CN104881587A - Method for evaluating performance of electric vehicle charger - Google Patents
Method for evaluating performance of electric vehicle charger Download PDFInfo
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- CN104881587A CN104881587A CN201510334934.3A CN201510334934A CN104881587A CN 104881587 A CN104881587 A CN 104881587A CN 201510334934 A CN201510334934 A CN 201510334934A CN 104881587 A CN104881587 A CN 104881587A
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Abstract
The invention provides a method for evaluating performance of an electric vehicle charger and belongs to the technical field of electric vehicle charging facilities. A three-tier electric vehicle charger performance comprehensive evaluation system is established with a fuzzy analytical hierarchy process, and electrical performance and safety performance of the charger are taken as evaluation indexes, wherein the electrical performance mainly comprises efficiency, power factor, output current error, output voltage error, voltage stabilization accuracy, current stabilization accuracy, ripple factor, starting current and harmonic current; the safety performance mainly comprises insulation resistance, power frequency voltage withstanding, alternating current undervoltage, alternating current overvoltage, power phase shortage, output open circuit, output short circuit, outage restarting and over-temperature protection. The evaluation value is acquired with different modes according to difference of values of the safety performance and the electrical performance of the charger. The performance evaluation value of the charger is obtained by means of evaluation values of the indexes and weight of each evaluation index, and chargers in different technical schemes are compared and assessed.
Description
Technical field
The present invention relates to charging electric vehicle facility technology field, particularly a kind of electric automobile battery charger method of evaluating performance.
Background technology
It is power that electric automobile (BEV) refers to vehicle power, drives wheels travel with motor, meets the vehicle of road traffic, security legislation requirements.Due to less relative to orthodox car to environmental impact, its prospect is extensively had an optimistic view of.Rapidly, big-and-middle-sized pure electric coach is in the existing a large amount of use of China, and pure electric passenger vehicle is also about to enter the industrialization stage in current electric vehicle industrialization development.Electric automobile battery charger is a kind of equipment aiming at the Vehicular battery charging of electric automobile, the power inverter having specific function used when being and charging to battery.Charging set is the necessary equipment that electric automobile realizes energy supply, and domestic and international researchist has done a large amount of research work improving in charging set topological structure and consummating function etc.But, comparatively systematic research is also being lacked to adopting the charging set of different core technology to evaluate, and charging set is a multi objective complication system comprising many performances such as electric property, security performance, net side performance, environmental performance, reliability, how comprehensive performance evaluation carried out to charging set the becoming a problem demanding prompt solution of science.
Summary of the invention
The object of the invention is to overcome the above problems, a kind of electric automobile battery charger method of evaluating performance of science is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of electric automobile battery charger method of evaluating performance, adopts Fuzzy AHP to construct electric automobile battery charger performance synthesis appraisement system.Described electric automobile battery charger performance synthesis appraisement system its form by three layers, ground floor is electric automobile performance synthesis appraisement system, the electric property of second layer electric automobile and security performance, third layer is the specific performance index of the electric automobile battery charger chosen, and wherein the electric property of electric automobile battery charger mainly comprises efficiency, power factor, output current error, output voltage error, the precision of voltage regulation, precision of steady current, ripple factor, starting current and harmonic content.The security performance of electric automobile battery charger mainly comprises insulation resistance, industrial frequency withstand voltage, AC undervoltage, interchange overvoltage, power phase shortage, output open circuit, output short-circuit, power-off restarting and overheat protector.According to the security performance of charging set and the difference of electric property value, obtain the evaluation of estimate of index in different ways, and adopt 0.1 ~ 0.9 scale to give quantity scale method acquisition judgment matrix, then by arithmetic mean method, fuzzy complementary matrix (judgment matrix) is comprehensively obtained to the weight vectors of each performance index.Drawn the performance evaluation value of charging set by the evaluation of estimate of index and the weight of each evaluation index, carry out contrasting to the charging set of different technologies scheme and assess.
Further, whether the index of described security performance reaches safety standard with actual measured results or possesses the defencive function acquisition metrics evaluation value of regulation.
Further, the method that in the index of described electric property, output voltage error, output current error, the precision of voltage regulation, precision of steady current, ripple factor adopt index actual measured value to compare with master gauge definite value obtains the evaluation of estimate of index.
Further, in the index of described electric property, efficiency, power factor, current harmonics adopt " extremum method " to carry out to index the evaluation of estimate that nondimensionalization process obtains index.
