether the expectation switching frequency of determining step 314 is greater than the maximum switching frequency (step 316) of inverter.Maximum switching frequency preferably includes following switching frequency: if think for invertor operation it is dangerous and/or less desirable higher than this switching frequency.In one embodiment, by the processor 222 of Fig. 2, the inverter 202 based on Fig. 2 and/or the manufacturer specification of processor 222 are determined maximum switching frequency.In other embodiments, before process 300, (for example, during manufacture) pre-determine maximum switching frequency, and this maximum switching frequency is stored in to the interior value in its storing value 234 of memory 224.
If judgement expects that switching frequency is more than or equal to maximum switching frequency in step 316, so the switching frequency of inverter is adjusted to and equals maximum switching frequency (step 318).Preferably, carry out this regulate by the processor 222 of the controller 220 of Fig. 2, processor 222 carrys out the switching frequency of the inverter 202 of control chart 2 by offering the instruction of inverter 202.
On the contrary, if judgement expects that switching frequency is less than maximum switching frequency in step 316, whether the expectation switching frequency of determining step 314 is less than the minimal switching frequency (step 320) of inverter so.Minimal switching frequency preferably includes following switching frequency: if think for the operation of inverter it is dangerous and/or less desirable lower than this switching frequency.In one embodiment, the manufacturer specification of the inverter 202 by the processor 222 of Fig. 2 based on Fig. 2, for example, determine minimal switching frequency about the requirement of the noise in vehicle and/or vibration and/or the motor speed of vehicle (, can utilize motor speed sensor measured).In other embodiments, before process 300, (for example, during manufacture) pre-determine minimal switching frequency, and this minimal switching frequency is stored in to a value in its storing value 234 in memory 224.
If judgement expects that switching frequency is less than or equal to minimal switching frequency in step 320, so the switching frequency of inverter is adjusted to and equals minimal switching frequency (step 322).Preferably, carry out this by the processor 222 of the controller 220 of Fig. 2 and regulate, the switching frequency of processor 222 inverter 202 of control chart 2 by offering the instruction of inverter 202.
On the contrary, if judgement expects that switching frequency is greater than minimal switching frequency in step 320, so the switching frequency of inverter is adjusted to the expectation switching frequency (step 324) that equals step 314.Preferably, carry out this by the processor 222 of the controller 220 of Fig. 2 and regulate, the switching frequency of processor 222 inverter 202 of control chart 2 by offering the instruction of inverter 202.Therefore,, if expect that switching frequency is between the minimum and maximum switch limit value of allowing of inverter, use the expectation switching frequency of step 314.
Therefore, method disclosed herein, system and vehicle provide the improved control to vehicle inverter potentially.Switching frequency relation (preferably, ratio) for based on inverter temperature (preferably, inverter is the maximum temperature in homophase temperature not) determine the expectation switching frequency of inverter, thus situation about raising for inverter temperature regulates the switching frequency of inverter.During this situation, by regulating the switching frequency of inverter, can contribute to prevent over-temperature condition, and can contribute to allow vehicle to use inverter reach the longer time and needn't close inverter due to inverter overheat protector.
Should be understood that, method disclosed herein, system and vehicle can be from described different shown in accompanying drawing and herein.For example, vehicle 100, inverter assembly 126 and/or its various parts and/or related item (for example,, in Fig. 1 and Fig. 2) can be from shown in Fig. 1 and Fig. 2 and described different in conjunction with Fig. 1 and Fig. 2.In addition, should be understood that, some step of process 300 (and/or its subprocess) can be from shown in Fig. 3 or Fig. 4 and/or different with the described step of Fig. 4 in conjunction with Fig. 3.Similarly, should be understood that, some step of said process can side by side carry out or with from shown in Fig. 3 and Fig. 4 and/or above described in conjunction with Fig. 3 and Fig. 4 the order that order is different and carried out.
Although provided at least one exemplary embodiment in the detailed description above, will be appreciated that and have a large amount of modification.Also will be appreciated that these exemplary embodiments are example, and be not intended to limit the scope of the invention by any way, apply or construct.On the contrary, detailed description above will be provided for the route map easily of exemplifying embodiment embodiment for those skilled in the art.Should be understood that, do not deviate from claims and legal equivalents thereof state the scope of the invention in the situation that, can be set up and make a variety of changes at the function of each element and cloth.
Claims (10)
1. for controlling the method for inverter for vehicle, described method comprises:
Obtain the temperature of described inverter; And
Regulate the switching frequency of described inverter based on described temperature.
2. the method for claim 1, wherein:
The step that obtains described temperature comprises the maximum temperature that obtains described inverter; And
Regulate the step of described switching frequency to comprise based on described maximum temperature and regulate described switching frequency.
3. method as claimed in claim 2, wherein, the step that obtains described maximum temperature comprises:
Obtain the a-phase temperature of described inverter;
Obtain the b-phase temperature of described inverter;
Obtain the c-phase temperature of described inverter; And
Maximum temperature in described a-phase temperature, described b-phase temperature and described c-phase temperature is defined as to described maximum temperature.
4. the method for claim 1, wherein regulate the step of described switching frequency to comprise:
Utilize described temperature and make described temperature set up with the relation between the expectation switching frequency of described inverter and the current switching frequency of described inverter the look-up table contacting, determine described relation; And
Regulate described switching frequency based on described relation.
5. method as claimed in claim 4, wherein:
The step of determining described relation comprises utilizes described temperature and described look-up table to determine the ratio between described expectation switching frequency and described current switching frequency.
