JPS5941176A - Inverter device - Google Patents

Inverter device

Info

Publication number
JPS5941176A
JPS5941176A JP15320782A JP15320782A JPS5941176A JP S5941176 A JPS5941176 A JP S5941176A JP 15320782 A JP15320782 A JP 15320782A JP 15320782 A JP15320782 A JP 15320782A JP S5941176 A JPS5941176 A JP S5941176A
Authority
JP
Japan
Prior art keywords
load
inverter device
inverter
output
loads
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
JP15320782A
Other languages
Japanese (ja)
Inventor
Yoshiyasu Sakaguchi
阪口 善保
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP15320782A priority Critical patent/JPS5941176A/en
Publication of JPS5941176A publication Critical patent/JPS5941176A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

PURPOSE:To control the output frequency of an inverter device substantially constantly by controlling the reactive current in response to variations in a load. CONSTITUTION:An impedance element 11 which is connected in parallel with both output terminals of an inverter device 9 which outputs through a transformer 4 the output of an inverter having an electric vibration system as the input of a DC power source voltage 10 is connected to a circuit 13 which includes a switch element 12 for controlling the current flowed to the element 11. Loads 8a, 8b, 8c,... are inductive. The inverter device 9 is electrically coupled by the loads 8a, 8b, 8c,... and the transformer 4. The load 8a is disconnected from the circuit, and when the load of the inverter circuit 9 becomes the loads 8b, 8c,... the output frequency of the device 9 decreases, with the result that the inductive loads 8b, 8c tend to become the rated value or higher in the power consumption, but the switch element 12 is closed simultaneously when the load 8a is disconnected, thereby preventing it.

Description

【発明の詳細な説明】 (技術分野) 本発明は、リアクタンス要素を含む負荷に、交流電力を
供給するインバータ装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an inverter device that supplies alternating current power to a load including a reactance element.

(背景技術) 直流より交流に変換する電気振動系を有するインバータ
の出力を、変圧トランスを介して負荷に交流電力を供給
するインバータ装置として、第1図に示す如きプッシュ
プル定電流インバータがある。図中1 tri商用電源
、2は整流器、8は定電流リアクトル、4は変圧トラン
スで、1対の1−ヲンジスタ6.6の交互のオン・オフ
により、1ンデン−!+ 7 ト変圧)ランス4の1次
側インダクタンスで振動する振動電圧を、変圧トランス
4の2次巻線へ変圧するもので、この変圧トランス4の
2次亜′圧で負荷8に交流電力を供給する。
(Background Art) A push-pull constant current inverter as shown in FIG. 1 is an inverter device that supplies alternating current power to a load via a transformer by converting the output of an inverter having an electric vibration system that converts direct current into alternating current. In the figure, 1 is a commercial power supply, 2 is a rectifier, 8 is a constant current reactor, and 4 is a transformer. The oscillating voltage that oscillates in the primary inductance of the lance 4 is transformed to the secondary winding of the transformer 4, and the secondary sub-voltage of the transformer 4 supplies AC power to the load 8. supply

このような振動系を有するインバータの出力を変圧トラ
ンス4を介して負荷8へ交流電力を供給するインバータ
装置9にあっては、負荷8のインピーダンスが変化する
とインバータ装置9の振動周期が変化する特性を有して
いる。
The inverter device 9 that supplies AC power from the output of the inverter having such a vibration system to the load 8 via the transformer 4 has a characteristic that the vibration period of the inverter device 9 changes when the impedance of the load 8 changes. have.

今、負荷8がリアクタンス要素を含むもので、消費電力
が略等しい複数の負荷3a 、 8b 、 8c 、・
・・が並列に接続された第2図に示す如き構成のものに
おいC0−1,例えば負荷8aが接続されていない時は
、すべての負荷8a 、 8b 、 3c 、・・・が
接続されている時と比較して、インバータ装置9の出力
周波数が異なり、従って、池の負荷Bb 、 8c 、
・・・の消費電力が、負荷8aの有無により異なる こ
とになり、負荷8に適切な電力を供給できない。そのた
め、 (1)負荷8の電力消費過郁j、過少で負荷8の信頼性
が低下する。
Now, the load 8 includes a reactance element, and a plurality of loads 3a, 8b, 8c, .
... are connected in parallel, as shown in Fig. 2, when C0-1, for example, load 8a, is not connected, all loads 8a, 8b, 3c, ... are connected. Compared to the time, the output frequency of the inverter device 9 is different, and therefore the pond load Bb, 8c,
The power consumption of ... will differ depending on the presence or absence of the load 8a, and appropriate power cannot be supplied to the load 8. Therefore, (1) If the power consumption of the load 8 is too high or too low, the reliability of the load 8 will decrease.

(2)  インバータ装置9の振動周波数帯が広がりノ
イズ対策が困難になる。
(2) The vibration frequency band of the inverter device 9 expands, making it difficult to take measures against noise.

という欠点があった。There was a drawback.

(本発明の目的) 本発明は上記欠点を除去するだめになされたもので、そ
の目的とするところは、負荷の変動に伴う出力電圧周波
数の変動巾?低減し、負荷への供給電力を適正に保つこ
とができるインバータ装置を提供するにある。
(Objective of the present invention) The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to reduce the range of variation in output voltage frequency due to load variation. An object of the present invention is to provide an inverter device that can reduce power consumption and maintain appropriate power supply to a load.

(本発明の開示) 第8図は本発明の基本構成を示す回路図で、IK流流電
型電圧10入力として、電気的振動系を有するインバー
タの出力を変圧トランス4を介して出力するインバータ
装置9の出力両端に並列的にイビーダンス要素11と、
該インピーダンス要素11を流れる電流を制御するスイ
ッチ要素+2を含む回路Bを接続する。
(Disclosure of the Present Invention) FIG. 8 is a circuit diagram showing the basic configuration of the present invention, in which an inverter outputs the output of an inverter having an electrical vibration system via a transformer 4 as 10 IK current voltage inputs. IbDance elements 11 in parallel across the output of the device 9;
A circuit B including a switch element +2 controlling the current flowing through the impedance element 11 is connected.

次に、上記基本構成回路の動作原理を説明する。Next, the operating principle of the basic configuration circuit described above will be explained.

今、負荷3a 、 9b 、 3c 、・・・は誘導性
負荷とする。インバータ装置9#i、負荷3a 、 8
b、8C*・・・と変圧トランス4で電気的に結合され
てし)る。
Now, assume that the loads 3a, 9b, 3c, . . . are inductive loads. Inverter device 9#i, load 3a, 8
b, 8C*... are electrically coupled by the transformer 4).

従って、電気的振動系を有するインバータ装置9の出力
電圧の周波数は、インバータ装置9内の振動系定数及び
負荷sa 、 8b 、 8c 、・・・の並列イ ン
ピーダンスである負荷インピーダンスで決まる【Oとな
る。従って、この周波数fOでは負荷Ba、8b、8C
1・・・には定格の電力が消費されている。
Therefore, the frequency of the output voltage of the inverter device 9 having an electrical vibration system is determined by the vibration system constant in the inverter device 9 and the load impedance which is the parallel impedance of the loads sa, 8b, 8c, . Become. Therefore, at this frequency fO, loads Ba, 8b, 8C
1... is consuming the rated power.

一方、今、負荷81が回路から切り離され インバータ
装置9の負荷が8b、8C1・・・となると、インバー
タ装置9の出力周波数が区下するため、誘導性負荷であ
るBb 、 8c m・・・は電力消費が定格以上にな
ろうとするが、前記負荷8aが切り離されると同時にス
イッチ要素12を投入して、インピーダンス要素11に
負荷83に流れる電流と略等 しい電流を流すことによ
りインバータ装置9の出力周波数は略一定に制御され、
負荷8b 、 3c 、・・・&lま略定格の電力が消
費されることになる。而して。
On the other hand, if the load 81 is now disconnected from the circuit and the loads on the inverter device 9 become 8b, 8C1..., the output frequency of the inverter device 9 will be divided, so the inductive loads Bb, 8c m... However, at the same time as the load 8a is disconnected, the switch element 12 is turned on and a current approximately equal to the current flowing through the load 83 is caused to flow through the impedance element 11, thereby reducing the power consumption of the inverter device 9. The output frequency is controlled almost constant,
Approximately the rated power will be consumed by the loads 8b, 3c, . . . &l. Then.

インピーダンス要i11はリアクタンス要素で構成され
ているものとすると、この回路【3での電力消費fi極
僅かである。
Assuming that the impedance i11 is composed of a reactance element, the power consumption fi in this circuit [3 is extremely small.

このように、負荷変動に応じて無効電流を制御すること
によりインバータ装置の出力周波数を略一定に制御でき
、前記従来例の欠、ぐ、を除去することができる。
In this way, by controlling the reactive current according to load fluctuations, the output frequency of the inverter device can be controlled to be substantially constant, and the deficiencies of the conventional example can be eliminated.

なお、本発明に係るインピーダンス要素11及びスイッ
チ要素Uは複数あっても同等の効果を有し。
Note that even if there are a plurality of impedance elements 11 and switch elements U according to the present invention, the same effect can be obtained.

複数ある方がより広い負荷変動に対応できるものである
ことは容易に理解されるであろう。第4図はその実施例
を示す回路図で、各負荷3a 、 Bb 。
It will be easily understood that having more than one allows for a wider range of load fluctuations. FIG. 4 is a circuit diagram showing this embodiment, in which each load 3a, Bb.

Bc 、・・・に流れる電流に略等しい無効電流を流す
ためのインピーダンス要素11とスイッチ要素12を各
負待8a 、 8b 、 8C、・・・毎に設け、例え
ば、負荷8aが切り離されるとスイッチ要素121が 
投入されるようにする。このようにすれば、インバータ
装置9の出力周波数は常に定格出力時の周波数と略同−
に制御することができる。
An impedance element 11 and a switch element 12 for flowing a reactive current approximately equal to the current flowing through Bc, . element 121
so that it can be used. In this way, the output frequency of the inverter device 9 is always approximately the same as the frequency at the rated output.
can be controlled.

