JPH07303366A - Snubber energy regenerative circuit - Google Patents
Snubber energy regenerative circuitInfo
- Publication number
- JPH07303366A JPH07303366A JP6094298A JP9429894A JPH07303366A JP H07303366 A JPH07303366 A JP H07303366A JP 6094298 A JP6094298 A JP 6094298A JP 9429894 A JP9429894 A JP 9429894A JP H07303366 A JPH07303366 A JP H07303366A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- self
- extinguishing element
- snubber
- capacitor
- 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
Links
Classifications
-
- 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
Landscapes
- Power Conversion In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＧＴＯ素子等の自己消
孤素子を主回路に使用した電力変換装置のスナバ回路の
コンデンサに充電されるエネルギを回生するスナバエネ
ルギ回生回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snubber energy regenerating circuit that regenerates energy charged in a capacitor of a snubber circuit of a power converter using a self-extinguishing element such as a GTO element in a main circuit.
【０００２】[0002]
【従来の技術】従来のスナバエネルギ回生回路の一例を
図１０に示す。Ｇ１はインバータのアームを構成する主
ＧＴＯ素子Ｇ１、ＳはＧ１と並列に接続されたダイオー
ドＤ１とスナバコンデンサＣ１からなるスナバ回路、Ｌ
１はＧＴＯ素子Ｇ１のアノード側に接続された電流変化
抑制用リアクトル、ＣＴ１はエネルギ回生用変流器で、
その１次巻線はダイオードＤ１とスナバコンデンサＣ１
との橋絡点と複数のダイオードを直列に接続した直列ダ
イオードＤのアノード側に接続され、２次側はリアクト
ルＬ２と図示方向のダイオードＤ２２を介して直流電源
ＰおよびＮに接続されている。なお、ダイオードＤのカ
ソード側はインバータのアームの電源Ａに接続されてい
る。2. Description of the Related Art An example of a conventional snubber energy regeneration circuit is shown in FIG. G1 is a main GTO element G1 forming an arm of the inverter, S is a snubber circuit composed of a diode D1 and a snubber capacitor C1 connected in parallel with G1, and L
Reference numeral 1 is a current change suppressing reactor connected to the anode side of the GTO element G1, and CT1 is a current transformer for energy regeneration.
The primary winding is a diode D1 and a snubber capacitor C1.
Is connected to the anode side of a series diode D in which a plurality of diodes are connected in series, and the secondary side is connected to DC power supplies P and N via a reactor L2 and a diode D22 in the illustrated direction. The cathode side of the diode D is connected to the power supply A of the inverter arm.
【０００３】ＧＴＯ素子Ｇ１がオフ時にスナバコンデン
サＣ１はリアクトルＬ１、ダイオードＤ１の回路で充電
される。ＧＴＯ素子Ｇ１が点弧されオンすると、スナバ
コンデンサＣ１の電荷は図１１（ａ）に示すようにスナ
バコンデンサＣ１→ＣＴ１→Ｄ→Ｌ１→Ｇ１→Ｃ１の閉
回路で放電し、電流（Ｉ１）を変流器ＣＴ１の１次側に
流す。スナバコンデンサＣ１にかかる電圧がほぼゼロと
なった後、図１１（ｂ）に示すようにＣＴ１→Ｄ→Ｌ１
→Ｄ１→ＣＴ１の閉回路で電流が流れる。When the GTO element G1 is off, the snubber capacitor C1 is charged by the circuit of the reactor L1 and the diode D1. When the GTO element G1 is ignited and turned on, the electric charge of the snubber capacitor C1 is discharged in the closed circuit of the snubber capacitor C1 → CT1 → D → L1 → G1 → C1 as shown in FIG. 11 (a), and the current (I1) is discharged. Flow to the primary side of the current transformer CT1. After the voltage applied to the snubber capacitor C1 becomes almost zero, CT1 → D → L1 as shown in FIG. 11 (b).
→ Current flows in the closed circuit of D1 → CT1.
