JP2004312971A - Inverter device - Google Patents

Inverter device Download PDF

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Publication number
JP2004312971A
JP2004312971A JP2003130869A JP2003130869A JP2004312971A JP 2004312971 A JP2004312971 A JP 2004312971A JP 2003130869 A JP2003130869 A JP 2003130869A JP 2003130869 A JP2003130869 A JP 2003130869A JP 2004312971 A JP2004312971 A JP 2004312971A
Authority
JP
Japan
Prior art keywords
chopper
voltage
power supply
reverse blocking
switching element
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.)
Pending
Application number
JP2003130869A
Other languages
Japanese (ja)
Inventor
Yoshihiro Ishii
由弘 石井
Seiji Sakuma
清二 佐久間
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.)
Hitachi Lighting Ltd
Original Assignee
Hitachi Lighting Ltd
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 Hitachi Lighting Ltd filed Critical Hitachi Lighting Ltd
Priority to JP2003130869A priority Critical patent/JP2004312971A/en
Publication of JP2004312971A publication Critical patent/JP2004312971A/en
Pending legal-status Critical Current

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  • Inverter Devices (AREA)
  • Rectifiers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the withstand voltage load of reverse blocking diodes 51, 52 in a chopper-operating DC power supply incorporating a chopper inductor/ a chopper switching element. <P>SOLUTION: This DC power supply is provided with an AC power source (10) and the chopper inductor (20) connected in series to the power source. A chopper switch is provided that impresses the voltage of the power source (10) intermittently to the chopper inductor (20). The copper switch includes four pieces of full-wave rectifying diodes (32, 33, 34, 35) and a semiconductor switching element (31) that is connected between DC terminals of those diodes. A pair of voltage doubler capacitors (41, 42) connected in series are provided. One end of the series circuit that includes the AC power source (10) and the chopper inductor (20) is connected to the point of intersection with both voltage doubler capacitors (41, 42). Both ends of the series circuit that includes both voltage doubler capacitors (41, 42) are connected between the DC terminals each via the reverse blocking diodes (51, 52). The withstand voltage burden of the reverse blocking diodes is reduced by changing the connection of the lower end of the reverse blocking diode 51 from Point A to Point B, and the upper end of the reverse blocking diode 52 from the Point A to Point C. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明はチョッパ用インダクタ・チョッパ用スイッチング素子を組み込んだチョッパ動作形の直流電源装置に関するものである。
【0002】
【従来の技術】
図2について説明する。直流電源装置100は交流電源10を備える。チヨツパ用インダクタ20を備える。交流電源10電圧をチョッパ用インダクタ20に断続的に印加する交流動作形チョッパ用スイッチング素子30を備える。直列接続された第一平滑用コンデンサ41および第二平滑用コンデンサ42を備える。交流動作形チョッパ用スイッチング素子30の正極性電圧を第一平滑用コンデンサ41に印加する第…補助ダイオード51を備える。交流動作形チョッパ用スイッチング素子30の負極性電圧を第一も平滑用コンデンサ42に印加する第ち補助ダイオード52を備える。
交流動作形チョッパ用スイッチング素子30は片方向性スイッチング素子31の特性をダイオード32〜35による整流回路を使って双方向特性に転換したものである。片方向性スイッチング素子31はトランジスタである。第一平滑用コンデンサ41・第二平滑用コンデンサ42はハーフブリッジ形インバータ装置200のコンデンサアーム(ブリッジ回路の2辺)を兼ねる。
【0003】
【発明が解決しようとする課題】
図2はいわば交流チョッパである。交流チョッパの利点は事後に倍電圧整流が効くことである。それによりチョッパ出力電圧を半減させ、低耐圧のスイッチング素子30ないしはチョッパ用インダクタ20の使用が可能となる。しかし、逆阻止用ダイオ−ド51(52)に倍電圧用コンデンサ41(42)の2倍の最大電圧がかかるので、その点の耐圧負担が重い。
本発明の目的は、逆阻止ダイオードの耐圧負荷を軽減することにある。
【0004】
【課題を解決するための手段】
本発明装置は交流電源を備える。チョッパ用インダクタを備える。前記交流電源電圧を断続的に前記チョッパ用インダクタへ印加するチョッパ用スイッチを備える。前記チョッパ用スイッチは4個の全波整流用ダイオードを備える。前記ダイオード直流端子間に接続する半導体スイッチング素子備える。直列一対の倍電圧用コンデンサを備える。
前記交流電源・チョッパ用インダクタを含む直列回路の−端を前記両倍電圧用コンデンサの交点に接続し、前記両倍電圧用コンデンサを含む直列回路の両端をそれぞれ逆阻止用ダイオ−ドを介して前記直流端子間に接続した倍電圧整流回路を構成する。
2つの逆阻止ダイオードの間に全波整流ダイオード、チョッパ用スイッチング素子を入れることにより、倍電圧コンデンサの電圧を全波整流ダイオードと逆阻止ダイオードで分担して受けるので負荷が軽減される。
【0005】
【発明の実施の形態】
図1を利用して本発明の実施形態について説明する。この説明に前記図2の部品符号をなるべくそのまま転用し、重複する説明の一部を適宜に割愛する。図1の本発明に係る直流電源装置100は交流電源10を備える。チョッパ用インダクタ20を備える。交流電源10電圧をチョッパ用インダクタ20に断続的に印加する交流動作形チョッパ用スイッチング素子30を備える。直列接続された第一平滑用コンデンサ41および第二平滑用コンデンサ42を備える。交流動作形チョッパ用スイッチング素子30の正極性電圧を第一平滑用コンデンサ41に印加する第一補助ダイオード51を備える。交流動作形チョッパ用スイッチング素子30の負極性電圧を第二平滑用コンデンサ42に印加する第二補助ダイオード52を備える。
交流動作形チョッパ用スイッチング素子30は片方向性スイッチング素子31の特性をダイオード32〜35による整流回路を使って双方向特性に転換したものである。片方向性スイッチング素子31はトランジスタである。第一平滑用コンデンサ41・第二平滑用コンデンサ42はハーフブリッジ形インバータ装置200のコンデンサアーム(ブリッジ回路の2辺)を兼ねる。
