Method for reducing losses during the commutation process
Patent 6434019 Issued on August 13, 2002. Estimated Expiration Date: 
June 4, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 4, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesControl device of the transistor bases of an inverter arm Non zero-voltage switching protection circuit Patent #: 5973943 InventorsAssigneeApplicationNo. 873506 filed on 06/04/2001US Classes:363/16, Having transistorized inverter363/56.05Having voltage protectionExaminersPrimary: Riley, ShawnAttorney, Agent or FirmForeign Patent References
International ClassH02M 003/335Foreign Application Priority Data1998-12-03 DEAbstractThe invention provides a method by which losses are reduced during the commutation of a free-running, driven power converter valve (T2) of an invertor phase (2) to a current-accepting power converter valve (T1) of said invertor phase (2). The current-accepting power converter valve (T1) is switched on at the beginning of the commutation process and the free-running, driven power converter valve (T2) is rapidly switched off as soon as the value of its drain voltage (UD) is zero.Other References
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