JPH0526431B2 - - Google Patents
Info
- Publication number
- JPH0526431B2 JPH0526431B2 JP57152613A JP15261382A JPH0526431B2 JP H0526431 B2 JPH0526431 B2 JP H0526431B2 JP 57152613 A JP57152613 A JP 57152613A JP 15261382 A JP15261382 A JP 15261382A JP H0526431 B2 JPH0526431 B2 JP H0526431B2
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- snubber
- self
- inverter device
- turned
- 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.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 35
- 101100449818 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ECM4 gene Proteins 0.000 description 5
- 101100449817 Schizosaccharomyces pombe (strain 972 / ATCC 24843) gto2 gene Proteins 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Description
【発明の詳細な説明】
本発明は自己消弧形スイツチング素子から成る
インバータ装置に係り、特に上記スイツチング素
子に並列接続されるスナバ回路の損失を低減する
のに好適なインバータ装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inverter device comprising a self-extinguishing switching element, and more particularly to an inverter device suitable for reducing loss in a snubber circuit connected in parallel to the switching element.
トランジスタやゲートターンオフサイリスタ等
の自己消弧形スイツチング素子には、ターンオフ
時の印加電圧を吸収するために、通常スナバ回路
が並列接続される。スナバ回路は一般にはコンデ
ンサと抵抗とを含み、このコンデンサは上記スイ
ツチング素子のターンオフ時には充電され、ター
ンオン時には上記抵抗を介して放電される。従つ
て上記スイツチング素子をオンオフすれば、スナ
バ回路に損失が生ずる（その損失の大部分は抵抗
の熱損失である。）。 Self-extinguishing switching elements such as transistors and gate turn-off thyristors are usually connected in parallel with a snubber circuit in order to absorb the voltage applied during turn-off. A snubber circuit generally includes a capacitor and a resistor, the capacitor being charged when the switching element is turned off and discharged through the resistor when the switching element is turned on. Therefore, when the switching element is turned on and off, a loss occurs in the snubber circuit (most of the loss is heat loss in the resistance).
インバータ装置をこのようなスナバ回路付きの
自己消弧形スイツチング素子で構成した場合、そ
の運転により必然的にスナバ回路損失が生ずる。
そしてインバータ駆動周波数の増大に伴つてスナ
バ回路損失も当然大きくなるのである。 When an inverter device is configured with such a self-extinguishing switching element with a snubber circuit, snubber circuit loss inevitably occurs during its operation.
Naturally, as the inverter drive frequency increases, the snubber circuit loss also increases.
従つて本発明の目的は、スナバ回路損失の極め
て小さいインバータ装置を提供することにある。 Therefore, an object of the present invention is to provide an inverter device with extremely low snubber circuit loss.
本発明の要点は、スナバ回路から抵抗を取り除
き、スナバコンデンサに蓄えられたエネルギー
を、スナバコンデンサと新たに設けたリアクトル
との共振回路を利用して電源側に返還するところ
にある。以下実地例にそつて本発明を詳述する。
説明の都合上、自己消弧形スイツチング素子とし
てはゲートターンオフサイリスタ（以下GTOと
略す）を例にとるが、本発芸GTOに限定される
わけではない。 The key point of the present invention is to remove the resistance from the snubber circuit and return the energy stored in the snubber capacitor to the power source using a resonant circuit between the snubber capacitor and a newly provided reactor. The present invention will be explained in detail below with reference to practical examples.
For convenience of explanation, a gate turn-off thyristor (hereinafter abbreviated as GTO) will be taken as an example of a self-extinguishing switching element, but the invention is not limited to the present GTO.
