JP5420910B2 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
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- JP5420910B2 JP5420910B2 JP2008555377A JP2008555377A JP5420910B2 JP 5420910 B2 JP5420910 B2 JP 5420910B2 JP 2008555377 A JP2008555377 A JP 2008555377A JP 2008555377 A JP2008555377 A JP 2008555377A JP 5420910 B2 JP5420910 B2 JP 5420910B2
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- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
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- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/01—Resonant DC/DC converters
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33571—Half-bridge at primary side of an isolation transformer
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Description
図1は、フライバック電圧コンバータ(以下、単にコンバータともいう。)100を示している。コンバータ100は、トランス102と、抵抗104と、2つのコンデンサ106、112と、2つのダイオード108、110とを含む。抵抗104とコンデンサ106は、並列に接続されている。並列の抵抗104及びコンデンサ106の1つの端子は、トランス102の一次巻線の第1の端子に接続されている。ダイオード108のアノードは、トランス102の一次巻線に接続されており、ダイオード108のカソードは、並列の抵抗104及びコンデンサ106の他方の端子に接続されている。入力電圧VINは、抵抗104の第1の端子に接続されており、及び接地されている。ダイオード110のアノードは、トランス102の二次巻線の第1の端子に接続されている。ダイオード110のカソードは、コンデンサ112の第1の端子に接続されている。コンデンサ112の第2の端子は、トランス102の二次巻線の第2の端子に接続されている。スイッチング素子115の第1の端子は、トランス102の一次巻線の第2の端子に接続されており、トランス102にオン/オフ入力電力サイクルを提供する。スイッチング素子115の第2の端子は、検出抵抗117に接続されており、検出抵抗117は、接地されている。負荷114は、通常、トランス102の二次巻線側において、コンバータ100の出力に接続される。
コンバータ100は、トランス102の一次巻線に亘って入力電圧VINが供給され、トランス102の二次巻線を介して、抵抗114として表された負荷に電力を供給するように構成されている。更に図1に示すように、トランス102の一次側の電流は、検出抵抗117を介して流れる電流に比例しており、IPRIとして表され、二次側の電流は、ISECとして表されている。
従来のフライバック電圧コンバータのタイミングチャート
フライバック電圧コンバータ100は、動作中に、損失、雑音及び他の非効率な及び/又は望ましくない作用の影響を受ける。例えば、図2は、図1のフライバック電圧コンバータ100の動作時に記録された電圧及び電流の信号曲線を示すグラフ200を示している。図2に示すように、グラフ200は、時刻t1〜t5の入力電圧VIN、スイッチング素子115に亘るドレイン−ソース電圧VDS及びスイッチング素子115を介する電流IPRSを表す信号を示している。更に、図2に示すように、信号曲線は、フライバック電圧コンバータ100のハードスイッチングによって生じる雑音効果及び鋸歯波を含んでいる。スイッチングサイクルにおけるハードスイッチングを行った時点の付近で、リンギングによる粗い電子雑音は、特に顕著になっている。更に、上述したように、これらの望ましくない効果は、現代の電圧コンバータ用途において要求されるよりも高いスイッチング周波数によって、更に顕著になる。
ゼロ電圧スイッチング
図3の回路300、図4の回路400、及び図5の回路500は、2つの異なる周波数及びゼロ電圧スイッチングを用いて有効に動作させることができる。これらの2つの周波数について、図3を参照して説明する。第1の周波数f1は、補助スイッチ(304)がオンになると生成される。補助スイッチ(304)がアクティブ、すなわちオンになると、第2の共振コンデンサ(302)は、第1の共振コンデンサ(306)及びトランス(303)の一次巻線を含むコイル−コンデンサ回路に並列に接続される。したがって、第1の周波数f1は、以下のように表される。
効果
電力変換の分野では、従来より最も伝統的な電源技術の1つは、フライバック電圧コンバータである。フライバック技術は、エネルギを蓄積及び放出することによって、DC高電圧又はDC低電圧を変換する。フライバック型変換は、通常、高電力アプリケーションには向いていないが、例えば、約100ワットまでの小電力及び中電力の電力変換に向いていると考えられている。したがって、フライバック技術は、実装寸法が小さく、電気エネルギ効率が高く、(雑音及び/又はEMI効果に関して)電気環境への影響が小さいことから、電力変換の分野における特定のアプリケーションでは、今でも有益なトポロジであると考えられている。しかしながら、現代の高周波及び/又は高電力アプリケーションでは、従来の技術、例えば、フライバック変換は、自然法則に基づく幾つかの好ましくない作用を生じる。例えば、ランドの法則及びマクスウェルの法則によれば、周波数によって生成される磁界は、例えば、電圧コンバータアプリケーションのスイッチング周波数等の動作周波数に依存する。したがって、周波数が高くなるに従って、磁界によって導入される成分は、より小さくなる。様々な研究者が、電圧変換における磁気効果の問題の解決策として、この特性を利用してきた。具体的には、スイッチング周波数を高めることによって、高速スイッチング電気部品によって当然発生する磁界及び特性は、より小さくなる。なお、高周波動作は、トレードオフを有する。例えば、多くのハードスイッチングを用いることによる高周波動作によって、スイッチング損失及び雑音レベルの増加に加えて、高調波が増加した望ましくない波形が生成される。したがって、当該分野における高周波による解決法は、1つの望ましくない要素を低減させるのみである。すなわち、通常は、望ましくない磁気効果だけが低減される代わりに、他の多くの望ましくない作用が生じる。
