JPH0191672A - Inverter device - Google Patents

Inverter device

Info

Publication number
JPH0191672A
JPH0191672A JP62246260A JP24626087A JPH0191672A JP H0191672 A JPH0191672 A JP H0191672A JP 62246260 A JP62246260 A JP 62246260A JP 24626087 A JP24626087 A JP 24626087A JP H0191672 A JPH0191672 A JP H0191672A
Authority
JP
Japan
Prior art keywords
circuit
switching
output
condenser
switching device
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
JP62246260A
Other languages
Japanese (ja)
Inventor
Keiichi Shimizu
恵一 清水
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.)
Toshiba Electric Equipment Corp
Original Assignee
Toshiba Electric Equipment Corp
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 Toshiba Electric Equipment Corp filed Critical Toshiba Electric Equipment Corp
Priority to JP62246260A priority Critical patent/JPH0191672A/en
Publication of JPH0191672A publication Critical patent/JPH0191672A/en
Pending legal-status Critical Current

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  • Inverter Devices (AREA)

Abstract

PURPOSE:To enhance conversion efficiency by providing with a pair of switching devices between both terminals of a partial pressure circuit and providing with an output circuit having a parallel resonance circuit between a node of these devices and a voltage dividing point of the partial pressure circuit. CONSTITUTION:When a switching device 24 is turned on, a condenser 22- an inductor 29- the device 24- a parallel resonance circuit 27- a closed circuit of the condenser 22 is constituted, and the circuit 27 generates the resonance output. Then, when the device 24 is off and a switching device 25 is on, a condenser 23- the circuit 27- the circuit 25- an inductor 30a closed circuit of the condenser 23 is constituted, and energy is stored in the condenser 30 so that the constant current operation is continuous regardless of switching by inductors 29 and 30. Accordingly, the circuit 27 generates the resonance output as well as the above. In addition, the capacity of condensers 22 and 23 at the partial pressure circuit 20 can be selected as required so that a ripple of the voltage dividing point can be optional.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は並列共振回路を備えたインバータ装置に関する
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an inverter device equipped with a parallel resonant circuit.

(従来の技術) 従来、この種装置として、いわゆる定電流形のブツシュ
グルインバータが知られている。このものは、第3図に
示すように、直流電源1に対し、スイッチング装置2.
3を出カドランス4の入力巻線4aを介して並列的に設
けるとともに、これらスイッチング装置2.3の入力側
に定電流用のインダクタ5を介挿し、前記出カドランス
4には入力巻線4aと並列に共振用のコンデンサ6を設
けたものである。
(Prior Art) As a device of this type, a so-called constant current type Bushgrue inverter is conventionally known. As shown in FIG. 3, this device has a DC power supply 1 and a switching device 2.
3 are provided in parallel via the input winding 4a of the output transformer 4, and a constant current inductor 5 is inserted on the input side of these switching devices 2.3. A resonance capacitor 6 is provided in parallel.

また、並列共振回路ではないが、直列共振回路を備えた
ものとして、いわゆるシリーズ形インバータが知られて
いる。このものは、第4図に示すように、直流電源10
の出力端子間に一対のスイッチング装置11.12を接
続するとともに、これらスイッチング装置11.12の
接続点と前記直流電源10の一方の出力端子との間に直
列共振回路13を設けたものである。
Also, a so-called series type inverter is known as an inverter having a series resonant circuit, but not a parallel resonant circuit. As shown in FIG.
A pair of switching devices 11 and 12 are connected between the output terminals of the switching devices 11 and 12, and a series resonant circuit 13 is provided between the connection point of these switching devices 11 and 12 and one output terminal of the DC power supply 10. .

(発明が解決しようとする問題点) しかしながら、第3図のものはスイッチング装置2,3
に加わる電圧が高く、高耐圧のスイッチング装置を用い
なければならず、この結果、高価になったり、一般に高
耐圧のスイッチング装置はスイッチング特性が劣るため
、スイッチング損失が増大したりする問題があった。す
なわち、第3図のものはスイッチング装置2,3の交互
のスイッチングに応じて出カドランス4のインダクタお
よび共振回路用コンデンサ6が並列共振するが、オフし
ているスイッチング装置には直流電源電圧のπ倍の電圧
が印加する。
(Problem to be solved by the invention) However, the switching device 2, 3 shown in FIG.
Since the voltage applied to the switch is high, a switching device with a high withstand voltage must be used, which results in an increase in price.In general, switching devices with a high withstand voltage have poor switching characteristics, resulting in increased switching loss. . That is, in the case of the one shown in FIG. 3, the inductor of the output transformer 4 and the resonant circuit capacitor 6 resonate in parallel in accordance with the alternate switching of the switching devices 2 and 3, but when the switching device is turned off, the DC power supply voltage π Double the voltage is applied.

第4図のものは、第3図のものに比しスイッチング装f
lL  12に加わる電圧は小さい、しかし、このもの
は、たとえば特公昭50−149号公報にも示されてい
るように、スイッチング装置。
The one in Figure 4 has a switching device f compared to the one in Figure 3.
The voltage applied to lL 12 is small, but this is a switching device, as shown in Japanese Patent Publication No. 50-149, for example.

11.12を直列共振回路13の共振出力と同相でスイ
ッチングさせることが困雌であるため、位相を異ならせ
てスイッチングさせている。このため、このものはスイ
ッチング損失が大きく、インバータどしての変換効率は
第3図のものより劣っている。
Since it is difficult to switch 11 and 12 in the same phase as the resonant output of the series resonant circuit 13, they are switched in different phases. Therefore, this device has a large switching loss, and its conversion efficiency as an inverter is inferior to that of the device shown in FIG.

本発明は、このような従来装置の問題点を解決するため
になされたもので、変換効率を高くでき、かつ、スイッ
チング装置に加わる電圧を低減できるインバータ装置を
提供することを目的とするものである。
The present invention has been made in order to solve the problems of conventional devices, and aims to provide an inverter device that can increase conversion efficiency and reduce the voltage applied to the switching device. be.

[発明の構倉] (問題点を解決するための手段) 本発明は、直流電源の出力を2分割する電圧回路の再出
力端子間に交互にオン・オフする一対のスイッチング装
置を直列に設けるとともに、これらスイッチング装置の
接続点と前記分圧回路の分圧点との間に並列共振回路を
備えた出力回路を設け、かつ、前記各スイッチング装置
それぞれの通流回路に介され互いに磁器結合したインダ
クタを備えたことを特徴とするものである。
[Structure of the invention] (Means for solving the problem) The present invention provides a pair of switching devices in series that alternately turn on and off between the re-output terminals of a voltage circuit that divides the output of a DC power supply into two. In addition, an output circuit including a parallel resonant circuit is provided between the connection point of these switching devices and the voltage dividing point of the voltage dividing circuit, and the switching devices are magnetically coupled to each other through the respective current circuits of the switching devices. It is characterized by being equipped with an inductor.

(作用) 本発明は、一対のスイッチング装置のオン・オフにより
、スイッチングが出力回路に供給される。
(Operation) In the present invention, switching is supplied to the output circuit by turning on and off a pair of switching devices.

したがって、出力回路の並列共振が共振して略正弦波の
共振出力を発生する。一対のインダクタは、従来の定電
流形プッシュプルインバータにおけるインダクタと同様
に定電流作用を行なうが、互いに磁器結合していること
により、一対のスイッチング装置のオンパオフが反転し
ようとするときにもその定電流作用を維持できる。また
、各スイッチング装置に加わる電圧は直流電源の出力を
2分割した電圧に基づく共振電圧であるため、従来の定
電流形プッシュプルインパンクの1/2となる。
Therefore, the parallel resonance of the output circuit resonates to generate a substantially sinusoidal resonant output. The pair of inductors performs a constant current action similar to the inductor in a conventional constant current type push-pull inverter, but because they are magnetically coupled to each other, they maintain constant current even when the on/off state of the pair of switching devices is about to reverse. Current action can be maintained. Furthermore, since the voltage applied to each switching device is a resonant voltage based on the voltage obtained by dividing the output of the DC power supply into two, it is 1/2 that of a conventional constant current type push-pull-in-puncture.

さらに、並列共振回路の共振出力と同相でスイッチング
できるから、スイッチング損失は小さい。
Furthermore, since switching can be performed in phase with the resonant output of the parallel resonant circuit, switching loss is small.

(実地例) 以下、本発明の一実施例を第1図を参照して説明する。(Practical example) An embodiment of the present invention will be described below with reference to FIG.

20は分圧回路で、たとえば直流電源21とこの電源2
1と並列接続されたコンデンサ22.23の直列回路と
からなる。24.25はたとえばトランジスタであるス
イッチング装置で、互いに直列接続され、交互にオン・
オフするものである。これらスイッチ装置24.25の
駆動回路および始動回路は図示を省略したが、周知のも
のを用いてもよく、また、当業者においては適宜、構成
し得るものである。26は出力回路で、並列共振回路2
7を備えている。また、本実例では、たとえば放電灯お
よびこの放電灯の限流インピーダンス等である負荷28
を並列共振回路27と並列に設けている。そして、この
出力回路26は、前記スイッチング装置24.25の接
続点と、分圧回路20における分圧点すなわちコンデン
サ22.23の接続点との間に設けられている。29゜
30はインダクタで、それぞれ前記各スイッチング装置
24.25の通流回路に介挿されているとともに、互い
に磁気的に結合している。
20 is a voltage dividing circuit, for example, a DC power supply 21 and this power supply 2.
1 and a series circuit of capacitors 22 and 23 connected in parallel. 24 and 25 are switching devices such as transistors, which are connected in series and turned on and off alternately.
It's something to turn off. The drive circuit and starting circuit for these switch devices 24, 25 are not shown, but well-known circuits may be used, and those skilled in the art can construct them as appropriate. 26 is an output circuit, parallel resonant circuit 2
It has 7. In addition, in this example, a load 28, which is, for example, a discharge lamp and a current limiting impedance of this discharge lamp, is used.
is provided in parallel with the parallel resonant circuit 27. The output circuit 26 is provided between the connection point of the switching device 24.25 and the voltage division point in the voltage dividing circuit 20, that is, the connection point of the capacitor 22.23. Inductors 29 and 30 are inserted into the current flow circuits of the switching devices 24 and 25, respectively, and are magnetically coupled to each other.

つぎに、本実施例の作用を述べる。たとえばスイッチン
グ装置24がオンしていると、コンデンサ22−インダ
クタ2つ一スイッチング装置24−並列共振回路27−
コンデンサ22の閉回路が構成され、並列共振回路27
は共振出力を発生する。つぎに、スイッチング装置がオ
フ、スイッチング装置25がオンするときは、コンデン
サ23−並列共振回路27−スイッチング装置25−イ
ンダクタ30−コンデンサ23の閉回路が相成さ1  
 。
Next, the operation of this embodiment will be described. For example, when the switching device 24 is on, the capacitor 22 - two inductors - the switching device 24 - the parallel resonant circuit 27 -
A closed circuit of the capacitor 22 is configured, and a parallel resonant circuit 27
generates a resonant output. Next, when the switching device is turned off and the switching device 25 is turned on, the closed circuit of the capacitor 23, the parallel resonant circuit 27, the switching device 25, the inductor 30, and the capacitor 23 is connected to each other.
.

ち、かつ、インダクタ30にはエネルギが蓄積されてい
るから、インダクタ29.30による定電流作用はスイ
ッチングに係わらず連続したものとなり、並列共振回路
27は前記と同様に共振出力を発生する。なお、分圧回
路20におけるコンデンサ22.23の容量は所望のも
のに選択可能であり、これにより、分圧点のリップルを
任意のものにすることができる。
In addition, since energy is stored in the inductor 30, the constant current action by the inductors 29 and 30 is continuous regardless of switching, and the parallel resonant circuit 27 generates a resonant output in the same manner as described above. Note that the capacitances of the capacitors 22 and 23 in the voltage dividing circuit 20 can be selected as desired, so that the ripple at the voltage dividing point can be made arbitrary.

第2図は本発明の他の実施例を示すものである。FIG. 2 shows another embodiment of the invention.

なお、第1図と同じ部分には同じ符号を付し、説明を省
略する4本実施例において、分圧回路40は直流電源4
1.42を直列接続したものである。
In the four embodiments, the same parts as in FIG.
1.42 connected in series.

また、各スイッチング装置24.25の駆動回路の一例
として、並列共振回路27のインダクタに゛巻線43.
44を設け、これら巻線43.44の出力を各スイッチ
ング装置24.2’5に正帰還するものを示した。
Further, as an example of a drive circuit for each switching device 24, 25, a winding 43.
44 is provided, and the outputs of these windings 43, 44 are positively fed back to each switching device 24, 2'5.

なお、本発明は上記実施例の他、各種の変形を可とする
ものである。たとえば、スイッチング装置は、たとえば
、MOSFET、SCR等であってもよい、また、並列
共振回路もトランスを用いて構成するようにしてもよい
It should be noted that the present invention allows various modifications in addition to the above embodiments. For example, the switching device may be a MOSFET, SCR, etc., and the parallel resonant circuit may also be configured using a transformer.

[発明の効果] 以上述べたように本発明は、分圧回路の両端子間に一対
のスイッチング装置を直列に設け、これらスイッチング
装置の接続点と分圧回路の分圧点との間に並列共振回路
を備えた出力回路を設け、かつ、前記各スイッチング装
置の通流回路それぞれに介挿し磁気的に結合した一対の
インダクタを設けたから、いわゆる定電流プッシュプル
インバータと同様な作用を行なわせながら、各スイッチ
ング装置に加わる電圧を従来の定電流形プッシュプルイ
ンバータの172にできる。したがって、高い変換効率
を得ながら、耐圧の低いスイッチング装置を用いること
ができ、安価なインバータ装置を提供できる。
[Effects of the Invention] As described above, the present invention provides a pair of switching devices in series between both terminals of a voltage dividing circuit, and connects a pair of switching devices in parallel between the connection point of these switching devices and the voltage dividing point of the voltage dividing circuit. Since an output circuit equipped with a resonant circuit is provided, and a pair of inductors are inserted and magnetically coupled to each of the current-flow circuits of each of the switching devices, it is possible to perform an operation similar to that of a so-called constant current push-pull inverter. , the voltage applied to each switching device can be 172 of a conventional constant current type push-pull inverter. Therefore, a switching device with low breakdown voltage can be used while obtaining high conversion efficiency, and an inexpensive inverter device can be provided.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図および第2図は本発明のそれぞれ異なる実施例を
示す回路図、第3図および第4図はそれぞれ異なる従来
装置を示す回路図である。 20.30・・・分圧回路。 24.25・・・スイッチング装置。 26・・・出力回路、  27・・・並列共振回路。 29.30・・・インダクタ。
FIGS. 1 and 2 are circuit diagrams showing different embodiments of the present invention, and FIGS. 3 and 4 are circuit diagrams showing different conventional devices. 20.30...Voltage dividing circuit. 24.25...Switching device. 26... Output circuit, 27... Parallel resonant circuit. 29.30...Inductor.