第１図は本発明を単相インバータに適用した実
施例である。図のように直流電源１の両電極間に
は、GTO２とGTO４とを直列接続した組と、
GTO６とGTO８とを直列接続した組とが接続さ
れ、GTO２とGTO４の接続点とGTO６とGTO
８の接続点との間には負荷１０が接続される。各
GTO２，４，６，８には、還流ダイオード１２，
１４，１６，１８がそれぞれ逆並列接続され（還
流ダイオードは電圧形インバータに必要で、電流
形インバータでは不要である）、さらにスナバコ
ンデンサ２２，２４，２６，２８とダイオード３
２，３４，３６，３８の直列接続体がそれぞれ逆
並列接続される。一方電流電源１の両電極間に
は、第１のコンデンサ４２と第２のコンデンサ４
４が直列接続される。このコンデンサ４２，４４
は常に電流電源１により充電されており、事実上
インバータの電源としての機能を有する。直流電
源１の電圧値をＥとすれば、各コンデンサ４２，
４４はそれぞれ電圧値Ｅ／２に分圧される。そし
てこのコンデンサ４２，４４の接続点と上記スナ
バコンデンサとダイオードの各接続点は、リアク
トル４６，４８とスイツチ素子（SW）５２，５
４，５６，５８を介してそれぞれ接続される。 FIG. 1 shows an embodiment in which the present invention is applied to a single-phase inverter. As shown in the figure, between both electrodes of DC power supply 1, there is a set of GTO2 and GTO4 connected in series,
A set in which GTO6 and GTO8 are connected in series is connected, and the connection point between GTO2 and GTO4 and the connection point between GTO6 and GTO
A load 10 is connected between the connection point 8 and the connection point 8. each
GTO2, 4, 6, 8 have freewheeling diodes 12,
14, 16, and 18 are connected in antiparallel, respectively (free-wheeling diodes are necessary for voltage source inverters, and unnecessary for current source inverters), and snubber capacitors 22, 24, 26, and 28 and diode 3 are connected.
2, 34, 36, and 38 series connections are connected in antiparallel, respectively. On the other hand, a first capacitor 42 and a second capacitor 4 are connected between both electrodes of the current power source 1.
4 are connected in series. This capacitor 42, 44
is always charged by the current power source 1, and effectively functions as a power source for the inverter. If the voltage value of the DC power supply 1 is E, each capacitor 42,
44 are each divided into voltage values E/2. The connection points between the capacitors 42 and 44 and the connection points between the snubber capacitor and the diode are connected to reactors 46 and 48 and switch elements (SW) 52 and 5.
4, 56, and 58, respectively.
第２図は第１図のインバータの動作説明図であ
る。図のようにGTO2とGTO８は同時にオンオ
フされ、GTO４とGTO６はそれらと逆の位相で
オンオフされる。これらのGTOがオンして微小
時間経過後、SW５２，５８，５４，５６がそれ
ぞれオンされる。これはスナバコンデンサに蓄積
されたエネルギーを電源側に返還するためであ
る。その返還方法を次に詳述する。 FIG. 2 is an explanatory diagram of the operation of the inverter shown in FIG. 1. As shown in the figure, GTO2 and GTO8 are turned on and off at the same time, and GTO4 and GTO6 are turned on and off in the opposite phase. After a short time elapses after these GTOs are turned on, SWs 52, 58, 54, and 56 are turned on, respectively. This is to return the energy stored in the snubber capacitor to the power supply side. The method of return will be explained in detail below.
まず第２図時刻t1ではGTO２，８はオフで
GTO４，６がオンの状態である。このとき負荷
電流は「42−６−10−４−44−42」の経路を流れ
ている。この時刻t1に先だつてGTO２，８がオ
フしGTO４，６がオンした時刻t0の直後、GTO
２，８のスナバ回路に電流が「42−22−32−４−
44−42」の経路と、「42−６−38−28−44−41」
の経路とに流れ、スナバコンデンサ２２，２８は
それぞせ図示の極性に電源電圧Ｅまで充電されて
いる。時刻t2でGTO２，８がオンしGTO４，６
がオフすると、負荷電流は「42−２−10−８−44
−42」の経路を流れる。このときスナバコンデン
サ２２，２８は独りでには放電しない。しかし時
刻t3でSW５２，５８をオンすると、２つの共振
回路「22−42−46−52−22」と「28−58−48−44
−28」とが形成される。スナバコンデンサ２２，
２８の電圧Ｅであり、コンデンサ４２，４４の電
圧がＥ／２であるため、その差Ｅ／２を電圧源と
して上記の共振回路が動作する。 First, at time t 1 in Figure 2, GTO 2 and 8 are off.
GTO4 and 6 are on. At this time, the load current is flowing through the path "42-6-10-4-44-42". Immediately after time t 0 when GTO 2 and 8 are turned off and GTO 4 and 6 are turned on prior to this time t 1 , GTO
The current in the snubber circuits 2 and 8 is 42-22-32-4-
44-42” route and “42-6-38-28-44-41”
The snubber capacitors 22 and 28 are each charged to the power supply voltage E with the polarity shown. At time t 2 , GTO2 and 8 are turned on and GTO4 and 6 are turned on.
is turned off, the load current becomes ``42-2-10-8-44
-42'' path. At this time, the snubber capacitors 22 and 28 do not discharge on their own. However, when SW52 and 58 are turned on at time t3 , two resonance circuits "22-42-46-52-22" and "28-58-48-44" are created.
