《电工电能新技术》
· Introduction ·
· Contents ·
2016.1
2015.12
2015.11
2015.10
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2015.8
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2015.3
2015.2
2015.1
2014.12
2014.11
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2014.3
2014.2
2014.1
2013.4
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2013.2
2013.1
2012.4
2012.3
2012.2
2012.1
2011.4
2011.3
2011.2
2011.1
2010.4
2010.3
2010.2
2010.1
2009.4
2009.3
2009.2
2009.1
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2008.3
2008.2
2008.1
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· Abstracts ·
2016.1
2015.12
2015.11
2015.10
2015.9
2015.8
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2015.1
2014.12
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2014.9
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2014.5
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2014.3
2014.2
2014.1
2013.4
2013.3
2013.2
2013.1
2012.4
2012.3
2012.2
2012.1
2011.4
2011.3
2011.2
2011.1
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2010.3
2010.2
2010.1
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2009.3
2009.2
2009.1
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2008.3
2008.2
2008.1
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2007.3
2007.2
2007.1
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2004

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《电工电能新技术》2016年第1期目录
第35 卷第1 期(总第151 期)  2016 年1 月
目  次

论文报告
IRP 理论和IEEE Std 1459⁃2010 在变流器驱动电机能效测试中的应用比较
 ...

  2014.3

2014.3
  日期:2014-04-01     【背景色 杏仁黄 秋叶褐 胭脂红 芥末绿 天蓝 雪青 灰 银河白(默认色) 】  【字体:
 

Equivalent approach for AC / DC power systems cascading failure analysis
ZHANG Zhen⁃an, ZHANG Xue⁃min, QU Hao⁃yuan, LI Xiao⁃meng, YAO Rui, ZHANG Xiang⁃yu
(1. Henan Power Grid Company, Electric Power Research Institute, Zhengzhou 450052, China;
2. Dept. of Electrical Engineering, State Key Lab of Control and Simulation of Power Systems and
Generation Equipments, Tsinghua University, Beijing 100084, China)
Abstract: In order to improve the efficiency of the cascading failure analysis, static equivalence method of AC/ DC
power grid is studied. First of all, the DC line is converted to AC parameters, then the extended ward equivalent
method is used to reduce external grid. Based on the equivalent impedance and power provided by existing equivalent methods, the capacity and failure rate of equivalent devices are given in this paper. The AC equivalent imped⁃
ance method and the equivalent load method, which are used to deal with the HVDC, are compared. And the proposed method was validated by IEEE 118 system for the effectiveness of cascading failure analysis.
Key words: AC/ DC power grid; cascading failure; extended Ward equivalent

Transmission network planning considering balance of branches load rate
NIE Hong⁃zhan, ZHENG Peng⁃fei, LI Shuai, MA Ying⁃dong
(School of Electrical Engineering, Northeast Dianli University, Jilin 132012, China)
Abstract: Differential evolution algorithm’s searching speed is fast, but strategy is too onefold and there are pre⁃
mature convergence phenomenon. Chaos optimization algorithm has randomness, ergodicity, so the characteristic of
the global search ability is strong, but the convergence speed is slow. Chaos differential evolution algorithm is put
forward which complements advantages for each other. Cat mapping is uesd to replace the traditional Logistic map⁃
ping to improve the calculation speed of chaos algorithm, and the global and local search ability of the chaos differ⁃
ential evolution algorithm is improved by changing the mutation and cross strategies and increasing chaos disturb⁃
ance. The comprehensive investment operation cost and the branches load rate variance are used as the transmission
network planning model function which considers the economy of the scheme and security, and is used to optimize
the heavy and light load lines in order that the distribution of power flow to be more reasonable. Through the 18
nodes example analysis the effectiveness of the model and algorithm is feasible.
Key words: transmission network planning; branches load rate variance; differential evolution algorithm; chaos
optimization algorithm; chaos differential evolution algorithm

Researches on electro⁃thermal model for junction
temperature prediction in IGBT modules
WU Yan⁃song, LUO Hao⁃ze, LI Wu⁃hua, HE Xiang⁃ning, DENG Yan
(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)
Abstract: With the development of IGBT module and its increase of power level and density, system failures
caused by junction temperature problem due to power loss are more and more severe. Deep researches on device
and heatsink system can contribute to power device package design, device selection, system layout and inverter
stable operation. This paper models and extracts the transient thermal impedance through FEM(Finite Element
Method), with simulation results in line with manufacturer’ s datasheet. It also verifies the thermal impedance
curve’s universality and sets up electro⁃thermal model based on thermal characteristic RC equivalent network,
which can be used for dynamic junction temperature prediction. Key words: transient thermal impedance; FEM; electro⁃thermal model; dynamic junction temperature prediction

