WO2012012456A1 - Ac/dc power conversion methods and apparatus - Google Patents

Ac/dc power conversion methods and apparatus Download PDF

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Publication number
WO2012012456A1
WO2012012456A1 PCT/US2011/044572 US2011044572W WO2012012456A1 WO 2012012456 A1 WO2012012456 A1 WO 2012012456A1 US 2011044572 W US2011044572 W US 2011044572W WO 2012012456 A1 WO2012012456 A1 WO 2012012456A1
Authority
WO
WIPO (PCT)
Prior art keywords
vout
converter
vin
switches
output voltage
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2011/044572
Other languages
English (en)
French (fr)
Inventor
Earl W. Mccune, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mobius Power LLC
Original Assignee
Mobius Power LLC
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 Mobius Power LLC filed Critical Mobius Power LLC
Priority to CN2011800459553A priority Critical patent/CN103229401A/zh
Priority to EP11810300.1A priority patent/EP2596574A1/en
Priority to JP2013520819A priority patent/JP2013538544A/ja
Publication of WO2012012456A1 publication Critical patent/WO2012012456A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/2176—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output

Definitions

  • the increasing current causes the magnetic field of the inductor 308 to build up and energy to be stored in the inductor's magnetic field.
  • the switch 304 When the switch 304 is turned off, the voltage drop across the inductor 308 quickly reverses polarity and the energy stored by the inductor 308 is used as a current source for the load 108.
  • the PWM control 312 is configured in a feed back path, allowing it to regulate the DC output voltage Vout by modulating the duty cycle D.
  • the AC/DC converter 300 in FIG. 3 addresses the inability of the AC/DC converter 100 in FIG. 1 to step down the DC voltage to a lower DC voltage, it does not address another well-known problem of conventional AC/DC converters - low power factor.
  • the power factor of an AC/DC converter is a dimensionless number between 0 and 1 indicating how effectively real power from an AC power source is transferred to a load.
  • An AC/DC converter with a low power factor draws more current from the mains than one having a high power factor for the same amount of useful power transferred.
  • a low power factor can result due to the input voltage Vin being out of phase with the input current Iin or by action of a nonlinear load distorting the shape of the input current Iin.
  • An exemplary AC/DC converter that converts an AC input voltage Vin, such as may be provided by the AC mains, to a DC output voltage comprises an inductor, a capacitor, a plurality of switches, and a controller.
  • the controller configures the plurality of switches, inductor, and capacitor to operate as a buck converter during times when Vin > Vout and to operate as an inverting buck converter during times when Vin ⁇ -Vout.
  • the controller modulates the duty cycles of the plurality of switches to regulate the DC output voltage Vout to the desired, constant output level.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)
PCT/US2011/044572 2010-07-22 2011-07-19 Ac/dc power conversion methods and apparatus Ceased WO2012012456A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2011800459553A CN103229401A (zh) 2010-07-22 2011-07-19 Ac/dc电力转换方法和设备
EP11810300.1A EP2596574A1 (en) 2010-07-22 2011-07-19 Ac/dc power conversion methods and apparatus
JP2013520819A JP2013538544A (ja) 2010-07-22 2011-07-19 Ａｃ／ｄｃ電力変換方法および装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/841,608 US9263967B2 (en) 2010-07-22 2010-07-22 AC/DC power conversion methods and apparatus
US12/841,608 2010-07-22

Publications (1)

Publication Number Publication Date
WO2012012456A1 true WO2012012456A1 (en) 2012-01-26

Family

ID=45493499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/044572 Ceased WO2012012456A1 (en) 2010-07-22 2011-07-19 Ac/dc power conversion methods and apparatus

Country Status (6)

Country Link
US (1) US9263967B2 (enExample)
EP (1) EP2596574A1 (enExample)
JP (1) JP2013538544A (enExample)
CN (1) CN103229401A (enExample)
TW (1) TW201223107A (enExample)
WO (1) WO2012012456A1 (enExample)

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Also Published As

Publication number Publication date
US9263967B2 (en) 2016-02-16
EP2596574A1 (en) 2013-05-29
JP2013538544A (ja) 2013-10-10
US20120020135A1 (en) 2012-01-26
TW201223107A (en) 2012-06-01
CN103229401A (zh) 2013-07-31

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