JPH0595667A - Waveform shaping circuit of inverter transformer for single-phase three-wire output - Google Patents
Waveform shaping circuit of inverter transformer for single-phase three-wire outputInfo
- Publication number
- JPH0595667A JPH0595667A JP3280709A JP28070991A JPH0595667A JP H0595667 A JPH0595667 A JP H0595667A JP 3280709 A JP3280709 A JP 3280709A JP 28070991 A JP28070991 A JP 28070991A JP H0595667 A JPH0595667 A JP H0595667A
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- phase
- circuit
- waveform shaping
- wire output
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、無停電電源装置を構
成する単相３線出力用インバータ・トランスの波形歪み
を改善させるための波形整形回路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform shaping circuit for improving waveform distortion of a single-phase three-wire output inverter / transformer which constitutes an uninterruptible power supply.
【０００２】[0002]
【従来の技術】無停電電源装置から単相３線出力を供給
する場合には図２に示すようにＰＷＭインバータ１１の
出力側に単相３線出力用トランス１３を接続していた。
前記単相３線出力用トランスは１つの２００Ｖ出力回路
と２つの１００Ｖ出力回路を備えているので、回路電流
のアンバランスまたは整流器負荷や線形負荷のような負
荷特性の相違によって波形歪みが発生し易すかった。こ
の歪みを低減させるために、ＰＷＭインバータ１１と単
相３線出力用トランス１３との間に容量の大きいＬＣフ
ィルタ１２を挿入していた。2. Description of the Related Art When supplying a single-phase three-wire output from an uninterruptible power supply, a single-phase three-wire output transformer 13 is connected to the output side of a PWM inverter 11 as shown in FIG.
Since the single-phase three-wire output transformer has one 200V output circuit and two 100V output circuits, waveform distortion occurs due to unbalance of circuit current or difference in load characteristics such as rectifier load and linear load. It was easy. In order to reduce this distortion, the LC filter 12 having a large capacitance is inserted between the PWM inverter 11 and the single-phase three-wire output transformer 13.
【０００３】[0003]
【発明が解決しようとする課題】上述したように、従来
技術による単相３線出力用インバータ・トランスの波形
整形回路においては波形歪みを低減させるために大容量
のＬＣフィルタ１２を設置していたが、単相３線出力用
トランスの１次側にあるので２次側波形の整形について
は効果が少なかった。この発明は、上述した従来技術の
欠点を除去するためになされたものであって、波形歪み
を改善させると共にフィルタ容量を低減できる波形整形
回路を提供しようとするものである。As described above, in the waveform shaping circuit of the inverter / transformer for single-phase three-wire output according to the prior art, the large capacity LC filter 12 is installed in order to reduce the waveform distortion. However, since it is located on the primary side of the single-phase three-wire output transformer, it has little effect on shaping of the secondary side waveform. The present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art, and an object thereof is to provide a waveform shaping circuit capable of improving waveform distortion and reducing filter capacitance.
【０００４】[0004]
【課題を解決するための手段】上述した目的を達成する
ために、この発明に係る単相３線出力用インバータ・ト
ランスの波形整形回路は、無停電電源装置を構成するＰ
ＷＭインバータの出力側にリーケージインダクタンスを
もった単相３線出力用の対稱交差巻トランスを接続し、
さらに、前記トランスの２次出力回路における中性線を
含まない２線間にフィルタ・コンデンサを接続して前記
トランスのリーケージインダクタンスとフィルタ・コン
デンサとの共振によりフィルタ回路を構成したものであ
る。In order to achieve the above-mentioned object, a waveform shaping circuit of an inverter / transformer for single-phase three-wire output according to the present invention is a P that constitutes an uninterruptible power supply.
Connect a single-phase three-wire output anti-cross winding transformer with leakage inductance to the output side of the WM inverter,
Further, a filter capacitor is connected between two wires in the secondary output circuit of the transformer that do not include a neutral wire, and a filter circuit is configured by resonance of the leakage inductance of the transformer and the filter capacitor.
【０００５】[0005]
【作用】対稱交差巻トランスを用いているので負荷のア
ンバランスに対応でき、また、エア・ギャップをもった
リーケージインダクタンスの大きいトランスとこのトラ
ンスの２次出力回路に設けたコンデンサの共振によりフ
ィルタ回路を構成しているので効率よく電圧波形の歪み
を改善できる。Since the anti-cross-winding transformer is used, it is possible to cope with the load imbalance, and the filter is provided by the resonance of the transformer having a large leakage inductance with an air gap and the capacitor provided in the secondary output circuit of this transformer. Since the circuit is configured, the distortion of the voltage waveform can be efficiently improved.
【０００６】[0006]
【実施例】以下、この発明による実施例を図面を参照し
ながら説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００７】図１はこの発明による単相３線出力用イン
バータ・トランスの波形整形回路の構成を示すブロック
回路図である。図１においてＰＷＭインバータ１の出力
側にはリーケージインダクタンスの大きい単相３線出力
用の対稱交差巻トランス２が接続されており、前記トラ
ンス２の２次出力回路における中性線を含まない２線間
にはフィルタ・コンデンサ３が挿入されている。FIG. 1 is a block circuit diagram showing the configuration of a waveform shaping circuit of an inverter transformer for single-phase three-wire output according to the present invention. In FIG. 1, the output side of the PWM inverter 1 is connected to a single-phase three-wire output anti-cross winding transformer 2 having a large leakage inductance, and does not include a neutral wire in the secondary output circuit of the transformer 2. A filter capacitor 3 is inserted between the lines.
