APEMC 2015
#1
# EMC Laboratory, Automotive Research & Testing Center
N0.6, Lugong S. 7 th Rd. , Lukang Township , Changhua County 50544, Taiwan , R.O.C
1 phil@artc.org.tw
Abstract — In order to effectively resolve the environmental issues of energy consumption and the emission of exhaust, electric vehicle with green, clean and energy-saving characteristics has been developed and will become more and more popular on the road. Electric vehicle is powered by its traction battery and needs to be continually charged by coupling to the public power mains, which may result in some interference along the charging cables. To sufficiently prevent the mutual interference between electric vehicle and the power mains, the international vehicle regulation ECE R10 (rev4 & rev5) had put forth the measurement method of current harmonics on electric vehicle’s charging system. Therefore, this paper refers to vehicle
EMC compliant test procedures to study if the measurement result of current harmonics will be influenced by different measuring method or test duration when the electric vehicle is in
REESS (Rechargeable Energy Storage System) charging mode.
I. I NTRODUCTION
Due to the nonlinear impedance existed in electric home appliances and REESS used on electric vehicles, the current harmonic interference may be generated through the power distribution network, as shown in Fig. 1. Concerning the measurement of current harmonics, IEC 61000-3-2 standard is mainly for electric home appliances, while ECE R10 is specifically for electric vehicles.
result in different measurement results. Therefore, in order to make a comparison of these differences and find a correlation, this paper will make an actual experiment of current harmonics for electric vehicle in REESS charging mode in accordance with the test configuration and procedure defined in ECE R10 and IEC 61000-3-2.
TABLE I
THE MEASUREMEN METHOD DEFINED IN ECE REGLATION AND
IEC STANDARD
Experiment Test standard
1 st
2 nd
3 rd
ECE R10-rev4
ECE R10-rev5
IEC 61000-3-2
Measurement method
The vehicle shall be in configuration "RESS charging mode coupled to the power grid" at rated power until the AC current reached at least 80 per cent of its initial value.
The REESS shall be in charging mode. The state of charge (SOC) of the traction battery shall be kept between 20 per cent and 80 per cent of the maximum SOC during the whole time duration of the measurement
On the DC output termination consume rated power resistive load
In this paper, one electric vehicle with a rated current of
15A will be used as the experimental platform. The first experiment will follow ECE R10-rev4 measurement method described in TABLE I to measure the odd and even current harmonics up to the fortieth harmonic based on the measurement configuration defined in ECE R10-rev4, as shown in Fig. 2. The actual measurement setup is shown in
Fig. 3 and it takes 3 hours to finish one complete test. TALBE
II shows the final measured data.
Fig. 1 The harmonic interference generated by electrical home appliances or electric vehicles through power distribution network
II. T HE PURPOSE AND METHOD OF THE CURRENT HARMONIC
MEASUREMENT
TABLE I shows the measurement methods of current harmonics for electric vehicle at different conditions defined in ECE regulation and IEC standard separately. Different types of traction batteries and the charging circuitry may
Fig. 2 A single-phase harmonic measurement configuration (ECE R10-rev4)
978-1-4799-6670-7/15/$31.00 Copyright 2015 IEEE

APEMC 2015
Fig. 3 An actual single-phase harmonic measurement setup (ECE R10-rev4)
Fig. 5 An actual single-phase harmonic measurement setup (ECE R10-rev5)
TABLE II
THE FIRST SET OF EXPERIMENTAL TEST DATA
Harmonic number
(n)
5
7
1
3
9
11
13
15 ≤ n ≤ 39(max)
2
4
6
8 ≤ n ≤ 40(max)
Measured maximum harmonic current (A)
Odd harmonics
13.531
0.312
0.131
0.164
0.051
0.079
0.051
0.055
Even harmonics
0.010
0.004
0.004
0.004
TABLE III
THE SECOND SET OF EXPERIMENTAL TEST DATA (TEST DURATION:
10 MIN)
1
3
5
7
9
11
13
15 ≤ n ≤ 39(max)
2
4
6
Harmonic number
(n)
8 ≤ n ≤ 40(max)
Measured maximum harmonic current (A)
Odd harmonics
15.629
0.404
0.157
0.186
0.058
0.075
0.054
0.063
Even harmonics
0.011
0.003
0.004
0.005
The second experiment will follow ECE R10-rev5 measurement method described in TABLE I to measure the odd and even current harmonics up to the fortieth harmonic based on the measurement configuration defined in ECE R10rev5, as shown in Fig. 4. The actual measurement setup is shown in Fig. 5 and the final measured data will be obtained at three different test duration, 10 minutes, 30 minutes and 1 hour, as shown in TALBE III, TABLE IV and TALBE V separately.
