H02P 1/38

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
8294409 Control of pole-change induction motorsAug 18, 10Oct 23, 12HAMILTON SUNDSTRAND CORPORATION
7952316 Variable frequency reduced speed variation electric driveOct 05, 07May 31, 11HONEYWELL INTERNATIONAL INC.
7420351 Power-factor correction device for variable speed driveNov 13, 06Sep 02, 08SCHNEIDER TOSHIBA INVERTER EUROPE SAS
6946815 Switch for a variable-speed induction motorSep 09, 04Sep 20, 05Not available
6066935 Pole-changing asynchronous fan motor with continuously adjustable speedDec 02, 93May 23, 00SIEMENS AKTIENGESELLSCHAFT
6008616 Pole change induction motor and control apparatus and method for the sameDec 12, 95Dec 28, 99Kabushiki Kaisha Meidensha
5880571 Method of and system for controlling a variable speed induction motorSep 11, 97Mar 09, 99Sundstrand Corporation
5760567 Induced voltage reduction method and an induced voltage reduction apparatus for an induction motorDec 14, 95Jun 02, 98FANUC LTD
5650707 Inverter-controlled induction machine with an extended speed rangeSep 28, 95Jul 22, 97ELECTRIC POWER RESEARCH INSTITUTE, INC.
4751448 Armature winding for a static converter-fed electrical induction machineMar 09, 87Jun 14, 88SIEMENS AKTIENGESELLSCHAFT