【０００４】変流器ＣＴ１の１次側電流（Ｉ１）および
２次側電流（Ｉ２）は図１２に示すように流れる。この
ため、期間ｔ１〜ｔ３はエネルギが変流器ＣＴ１の２次
側から直流電源Ｐ、Ｎ間に回生される。The primary side current (I1) and secondary side current (I2) of the current transformer CT1 flow as shown in FIG. Therefore, in the periods t1 to t3, energy is regenerated between the DC power supplies P and N from the secondary side of the current transformer CT1.
【０００５】[0005]
【発明が解決しようとする課題】期間ｔ３〜ｔ４は変流
器ＣＴ１の残留磁束をリセットするための時間となり、
エネルギは回生されない。このリセット期間ｔ３〜ｔ４
は図１１（ｃ）に示すように、電流（Ｉ１）はＣＴ１→
Ｄ→Ｌ１→Ｄ１→ＣＴ１の閉経路を流れる。The period from t3 to t4 is the time for resetting the residual magnetic flux of the current transformer CT1.
Energy is not regenerated. This reset period t3 to t4
Shows the current (I1) is CT1 →
It flows through a closed path of D → L1 → D1 → CT1.
【０００６】このリセット期間ｔ３〜ｔ４が長くリセッ
ト期間が終了しないうちにＧＴＯ素子Ｇ１がオンし、再
度回生すると変流器ＣＴ１が飽和し回生不能となる。こ
のため、この回生回路を用いた電力変換装置は高周波で
使用できなくなる。When the reset period t3 to t4 is long and the GTO element G1 is turned on before the reset period is completed and the regeneration is performed again, the current transformer CT1 is saturated and the regeneration cannot be performed. For this reason, the power converter using this regenerative circuit cannot be used at high frequencies.
【０００７】本発明は、従来のこのような問題点に鑑み
てなされたものであり、その目的とするところは、高周
波での使用を可能にするスナバエネルギ回生回路を提供
することにある。The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a snubber energy regenerating circuit which can be used at a high frequency.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明におけるスナバエネルギの回生回路は、主回
路に自己消孤素子を用いた電力変換回路におけるスナバ
回路コンデンサの電荷を回生用変流器の１次巻線あるい
はリアクトルに流し、その２次巻線あるいはリアクトル
の出力を整流して直流側に回生する回路において、スナ
バコンデンサと前記主回路の陽極側との間に前記変流器
あるいはリアクトルと直列に補助自己消弧素子を接続し
て主回路自己消弧素子素子と同時にオンし回生完了後、
主回路自己消弧素子のオフする前にオフさせることを特
徴とする。また、同様の目的で主回路自己消孤素子を用
いた電力変換回路におけるスナバコンデンサのエネルギ
をリアクトルに移しリアクトルのエネルギをダイオード
を介して直流電源に回生する回路において、前記スナバ
コンデンサのエネルギが前記リアクトルに移動完了後、
主回路自己消弧素子Ｇ１をオフする前に補助自己消弧素
子Ｇｓ１をオフすることを特徴とするスナバエネルギの
回生回路。In order to achieve the above object, the snubber energy regenerating circuit according to the present invention uses a charge for regenerating the snubber circuit capacitor in a power conversion circuit using a self-extinguishing element in a main circuit. In a circuit in which a current is passed through a primary winding or a reactor of a current transformer and the output of the secondary winding or the reactor is rectified and regenerated to a DC side, the current transformer is provided between a snubber capacitor and the anode side of the main circuit. Or after connecting the auxiliary self-extinguishing element in series with the reactor and turning on at the same time as the main circuit self-extinguishing element element, after completion of regeneration,
It is characterized in that it is turned off before the main circuit self-extinguishing element is turned off. Further, for the same purpose, in the circuit for transferring the energy of the snubber capacitor in the power conversion circuit using the main circuit self-extinguishing element to the reactor and regenerating the energy of the reactor to the DC power source through the diode, the energy of the snubber capacitor is After moving to the reactor,
A snubber energy regenerative circuit characterized by turning off the auxiliary self-extinguishing element Gs1 before turning off the main circuit self-extinguishing element G1.
