Original document(9 pages)  中文版
    The present invention discloses passive zero on/off automatic excitation cut-off device and method. Said invention utilize passive electric power electronic device assembling plurality of function group to form topology network connection, providing powerful absorbing harmonic overvoltage function, once receiving demagnetization instruction, double starting up function group action, switching-on function discharging channel, function group rapid discharging transferring magnetic field current, reverse charging establishing voltage to conduct demagnetization resistor to complete demagnetization. Said invention can greatly improve demagnetization performance and save cost by more than 50 per cent.
Application Number
申请号		 200510019636 Application Date
申请日		 2005.10.19
Title 名称 Passive zero breaking automatic de-excitation device and method
Publication Number
公开号		 1829028 Publication Date
公开日		 2006.09.06
Approval Pub. Date Granted Pub. Date
International Classification 分类号 H02H7/06
Applicant(s) Name
申请人		 Gezhouba Hydropower Plant
Address 地址 443002
Inventor(s) Name 发明人 Huang Dake, Pan Jiacai
Attorney & Agent 代理人

  
Motor protector
Quick-break protection device and method with power direction in motor protection measuring and controlling device
Short-circuit protection circuit with self-recovering function
Electronic component power-off protection circuit
Lightningproof circuit and immersion type piezoresistance liquid level transmitter with the same
Lightning surge protection circuit and radio-frequency signal processing device having the same
Building electric fire hidden trouble alarm power distribution method and its circuit
Method and apparatus for carrying out combining-net using voltage control type inverter
Battery device with wireless charging system and its method
Electronic apparatus system, and operation control method
Google
Note:All patent data come from State Intellectual Property Office of the People's Republic of China. If there were discrepancies between here and the State Intellectual Property office, the later is more accurate. The patent data is only for public exchange and learning purposes. We are not responsible for the adverse consequences with unverified use of the data.