Multi-level frequency conversion driving apparatus with energy conservation unit
Title：
Multi-level frequency conversion driving apparatus with energy conservation unit
Application Number：
 200710063490
Application Date：
 2007/02/02
Announcement Date：
 2007/09/19
Pub. Date：
Publication Number：
 101039094
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02P 27/04H02M 7/527
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Li Yongdong, Rao Jianye
Key Words：
 driving apparatus, frequency conversion, Multi-level, energy conservation unit
Abstract：
 The present invention belongs to the field of high voltage multilevel frequency conversion technology, characterized in that the main circuit composes of a H bridge series connection type frequency converter and a group of storage energy inverter devices. The H bridge series connection type frequency converter is powered by a multiple winding isolation transformer, the storage energy inverter device is connected with a passive power energy storage capacitor, the energy storage capacitor can be selected according to the corresponding system power level. The main switch device of the three-phase bridge arm of the frequency conversion driving device can choose the corresponding power semiconductor switch device according to the output voltage level and the different passing currents. The controller whose core is a high performance digital signal microprocessor forms the PWM control signal. The structure is added with a group of storage energy inverter devices in the base of the traditional H bridge series connection type frequency converter, so as to not only realize the purpose of using energy storage capacitor to store energy dynamically, but make the voltage harmonic content decrease, the present invention improves the efficiency and the performance of the frequency conversion driving device.
Claim：
Priority：
PCT：
LegalStatus：

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

Relevancy information



Other Patents of Same Inventor

Frequency-changing speed regulation driver by supplying power to both ends of windings of Three-phase asynchronous motor
Variable frequency driving device of 3KV-10KV middle-high voltage multi-level three-phase AC motor
Clamping five level variable frequency driving device utilizing internal and external ring double-group rectifier bridge



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