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Patent Searching and Data


Title:
LOW SWITCH COUNT DIRECT AC-TO-AC POWER CONVERTER
Document Type and Number:
WIPO Patent Application WO/2014/105771
Kind Code:
A3
Abstract:
A load control device to control current flow to an AC load (10) includes a circuit (20) having line-side switche (22, 24, 26)s and floating-neutral side switches (28, 30, 32), along with a controller (46) connected to the circuit that is programmed to control the circuit so as to cause each of the line-side switches and each of the floating- neutral side switches to switch between an On condition or an Off condition to selectively operate the circuit in an active mode and a free-wheeling mode. A full phase voltage is provided to the AC load during the active mode and a zero voltage is provided to the AC load during the free-wheeling mode. The controller applies a modulating function to the circuit, so as to modulate a supply voltage to control a frequency and an average of a load voltage present across terminals of the AC load, thereby enabling variable frequency operation of the AC load.

Inventors:
FAMILIANT, Yakov, Lvovich (5030 W. Radcliffe Drive, Brown Deer, WI, 53223, US)
JANKOVIC, Zeljko, Radomir (2626 N. Newhall St, Milwaukee, WI, 53211, US)
LEQUESNE, Bruno, Patrice-Bernard (W133N6182 Hummingbird Way, Menomonee Falls, WI, 53051, US)
BHAVARAJU, Vijay (N104 W14643 Heritage Hills Parkway, Germantown, WI, 53022, US)
Application Number:
US2013/077375
Publication Date:
April 23, 2015
Filing Date:
December 23, 2013
Export Citation:
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Assignee:
EATON CORPORATION (1000 Eaton Boulevard, Cleveland, Ohio, 44122, US)
International Classes:
H02P27/16; H02M5/293
Foreign References:
US5949672A1999-09-07
Attorney, Agent or Firm:
ZIOLKOWSKI, Timothy, J. et al. (136 S. Wisconsin Street, Port Washington, Wisconsin, 53074, US)
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