【０００９】[0009]
【作用】主回路自己消弧素子のオンと同時に補助自己消
孤素子をオンさせるとスナバコンデンサの電荷は回生用
の変流器あるいはリアクトルに流れ、コンデンサのエネ
ルギは変流器あるいはリアクトルに蓄積される。コンデ
ンサのエネルギが変流器あるいはリアクトルに移動した
後、補助自己消孤素子をオフさせると変流器あるいはリ
アクトルに蓄積されたエネルギはダイオードを介して直
流電源に回生される。[Function] When the main circuit self-extinguishing element is turned on and the auxiliary self-extinguishing element is turned on at the same time, the electric charge of the snubber capacitor flows to the current transformer or reactor for regeneration, and the energy of the capacitor is accumulated in the current transformer or reactor. It When the auxiliary self-extinguishing element is turned off after the energy of the capacitor moves to the current transformer or reactor, the energy stored in the current transformer or reactor is regenerated to the DC power source via the diode.
【００１０】[0010]
【実施例】本発明の実施例を図面に基づいて説明する。
なお、各実施例において従来図１２に示したものと同一
構成部分には同一符号を付してその重複する説明を省略
する。Embodiments of the present invention will be described with reference to the drawings.
In each embodiment, the same components as those shown in FIG. 12 of the related art are designated by the same reference numerals, and the duplicated description will be omitted.
【００１１】実施例１ 図１は実施例１のインバータの１アーム分の回路を示
す。端子ＰおよびＮはインバータの直流電源端子であ
り、一方、端子Ｕはアームの交流端子、Ｄｆ１は補助ダ
イオードで変流器ＣＴ１の１次巻線と直列に接続され、
この直列回路は主ＧＴＯ素子Ｇ１と逆並列に接続され
る。Ｇｓ１はスナバコンデンサＣ１の電荷を変流器を通
して放電させるための補助ＧＴＯ素子でＣ１，Ｄ１の橋
絡点とＤｆ１，ＣＴ１の１次巻線の橋絡点の間に接続さ
れる。なお、接続の極性方向はスナバ回路のＣ１とＤ１
の橋絡位置によって異なる。First Embodiment FIG. 1 shows a circuit for one arm of the inverter of the first embodiment. The terminals P and N are the DC power supply terminals of the inverter, while the terminal U is the AC terminal of the arm and Df1 is an auxiliary diode connected in series with the primary winding of the current transformer CT1,
This series circuit is connected in anti-parallel with the main GTO element G1. Gs1 is an auxiliary GTO element for discharging the electric charge of the snubber capacitor C1 through a current transformer, and is connected between the bridge point of C1 and D1 and the bridge point of the primary winding of Df1 and CT1. The connection polarity direction is C1 and D1 of the snubber circuit.
It depends on the bridge position.
【００１２】次に、この実施例１の動作を図２（ａ）〜
（ｄ）および図３に基づいて説明する。まず、図２
（ａ）において主ＧＴＯ素子Ｇ１および補助ＧＴＯ素子
Ｇｓ１がオフの状態時には、スナバコンデンサＣ１は図
示した極性に充電されている。この状態でＧ１，Ｇｓ１
を図３のｔ１で同時にオンするとＣ１→Ｇ１→ＣＴ１→
Ｇｓ１→Ｃ１よる閉回路においてスナバコンデンサＣ１
の電荷が放電し放電電流（Ｉ１）を生じると同時に変流
器ＣＴ１の２次側からスナバコンデンサＣ１のエネルギ
ーを直流電源側に回生する２次電流が流れる。Next, the operation of the first embodiment will be described with reference to FIGS.
A description will be given based on (d) and FIG. First, FIG.
In (a), when the main GTO element G1 and the auxiliary GTO element Gs1 are off, the snubber capacitor C1 is charged to the polarity shown. G1 and Gs1 in this state
3 are simultaneously turned on at t1 in FIG. 3, C1 → G1 → CT1 →
Snubber capacitor C1 in the closed circuit by Gs1 → C1
At the same time as the discharge of the electric current occurs to generate a discharge current (I1), a secondary current that regenerates the energy of the snubber capacitor C1 to the DC power source side flows from the secondary side of the current transformer CT1.
【００１３】図３のｔ２において、スナバコンデンサＣ
１の直流電圧がゼロとなった後、図２（ｂ）に示すよう
に変流器ＣＴ１の１次電流（Ｉ１）は、ＣＴ１→Ｇｓ１
→Ｄ１→ＣＴ１による閉回路を形成し変流器ＣＴ１で蓄
積されたエネルギにより、循環電流（Ｉ１）が流れる。
一方、図３のＰ点（ｔ３）で変流器２次側電流はゼロと
なるが、１次電流のみが流れる。この電流（Ｉ１）は、
変流器ＣＴ１の残留磁束をリセットするための電流でリ
セット電流と称する。At t2 in FIG. 3, the snubber capacitor C
After the DC voltage of 1 becomes zero, the primary current (I1) of the current transformer CT1 becomes CT1 → Gs1 as shown in FIG. 2 (b).
Circulating current (I1) flows due to the energy accumulated in the current transformer CT1 by forming a closed circuit by → D1 → CT1.
On the other hand, at the point P (t3) in FIG. 3, the secondary current of the current transformer becomes zero, but only the primary current flows. This current (I1) is
The current for resetting the residual magnetic flux of the current transformer CT1 is called a reset current.
【００１４】図３のｔ４からｔ５の間において、補助Ｇ
ＴＯ素子Ｇｓ１をオフすると、図２（ｃ）に示すように
循環電流（Ｉ１）はＣＴ１→Ｄｆ１→Ｇ１→ＣＴ１によ
る閉回路を形成する。Between t4 and t5 in FIG. 3, the auxiliary G
When the TO element Gs1 is turned off, the circulating current (I1) forms a closed circuit of CT1 → Df1 → G1 → CT1 as shown in FIG. 2 (c).
【００１５】図３のｔ５において、図２（ｄ）に示すよ
うに、主ＧＴＯ素子Ｇ１をオフすると主ＧＴＯ素子Ｇ１
の電位が上昇し、スナバコンデンサＣ１の電位が上昇す
る。このためリセット電流が急減し、変流器ＣＴ１のリ
セット期間を短縮できる。At t5 of FIG. 3, as shown in FIG. 2D, when the main GTO element G1 is turned off, the main GTO element G1 is turned on.
Rises, and the potential of the snubber capacitor C1 rises. Therefore, the reset current sharply decreases, and the reset period of the current transformer CT1 can be shortened.
【００１６】この結果、変流器ＣＴ１のリセット期間ｔ
３〜ｔ６を短縮させることにより高周波に適用可能とな
るとともに、図１０に示した直列ダイオードＤを省略で
き、小形化、高効率化が図れる。As a result, the reset period t of the current transformer CT1
By shortening 3 to t6, it can be applied to a high frequency, and the series diode D shown in FIG. 10 can be omitted, so that miniaturization and high efficiency can be achieved.
【００１７】実施例２ 図４は実施例２のインバータの１アーム分の回路を示
す。この回路では１アーム構成とし素子を２直列として
いる。端子ＰおよびＮはインバータの直流電源端子であ
り、一方、端子Ｕはアームの交流端子、スナバ回路はコ
ンデンサＣ１，Ｃ２およびダイオードＤ１，Ｄ２により
構成されている。一方、回生用リアクトルＬ２と補助ダ
イオードＤｆ３の直列回路は直流回路にエネルギーを回
生する回路である。Second Embodiment FIG. 4 shows a circuit for one arm of the inverter of the second embodiment. In this circuit, one arm structure is used and two elements are connected in series. The terminals P and N are DC power supply terminals of the inverter, while the terminal U is composed of an AC terminal of the arm and the snubber circuit is composed of capacitors C1 and C2 and diodes D1 and D2. On the other hand, the series circuit of the regenerative reactor L2 and the auxiliary diode Df3 is a circuit for regenerating energy in the DC circuit.
【００１８】本発明は主ＧＴＯ素子を直列接続した場合
の回生回路で補助ＧＴＯ素子２個使用して従来の欠点を
解決したスナバエネルギの回生回路である。図５（ａ）
〜（ｄ）および図６に基づき動作原理を説明する。The present invention is a snubber energy regenerative circuit that solves the conventional drawback by using two auxiliary GTO elements in a regenerative circuit in which main GTO elements are connected in series. Figure 5 (a)
The operation principle will be described with reference to FIGS.
【００１９】図５（ａ）において、主ＧＴＯ素子Ｇ１，
Ｇ２および補助ＧＴＯ素子Ｇｓ１，Ｇｓ２が同時にオフ
している状態から主ＧＴＯ素子Ｇ１，Ｇ２および補助Ｇ
ＴＯ素子Ｇｓ１，Ｇｓ２を図６のｔ１で同時に点弧させ
ると、スナバコンデンサＣ１およびＣ２に蓄えられた電
荷は放電電流（Ｉ１）として、Ｃ１→Ｇ１→Ｇ２→Ｃ２
→Ｇｓ２→ＣＴ１→Ｇｓ１→Ｃ１からなる閉回路を流れ
る。In FIG. 5A, the main GTO element G1,
From the state in which the G2 and the auxiliary GTO elements Gs1 and Gs2 are simultaneously turned off, the main GTO elements G1 and G2 and the auxiliary GTO
When the TO elements Gs1 and Gs2 are simultaneously ignited at t1 in FIG. 6, the charges stored in the snubber capacitors C1 and C2 become C1 → G1 → G2 → C2 as a discharge current (I1).
→ Flows through a closed circuit consisting of Gs2 → CT1 → Gs1 → C1.
【００２０】図６のｔ２において、スナバコンデンサＣ
１，Ｃ２の電圧がゼロとなった後、図５（ｂ）に示すよ
うに変流器ＣＴ１の１次電流はＣＴ１→Ｇｓ１→Ｄ１→
Ｄ２→Ｇｓ２→ＣＴ１の閉回路を通して循環電流（Ｉ
１）が流れる。図６のＰ点（ｔ３）において回生が終了
し変流器２次側電流がゼロとなると１次側のリセット電
流のみが流れる。At t2 in FIG. 6, the snubber capacitor C
After the voltages of 1 and C2 become zero, the primary current of the current transformer CT1 is CT1 → Gs1 → D1 →, as shown in FIG. 5 (b).
Circulating current (I) through a closed circuit of D2 → Gs2 → CT1
1) flows. At point P (t3) in FIG. 6, when the regeneration is completed and the current transformer secondary side current becomes zero, only the primary side reset current flows.
【００２１】図６のｔ４からｔ５の間で補助ＧＴＯ素子
ＧＳ１，ＧＳ２がオフすると図５（ｃ）に示すように変
流器ＣＴ１のリセット電流（Ｉ１）は、ＣＴ１→Ｄｆ１
→Ｇ１→Ｇ２→Ｄｆ２→ＣＴ１の閉回路に移る。When the auxiliary GTO elements GS1 and GS2 are turned off between t4 and t5 in FIG. 6, the reset current (I1) of the current transformer CT1 is CT1 → Df1 as shown in FIG. 5 (c).
→ Go to the closed circuit of G1 → G2 → Df2 → CT1.
【００２２】図６のｔ５で主ＧＴＯ素子Ｇ１，Ｇ２をオ
フにすると図５（ｄ）に示すように主ＧＴＯ素子の電位
が上昇してスナバコンデンサＣ１，Ｃ２の電圧が上昇
し、変流器ＣＴ１のリセット電流は急減する。これによ
り、変流器ＣＴ１のリセット時間が短縮できる。When the main GTO elements G1 and G2 are turned off at t5 in FIG. 6, the potential of the main GTO element rises and the voltages of the snubber capacitors C1 and C2 rise, as shown in FIG. The reset current of CT1 sharply decreases. Thereby, the reset time of the current transformer CT1 can be shortened.
【００２３】実施例３ 図７は実施例３のインバータの１相分の回路を示す。Ｐ
側アームとＮ側アームのスナバ回路はコンデンサＣ１，
Ｃ１１の中点が交流出力側Ｕとなるように接続されてい
る。Third Embodiment FIG. 7 shows a circuit for one phase of the inverter of the third embodiment. P
The snubber circuits of the side arm and the N side arm are capacitors C1,
The middle point of C11 is connected to the AC output side U.
【００２４】本発明はＧＴＯを使用する場合の回生回路
で補助をＧＴＯ２個使用して従来の欠点を解決したスナ
バエネルギの回生回路である。図８（ａ）〜（ｃ）およ
び図９に基づき動作原理を示す。The present invention is a snubber energy regenerative circuit that solves the conventional drawback by using two GTOs as an auxiliary in the regenerative circuit when using the GTO. The operation principle will be described with reference to FIGS. 8A to 8C and FIG. 9.
【００２５】インバータ動作時には１相分アームのう
ち、正極性側アームＧ１と負極性アームＧ１１側とは交
互にオン、オフが繰り返されるが、図８（ａ）におい
て、主ＧＴＯ素子Ｇ１，Ｇ１１がデッドタイム時のオフ
状態から、図９のｔ１において主ＧＴＯ素子Ｇ１がオフ
からオンになった時、同時に補助ＧＴＯ素子Ｇｓ１，Ｇ
ｓ２をオンすることにより、スナバコンデンサＣ１の電
荷は、Ｃ１→Ｇ１→Ｄ１１→Ｇｓ２→Ｌ→Ｇｓ１→Ｃ１
による閉回路を形成し、放電電流（Ｉ１）が流れる。During the inverter operation, the positive-side arm G1 and the negative-side arm G11 side of the one-phase arm are alternately turned on and off repeatedly. In FIG. 8A, the main GTO elements G1 and G11 are turned on. When the main GTO element G1 is turned on from the off state at the dead time at t1 in FIG. 9, the auxiliary GTO elements Gs1 and Gs1
By turning on s2, the electric charge of the snubber capacitor C1 is C1 → G1 → D11 → Gs2 → L → Gs1 → C1.
To form a closed circuit, and a discharge current (I1) flows.
【００２６】図９のｔ２において、スナバコンデンサＣ
１の電圧がゼロになった時以降は図８（ｂ）に示すよう
に循環電流（Ｉ１）が流れる。Ｌ→Ｇｓ１→Ｄ１→Ｄ１
１→Ｇｓ２→Ｌによる閉回路を流れる循環電流（Ｉ１）
は、その経路のインダクタンスＬ、ダイオードＤ１，Ｄ
２の順方向電圧および補助ＧＴＯ素子Ｇｓ１，Ｇｓ２の
オン電圧の和で決まるｄｉ／ｄｔで緩やかに減少する。At t2 in FIG. 9, the snubber capacitor C
After the voltage of 1 becomes zero, the circulating current (I1) flows as shown in FIG. 8 (b). L → Gs1 → D1 → D1
Circulation current (I1) flowing in a closed circuit due to 1 → Gs2 → L
Is the inductance L of the path and the diodes D1 and D
It gradually decreases at di / dt determined by the sum of the forward voltage of 2 and the ON voltage of the auxiliary GTO elements Gs1 and Gs2.
【００２７】その後、図９のｔ３において、主ＧＴＯ素
子Ｇ１および補助ＧＴＯ素子Ｇｓ１，Ｇｓ２を同時にオ
フにすると、図８（ｃ）のように電流が流れ、スナバコ
ンデンサＣ１のエネルギは直流電源側へ回生される。図
９に示すように、補助ＧＴＯ素子Ｇｓ１，Ｇｓ２オフ後
の電流（Ｉ１）は直流電圧とインダクタンスＬで決まる
値（ｄｉ／ｄｔ）、すなわち直流電圧（Ｅｄｃ）をイン
ダクタンス（Ｌ）で除した値（−Ｅｄｃ／Ｌ）で急激に
減少する。After that, at t3 in FIG. 9, when the main GTO element G1 and the auxiliary GTO elements Gs1 and Gs2 are turned off at the same time, a current flows as shown in FIG. 8C, and the energy of the snubber capacitor C1 goes to the DC power source side. Regenerated. As shown in FIG. 9, the current (I1) after turning off the auxiliary GTO elements Gs1 and Gs2 is a value (di / dt) determined by the DC voltage and the inductance L, that is, a value obtained by dividing the DC voltage (Edc) by the inductance (L). (-Edc / L) sharply decreases.