-28'' is formed. snubber capacitor 22,
Since the voltage of the capacitors 42 and 44 is E/2, the above-mentioned resonant circuit operates using the difference E/2 as a voltage source.
すなわち、コンデンサ２２の電荷は、42−46−
52の経路で放電し、さらにコンデンサ２２の電圧
が０になつた後は、リアクトル４６の電流が32−
12−42の経路で流れつづけるので、スナバコンデ
ンサ２２のエネルギーが非常に効率よく電源コン
デンサ４２に回収される。 That is, the charge on the capacitor 22 is 42−46−
52, and after the voltage of the capacitor 22 becomes 0, the current of the reactor 46 becomes 32-
Since the energy continues to flow along the path 12-42, the energy in the snubber capacitor 22 is recovered to the power supply capacitor 42 very efficiently.
以上のように本発明は、電源電圧がＥ／２にな
るように電源コンデンサ４２，４４を分割し、電
源電圧Ｅまで充電されたスナバコンデンサとの電
圧差で共振回路を動作させたことに大きな特徴が
ある。SW５２，５８としてサイリスタを用いれ
ば、スナバコンデンサが放電した時点t4でSW５
２，５８は独りでにオフする。この動作はスナバ
コンデンサ２４，２６の放電のときも同様であ
る。 As described above, the present invention has a major advantage in that the power supply capacitors 42 and 44 are divided so that the power supply voltage becomes E/2, and the resonant circuit is operated by the voltage difference between the power supply capacitor 42 and the snubber capacitor charged to the power supply voltage E. It has characteristics. If thyristors are used as SW52 and 58 , SW5
2,58 turns off by itself. This operation is similar when the snubber capacitors 24 and 26 are discharged.
第３図は本発明を３相インバータに適用した実
施例である。図において、第１図と同符号のもの
は同一物を示す。ブロツク６４，６６はそれぞれ
破線ブロツク６２と同様な構成であり、各ブロツ
ク６２，６４，６６の出力は３相負荷１０１，１
０２，１０３にそれぞれ接続される。またコンデ
ンサ４２，４４の接続点はリアクトル４６，４
８，４９を介してそれぞれブロツク６２，６４，
６６に接続される。その動作は第１図の同様なの
で説明は省略する。 FIG. 3 shows an embodiment in which the present invention is applied to a three-phase inverter. In the figures, the same reference numerals as in FIG. 1 indicate the same parts. The blocks 64 and 66 have the same configuration as the broken line block 62, and the outputs of the blocks 62, 64 and 66 are the three-phase loads 101 and 1.
02 and 103, respectively. In addition, the connection point of capacitors 42 and 44 is connected to reactors 46 and 4.
8 and 49 respectively to blocks 62, 64,
66. The operation is similar to that shown in FIG. 1, so the explanation will be omitted.
以上のように本発明によれば、スナバコンデン
サのエネルギーを電源側に返還するものであるか
ら、スナバ回路損失の極めて小さいインバータ装
置を得ることができる。 As described above, according to the present invention, since the energy of the snubber capacitor is returned to the power supply side, it is possible to obtain an inverter device with extremely low snubber circuit loss.
第１図は本発明を単相インバータに適用した実
施例を示す図、第２図は第１図の動作説明図、第
３図は本発明を３相インバータに適用した実施例
を示す図である。
１……直流電源、２，４，６，８……GTO、
２２，２４，２６，２８……スナバコンデンサ、
３２，３４，３６，３８……ダイオード、４２，
４４……コンデンサ、４６，４８……リアクト
ル。
Fig. 1 is a diagram showing an embodiment in which the present invention is applied to a single-phase inverter, Fig. 2 is an explanatory diagram of the operation of Fig. 1, and Fig. 3 is a diagram showing an embodiment in which the present invention is applied to a three-phase inverter. be. 1...DC power supply, 2, 4, 6, 8...GTO,
22, 24, 26, 28... snubber capacitor,
32, 34, 36, 38...diode, 42,
44... Capacitor, 46, 48... Reactor.
