power transformer having harmonic suppression function and based on harmonic paraphase principle
Title：
power transformer having harmonic suppression function and based on harmonic paraphase principle
Application Number：
 200410009627
Application Date：
 2004/09/30
Announcement Date：
 2005/03/30
Pub. Date：
 2007/05/23
Publication Number：
 1601844
Announcement Number：
 1317799
Grant Date：
 2007-5-23
Granted Pub. Date：
 2007-5-23
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02J 3/01
Applicant(s)：
 Tsinghua univ
Inventor(s)：
 Wang Shanming, Wang Xiangheng, Li Longnian
Key Words：
 power transformer, harmonic suppression function, harmonic paraphase principle
Abstract：
 The disclosed power transformer is in use for restraining and weakening influence on load at secondary side from harmonic in primary side. The transformer includes harmonic inverting circuit composed of cascaded inductance and capacitance. Parameters of inductance and capacitance are so selected that phase difference between phases of n order harmonic voltage obtained from voltage division on capacitor and phase of n order harmonic voltage obtained from power source is 180 degrees. Meanwhile, their voltage phases of fundamental wave obtained from said voltage division and from power source are equal basically. Two independent power transformers with same capacity and transformation ratio are adopted in the invention, and each capacity is half of total capacity. First transformer is connected to power source directly, and second transformer through harmonic phase inversion branch is connected to power source. Secondary sides of two transformers are cascaded to provide power for load.
Claim：
Priority：
PCT：
LegalStatus：

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information



Other Patents of Same Inventor

Optimized method of main protective configuration for internal fault of largesize motor stator coil
Gamma/ transformer triangle winding circumfluence algorithm method and device
Large-scale steamer generator neutral point lead-out mode and arrangement protecting method



News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo