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Patent Searching and Data


Title:
HARMONIC NOISE REDUCTION
Document Type and Number:
WIPO Patent Application WO/2012/146248
Kind Code:
A3
Abstract:
The present invention relates to a method for regulating a set of first noise harmonics from a permanent magnet machine operatively connected to a power supply unit, the method comprising the step of injecting a second set of harmonics into a representation of a drive current provided to the electronic device in order to regulate at least part of the noise harmonics of the first set, wherein the harmonics of the second set is/are different from the noise harmonics of the first set. The invention further relates to a power supply unit for performing the method of the present invention.

Inventors:
ROMENESKO CHARLES J (US)
Application Number:
PCT/DK2012/000052
Publication Date:
May 02, 2013
Filing Date:
April 23, 2012
Export Citation:
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Assignee:
DANFOSS DRIVES AS (DK)
ROMENESKO CHARLES J (US)
International Classes:
H02P25/02; H02P29/00
Foreign References:
EP1553693B12007-12-19
US20050029982A12005-02-10
EP2012425A12009-01-07
Attorney, Agent or Firm:
DANFOSS A/S (Nordborgvej 81 L25, Nordborg, DK)
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