Claims (1)
グ素子を直列接続したものを少なくとも１組接続
し、その直列接続点から出力を得るようにしたイ
ンバータ装置において、上記直流電源の両電極間
に接続される第１のコンデンサと第２のコンデン
サの直列接続体、上記自己消弧形スイツチング素
子のそれぞれに並列接続されるスナバコンデンサ
とダイオードの直列接続体、上記第１のコンデン
サと第２のコンデンサの接続点と上記スナバコン
デンサとダイオードの各接続点との間に接続され
るリアクトルとスイツチ素子の直列接続体を備
え、 上記自己消弧形スイツチング素子がオンして微
小時間経過後に上記スイツチ素子をオンすること
により、上記スナバコンデンサに蓄積されたエネ
ルギーを直流電源側に返還するようにしたことを
特徴とするインバータ装置。 ２ 特許請求の範囲第１項において、前記自己消
弧形スイツチング素子はゲートターンオフサイリ
スタであることを特徴とするインバータ装置。 ３ 特許請求の範囲第１項又は第２項において、
前記スイツチ素子はサイリスタであることを特徴
とするインバータ装置。[Scope of Claims] 1. An inverter device in which at least one set of self-arc-extinguishing switching elements connected in series is connected between both electrodes of a DC power source, and an output is obtained from the series connection point. a series connection body of a first capacitor and a second capacitor connected between both electrodes of the device, a series connection body of a snubber capacitor and a diode connected in parallel to each of the self-extinguishing switching elements, and the first capacitor A series connection body of a reactor and a switching element is connected between the connection point of the second capacitor and each connection point of the snubber capacitor and the diode, and the self-extinguishing switching element is turned on and a minute time elapses. An inverter device characterized in that the energy stored in the snubber capacitor is returned to the DC power source by turning on the switch element afterwards. 2. The inverter device according to claim 1, wherein the self-extinguishing switching element is a gate turn-off thyristor. 3 In claim 1 or 2,
An inverter device characterized in that the switch element is a thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15261382A JPS5944978A (en) | 1982-09-03 | 1982-09-03 | Inverter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15261382A JPS5944978A (en) | 1982-09-03 | 1982-09-03 | Inverter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5944978A JPS5944978A (en) | 1984-03-13 |
| JPH0526431B2 true JPH0526431B2 (en) | 1993-04-16 |
Family
ID=15544211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15261382A Granted JPS5944978A (en) | 1982-09-03 | 1982-09-03 | Inverter device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5944978A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5075838A (en) * | 1990-04-10 | 1991-12-24 | York International Corporation | Energy efficient voltage snubber circuit |
| JP5550648B2 (en) * | 2009-07-27 | 2014-07-16 | 三菱電機株式会社 | High frequency power supply |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5768672A (en) * | 1980-10-16 | 1982-04-27 | Toshiba Corp | Converter for power |
-
1982
- 1982-09-03 JP JP15261382A patent/JPS5944978A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5768672A (en) * | 1980-10-16 | 1982-04-27 | Toshiba Corp | Converter for power |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5944978A (en) | 1984-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4876635A (en) | Series resonant inverter with lossless snubber-resetting components | |
| US7646180B2 (en) | Power losses reduction in switching power converters | |
| US4611267A (en) | Snubber arrangements with energy recovery for power converters using self-extinguishing devices | |
| US4570212A (en) | Silicon controlled rectifier polyphase bridge inverter commutated with gate-turn-off thyristor | |
| JPS58151877A (en) | Inverter device | |
| JPH0526431B2 (en) | ||
| JPS6127989B2 (en) | ||
| JPH0667176B2 (en) | Gate turn-off thyristor device | |
| JPH0731158A (en) | Snubber energy recovery circuit for power converter | |
| JP2555621B2 (en) | Inverter energy recovery circuit | |
| JP2528811B2 (en) | Power converter | |
| JPH0336221Y2 (en) | ||
| JPH06189563A (en) | Inverter | |
| JPS589517Y2 (en) | Inverter device | |
| JPH0197175A (en) | Energy recovery circuit for inverter | |
| JPH06209580A (en) | Snubber energy recovery circuit of power converter | |
| JPH0221233B2 (en) | ||
| JPS62217864A (en) | Snubber circuit for inverter | |
| RU2249908C1 (en) | Power system of hysteresis motors | |
| JPS59226669A (en) | Inverter device | |
| JP3246159B2 (en) | DC-AC converter | |
| JPS60214564A (en) | Snubber circuit of gate turn-off thyristor | |
| JPS61170236A (en) | Snubber circuit for semiconductor switching element | |
| JPH0324152B2 (en) | ||
| JPH1175361A (en) | Snubber circuit of inverter |