(本発明の効果) 本発明は、上記のように、直流電圧を人力し電気的振動
系を有するインバータの交流出力を負荷に供給するイン
バータ装置において、該装置の出力端に接続された負荷
のイン〈−ダンス変動に応じてインバータ出力よりの無
効電力を制aL得るインピーダンス要素とスイッチ要素
より成る無効電力制御回路をインバータ装置の出力端に
並列接続することによりインバータ装置の出力周波数を
負荷インピーダンスに関係なく一定に制御し得ることか
ら、次の効果を得ることができる。
(Effects of the Present Invention) As described above, the present invention provides an inverter device that manually supplies a direct current voltage to a load and supplies the alternating current output of an inverter having an electrical vibration system to the load. By connecting a reactive power control circuit consisting of an impedance element and a switch element in parallel to the output end of the inverter device, which controls the reactive power from the inverter output according to the impedance fluctuation, the output frequency of the inverter device can be adjusted to the load impedance. The following effects can be obtained because the control can be kept constant regardless of the situation.

11)  負荷での消費電力を、同一インバータr接続
された他の負荷の状態に影響されることなく、常に一定
に保つことができる。その結果。
11) Power consumption in the load can always be kept constant without being affected by the status of other loads connected to the same inverter. the result.

各負荷での性能をフルに発揮させることが可能となる。It is possible to fully demonstrate the performance under each load.

(2)負荷での電力消費量が過剰、M少とならず負荷の
信頼性を確保できる。
(2) The reliability of the load can be ensured without excessive power consumption or M being reduced.

(8)  インバータ装置の出力周波数が一定に制御さ
れるため、発生ノイズが少なく、ノイズ防止に対する対
策が不要となり、]ス1−のし減が図れ小型なインバー
タ装置を提供できる。
(8) Since the output frequency of the inverter device is controlled to be constant, less noise is generated, no measures for noise prevention are required, and a compact inverter device can be provided with a reduction in space consumption.

以上のように1本発明Iri負荷変+ljを許容する中
容列−以上の交流寅力制御のためのインバータ装置にお
いて1周波数を一定に制御し得る全く新規なインバータ
装置の提供を可能にしたものである。
As described above, the present invention has made it possible to provide a completely new inverter device capable of controlling one frequency at a constant level in an inverter device for controlling AC power over a content sequence that allows Iri load variation + lj. It is.

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

第1図及び第2図はそれぞれ従来例の回路図、第8図は
本発明の一実施例を示す回路図、第4図は本発明の異な
る実施例を示す回路図である。 特許出願人 松「電工株式会社 代理人弁理士  竹 元 敏 九 (ほか2名) 第1図 第2図 第3図 第4 図
1 and 2 are circuit diagrams of a conventional example, FIG. 8 is a circuit diagram showing one embodiment of the present invention, and FIG. 4 is a circuit diagram showing a different embodiment of the present invention. Patent applicant: Matsu Denko Co., Ltd. Patent attorney Satoshi Takemoto (and 2 others) Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] (1)直流電圧を入力し電気的振動系を有するインバー
タの交流出力を負荷に供給するインバータ装置において
、該装置の出力端に接続された負荷のインピーダンス変
動に応じてインバータ出力よりの無効電力を制御し得る
インピーダンス要素とスイッチ要素より成る無効電力制
御回路をインバータ装置の出力端に並列接続することに
より、出力周波数を一定に制御したことを特徴とするイ
ンバータ装置。
(1) In an inverter device that inputs a DC voltage and supplies the AC output of an inverter with an electrical oscillation system to a load, reactive power from the inverter output is generated according to impedance fluctuations of the load connected to the output terminal of the device. An inverter device characterized in that an output frequency is controlled to be constant by connecting a reactive power control circuit comprising a controllable impedance element and a switch element in parallel to an output end of the inverter device.
JP15320782A 1982-08-31 1982-08-31 Inverter device Pending JPS5941176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15320782A JPS5941176A (en) 1982-08-31 1982-08-31 Inverter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15320782A JPS5941176A (en) 1982-08-31 1982-08-31 Inverter device

Publications (1)

Publication Number Publication Date
JPS5941176A true JPS5941176A (en) 1984-03-07

Family

ID=15557382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15320782A Pending JPS5941176A (en) 1982-08-31 1982-08-31 Inverter device

Country Status (1)

Country Link
JP (1) JPS5941176A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925967A (en) * 1972-06-27 1974-03-07
JPS51136133A (en) * 1975-05-21 1976-11-25 Fuji Electric Co Ltd High frequency inverter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925967A (en) * 1972-06-27 1974-03-07
JPS51136133A (en) * 1975-05-21 1976-11-25 Fuji Electric Co Ltd High frequency inverter

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