Vol.31  No.4  Oct. 2012

CONTENTS

Treatise and Report

Transformation of Sommerfeld integral formula between cylindrical coordinates and Cartesian coordinates…… HUO Xiao-yun, LEI Yin-zhao(1)

Study of calorimetric method to measure loss of super low loss angle core ………………………………………… WANG Jing-hui, Chen Wei(6)

Research on control strategy for four-leg inverter in distribution generation system………CHEN Hong-bing, ZHANG Xing, YANG Shu-ying(10)

Electromagnetic characteristic analysis of a planar transmit coil ……………………………WEI Shu-feng, YANG Wen-hui, WANG Hui-xian (15)

Modified rotor flux observer based on statically compensated voltage model…………………SONG Wen-xiang, RUAN Zhi-yong, YIN Yun(19)

Reactive power optimization based on adaptive induction-enhanced particle swarm algorithm  …………………… LIU Li-jun,CAI Jin-ding(24)

Speed sensor-less direct torque control of induction motors based on sliding-mode observer……………SUN Zhen-xing, ZHANG Xing-hua (29)

Induction machine model using flux linkage as state variables including saturation……………… DANG Jie, ZHANG Ming, SUN Xi-dong (34)

Study of oil-paper insulated transformers’ aging state based on depolarization current measurements

……………………………………………………………………………………………………… TANG Pan, YIN Yi ,WU Jian-dong, et al.(39)

Fault location of distribution network based on minimal coefficient of variation usingidentifying model

　　 ………………………………………… ……………………………………………………………QU Guang-long, YANG Hong-geng(43)

Partial discharge characteristics of twisted pairs for inverter-fed motor under square impulse voltage

 ………………………………………………………………………………………XU Hui-hui，WU Guang-ning，ZHU Guang-ya，et al.(48)

A practical fault locating adaptive algorithm for distribution network with distributed generation

………………………………………………………………………………………………… WU Le-peng, HUANG Chun, ZEN Zhao-xing(52)

Summary and Review

Input-to-output stability theory and its application on isolated power system……………ZHANG Xue-min, CHEN Lai-jun, MEI Sheng-wei(58)

New Technology Application

Study of temperature measurements with thermocouple under high-frequency magnetic field…… LIN Su-bin，CHEN Wei，WANG Jing-hui(62)

Study of miniaxial flow turbine in energy-saving cooling towers……………………GUO Run-rui，ZHANG Guo-qiang，SHI Jin-hua，et al.(66)

A magnetic field compensation system for laser MRI………………………………… ZHAO Wu-yi, WANG Hui-xian, WANG Zheng, et al.(71)

Applied research on a high-Q resonant wireless power transmission technology……… TANG Wei，YANG Rui-xia，GUO Zhi-tao，et al.(75)

Software and hardware design of intelligent monitor and control terminal for low-voltage distribution system

………………………………………………………………………………………………XU Jia-zhu, LI Xiao-fang, HUANG Ji-yuan, et al.(79)

A practical method for determining parameters of load model of distributed network with small hydro power

……………………… ………………………………………………………………ZHANG Yuan-sheng, LI Xin-ran, XIAO Yuan-yuan,et al.(83)

Applications of gas discharge tube for switching mode power supply……………………………………………Zhou Yan, YANG Chang-ye(88)

2012 I……………………………………………………………………………………………………………………………………………… (I)