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1. WO2022208616 - COMMON MODE FILTER CIRCUIT

Publication Number WO/2022/208616
Publication Date 06.10.2022
International Application No. PCT/JP2021/013316
International Filing Date 29.03.2021
IPC
H02M 1/12 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
1Details of apparatus for conversion
12Arrangements for reducing harmonics from ac input or output
H02M 7/48 2007.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
CPC
H02M 1/12
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
1Details of apparatus for conversion
12Arrangements for reducing harmonics from ac input or output
H02M 7/48
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
Applicants
  • 三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP]/[JP]
Inventors
  • 大石 将幸 OISHI Masayuki
  • 坂下 友一 SAKASHITA Tomokazu
Agents
  • 弁理士法人ぱるも特許事務所 PALMO PATENT FIRM, P.C.
Priority Data
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) COMMON MODE FILTER CIRCUIT
(FR) CIRCUIT DE FILTRE DE MODE COMMUN
(JA) コモンモードフィルタ回路
Abstract
(EN) This common mode filter circuit (1) comprises: a voltage detection circuit (11) for outputting a signal (sig1) including information of the common mode voltage (Vcm) generated on power lines (4, 5); a band limiting circuit (12) for allowing a specific frequency component to pass; a common mode transformer (16) for superimposing an injection voltage (Vap) onto the power lines (4, 5); an output voltage generation circuit (66) for outputting an output voltage (Vs) to the primary winding (8) of the transformer (16); and an impedance adjuster (18) for adjusting the load impedance (Zt) of a load circuit (60) including the transformer (16) connected between the output terminals of the output voltage generation circuit (66). The impedance (Zst) of the adjuster (18) is set such that a frequency (fr4) at which the load impedance (Zt) including the impedance (Zst) is maximized is within a range of two cut-off frequencies (fl, fh) of the band limiting circuit (12).
(FR) Ce circuit de filtre de mode commun (1) comprend : un circuit de détection de tension (11) pour émettre un signal (sig1) comprenant des informations de la tension de mode commun (Vcm) générée sur des lignes électriques (4, 5) ; un circuit de limitation de bande (12) pour permettre à un composant de fréquence spécifique de passer ; un transformateur de mode commun (16) pour superposer une tension d'injection (Vap) sur les lignes électriques (4, 5) ; un circuit de génération de tension de sortie (66) pour émettre une tension de sortie (Vs) à l'enroulement primaire (8) du transformateur (16) ; et un dispositif de réglage d'impédance (18) permettant de régler l'impédance de charge (Zt) d'un circuit de charge (60) comprenant le transformateur (16) connecté entre les bornes de sortie du circuit de génération de tension de sortie (66). L'impédance (Zst) du dispositif de réglage (18) est réglée de telle sorte qu'une fréquence (fr4) à laquelle l'impédance de charge (Zt) comprenant l'impédance (Zst) est maximisée se situe dans une plage de deux fréquences de coupure (fl, fh) du circuit de limitation de bande (12).
(JA) コモンモードフィルタ回路(1)は、電力線(4、5)に生じたコモンモード電圧(Vcm)の情報を含む信号(sig1)を出力する電圧検出回路(11)と、特定の周波数成分を通過させる帯域制限回路(12)と、電力線(4、5)に注入電圧(Vap)を重畳するコモンモードトランス(16)と、出力電圧(Vs)をトランス(16)の一次巻線(8)に出力する出力電圧生成回路(66)と、出力電圧生成回路(66)の出力端子間に接続されているトランス(16)を含む負荷回路(60)の負荷インピーダンス(Zt)を調整するインピーダンス調整器(18)と、を備えている。調整器(18)のインピーダンス(Zst)は、当該インピーダンス(Zst)を含む負荷インピーダンス(Zt)が最大となる周波数(fr4)が、帯域制限回路(12)の二つのカットオフ周波数(fl、fh)の範囲内に設定されている。
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