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특허 상세정보

High efficiency multistep sinewave synthesizer

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H02M-001/08    H02M-001/12   
미국특허분류(USC) 363/071 ; 363/041 ; 363/098
출원번호 US-0755847 (1996-11-26)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Fitch, Even, Tabin & Flannery
인용정보 피인용 횟수 : 30  인용 특허 : 0

A multistep inverter uses multiple inverter H-bridges connected in series to piecewise approximate a sine wave. The inverter H-bridges are bypassed or switched into service as required for sinewave synthesis. After a step is switched in, it creates its portion of the sine wave. Each step is further smoothed using pulse width modulation which leads to a smoother sine wave with the consequent advantages of lower distortion, smaller and lighter filtering circuits, and lower conversion losses during transistor switching.


[ What is claimed is:] [1.] A multistep inverter for converting dc power to ac power comprising:primary inverter means for converting a source of dc power to an intermediate ac power signal;a plurality of secondary inverter means, each having first and second output lines, for converting the intermediate ac power signal, in response to a control signal, to one of three output voltages appearing across the first and second output lines: a positive voltage +V, a zero voltage 0V, or a negative voltage -V;the plurality of secondary inverter means being stack...

이 특허를 인용한 특허 피인용횟수: 30

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  3. Mitev, Kantcho; Favaro, Primo. Approximated sinusoidal waveform inverter. USP2004116816394.
  4. Montminy, Jeffrey E.; Insixiengmay, Kyta; Mann, III, James W.; Newell, Benjamin E.; Newell, Ty A.. Compact, modularized air conditioning system that can be mounted upon an airplane ground support equipment cart. USP2012028117864.
  5. Cubaines, Fabrice. Current signal generator and method of implementing such a generator. USP2017029584037.
  6. Wernlund, James V.; Wernlund, Roger F.; Wernlund, Zachary J.; Wernlund, Christian J.. DC to AC converter that generates the sine wave from the pulse width modulated signal. USP2013018345451.
  7. Terörde, Gerd. Device for connection to an impedance having a mainly inductive character. USP2013058441150.
  8. York, Douglas S.. Direct conversion programmable power source controller: three-phase input with programmable single-phase output. USP2004026690588.
  9. York, Douglas S.. Direct conversion programmable power source controller: three-phase input with programmable single-phase output. USP2003096621721.
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  15. Mann, III, James W.; Montminy, Jeffrey E.; Bivens, Steven E.; Leadingham, David Wayne. Maintenance and control system for ground support equipment. USP2011118055388.
  16. Leuthen John Michael. Method and apparatus for pulse width modulation of a power supply for increased transient stability in subsurface wellbore pumps. USP2000036043995.
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