Exploration of switching characteristics of SiC⁃based power devices
ZHAO Bin, QIN Hai⁃hong, MA Ce⁃yu, YUAN Yuan, ZHONG Zhi⁃yuan
(Jiangsu Key Laboratory of New Energy Generation and Power Conversion (Nanjing University of
Aeronautics and Astronautics), Nanjing 210016, China)
Abstract: Compared with silicon devices, SiC⁃based power devices feature high voltage capability with low switc⁃
hing losses and high operating temperature. The differences of switching characteristics between SiC⁃based devices
and Si⁃based devices are analyzed. Then, a buck converter test bench is built, and the switching characteristics of
SiC⁃based devices and Si⁃based devices are tested and compared. Experimental results verify the correctness of the
above analysis, and provide design guidelines for the proper selection and application

Analysis and design of output current ripple reduction
in forward converter with integrated magnetics
LU Zeng⁃yi, CHEN Wei, CHEN Zhi⁃yu
(1. Delta Electronics (Shanghai) Co. Ltd. , Shanghai 201209, China;
2. College of Electrical Engineering and Automation of Fuzhou University, Fuzhou 350108, China)
Abstract: Based on the equivalent circuit model of integrated magnetics(IM), the output current ripple reduction
of the existing IM forward converter 1 is investigated and the characteristic of the output current steering is ex⁃
plored. Moreover, zero current ripple design can be extended to the IM forward converter 2, where the flux distri⁃
bution and the winding loss are discussed. Finally, the prototypes are built for verification.
Key words: magnetic integration; forward converter; current ripple steering; zero ripple

Method of current regulator design for PWM rectifier
at low switching frequency
SONG Wen⁃xiang, DONG Ying, ZHU Hong⁃zhi
(Shanghai University, School of Mechatronic Engineering and Automation, Shanghai 200072, China)
Abstract: At low switching frequency, severe cross⁃coupling will occur if current regulator adopting traditional dis⁃
crete method is used to control PWM rectifier, moreover, the whole system even cannot work normally. In the pa⁃
per a simple discrete⁃time domain PWM rectifier is developed that includes the delay associated with PWM. A dis⁃
crete time domain current regulator is designed according to this model without tusin transformation, and closed⁃
loop system is not influenced by sampling period. Simulation results compared with other regulators demonstrate that
direct discrete current regulator has better performance.
Key words: PWM rectifier; low switching frequency; discrete current regulator; direct design

Combined bi⁃directional step⁃up DC⁃DC converter mode inverters
with high frequency link
CHEN Yan⁃hui, CHEN Dao⁃lian
(Power Electronics and Drive Research Institute, Fuzhou University, Fuzhou 350108, China)
Abstract: The circuit configuration and topological example of the combined bi⁃directional step⁃up DC⁃DC convert⁃
er mode inverter are proposed. This inverter is constituted of two same isolated bi⁃directional step⁃up mode DC⁃DC
converters which are connected in parallel on the input side and reversely connected in series on the output side.
The complementary and independent instantaneous voltage value feedback control strategy, and design criteria of the circuit parameters are deeply investigated. The theoretical analysis results indicated that when complementary
control strategy is adopted, the inverter has small variation range of duty cycle, low maximum voltage stress of pow⁃
er switches on the secondary winding, lower high⁃frequency ripples in input current and output voltage and conse⁃
quently it’s suitable for occasions with large variation range of input voltage. Otherwise, when independent control
strategy is adopted, the inverter has big variation range of duty cycle, high maximum voltage stress of power swit⁃
ches on the secondary winding, higher high⁃frequency ripples in input current and output voltage and consequently
it’s suitable for occasions with stable or small variation range of input voltage. Taking single forward mode circuit
as example, a 500VA 18⁃32VDC /115V 400Hz AC inverter prototype adopting complementary control strategy is
developed, and the test results are provided. Key words: isolated step⁃up mode DC⁃DC converter; bi⁃directional power flow; high frequency link; inverter

