JP4372488B2 - 周波数変換装置 - Google Patents
周波数変換装置 Download PDFInfo
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- JP4372488B2 JP4372488B2 JP2003295002A JP2003295002A JP4372488B2 JP 4372488 B2 JP4372488 B2 JP 4372488B2 JP 2003295002 A JP2003295002 A JP 2003295002A JP 2003295002 A JP2003295002 A JP 2003295002A JP 4372488 B2 JP4372488 B2 JP 4372488B2
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- 238000006243 chemical reaction Methods 0.000 claims description 81
- 239000003990 capacitor Substances 0.000 claims description 19
- 239000007858 starting material Substances 0.000 claims description 2
- 230000004913 activation Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
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Description
2、2−1、2−2…直流リアクトル
3、3−1、3−2…逆変換部
3a〜3d…サイリスタ
4…負荷
4a…コイル
4b…コンデンサ
5…起動回路
5a…サイリスタ
5b…コンデンサ
5c…変圧器
5d…整流回路
5e…抵抗
5f…スイッチ
Claims (3)
- 交流電力を直流電力に変換する順変換部と、ブリッジ接続されたスイッチング素子からなり、直流リアクトルを介して供給される直流電力を高周波の交流電力に変換する逆変換部とを備えた変換装置を複数台並列接続し、共振回路を形成するとともに抵抗値が変化する負荷に出力電流を供給する周波数変換装置において、複数台の変換装置のうちの1台の変換装置を運転するために逆変換部をバイパスペア状態にしたとき、残りの待機中の変換装置の逆変換部も同時にバイパスペア状態にし、前記1台の変換装置の運転中に、出力電流が所定値を越える毎に前記変換装置の運転台数を増加させることを特徴とする周波数変換装置。
- 前記変換装置の逆変換部の並列接続点は、負荷のコンデンサの接続点近傍とすることを特徴とする請求項1に記載の周波数変換装置。
- コンデンサとスイッチとを備えた起動回路は1台とすることを特徴とする請求項1または請求項2に記載の周波数変換装置。
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JP2003295002A JP4372488B2 (ja) | 2003-08-19 | 2003-08-19 | 周波数変換装置 |
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JP2003295002A JP4372488B2 (ja) | 2003-08-19 | 2003-08-19 | 周波数変換装置 |
Publications (2)
Publication Number | Publication Date |
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JP2005065453A JP2005065453A (ja) | 2005-03-10 |
JP4372488B2 true JP4372488B2 (ja) | 2009-11-25 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003295002A Expired - Lifetime JP4372488B2 (ja) | 2003-08-19 | 2003-08-19 | 周波数変換装置 |
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JP (1) | JP4372488B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8618778B2 (en) * | 2008-10-01 | 2013-12-31 | Restech Limited | Circuit and method for coupling electrical energy to a resonated inductive load |
KR102572424B1 (ko) * | 2016-04-08 | 2023-08-29 | 엘에스일렉트릭(주) | 인버터 시스템의 제어 방법 |
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2003
- 2003-08-19 JP JP2003295002A patent/JP4372488B2/ja not_active Expired - Lifetime
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JP2005065453A (ja) | 2005-03-10 |
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