6. method as claimed in claim 5, wherein:
The step that obtains described temperature comprises the maximum temperature of determining described inverter; And
The step of determining described relation comprises based on described maximum temperature and described look-up table determines described relation, and wherein, described look-up table is set up described maximum temperature and described relation to contact.
7. method as claimed in claim 6, also comprises:
Determine described current switching frequency; And
Calculate described expectation switching frequency based on described current switching frequency and described ratio;
Wherein, regulate the step of described switching frequency to comprise described switching frequency is adjusted to and equals described expectation switching frequency, if described expectation switching frequency is greater than minimal switching frequency and is less than maximum switching frequency.
8. for controlling the system of inverter for vehicle, described inverter has switching frequency, and described system comprises:
Memory, described memory is configured to store the relation between the current switching frequency of described inverter and the expectation switching frequency of described inverter, the temperature of described relation based on described inverter; And
Processor, described processor is configured to regulate based on described temperature and described relation the switching frequency of described inverter.
9. system as claimed in claim 8, wherein:
The maximum temperature of described relation based on described inverter; And
Described processor is configured to regulate described switching frequency based on described maximum temperature and described relation.
10. a vehicle, comprising:
Multiple wheels; And
The power train that is configured to provide power to described multiple wheels, described power train comprises:
Motor; And
Inverter assembly, described inverter assembly has the inverter that is connected to described motor, and described inverter assembly is configured to:
Obtain the temperature of described inverter; And
Regulate the switching frequency of described inverter based on described temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012221423.2 | 2012-11-23 | ||
| DE102012221423 | 2012-11-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103840693A true CN103840693A (en) | 2014-06-04 |
| CN103840693B CN103840693B (en) | 2017-09-12 |
Family
ID=50803906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310093675.0A Expired - Fee Related CN103840693B (en) | 2012-11-23 | 2013-03-22 | For the method and system for the inverter for controlling vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103840693B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1941532A (en) * | 2005-09-28 | 2007-04-04 | 英业达股份有限公司 | Overheat protecting system of CPU and its method |
| JP2007276189A (en) * | 2006-04-04 | 2007-10-25 | Nissei Plastics Ind Co | Temperature control method of injection moulding machine |
| CN101997302A (en) * | 2010-08-13 | 2011-03-30 | 乌云翔 | Method for protecting electric/electronic device of high-power converter from overhigh temperature |
| CN102710158A (en) * | 2010-12-21 | 2012-10-03 | 住友重机械工业株式会社 | Inverter device |
-
2013
- 2013-03-22 CN CN201310093675.0A patent/CN103840693B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1941532A (en) * | 2005-09-28 | 2007-04-04 | 英业达股份有限公司 | Overheat protecting system of CPU and its method |
| JP2007276189A (en) * | 2006-04-04 | 2007-10-25 | Nissei Plastics Ind Co | Temperature control method of injection moulding machine |
| CN101997302A (en) * | 2010-08-13 | 2011-03-30 | 乌云翔 | Method for protecting electric/electronic device of high-power converter from overhigh temperature |
| CN102710158A (en) * | 2010-12-21 | 2012-10-03 | 住友重机械工业株式会社 | Inverter device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103840693B (en) | 2017-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101685141B (en) | Method and system for determining a state of charge of a battery based on a transient response | |
| US10059222B2 (en) | Battery temperature estimation system | |
| US11299063B2 (en) | Method and apparatus for controlling electric power flow in a battery system | |
| US8831806B2 (en) | Range estimation for a rechargeable energy storage system of a vehicle | |
| CN102463993B (en) | method for determining an estimated driving range for a vehicle | |
| US9365120B2 (en) | Techniques for enhanced battery pack recharging | |
| CN105988087B (en) | Battery open circuit voltage measurement using reverse current pulses | |
| US20100076704A1 (en) | Method and system for determining a state of charge of a battery | |
| US20140214268A1 (en) | Temperature compensated battery parameter estimation | |
| Jeong et al. | Control analysis and model validation for BMW i3 range extender | |
| US9358892B1 (en) | System and method for pre-charging a hybrid vehicle for improving reverse driving performance | |
| CN102906993A (en) | Control apparatus and control method for motor | |
| US8935025B2 (en) | Hybrid battery power limit control | |
| CN104786854B (en) | The method and system that rechargeable energy storage system for vehicle is managed | |
| US20200062124A1 (en) | Electrical distribution system component protection systems and methods | |
| Kollmeyer et al. | Optimal performance of a full scale li-ion battery and li-ion capacitor hybrid energy storage system for a plug-in hybrid vehicle | |
| EP3585642B1 (en) | A method and arrangement for balancing a battery pack | |
| CN102033542B (en) | Method and system for monitoring power electronics controllers in automotive electrical systems | |
| CN108382247A (en) | The control method and electric vehicle of electric vehicle | |
| CN106476795B (en) | Engine control apparatus and method for hybrid vehicle | |
| Abdellahi et al. | Exploring the opportunity space for high-power li-ion batteries in next-generation 48V mild hybrid electric vehicles | |
| CN103840693A (en) | Method and system for controlling inverter of vehicle | |
| US9091738B2 (en) | Vehicle battery pack cell voltage determination | |
| Sen et al. | Performance Analysis and Evaluation of Fuel Economy for Fuel Cell Hybrid Electric Vehicles Under Different Driving Cycles | |
| US20230364998A1 (en) | Control of traction battery based on tab temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 Termination date: 20210322 |