The present invention compared to the prior art, have the following advantages and effect: the present invention adopts Fuzzy AHP to construct three layers of electric automobile battery charger performance synthesis appraisement system, ground floor is electric automobile performance synthesis appraisement system, the electric property of second layer electric automobile and security performance, third layer is the specific performance index of the electric automobile battery charger chosen, and appraisement system is succinct, clear.Adopt 0.1 ~ 0.9 scale to give quantity scale method and obtain judgment matrix, then fuzzy complementary matrix (judgment matrix) is comprehensively obtained to the weight vectors of each performance index by arithmetic mean method, avoid man's activity.The present invention can provide effective detection for professional testing agency or producer, assess the ways and means of electric automobile equipment performance state, and methodological science, applicability is strong.
Accompanying drawing explanation
Fig. 1 is electric automobile battery charger performance synthesis evaluation system structure figure
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
A kind of electric automobile battery charger method of evaluating performance, is characterized in that adopting Fuzzy AHP (Fuzzy AnalyticalHierarchy Process, FAHP) to construct three layers of electric automobile battery charger performance synthesis appraisement system.Electric automobile battery charger performance synthesis evaluation system structure figure shown in Fig. 1.Electric automobile performance synthesis appraisement system forms by three layers, ground floor is electric automobile performance synthesis appraisement system, the electric property of second layer electric automobile and security performance, third layer is the specific performance index of the electric automobile battery charger chosen, wherein the electric property of electric automobile battery charger mainly comprises efficiency (E1), power factor (E2), output current error (E3), output voltage error (E4), the precision of voltage regulation (E5), precision of steady current (E6), ripple factor (E7), starting current (E8) and harmonic current (E9).The security performance of electric automobile battery charger mainly comprises insulation resistance (S1), industrial frequency withstand voltage (S2), AC undervoltage (S3), exchanges overvoltage (S4), power phase shortage (S5), output open circuit (S6), output short-circuit (S7), power-off restarting (S8) and overheat protector (S9).
1. the process of metrics evaluation value
Safe performance indexes S1 ~ S9 is qualitative index, and the evaluation of estimate of index is taken as switching value.When test result reaches safety standard or possess the defencive function of regulation, metrics evaluation value gets 1; When test result does not reach safety standard or do not possess the defencive function of regulation, metrics evaluation value gets 0.
Electricity function index E3, E4, E5, E6, E7 and E8 adopt the method for formula (1), and the method compared with master gauge definite value with index actual measured value obtains the evaluation of estimate of These parameters.
Wherein α---metrics evaluation value;
X---index actual measured value;
C---indicators standard value.
Electricity function index E1, E2 and E9, wherein E1, E2 are forward index, and namely metrics evaluation value is directly proportional to index actual value (absolute value), and E9 is reverse index, and namely metrics evaluation value and index actual value (absolute value) are inversely proportional to.Adopt " extremum method " to carry out nondimensionalization process to index, the computing method of metrics evaluation value are shown in formula (2).
(formula 2)
Wherein α---metrics evaluation value;
The maximum possible value of M---index;
The minimum possibility value of m---index;
X---index actual measured value.
Indices evaluation of estimate V can be obtained, V=[α by above-mentioned disposal route
e1..., α
e9, α
s1..., α
s9], wherein α
ei, α
sibe respectively the evaluation of estimate of electric property and security performance indices.
2. Judgement Matricies
Adopt 0.1 ~ 0.9 scale to give quantity scale, between two one-level judgment matrix R is obtained more respectively to n element
eSwith secondary judgment matrix R respectively
efor and R
s.
Arithmetic mean method is adopted to carry out comprehensively, obtaining K by formula (3) to fuzzy complementary matrix (judgment matrix)
n × n.
Wherein k
ij---matrix K
n × nelement;
R
ij---judgment matrix R
n × nelement, wherein i, j, k=1,2 ..., n.
Work as K
n × nduring for Fuzzy consistent matrix, the weight of each element can be expressed as formula (4).
Wherein w
i---each element weights;
A---the constant produced in weight derivation,
Obtaining one-level weight vectors is according to the method described above W
eSwith secondary weight vectors W
eand W
s.After combination calculates, obtaining final weight vectors is W
t.
3. evaluation method
According to the electric automobile battery charger performance synthesis appraisement system set up, the method for evaluating performance of charging set is formula (5), carries out comprehensive evaluation by the comprehensive evaluation value of charging set indices to the performance of charging set.
P=V × W
t(formula 5)
Wherein P---comprehensive evaluation value;
V---indices evaluation of estimate, V=[a
e1..., a
e9, a
s1..., a
s9], wherein a
ei, a
sibe respectively the evaluation of estimate of electric property and security performance indices.
The weight vectors of W---indices, W=[w
e1..., w
e9, w
s1..., w
s9], wherein w
ei, w
sibe respectively the final weight of electric property and security performance indices.