Research of electromagnetic compatibility optimization technology
of battery management system
LI Xu, WANG Li⁃fang, HE Ju⁃gang, WANG Zheng⁃sheng
(1. China Changan Automotive Engineering Institute, Chongqing 401120, China;
2. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China)
Abstract: The battery management system(BMS)is an important part of the electric vehicle energy management. It
provides important parameters of the vehicle control strategy. However, BMS works in an complex electromagnetic
environment of the electric vehicle, so improving the anti⁃electromagnetic interference performance of the BMS is
extremely essential to guarantee the safe and reliable operation of the vehicle. Based on hybrid electric vehicle
(HEV)platform of Changan Automobile Co., Ltd, the electromagnetic environment of HEV and its coupling mecha⁃
nism to BMS are researched. By the EMC optimization design the anti⁃electromagnetic interference performance of
the BMS is enhanced. Results show that the optimized BMS can be good adaptation in electric vehicle complex e⁃
lectromagnetic environment. Key words: electric vehicles; battery management system; electromagnetic compatibility; EMI

Robust and global optimizer based on ant colony algorithm
for inverse problems in electromagnetics
NIE Man, YANG Shi⁃you
(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)
Abstract: In real world design problems, the optimized solution is often very sensitive to small variations of the op⁃
timized decision parameters. Therefore, it is important to apply robust optimal techniques to find the optimal solu⁃
tion which has good performances in both objective function and robustness in the designed parameters against small
perturbations. However, existing robust optimal techniques have difficulties in efficiently finding final solutions of
inverse electromagnetic problems. In order to eliminate this problem, a fast ant colony optimization (ACO) algo⁃
rithm based robust and global optimizer is proposed. In the proposed algorithm, the structures of the algorithm are
redesigned, and methodologies to efficiently compute the robust performance parameters are proposed. The numeri⁃
cal optimization results of a case study showcase the merits of the proposed algorithm, and validate the effectiveness
of the proposed algorithm by comparing to the performance of different algorithms.
Key words: ant colony algorithm; inverse electromagnetic problems; optimization; robust design

Uniformity of stiffness coefficient of electromagnetic
railgun and formation of gouge
YANG Dan1,2, YUAN Wei⁃qun1,3, ZHAO Ying1,3, CHEN Yun1,2, WANG Xian⁃bin1,2, YAN Ping1,3
(1. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100190, China;
3. Key Laboratory of Power Electronics and Electric Drive, Chinese Academy of Science, Beijing 100190, China)
Abstract: Surface erosion and gouging are two defects in the electromagnetic launcher, in which gouging is the
main. During the electromagnetic launch, when the armature reaches a certain speed, there will be gouge on the
rail. Once gouging happens, it will affect the launch speed of the transmitter. If seriously, the rail must be aban⁃
doned. So, the avoiding of gouging helps to improve the life of the electromagnetic launcher. This paper simulates
a small square⁃bore launcher using ANSYS. Then the deformation and stiffness coefficient of rails under different
armature pressure are acquired, and the positions of gouge on rails made by different materials are studied. It is
found that stiffness coefficient of the rail of the experimental electromagnetic launchers distributes unevenly, which
is one of the reason why gouging is formed. According to this study, the optimization of the system structure is one
of the means to control and inhibit gouging, which provides a positive reference for the system designing of the elec⁃
tromagnetic launcher.
Key words: formation of gouging; stiffness coefficients; distribution of gouge

Review of energy storage technology for new energy power system
CONG Jing , SONG Kun , LU Hai⁃wei 3, GAO Xiao⁃feng , XIAO Bai
(1. School of Electrical Engineering,Northeast Dianli University, Jilin 132012, China;
2. Liaoning Provincial Electric Power Company Limited Power Electronic Research Institute,
Shenyang 110015, China; 3. Jilin Electric Power Co. Ltd. , Changchun 130021, China)
Abstract: This paper reviews the research status of energy storage technology for the new energy power system
which contains wind power. Firstly, the great significance of energy storage technology for power system containing
a high proportion of wind power is discussed. Secondly, the present research progress of various energy storage
technologies are systematically compared. On one hand, the paper described the theory of various energy storage
technologies and analyzed the characteristics of energy storage technologies. On the other hand, it also summarized
the advantages, problem and application range of various energy storage technologies. Thirdly, it adopted a new
method that coordinates a variety of energy storage technologies for new energy power system and combines energy
storage technology with large capacity and quick response. Lastly, it pointed out that optimal allocation of energy
storage in the new energy power system has become a subject which needs further research.
Key words: new energy power system; energy storage technology; wind power generation; renewable energy

