BRPI0702291A2 - Electromagnetic Interference Reduction Method and System in a Cooling System - Google Patents

Electromagnetic Interference Reduction Method and System in a Cooling System

Info

Publication number
BRPI0702291A2
BRPI0702291A2 BRPI0702291-3A BRPI0702291A BRPI0702291A2 BR PI0702291 A2 BRPI0702291 A2 BR PI0702291A2 BR PI0702291 A BRPI0702291 A BR PI0702291A BR PI0702291 A2 BRPI0702291 A2 BR PI0702291A2
Authority
BR
Brazil
Prior art keywords
pwm
modulation period
electromagnetic interference
maximum
minimum
Prior art date
Application number
BRPI0702291-3A
Other languages
Portuguese (pt)
Inventor
Guenter Johann Maass
Roberto Andrich
Original Assignee
Whirlpool Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whirlpool Sa filed Critical Whirlpool Sa
Priority to BRPI0702291-3A priority Critical patent/BRPI0702291A2/en
Priority to PCT/BR2008/000139 priority patent/WO2008141407A1/en
Priority to ARP080102100A priority patent/AR066618A1/en
Publication of BRPI0702291A2 publication Critical patent/BRPI0702291A2/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/26—Power factor control [PFC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from AC input or output
    • H02M1/123—Suppression of common mode voltage or current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

MÉTODO E SISTEMA DE REDUÇçO DE INTERFERÊNCIA ELETROMAGNÉTICA EM UM SISTEMA DE REFRIGERAÇçO. A presente invenção refere-se a uma técnica para reduzir os níveis de interferência eletromagnética em sistemas de refrigeração equipados com inversor de freqúência. A técnica, conhecida por Jitteríng, realizando a variação cíclica da freqúência de comutação da ponte inversora. Uma das formas de realizar a invenção é através de um método de redução de interferência eletromagnética em um sistema de refrigeração, o sistema compreendendo um motor elétrico de velocidade variável (10) controlado por uma ponte inversora (15) acionada por um sinal em modulação PWM, a modulação PWM tendo um período de modulação (T~ TPWM) que varia entre um período máximo de modulação (T~ PWM-MAX~) e um período mínimo de modulação (T~ PWM-MIN~), o método compreendendo uma etapa de continuamente variar a o período de modulação (T~ PWM~) entre o período máximo de modulação (T~ PWM-MAX~) e o período mínimo de modulação (T~ PWM-MIN~), de modo a gradualmente incrementar e decrementar o período (T~ PWM~) entre os valores máximo e mínimo a cada novo período de modulação PWM para gerar uma atenuação na amplitude do sinal PWM na sua freqúência fundamental e nas frequências harmônicas.METHOD AND ELECTROMAGNETIC INTERFERENCE REDUCTION SYSTEM IN A REFRIGERATION SYSTEM. The present invention relates to a technique for reducing electromagnetic interference levels in frequency inverter equipped refrigeration systems. The technique, known as Jittering, performs the cyclic variation of the inverter bridge switching frequency. One embodiment of the invention is by a method of reducing electromagnetic interference in a refrigeration system, the system comprising a variable speed electric motor (10) controlled by an inverter bridge (15) driven by a PWM modulated signal. , PWM modulation having a modulation period (T ~ TPWM) ranging from a maximum modulation period (T ~ PWM-MAX ~) to a minimum modulation period (T ~ PWM-MIN ~), the method comprising one step continuously vary the modulation period (T ~ PWM ~) between the maximum modulation period (T ~ PWM-MAX ~) and the minimum modulation period (T ~ PWM-MIN ~) so as to gradually increase and decrease the (T ~ PWM ~) between the maximum and minimum values at each new PWM modulation period to attenuate the amplitude of the PWM signal at its fundamental frequency and harmonic frequencies.

BRPI0702291-3A 2007-05-17 2007-05-17 Electromagnetic Interference Reduction Method and System in a Cooling System BRPI0702291A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BRPI0702291-3A BRPI0702291A2 (en) 2007-05-17 2007-05-17 Electromagnetic Interference Reduction Method and System in a Cooling System
PCT/BR2008/000139 WO2008141407A1 (en) 2007-05-17 2008-05-14 Method and system for reducing electromagnetic interference in a refrigeration system
ARP080102100A AR066618A1 (en) 2007-05-17 2008-05-16 METHOD AND SYSTEM OF REDUCTION OF ELECTROMAGNETIC INTERFERENCE IN A REFRIGERATION SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BRPI0702291-3A BRPI0702291A2 (en) 2007-05-17 2007-05-17 Electromagnetic Interference Reduction Method and System in a Cooling System

Publications (1)

Publication Number Publication Date
BRPI0702291A2 true BRPI0702291A2 (en) 2008-12-30

Family

ID=39639296

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0702291-3A BRPI0702291A2 (en) 2007-05-17 2007-05-17 Electromagnetic Interference Reduction Method and System in a Cooling System

Country Status (3)

Country Link
AR (1) AR066618A1 (en)
BR (1) BRPI0702291A2 (en)
WO (1) WO2008141407A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010083877A1 (en) * 2009-01-24 2010-07-29 Ebm-Papst St. Georgen Gmbh & Co. Kg Electric motor and device for generating a signal for controlling the same
DE102009027239B4 (en) * 2009-06-26 2013-08-08 Geze Gmbh door system
CN102287891B (en) * 2011-06-16 2013-10-09 广东美的电器股份有限公司 Direct current convertible frequency air conditioner and control method thereof
DE102012214977A1 (en) * 2012-08-23 2014-02-27 Hilti Aktiengesellschaft Method and device for driving an electric motor of a hand tool machine
DE102022203427A1 (en) 2022-04-06 2023-10-12 BSH Hausgeräte GmbH Method for operating an inverter, inverter and household appliance
CN116066390A (en) * 2022-12-12 2023-05-05 深圳市当智科技有限公司 Cooling fan control method, projector and storage medium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685923B1 (en) * 1994-06-03 1999-08-25 Inventio Ag Low noise operation of a pulsed inverter fed motor
US7170405B2 (en) * 2000-12-26 2007-01-30 General Electric Company Method and apparatus for interfacing a power line carrier and an appliance
EP1501186B1 (en) * 2003-07-18 2018-08-22 III Holdings 10, LLC Motor driving apparatus
JP4085976B2 (en) * 2003-12-25 2008-05-14 日産自動車株式会社 Inverter control device and control method
JP4677764B2 (en) * 2004-11-08 2011-04-27 日産自動車株式会社 Control device for pulse width modulation signal driving device

Also Published As

Publication number Publication date
WO2008141407A1 (en) 2008-11-27
AR066618A1 (en) 2009-09-02

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired