Title:
METHOD AND SYSTEM FOR REDUCING SWITCHING NOISE IN CHARGING DEVICE, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2018/139780
Kind Code:
A1
Abstract:
The present invention relates to a method and system for reducing switching noise in a charging device, and a non-transitory computer-readable recording medium. According to an aspect of the present invention, a method for reducing switching noise in a charging device is provided, the method comprising: a step of sensing an output current signal; and a step of controlling the switching frequency of the charging device on the basis of the output current signal, wherein, in the step of controlling the switching frequency, the switching frequency is controlled such that: when the magnitude of the output current signal is equal to or less than a first magnitude, the switching frequency is linearly increased; when the magnitude of the output current signal exceeds the first magnitude, the switching frequency is fixed to a switching frequency at the time when the output current signal has the first magnitude, and is maintained at the same; and when the magnitude of the output current signal exceeds a second magnitude, the switching frequency is linearly increased at a lower rate of increase than the rate of increase at which the switching frequency is increased when the magnitude of the output current signal is equal to or less than the first magnitude.
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Inventors:
WON IN SUNG (KR)
SON JI YEON (KR)
LEE DONG WOOK (KR)
KWON OH CHUL (KR)
SON JI YEON (KR)
LEE DONG WOOK (KR)
KWON OH CHUL (KR)
Application Number:
PCT/KR2018/000315
Publication Date:
August 02, 2018
Filing Date:
January 08, 2018
Export Citation:
Assignee:
KPOS CO LTD (KR)
International Classes:
H02M1/08; H02J7/00; H02M3/335; H03K17/16
Foreign References:
| KR101338934B1 | 2013-12-09 | |||
| KR101524314B1 | 2015-05-29 |
Other References:
LEE, JONG-CHAN ET AL.: "Switching Acoustic Noise & Thermal Loss Reduction Method through Power Circuit Parallel Construction of Electric Vehicle Propulsion Inverter", PROCEEDINGS OF 2013 POWER ELECTRONICS ANNUAL CONFERENCE, July 2013 (2013-07-01), pages 370 - 371
KIM, JUN HYEONG ET AL.: "Switching Noise Reduction in Radiated from Three-Phase Induction Motor by Chaotic Random PWM Technique", PROCEEDINGS OF IGEE SUMMER CONFERENCE, October 2004 (2004-10-01), pages 134 - 138
PARK, HYUN-SEOK ET AL.: "Conducted Noise & Acoustic Noise Reduction in Inverter fed Induction Motor System Using PWM Technique", PROCEEDINGS OF POWER ELECTRONICS AUTUMN CONFERENCE, 22 November 2003 (2003-11-22), pages 1 - 5
KIM, JUN HYEONG ET AL.: "Switching Noise Reduction in Radiated from Three-Phase Induction Motor by Chaotic Random PWM Technique", PROCEEDINGS OF IGEE SUMMER CONFERENCE, October 2004 (2004-10-01), pages 134 - 138
PARK, HYUN-SEOK ET AL.: "Conducted Noise & Acoustic Noise Reduction in Inverter fed Induction Motor System Using PWM Technique", PROCEEDINGS OF POWER ELECTRONICS AUTUMN CONFERENCE, 22 November 2003 (2003-11-22), pages 1 - 5
Attorney, Agent or Firm:
MOA INTELLECTUAL PROPERTY LAW FIRM (KR)
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