Double closed loops control of PCC power flow of photovoltaic
microgrid and its application
CHEN Ren⁃feng, HUANG Shao⁃wei, CHEN Lai⁃jun, ZHAO Feng⁃fu, FU Dong⁃sheng, WANG Bin
(1. State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University,
Beijing 100084, China; 2. Xuancheng Power Supply Company, Xuancheng 242000, China)
Abstract: Stably controlling the tie⁃line power flow is one of the fundamental functions of photovoltaic micro⁃grid,
which can be achieved through power flow tracking control of the point of common connection (PCC). This paper
proposes a practical control system of the power flow of PCC, which is composed of the out⁃loop controller and inner⁃
loop controller. The out⁃loop controller is responsible for determining the direction and magnitude of the power com⁃
pensation, while the inner⁃loop controller is designed to achieve the accurate power flow tracking by using decoupled
P⁃Q control. Further, this control system is validated through the digital simulation and field experiments. Test re⁃
sults under a variety of operation conditions verify the effectiveness and feasibility of the proposed control system.
Key words: PV microgrid; power flow tracking control of PCC; ESS control; active power and reactive power control
 

Rationality analysis of dq transform applied for instantaneous
detection of voltage dip
LUO Chao, TAO Shun, XIAO Xiang⁃ning
(State Key Laboratory for Alternate Electrical Power System with Renewable Energy
Sources (North China Electric Power University), Beijing 102206, China)
Abstract: Voltage dip detection method based on dq transform can detect dip amplitude and phase transition quick⁃
ly and it has a good dynamic performance, therefore, it is applicable to instantaneous measurement and real⁃time
compensation for voltage dip, and is widely applied in power conditioning devices such as dynamic voltage regula⁃
tor. However, some domestic scholars and electric power professionals question whether the method based on dq
transform can detect the characteristic parameters of voltage dip. Firstly, this paper deduce the principle of the dq
transform detection method, and then makes a detailed analysis of its characteristics, which reveals that the method
is reasonable. Finally, it is verified by PSCAD simulation. The analysis and simulation results show that voltage dip
detection method based on dq transform is just a quasi⁃instantaneous method, but it still meets the requirement of
real⁃time detection and compensation applications. In practical applications, the design of phase⁃locked loop and
filter is very important because it has a great effect on dynamic performance and detection accuracy.
Key words: voltage dip; power quality; dq transform; dip amplitude; phase transition
 

Transformer circulation loss calculation and software design
LI Yan, ZHANG Zhen⁃hai, LI Guo⁃li, GAO Yan⁃chao
(Research Institution of Special Machines, Shenyang University of Technology, Shenyang 110870, China)
Abstract: This paper investigats the distribution of the winding leakage magnetic field of a transformer along the ra⁃
dial and axial direction by the numerical calculation method, and presents the advantages and disadvantages of the
analytical method and numerical method by the comparision of both methods. To calculate easily and to improve the
calculation accuracy, this paper obtains the transformer leakage magnetic field and automatic generation of wires
configuration by two methods,which are respectively the method of introduction of finite element calculation module
and the analytical method. A model about circulation loss calculation is presented based on the principle of integra⁃
tion, which is applicable to the various winding forms of transformer. This paper also designs a software to analyze
the loss of a 31500 kVA transformer with three different transposition methods of low voltage windings,and the va⁃
lidity and feasibility of this method are proved by means of the comparasion with the software and experimental re⁃
sult.
Key words: leakage magnetic field; wires configuration; principle of integral; circulation loss; transposition meth⁃
ods

Hardware⁃in⁃the⁃loop platform for permanent magnet
synchronous machine control
LIN Qian, GE Bao⁃ming, BI Da⁃qiang, LI Qiu⁃sheng
(1. School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China;
2. State Key Lab of Power System, Dept. of Electrical Engineering, Tsinghua University, Beijing 100084, China)
Abstract: To design and verify the performance of motor controller, a hardware⁃in⁃the⁃loop (HIL) platform is
presented for permanent magnet synchronous machine. The proposed permanent magnet synchronous machine model
is a phase domain model with inductance and flux profiles computed from the JMAG finite element analysis soft⁃
ware. The permanent magnet synchronous machine and three⁃phase IGBT inverter model are implemented on RT⁃
LAB which can be connected to a real DSP controller. The RT⁃LAB real⁃time simulation model runs at a 20 μs rate
and the results of HIL platform are compared with those of real objects. The difference of the fundamental current
amplitude is within 5%, which proves the effectiveness and accuracy of the HIL platform. By connecting the RT⁃
LAB real⁃time simulator to an external controller, this HIL platform allows high fidelity HIL simulation of motor
drives and enables the design engineers to test the system and the controller with an accurate, finite element based
motor model running in real⁃time.
Key words: permanent magnet synchronous machine; hardware⁃in⁃the⁃loop; RT⁃LAB


 
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