Above content described in this instructions is only made for the present invention illustrating.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of instructions of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (9)
1. an electric automobile battery charger method of evaluating performance, is characterized in that: adopt Fuzzy AHP to construct electric automobile battery charger performance synthesis appraisement system.
2. a kind of electric automobile battery charger method of evaluating performance according to claim 1, it is characterized in that: described electric automobile battery charger performance synthesis appraisement system its form by three layers, ground floor is electric automobile performance synthesis appraisement system, the electric property of second layer electric automobile and security performance, third layer is the specific performance index of the electric automobile battery charger chosen.
3. a kind of electric automobile battery charger method of evaluating performance according to claim 2, is characterized in that: described electric property mainly comprises efficiency, power factor, output current error, output voltage error, the precision of voltage regulation, precision of steady current, ripple factor, starting current and harmonic current.
4. a kind of electric automobile battery charger method of evaluating performance according to claim 2, is characterized in that: described security performance mainly comprises insulation resistance, industrial frequency withstand voltage, AC undervoltage, interchange overvoltage, power phase shortage, output open circuit, output short-circuit, power-off restarting and overheat protector.
5. a kind of electric automobile battery charger method of evaluating performance according to claim 4, is characterized in that: whether the index of described security performance reaches safety standard with actual measured results or possess the defencive function acquisition metrics evaluation value of regulation.
6. a kind of electric automobile battery charger method of evaluating performance according to claim 3, is characterized in that: the method that in the index of described electric property, output voltage error, output current error, the precision of voltage regulation, precision of steady current, ripple factor adopt index actual measured value to compare with master gauge definite value obtains the evaluation of estimate of index.
7. a kind of electric automobile battery charger method of evaluating performance according to claim 6, is characterized in that: in the index of described electric property, efficiency, power factor, current harmonics adopt " extremum method " to carry out to index the evaluation of estimate that nondimensionalization process obtains index.
8. a kind of electric automobile battery charger method of evaluating performance according to claim 1, it is characterized in that: described electric automobile battery charger performance synthesis appraisement system adopts 0.1 ~ 0.9 scale to give quantity scale method and obtains judgment matrix, then by arithmetic mean method, fuzzy complementary matrix is comprehensively obtained to the weight vectors of each performance index.
9. a kind of electric automobile battery charger method of evaluating performance according to claim 1, it is characterized in that: described electric automobile battery charger performance synthesis appraisement system obtains the evaluation of estimate of each performance index with the weighted value that the evaluation of estimate of each performance index is multiplied by each performance index, and carries out the comprehensive evaluation of charging set performance with this evaluation of estimate.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105740617A (en) * | 2016-01-28 | 2016-07-06 | 中国电子科技集团公司第十研究所 | Integrated antenna feed system quality degree measuring method |
| CN106526395A (en) * | 2017-01-03 | 2017-03-22 | 重庆长安汽车股份有限公司 | End-of-line detection system of charging pile |
| CN106557637A (en) * | 2016-12-01 | 2017-04-05 | 天津出入境检验检疫局工业产品安全技术中心 | Safety performance evaluation method of energy storage product |
| CN106780111A (en) * | 2016-11-24 | 2017-05-31 | 广州供电局有限公司 | Power transmission cable synthetical condition assessment method and system |
| CN111612310A (en) * | 2020-04-28 | 2020-09-01 | 中国汽车技术研究中心有限公司 | Comprehensive test evaluation method for plug-in hybrid electric vehicle |
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| US20120253715A1 (en) * | 2011-03-31 | 2012-10-04 | Fuji Jukogyo Kabushiki Kaisha | Electric charging system |
| CN104462812A (en) * | 2014-12-06 | 2015-03-25 | 国网浙江省电力公司电动汽车服务分公司 | Electromobile energy supply cost analysis method based on hierarchy analysis method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105740617A (en) * | 2016-01-28 | 2016-07-06 | 中国电子科技集团公司第十研究所 | Integrated antenna feed system quality degree measuring method |
| CN106780111A (en) * | 2016-11-24 | 2017-05-31 | 广州供电局有限公司 | Power transmission cable synthetical condition assessment method and system |
| CN106557637A (en) * | 2016-12-01 | 2017-04-05 | 天津出入境检验检疫局工业产品安全技术中心 | Safety performance evaluation method of energy storage product |
| CN106526395A (en) * | 2017-01-03 | 2017-03-22 | 重庆长安汽车股份有限公司 | End-of-line detection system of charging pile |
| CN111612310A (en) * | 2020-04-28 | 2020-09-01 | 中国汽车技术研究中心有限公司 | Comprehensive test evaluation method for plug-in hybrid electric vehicle |
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