TABLE IV
THE THIRD SET OF EXPERIMENTAL TEST DATA (TEST DURATION: 30
MIN)
7
9
11
1
3
5
13
15 ≤ n ≤ 39(max)
2
4
6
Harmonic number
(n)
8 ≤ n ≤ 40(max)
Measured maximum harmonic current (A)
Odd harmonics
15.83
0.389
0.144
0.186
0.061
0.075
0.056
0.057
Even harmonics
0.012
0.004
0.004
0.005
Fig. 4 A single-phase harmonic measurement configuration (ECE R10-rev5)

APEMC 2015
TABLE V
THE FOURTH SET OF EXPERIMENTAL TEST DATA (TEST DURATION:
1 HOUR)
Harmonic number
(n)
5
7
1
3
9
11
13
15 ≤ n ≤ 39(max)
2
4
6
8 ≤ n ≤ 40(max)
Measured maximum harmonic current (A)
Odd harmonics
13.691
0.300
0.131
0.167
0.051
0.079
0.052
0.054
Even harmonics
0.010
0.004
0.003
0.003
III. C ONCLUSIONS
Through the actual experiment using three different measurement methods described in TABLE I, five sets of test data were obtained. Fig. 6 shows the correlation of these harmonic test results. Except for the fourth set of test data whose initial value of odd harmonic is lower because of more
First value (3hour )
Second value (10min)
Thrid value (30min)
Fourth value (1 hour)
Fifth value (10min)
Harmonic limit
The third experiment will follow the measurement method specified in Appendix C, IEC 61000-3-2 to measure the odd and even current harmonics up to the fortieth harmonic. The vehicle body will be used as the termination of DC output directly and the measurement configuration is similar to that defined in ECE R10-rve4, as shown in Fig. 2. Perform the measurement of current harmonic for 10 minutes and the final measured data is shown in TABLE VI.
After comparison on these five sets of test data, it’s obvious that the measured values won’t vary a lot with the different test duration. Therefore, one conclusion can be reached that the accurate values of harmonics could be measured at shorter time duration (10 min) by the measurement method defined in
ECE R10-rev5.
TABLE VII
TEST DURATION FOR EACH EXPERIMENT
Experiment Measurement method Test duration
1 st ECE R10-rev4 3 hour
ECE R10-rev5 10min
2 nd ECE R10-rev5
ECE R10-rev5
30min
1hour
3 rd IEC 61000-3-2 10min
TABLE VI
THE FIFTH SET OF EXPERIMENTAL TEST DATA (TEST DURATION: 10
MIN)
Harmonic number
(n)
5
7
1
3
9
11
13
15 ≤ n ≤ 39(max)
2
4
6
8 ≤ n ≤ 40(max)
Measured maximum harmonic current (A)
Odd harmonics
15.885
0.357
0.133
0.175
0.063
0.077
0.059
0.059
Even harmonics
0.011
0.006
0.003
0.004
consumption on battery for longer test duration, other sets of test data have more coincident trend.
2.500
2.000
1.500
1.000
0.500
0.000
2 3 4 5 6
Harmonic number n
Fig. 6 Correlation of harmonic test results for different test conditions
ARTC EMC LAB is capable of performing the measurement of harmonics stipulated in ECE R10-rev4, ECE
R10-rev5 and IEC 61000-3-2. Through the study in this paper, it’s possible to provide the best test option if the client has the relevant test demand in the future.
R
7 8 9 11 13 15
EFERENCES
[1] Economic Commission for Europe Regulation No. 10 Version 4,
March. 2012.
[2] Economic Commission for Europe Regulation No. 10 Version 5,
October. 2014.
[3] Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic current emissions (equipment input current ≤16 A per phase) ,
April. 2009.
[4] Electromagnetic compatibility (EMC) – Part 3-12: Limits – Limits for harmonic currents produced by equipment connected to public lowvoltage systems with input current >16 A and ≤75 A per phase , May.
2011.
[5] 車輛安全檢測基準 第五十六之二
[6] SAE J1772 SAE Electric Vehicle Conductive Charge Coupler
[7] CNS 14934-2 電磁相容 – 限制值 – 第 2 部 : 諧波電流發射 ( 設備每
相輸入電流在 16A 以下 ) 之限制值
[8] CNS 14934-4 電磁相容－限制值－第４部：額定電流大於１６Ａ
之設備於低電壓電源系統中諧波電流發射之限制值