【００２８】[0028]
【発明の効果】本発明は、上述のとうり構成されてお
り、次に記載するような効果を奏する。 （１）実施例１、２のものは、回生用変流器のリセット
期間が短縮できるので、高周波で使用することができ
る。The present invention is constructed as described above and has the following effects. (1) In the first and second embodiments, the reset period of the regenerative current transformer can be shortened, so that the current transformer can be used at a high frequency.
【００２９】（２）実施例３のものは、回生用変流器を
使用せずに回生できるので、変流器を用いたものに比し
部品点数の低減ができ小形化、効率化ができ、また、変
流器の場合と同様にリセット期間が短縮可能となる。(2) Since the device of the third embodiment can be regenerated without using the current transformer for regeneration, the number of parts can be reduced and the size and efficiency can be improved as compared with the device using the current transformer. Also, the reset period can be shortened as in the case of the current transformer.
【図１】実施例１を示す回路図FIG. 1 is a circuit diagram showing a first embodiment.
【図２】実施例１の動作説明用回路図FIG. 2 is a circuit diagram for explaining the operation of the first embodiment.
【図３】実施例１の電流波形図FIG. 3 is a current waveform diagram of Example 1.
【図４】実施例２を示す回路図FIG. 4 is a circuit diagram showing a second embodiment.
【図５】実施例２の動作説明用回路図FIG. 5 is a circuit diagram for explaining the operation of the second embodiment.
【図６】実施例２の電流波形図FIG. 6 is a current waveform diagram of Example 2.
【図７】実施例３を示す回路図FIG. 7 is a circuit diagram showing a third embodiment.
【図８】実施例３の動作説明用回路図FIG. 8 is a circuit diagram for explaining the operation of the third embodiment.
【図９】実施例３の電流波形図FIG. 9 is a current waveform diagram of Example 3.
【図１０】従来例を示す回路図FIG. 10 is a circuit diagram showing a conventional example.
【図１１】従来例の動作説明用回路図FIG. 11 is a circuit diagram for explaining the operation of a conventional example.
【図１２】従来例の電流波形図FIG. 12 is a current waveform diagram of a conventional example.
Ｃ１，Ｃ２：スナバコンデンサ Ｄ１，Ｄ２：ダイオード Ｄ：複数個のダイオードを直列に接続した直列ダイオー
ド Ｄ２２：二次側回路の整流用ダイオード Ｓ，Ｓ１，Ｓ２，Ｓ１１：スナバ保護回路 Ｇ１，Ｇ２：主自己消弧素子 Ｇｓ１，Ｇｓ２：補助自己消弧素子 Ｌ１：電流変化抑制用リアクトル Ｌ２：二次側回路のリアクトル Ｕ，Ｖ：交流端子 Ｐ，Ｎ：インバータの直流電源端子C1, C2: Snubber capacitors D1, D2: Diode D: Series diode in which a plurality of diodes are connected in series D22: Rectifying diode for secondary side circuit S, S1, S2, S11: Snubber protection circuit G1, G2: Main Self-extinguishing element Gs1, Gs2: Auxiliary self-extinguishing element L1: Reactor for suppressing current change L2: Reactor of secondary side circuit U, V: AC terminal P, N: DC power supply terminal of inverter
Claims (3)
路におけるコンデンサおよびダイオードからなるスナバ
回路のコンデンサの電荷を回生用変流器の１次巻線に流
し、その２次巻線の出力を整流して直流電源側に回生す
る回路において、 主自己消弧素子と並列に接続されたスナバ回路に補助自
己消弧素子、補助ダイオード及び変流器１次巻線を接続
してなる構成で、かつ変流器の２次側に帰還用ダイオー
ドおよび限流リアクトルを接続し、前記の補助自己消弧
素子を主自己消弧素子のオンとほぼ同時にオンし、回生
終了後、該主自己消弧素子をオフする前に補助自己消弧
素子をオフすることを特徴とするスナバコンデンサのエ
ネルギ回生回路。1. A charge of a capacitor of a snubber circuit composed of a capacitor and a diode in a power conversion circuit using a self-extinguishing element in a main circuit is caused to flow to a primary winding of a regenerative current transformer, and its secondary winding is In a circuit that rectifies the output and regenerates it on the DC power supply side, a configuration in which an auxiliary self-extinguishing element, an auxiliary diode, and a current transformer primary winding are connected to a snubber circuit that is connected in parallel with the main self-extinguishing element. And a feedback diode and a current limiting reactor are connected to the secondary side of the current transformer, and the auxiliary self-extinguishing element is turned on almost at the same time when the main self-extinguishing element is turned on. An energy regeneration circuit for a snubber capacitor, characterized in that an auxiliary self-extinguishing element is turned off before turning off the extinguishing element.
