Electric Engineering 2002 Issue 1 A Study on Asymmetry of Electric Motor and Open-phase Protective Model

A Study on Asymmetry of Electric Motor and Open-phase Protective Model
zhang lian ; chen hong yan

..............page:49-50

The PWM Control System Controlled by Fractional Direct Current Electric Motor through Regulating the Speed of Rotational Direction Change
chen qi han ; zhang mao qing ; jiang ping ; zhang bai sheng

..............page:51-52

New Product

..............page:54-55

bu jian duan dian yuan ups

..............page:56-57

The Current Status and Prospects for Switching Reluctance Motor
zhu jia hui ; liang yan ping

..............page:47-49

Reason for 10KV Inlet Wire Switch Being tripped incorrectly
li guo hua ; zhang xi liang

..............page:46,53

Quick Determination of the Leading-Out Wire Number in Simplex Winding △/2Y Two-Speed Electric Motor
zou run bao

..............page:45-45

A New Uniphase Sinusoid Inverter Power Source
liu xing ping

..............page:44-45

The Direct Current Power Source Specially Designed for Microplasma Oxidation Process
zuo hong qi ; jiang zhao hua ; liu zhao he

..............page:42-43

A Design for New Vehicular Electronic-Electromagnetic Composite Relay
heng yao fu ; chen shu jing

..............page:41-41

The Computer Line Protection of Xuji WXH(S)
xu jian an

..............page:39-40

The Three-Phase Electric Energy Metering with Mutual Induc-tors of Different Change Rate
zhao ling zuo

..............page:38-39

The Regulation and Setting of photoelectric Sensor
liao chang chu

..............page:36-37

The Principle of the Brushless Double-Fed Frequency Converter Speed Regulating Motor and Potential for Its Application
cui li ; xu fu rong

..............page:34-35

A Brief introduction to Medium Voltage Frequency Converter
he bao xing

..............page:33-33

Using shared Direct Current Bus Control to Replace Brake in Drawing Equipment Module Control
shao zhi feng

..............page:31-32

The Computer Monitoring of Direct Current System
zhao yi bo ; he xiang ning ; wang hui ; peng yong jin

..............page:30-31

The Application of Gearshift PID in Temperature Measurement System
rang yu qi ; cai han qiang ; wu qiang

..............page:28-29

Quasi-Square Wave Inverter Based on AT89C2051
zhang yan tian ; shen yu liang ; yu shi jie ; su jian hui

..............page:26-27

The Application of PLC in Automatic Switching-on of Reserve Power Source
yao ming ren

..............page:24-25

Pipe Tobacco Drying-Control System
ge yun wang ; song shu zhong

..............page:23-24

Frequency Measurement and Homochromous Grid Interconnection usinig PLC
feng bin ; zhou hong ; yang chen ; cheng hai hua

..............page:21-22

Points for Attention of The Parallel Operation of Main Trans-formers in Chemical Plant
chen yun jie

..............page:20-20

Error in Ground Resistance Measurement
lu zhi wei ; zhao li jun ; li ya jun

..............page:18-19

Handling the Stripping of 3150KVA Voltage Transformer at The Moment of Switching on
dong pei xian

..............page:17-18

Discussion About Repeat Grounding of TT System
zhang zuo

..............page:16,19

Polarity On-Line Test
chen xiao ming

..............page:14-15

The Energy Efficient Technology for Reactive On-the-Spot Compensation
zhu zong en

..............page:13-14

Error in Electric Energy Metering Caused by Connecting Secondary Circuit of PT Voltage Incorrectly
zhang zhi bin

..............page:4-5

The Elicitation Method for Structure Planning of Electric Power Grids
wang dong ping ; wang xu ; yang bing ; deng yi

..............page:5-6

Auto-Turning Ground Connection Equipment
weng li min ; chen yun ping ; shu li ping

..............page:7-8

Determination of The Best Dividing Position of Feed Line on Distribution Network Through 0.618 optimization
zhou zheng gui

..............page:8-9

The Technical Measures to improve Voltage Quality of County Electric Power Grids
zhang hong zhong

..............page:10-10

Improve the Return Circuit Controlled by Breaker
liao hui ying

..............page:11-12

The Application of Close Type Condenser and Reactor Series in Substation
fan hua

..............page:12

tian zheng ji tuan xin chan pin jie shao

..............page:59

Letters and Reply

..............page:60-61

A Starting circuit of Permanent Magnetic Synchronous Motor
du hong zhi ; cai feng

..............page:53-53