【０００８】前記トランス２は負荷のアンバランスに対
応させるため対稱交差巻トランスとしてあり、また、整
流器負荷や線形負荷等の負荷特性の相違に起因する波形
歪みを改善するために前記トランス２にはエアギャップ
を設けてリーケージインダクタンスをもたせ、前記フィ
ルタコンデンサ３との共振によりフィルタ回路を構成し
たものである。即ち、従来技術の場合におけるトランス
の１次入力側に設けられているフィルタが、この発明に
おいてはトランスの２次出力側に形成された高周波フィ
ルタとなっているので、効率よく波形歪みを改善でき、
また、トランス２とコンデンサ３の組合せによる小形化
した波形整形回路を実現できる。The transformer 2 is an anti-cross winding transformer for dealing with load imbalance, and the transformer 2 is provided for improving waveform distortion due to difference in load characteristics such as rectifier load and linear load. Is a filter circuit configured by resonance with the filter capacitor 3 by providing an air gap to have leakage inductance. That is, since the filter provided on the primary input side of the transformer in the case of the conventional technique is the high frequency filter formed on the secondary output side of the transformer in the present invention, the waveform distortion can be efficiently improved. ,
Also, a compact waveform shaping circuit can be realized by combining the transformer 2 and the capacitor 3.
【０００９】[0009]
【発明の効果】以上説明したように、この発明による単
相３線出力用インバータ・トランスの波形整形回路は、
無停電電源装置を構成するＰＷＭインバータの出力側に
リーケージインダクタンスをもった単相３線出力用の対
稱交差巻トランスを接続し、さらに、このトランスの２
次出力側にフィルタ・コンデンサを接続して前記トラン
スのリーケージインダクタンスとフィルタ・コンデンサ
との共振によりフィルタ回路を構成した。従って、前記
トランスの２次出力側にフィルタ回路があるので、負荷
のアンバランスと多様な負荷に対して波形歪みを改善で
きる利点があり、また、波形整形用フィルタ容量を小さ
くする効果もある。As described above, the waveform shaping circuit of the inverter transformer for single-phase three-wire output according to the present invention is
Connected to the output side of the PWM inverter that constitutes the uninterruptible power supply, is a single-phase three-wire output anti-cross winding transformer with leakage inductance.
A filter capacitor was connected to the next output side to construct a filter circuit by resonance of the leakage inductance of the transformer and the filter capacitor. Therefore, since there is a filter circuit on the secondary output side of the transformer, there is an advantage that waveform distortion can be improved with respect to load imbalance and various loads, and there is also an effect of reducing the waveform shaping filter capacity.
【図１】この発明による単相３線出力用インバータ・ト
ランスの波形整形回路の構成を示すブロック回路図。FIG. 1 is a block circuit diagram showing a configuration of a waveform shaping circuit of an inverter transformer for single-phase three-wire output according to the present invention.
【図２】従来技術における波形整形回路の構成を示すブ
ロック回路図。FIG. 2 is a block circuit diagram showing a configuration of a waveform shaping circuit according to a conventional technique.
１ ＰＷＭインバータ ２ トランス ３ フィルタ・コンデンサ 1 PWM inverter 2 Transformer 3 Filter capacitor
Claims (1)
ータの出力側にリーケージインダクタンスをもった単相
３線出力用の対稱交差巻トランスを接続し、さらに、前
記トランスの２次出力回路における中性線を含まない２
線間にフィルタ・コンデンサを接続し、前記トランスの
リーケージインダクタンスと前記フィルタ・コンデンサ
との共振によりフィルタ回路を構成したことを特徴とす
る単相３線出力用インバータ・トランスの波形整形回
路。1. A single-phase three-wire output anti-cross winding transformer having a leakage inductance is connected to the output side of a PWM inverter constituting an uninterruptible power supply, and further, in a secondary output circuit of the transformer. 2 not including sex line
A waveform shaping circuit for an inverter transformer for single-phase three-wire output, wherein a filter capacitor is connected between the lines, and a resonance circuit of the transformer and resonance of the filter capacitor constitute a filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3280709A JPH0595667A (en) | 1991-10-01 | 1991-10-01 | Waveform shaping circuit of inverter transformer for single-phase three-wire output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3280709A JPH0595667A (en) | 1991-10-01 | 1991-10-01 | Waveform shaping circuit of inverter transformer for single-phase three-wire output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0595667A true JPH0595667A (en) | 1993-04-16 |
Family
ID=17628860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3280709A Pending JPH0595667A (en) | 1991-10-01 | 1991-10-01 | Waveform shaping circuit of inverter transformer for single-phase three-wire output |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0595667A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765346A (en) * | 2021-08-30 | 2021-12-07 | 河北科技大学 | Current source grid-connected inverter based on transformer filtering and double-carrier modulation method thereof |
-
1991
- 1991-10-01 JP JP3280709A patent/JPH0595667A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765346A (en) * | 2021-08-30 | 2021-12-07 | 河北科技大学 | Current source grid-connected inverter based on transformer filtering and double-carrier modulation method thereof |
| CN113765346B (en) * | 2021-08-30 | 2024-03-26 | 河北科技大学 | Current source grid-connected inverter based on transformer filtering and dual-carrier modulation method thereof |
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