Claims (1)

【特許請求の範囲】[Claims] (1)直流電源の出力を2分割する分圧回路と;この分
圧回路の両端子間に互いに直列的に設けられ交互にオン
・オフする一対のスイッチング装置と; 並列共振回路を備え上記一対のスイッチング装置の接続
点および上記分圧回路の分圧点の間に設けられた出力回
路と; 上記各スイッチング装置それぞれの通流回路に介挿され
たかつ互いに磁器結合した一対のインダクタと; を具備したことを特徴とするインバータ装置。
(1) A voltage divider circuit that divides the output of a DC power source into two; a pair of switching devices that are provided in series between both terminals of this voltage divider circuit and turn on and off alternately; and the pair of switching devices that have a parallel resonant circuit. an output circuit provided between the connection point of the switching device and the voltage dividing point of the voltage dividing circuit; a pair of inductors inserted in the current flow circuits of each of the switching devices and magnetically coupled to each other; An inverter device characterized by comprising:
JP62246260A 1987-09-30 1987-09-30 Inverter device Pending JPH0191672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62246260A JPH0191672A (en) 1987-09-30 1987-09-30 Inverter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62246260A JPH0191672A (en) 1987-09-30 1987-09-30 Inverter device

Publications (1)

Publication Number Publication Date
JPH0191672A true JPH0191672A (en) 1989-04-11

Family

ID=17145876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62246260A Pending JPH0191672A (en) 1987-09-30 1987-09-30 Inverter device

Country Status (1)

Country Link
JP (1) JPH0191672A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928061A1 (en) * 1997-04-22 1999-07-07 Nippon Electric Co. Ltd. Neutral-point inverter
WO2003098789A1 (en) * 2002-05-16 2003-11-27 Intreprinderea Mixta Moldo-Rusa 'elcon' S.R.L. A regulated resonant voltage converter and a method of regulated resonance dc-dc voltage conversion
JP2008174183A (en) * 2007-01-22 2008-07-31 Matsushita Electric Works Ltd Footstool-integrated luminescence panel
MD20070283A (en) * 2007-10-16 2009-07-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Process for charging current formation for a capacitive energy storage system
MD3853C2 (en) * 2007-05-10 2009-12-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Resonance voltage transducer
MD3850C2 (en) * 2007-04-12 2009-12-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Quasi-resonant direct-current voltage transducer
MD3851C2 (en) * 2007-07-25 2009-12-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Quasi-resonant voltage transducer
MD215Z (en) * 2007-10-16 2010-12-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Capacitive storage charger
MD4073C1 (en) * 2008-11-06 2011-05-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Stabilized high-voltage converter

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928061A1 (en) * 1997-04-22 1999-07-07 Nippon Electric Co. Ltd. Neutral-point inverter
EP0928061A4 (en) * 1997-04-22 2004-05-12 Nippon Electric Co Neutral-point inverter
WO2003098789A1 (en) * 2002-05-16 2003-11-27 Intreprinderea Mixta Moldo-Rusa 'elcon' S.R.L. A regulated resonant voltage converter and a method of regulated resonance dc-dc voltage conversion
EA008526B1 (en) * 2002-05-16 2007-06-29 СОВМЕСТНОЕ МОЛДО-РОССИЙСКОЕ ПРЕДПРИЯТИЕ "ЭЛКОН", С.р.л. A regulated resonant voltage converter and a method of regulated resonancedc-dc voltage conversion
JP2008174183A (en) * 2007-01-22 2008-07-31 Matsushita Electric Works Ltd Footstool-integrated luminescence panel
MD3850C2 (en) * 2007-04-12 2009-12-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Quasi-resonant direct-current voltage transducer
MD3853C2 (en) * 2007-05-10 2009-12-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Resonance voltage transducer
MD3851C2 (en) * 2007-07-25 2009-12-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Quasi-resonant voltage transducer
MD20070283A (en) * 2007-10-16 2009-07-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Process for charging current formation for a capacitive energy storage system
MD215Z (en) * 2007-10-16 2010-12-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Capacitive storage charger
MD4073C1 (en) * 2008-11-06 2011-05-31 Институт Электронной Инженерии И Промышленных Технологий Академии Наук Молдовы Stabilized high-voltage converter

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