Claims (8)
- フライバックコンバータからなる電力変換装置であって、
一次側を有するトランスと、
上記トランスに接続され、第1及び第2の共振コンデンサを有する共振回路と、
上記トランスの二次側の近傍に配設された整流器とを備え、
上記共振回路は、主スイッチと、補助スイッチを有し、
上記補助スイッチは、上記一次側に接続され、
上記第2の共振コンデンサの電圧を検出する比較器と、
上記比較器の出力状態に基づいて、上記補助スイッチを駆動する補助ドライバとを更に備えることを特徴とする電力変換装置。 - 上記共振回路は、上記補助スイッチを転流させることによって、上記トランスの一次側インダクタンスと、上記第1及び第2の共振コンデンサとの間でエネルギの交換を行い、
上記転流は、上記補助スイッチのオン/オフサイクルからなることを特徴とする請求項1記載の電力変換装置。 - 上記共振回路は、上記補助スイッチによって、上記第1及び第2の共振コンデンサの値に基づく2つの共振周波数を切り換えることを特徴とする請求項1記載の電力変換装置。
- 当該電力変換装置は、上記主スイッチ及び補助スイッチの少なくとも1つのゼロ電圧スイッチング(ZVS)を行うことを特徴とする請求項1記載の電力変換装置。
- 当該電力変換装置は、上記主スイッチ、補助スイッチ及びトランスのうちの少なくとも1つに関連する寄生容量に蓄積されたエネルギを、共振サイクルにおいて循環させることを特徴とする請求項1記載の電力変換装置。
- 上記主スイッチ用の主ドライバを更に備え、
上記補助ドライバは、上記主ドライバから独立している請求項1記載の電力変換装置。 - 上記補助スイッチは、主共振サイクルにおいて、上記補助ドライバによってエネルギを取り出して、自励駆動されることを特徴とする請求項1記載の電力変換装置。
- フライバックコンバータからなる電力変換装置であって、
トランスと、
上記トランスに接続された共振回路とを備え、
上記共振回路は、上記トランスに接続され、第1の共振周波数で動作する第1のコンデンサと、スイッチによって上記第1のコンデンサに並列に選択的に接続され、第2の共振周波数で動作する第2のコンデンサとを有し、
上記第2の共振コンデンサの電圧を検出する比較器と、
上記比較器の出力状態に基づいて、上記スイッチを駆動するドライバとを更に備えることを特徴とする電力変換装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77376506P | 2006-02-14 | 2006-02-14 | |
US60/773,765 | 2006-02-14 | ||
PCT/US2007/004099 WO2007095346A2 (en) | 2006-02-14 | 2007-02-14 | Two terminals quasi resonant tank circuit |
Publications (2)
Publication Number | Publication Date |
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JP2009527215A JP2009527215A (ja) | 2009-07-23 |
JP5420910B2 true JP5420910B2 (ja) | 2014-02-19 |
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JP2008555377A Expired - Fee Related JP5420910B2 (ja) | 2006-02-14 | 2007-02-14 | 電力変換装置 |
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US (3) | US7764515B2 (ja) |
EP (1) | EP1987582A4 (ja) |
JP (1) | JP5420910B2 (ja) |
WO (1) | WO2007095346A2 (ja) |
Cited By (1)
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US7924577B2 (en) | 2011-04-12 |
US20100067276A1 (en) | 2010-03-18 |
JP2009527215A (ja) | 2009-07-23 |
EP1987582A2 (en) | 2008-11-05 |
WO2007095346A3 (en) | 2008-08-07 |
US7764515B2 (en) | 2010-07-27 |
EP1987582A4 (en) | 2018-01-24 |
WO2007095346A2 (en) | 2007-08-23 |
US20070263415A1 (en) | 2007-11-15 |
US7924578B2 (en) | 2011-04-12 |
US20100061123A1 (en) | 2010-03-11 |
WO2007095346B1 (en) | 2008-09-18 |
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