交流電源10電圧が正極性となる期間の動作は次の通りである。交流動作形チョッパ用スイッチング素子30がオンすると、20−10−30−20の閉回路に通電し、チョッパ用インダクタ20に電磁エネルギが蓄積する。交流動作形チョッパ用スイッチング素子30がオフすると、20−10−30−51−41−20の開回路に通電し、チョッパ用インダクタ20の電磁エネルギが放出し、第−平滑用コンデンサ41が充電する。交流電源10電圧が負極性となる期間の動作は次の通りである。交流動作形チョッパ用スイッチング素子30がオンすると、20−30−10−20の閉回路に通電し、チョッパ用インダクタ20に電磁エネルギが蓄積する。交流動作形チョッパ用スイッチング素子30がオフすると、20−42−52−30−10−20の閉回路に通電し、チョソパ用インダクタ20の電磁エネルギが放出し、第二平滑用コンデンサ42が充電する。
交流チョッパの利点は事後に倍電圧整流が効くことである。それによりチヨソバ出力電圧を半減させ、低耐圧のスイッチング素子30ないしはチョッバ用インダクタ20の使用が可能となる。しかし、逆阻止用ダイオ−ド51(52)に倍電圧用コンデンサ41(42)の2倍の最大電圧がかかるので、その点の耐圧負担が重い。
本発明は図2の逆阻止用ダイオ〜ド51の下端を点Aから点Bへ繋ぎ替え,逆阻止用ダイオ−ド52の上端を点Aから点Cへ繋ぎ替える。本発明は、この交流動作形チョッパ用スイッチング素子30のどの位置に逆阻止ダイオードを接続するかにこだわる。
本発明は前記最大電圧を逆阻止用ダイオ−ド51(52)・全波整流用ダイオード32(33)で分担して受けるので、逆阻止用ダイオ−ド51(52)の耐圧負担が軽くなる。総じて安価な装置が得られる。
【0006】
【発明の効果】
本発明は図2の逆阻止用ダイオ−ド51の下端を点Aから点Bへ繋ぎ替え、逆阻止用ダイオ−ド52の上端を点Aから点Cへ繋ぎ替える事により、逆阻止ダイオードの耐圧負担を軽減する。
【図面の簡単な説明】
【図1】本発明装置の回路図である。
【図2】従来装置の回路図である。
【符号の説明】
10:交流電源
20:チョッパ用インダクタ
30:交流動作形チョッパ用スイッチング素子
41:第一平滑用コンデンサ
42:第二平滑用コンデンサ
51:第一補助ダイオード
52:第二補助ダイオード
100:直流電源装置
200:インバータ装置
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chopper operation type DC power supply device incorporating a chopper inductor and a chopper switching element.
[0002]
[Prior art]
FIG. 2 will be described. The DC power supply device 100 includes an AC power supply 10. A chopper inductor 20 is provided. An AC-operated chopper switching element 30 for intermittently applying a voltage of the AC power supply 10 to the chopper inductor 20 is provided. A first smoothing capacitor 41 and a second smoothing capacitor 42 are connected in series. A first auxiliary diode 51 for applying a positive voltage of the AC operation type chopper switching element 30 to the first smoothing capacitor 41 is provided. A first auxiliary diode 52 is provided for applying the negative voltage of the AC operation type chopper switching element 30 to the first and second smoothing capacitors 42.
The AC-operated chopper switching element 30 is obtained by converting the characteristics of the unidirectional switching element 31 to bidirectional characteristics using a rectifier circuit including diodes 32 to 35. The unidirectional switching element 31 is a transistor. The first smoothing capacitor 41 and the second smoothing capacitor 42 also serve as capacitor arms (two sides of a bridge circuit) of the half-bridge inverter device 200.
[0003]
[Problems to be solved by the invention]
FIG. 2 is an AC chopper. The advantage of the AC chopper is that double voltage rectification works afterwards. As a result, the output voltage of the chopper is halved, and the switching element 30 or the chopper inductor 20 having a low withstand voltage can be used. However, since the maximum voltage that is twice the voltage of the voltage doubler capacitor 41 (42) is applied to the reverse blocking diode 51 (52), the withstand voltage load at that point is heavy.
An object of the present invention is to reduce the withstand voltage load of a reverse blocking diode.
[0004]
[Means for Solving the Problems]
The device of the present invention includes an AC power supply. It has a chopper inductor. A chopper switch for intermittently applying the AC power supply voltage to the chopper inductor. The chopper switch has four full-wave rectifier diodes. A semiconductor switching element connected between the diode DC terminals. A pair of capacitors for voltage doubler are provided in series.
The negative terminal of the series circuit including the AC power supply / chopper inductor is connected to the intersection of the double voltage capacitor, and both ends of the series circuit including the double voltage capacitor are respectively connected via reverse blocking diodes. A voltage doubler rectifier circuit is connected between the DC terminals.
By inserting a full-wave rectifier diode and a chopper switching element between the two reverse blocking diodes, the voltage of the voltage doubler capacitor is shared and received by the full-wave rectifying diode and the reverse blocking diode, so that the load is reduced.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to FIG. In this description, the part numbers in FIG. 2 are used as much as possible, and a part of the overlapping description is omitted as appropriate. The DC power supply device 100 according to the present invention shown in FIG. A chopper inductor 20 is provided. An AC-operated chopper switching element 30 for intermittently applying a voltage of the AC power supply 10 to the chopper inductor 20 is provided. A first smoothing capacitor 41 and a second smoothing capacitor 42 are connected in series. A first auxiliary diode 51 is provided for applying a positive voltage of the AC operation type chopper switching element 30 to the first smoothing capacitor 41. A second auxiliary diode 52 is provided for applying a negative voltage of the AC operation type chopper switching element 30 to the second smoothing capacitor 42.
The AC-operated chopper switching element 30 is obtained by converting the characteristics of the unidirectional switching element 31 to bidirectional characteristics using a rectifier circuit including diodes 32 to 35. The unidirectional switching element 31 is a transistor. The first smoothing capacitor 41 and the second smoothing capacitor 42 also serve as capacitor arms (two sides of a bridge circuit) of the half-bridge inverter device 200.
The operation during the period when the AC power supply 10 voltage is positive is as follows. When the AC operation type chopper switching element 30 is turned on, the closed circuit of 20-10-30-20 is energized, and electromagnetic energy is accumulated in the chopper inductor 20. When the AC-operated chopper switching element 30 is turned off, the open circuit of 20-10-30-51-41-20 is energized, the electromagnetic energy of the chopper inductor 20 is released, and the -smoothing capacitor 41 is charged. . The operation during the period when the voltage of the AC power supply 10 is negative is as follows. When the AC operation type chopper switching element 30 is turned on, a current flows through a closed circuit of 20-30-10-20, and electromagnetic energy is accumulated in the chopper inductor 20. When the AC-operated chopper switching element 30 is turned off, a current flows through a closed circuit of 20-42-52-30-10-20, the electromagnetic energy of the choosper inductor 20 is released, and the second smoothing capacitor 42 is charged. .
The advantage of the AC chopper is that double voltage rectification works afterwards. As a result, the output voltage of the chisoba is reduced by half, and the switching element 30 or the chopping inductor 20 having a low breakdown voltage can be used. However, since the maximum voltage that is twice the voltage of the voltage doubler capacitor 41 (42) is applied to the reverse blocking diode 51 (52), the withstand voltage load at that point is heavy.
In the present invention, the lower end of the reverse blocking diode 51 in FIG. 2 is connected from point A to point B, and the upper end of the reverse blocking diode 52 is connected from point A to point C. The present invention is particular about where the reverse blocking diode is connected to the switching element 30 for the AC operation type chopper.
In the present invention, since the maximum voltage is shared and received by the reverse blocking diode 51 (52) and the full-wave rectifying diode 32 (33), the withstand voltage load of the reverse blocking diode 51 (52) is reduced. . In general, an inexpensive device is obtained.
[0006]
【The invention's effect】
In the present invention, the lower end of the reverse blocking diode 51 of FIG. 2 is connected from the point A to the point B, and the upper end of the reverse blocking diode 52 is connected from the point A to the point C. Reduce the pressure resistance load.
[Brief description of the drawings]
FIG. 1 is a circuit diagram of the device of the present invention.
FIG. 2 is a circuit diagram of a conventional device.
[Explanation of symbols]
10: AC power supply 20: Chopper inductor 30: AC operation type chopper switching element 41: First smoothing capacitor 42: Second smoothing capacitor 51: First auxiliary diode 52: Second auxiliary diode 100: DC power supply device 200 : Inverter device

Claims (1)

交流電源(10)とそれに直列のチョッパ用インダクタ(20)を備え、前記交流電源(10)電圧を断続的に前記チョッパ用インダクタ(20)へ印加するチョッパ用スイッチを備え、前記チョッパ用スイッチは4個の全波整流用ダイオード(32・33・34・35)とそれらの直流端子間に接続する半導体スイッチング素子(31)を含み、直列一対の倍電圧用コンデンサ(41・42)を備え、前記交流電源(10)・チョッパ用インダクタ(20)を含む直列回路の一端を前記両倍電圧用コンデンサ(41・42)の交点に接続し、前記両倍電圧用コンデンサ(41・42)を含む直列回路の両端をそれぞれ逆阻止用ダイオ−ド(51・52)を介して前記直流端子間に接続したことを特徴とする直流電源装置。An AC power supply (10) and a chopper inductor (20) in series with the AC power supply (10), a chopper switch for intermittently applying the AC power supply (10) voltage to the chopper inductor (20) are provided, and the chopper switch is Including four full-wave rectifier diodes (32, 33, 34, 35) and a semiconductor switching element (31) connected between their DC terminals, a pair of series voltage doubler capacitors (41, 42) is provided. One end of a series circuit including the AC power supply (10) and the chopper inductor (20) is connected to an intersection of the double voltage capacitors (41, 42), and includes the double voltage capacitors (41, 42). A DC power supply device wherein both ends of a series circuit are connected between the DC terminals via respective reverse blocking diodes (51, 52).
JP2003130869A 2003-04-02 2003-04-02 Inverter device Pending JP2004312971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003130869A JP2004312971A (en) 2003-04-02 2003-04-02 Inverter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003130869A JP2004312971A (en) 2003-04-02 2003-04-02 Inverter device

Publications (1)

Publication Number Publication Date
JP2004312971A true JP2004312971A (en) 2004-11-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003130869A Pending JP2004312971A (en) 2003-04-02 2003-04-02 Inverter device

Country Status (1)

Country Link
JP (1) JP2004312971A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100983684B1 (en) 2006-10-11 2010-09-24 산요 세미컨덕터 컴퍼니 리미티드 Voltage generation circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100983684B1 (en) 2006-10-11 2010-09-24 산요 세미컨덕터 컴퍼니 리미티드 Voltage generation circuit

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