路におけるコンデンサおよびダイオードからなるスナバ
回路のコンデンサの電荷を回生用変流器の１次巻線に流
し、その２次巻線の出力を整流して直流電源側に回生す
る回路において、 主自己消弧素子と並列に接続されている２つのスナバ回
路の中点に補助自己消弧素子、補助ダイオードおよび変
流器を接続してなる構成で、かつ、変流器の２次側に帰
還用ダイオードおよび限流リアクトルを接続し、前記の
補助自己消弧素子を主回路消弧素子のオンとほぼ同時に
オンし、回生完了後、該主回路自己消弧素子をオフする
前に補助自己消弧素子をオフすることを特徴とするスナ
バコンデンサのエネルギ回生回路。2. A charge of a capacitor of a snubber circuit composed of a capacitor and a diode in a power conversion circuit using a self-extinguishing element in a main circuit is caused to flow through a primary winding of a regenerative current transformer, and the secondary winding In a circuit that rectifies the output and regenerates it on the DC power supply side, connect an auxiliary self-extinguishing element, an auxiliary diode and a current transformer to the middle point of two snubber circuits that are connected in parallel with the main self-extinguishing element. And a feedback diode and a current limiting reactor connected to the secondary side of the current transformer, and the auxiliary self-extinguishing element is turned on almost at the same time when the main circuit arc extinguishing element is turned on. An energy regenerating circuit for a snubber capacitor, characterized in that the auxiliary self-extinguishing element is turned off before turning off the main circuit self-extinguishing element.
路におけるコンデンサおよびダイオードからなるスナバ
回路のコンデンサの電荷を回生用リアクトルに移したリ
アクトルのエネルギをダイオードを介して直流電源側に
回生する回路において、 主自己消弧素子と並列に接続されている２つのスナバ回
路の中点に補助自己消弧素子を陽極側アームおよび陰極
側アームにそれぞれ接続し、この補助自己消弧素子間に
リアクトルを接続し、該補助自己消弧素子を主自己消弧
素子と同時に点弧することによりスナバコンデンサのエ
ネルギを前記リアクトルに蓄積し、その後補助自己消弧
素子をオフにして直流電源側にエネルギを回生すること
を特徴とするスナバエネルギ回生回路。3. The energy of the reactor obtained by transferring the electric charge of the capacitor of the snubber circuit composed of the capacitor and the diode in the power conversion circuit using the self-extinguishing element to the main circuit to the regenerative reactor to the DC power source side via the diode. In this circuit, the auxiliary self-extinguishing element is connected to the anode side arm and the cathode side arm at the midpoint of the two snubber circuits connected in parallel with the main self-extinguishing element. Energy of the snubber capacitor is stored in the reactor by connecting the reactor and igniting the auxiliary self-extinguishing element at the same time as the main self-extinguishing element. A snubber energy regenerative circuit characterized by regenerating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6094298A JPH07303366A (en) | 1994-05-06 | 1994-05-06 | Snubber energy regenerative circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6094298A JPH07303366A (en) | 1994-05-06 | 1994-05-06 | Snubber energy regenerative circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07303366A true JPH07303366A (en) | 1995-11-14 |
Family
ID=14106371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6094298A Pending JPH07303366A (en) | 1994-05-06 | 1994-05-06 | Snubber energy regenerative circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07303366A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5947389A (en) * | 1996-06-06 | 1999-09-07 | Zexel Corporation | Variable nozzle hole type fuel injection nozzle |
-
1994
- 1994-05-06 JP JP6094298A patent/JPH07303366A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5947389A (en) * | 1996-06-06 | 1999-09-07 | Zexel Corporation | Variable nozzle hole type fuel injection nozzle |
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