The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2003
Filed:
Apr. 30, 2002
Katsuhiko Furukawa, Utsunomiya, JP;
Sadao Shinohara, Utsunomiya, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An inverter control apparatus is provided which controls a resonant soft switching inverter circuit according to the operational principle that the number of the resonant inductors be reduced. When the three phase control signal of the control CPU changes from the (1, 0, 0) state to (0, 0, 1), the drive signal generating device causes a current to flow to the inductor Lr by making the auxiliary switching elements conductive, and when the current I flowing to the inductor Lr is the same as the maximum among the currents I , I and I flowing through the load, turns OFF the IGBT Q and IGBT Q Next, the voltage sensors Vs and Vs which are connected to the IGBTs Q and Q of the main switching circuit, detect whether or not the voltage across the collector terminal and emitter terminal has become “zero”, and when the outputs Z and Z of the zero voltage detecting device output the respective logical values “1”, the device signal generating device outputs the switching control signals S and S that force the IGBTs Q and Q to conduct, and transit to a stationary condition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile