JPH04190680A - Inverter power source circuit - Google Patents
Inverter power source circuitInfo
- Publication number
- JPH04190680A JPH04190680A JP2318622A JP31862290A JPH04190680A JP H04190680 A JPH04190680 A JP H04190680A JP 2318622 A JP2318622 A JP 2318622A JP 31862290 A JP31862290 A JP 31862290A JP H04190680 A JPH04190680 A JP H04190680A
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- Prior art keywords
- frequency
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- circuit
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- 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.)
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- 238000006243 chemical reaction Methods 0.000 claims description 45
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Inverter Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はインバータ電源回路に関し、特にＤＣ−ＡＣブ
ツシュ・プル・インバータ電源回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inverter power supply circuit, and more particularly to a DC-AC bush-pull inverter power supply circuit.
従来、スイッチング・レギュレータにおけるＤＣ−ＡＣ
ブツシュ・プル・インバータ電源回路として、第３図お
よび第４図に示すものがそれぞれ提案されている。第３
図に示すものは、直流電源ｌをＤＣ−ＤＣコンバータ２
で電圧変換、したものを、スイッチング素子３，４で断
続し、これを変換トランス５で電圧変換することでＡＣ
出力を得ている。この場合、スイッチング素子３．４は
固定デユーティで駆動させている。また、第４図に示す
ものは、帰還用ダイオード８と昇降圧用インダクタ９を
備えており、スイッチング素子３．４の駆動デユーティ
を制御することによりインバータ電源回路自体に出力安
定化の機能を持たせている。Conventionally, DC-AC in switching regulators
As bush-pull inverter power supply circuits, those shown in FIGS. 3 and 4 have been proposed. Third
What is shown in the figure is a DC power supply l connected to a DC-DC converter 2.
The voltage converted by the switching elements 3 and 4 is switched on and off, and then the voltage is converted by the conversion transformer 5.
I am getting output. In this case, the switching element 3.4 is driven with a fixed duty. Furthermore, the one shown in FIG. 4 is equipped with a feedback diode 8 and a buck-boost inductor 9, and by controlling the drive duty of the switching element 3.4, the inverter power supply circuit itself has an output stabilization function. ing.
なお、これらＤＣ−ＡＣインバータ回路には仮想線で示
すように、整流・平滑回路６が接続され、負荷回路７に
接続される。Note that a rectifier/smoothing circuit 6 is connected to these DC-AC inverter circuits, as shown by imaginary lines, and is connected to a load circuit 7.
このような従来のインバータ電源回路では、スイッチン
グ素子３，４を駆動する信号に矩形波を使用しているた
め、高効率化、小型化に伴ってスイッチング素子３．４
の駆動信号の高周波化を図ると、高調波の発生により変
換トランスでの損失が増加するという問題がある。また
、変換トランスの２次側に整流器を接続した場合に、そ
の整流器の逆回復特性により雑音を発生するという問題
がある。In such a conventional inverter power supply circuit, a rectangular wave is used as a signal to drive the switching elements 3 and 4.
When increasing the frequency of the drive signal, there is a problem in that the loss in the conversion transformer increases due to the generation of harmonics. Furthermore, when a rectifier is connected to the secondary side of the conversion transformer, there is a problem in that noise is generated due to the reverse recovery characteristics of the rectifier.
これらを改善するために、変換トランスの１次側インダ
クタンスと結合コンデンサ等による共振回路を挿入した
共振型インバータ回路が提案されているが、この共振回
路の定数の選定が容易ではないことと、共振特性を利用
した場合、デユーティ制御をかけることが困難であり回
路が複雑になるという問題が生じる。In order to improve these problems, a resonant inverter circuit has been proposed in which a resonant circuit is inserted using the primary inductance of the conversion transformer and a coupling capacitor, but it is not easy to select the constants of this resonant circuit, and the resonance When such characteristics are used, it is difficult to apply duty control and the circuit becomes complicated.
本発明の目的は、これらの問題を解消し、低損失、低雑
音のインバータ電源回路を提供することにある。An object of the present invention is to solve these problems and provide an inverter power supply circuit with low loss and low noise.
本発明のインバータ電源回路は、スイッチング素子を断
続させる駆動回路として、変換トランスの自己共振周波
数より低い第１の変換周波数信号を発生する手段と、こ
の自己共振周波数より高い第２の変換周波数信号を発生
する手段とを備えており、第１の変換周波数信号を第２
の変換周波数信号でパルス幅変調した信号で前記スイッ
チング素子を駆動するように構成する。The inverter power supply circuit of the present invention has means for generating a first conversion frequency signal lower than the self-resonance frequency of the conversion transformer, and a second conversion frequency signal higher than the self-resonance frequency of the conversion transformer, as a drive circuit for switching on and off the switching elements. and means for generating the first converted frequency signal to a second converted frequency signal.
The switching element is configured to be driven by a signal pulse width modulated with a conversion frequency signal.
この場合、第１の変換周波数信号は基準正弦波信号であ
り、第２の変換周波数信号は三角波信号である。In this case, the first converted frequency signal is a reference sine wave signal and the second converted frequency signal is a triangular wave signal.
本発明によれば、変換トランスの自己共振周波数より低
い第１の変換周波数信号を、自己共振周波数よりも高い
第２の変換周波数信号でパルス幅変調した信号でスイッ
チング素子を駆動することで、変換トランスの二次側に
は第１の変換周波数のみを発生させることができる。According to the present invention, the first conversion frequency signal lower than the self-resonance frequency of the conversion transformer is pulse-width modulated with the second conversion frequency signal higher than the self-resonance frequency to drive the switching element, thereby converting the conversion transformer. Only the first conversion frequency can be generated on the secondary side of the transformer.
次に、本発明を図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.
同図において、１は直流電源、３．４はスイッチング素
子、５は変換トランスであり、変換トランス５の一次側
において直流電源１をスイッチング素子３．４で断続し
て二次側に電圧を発生させる。In the figure, 1 is a DC power supply, 3.4 is a switching element, and 5 is a conversion transformer. On the primary side of the conversion transformer 5, the DC power supply 1 is switched on and off by the switching element 3.4 to generate a voltage on the secondary side. let
前記スイッチング素子３，４の制御回路として、第１の
変換周波数信号を発生する基準正弦波発生回路１０と、
−第２の変換周波数信号を発生する三角波同期信号発生
回路１１と、前記基準正弦波を半波毎に分割する半波分
割回路１２と、ＰＷＭコンパレータ１４，１５を備えて
分割された半波の正弦波を三角波でＰＷＭ変調するパル
ス幅変調回路１３と、前記基準正弦波の振幅を制御する
出力電圧検出回路１６とを備えている。a reference sine wave generation circuit 10 that generates a first conversion frequency signal as a control circuit for the switching elements 3 and 4;
- A triangular wave synchronization signal generation circuit 11 that generates a second conversion frequency signal, a half-wave division circuit 12 that divides the reference sine wave into half waves, and PWM comparators 14 and 15 to divide the divided half waves. It includes a pulse width modulation circuit 13 that performs PWM modulation of a sine wave with a triangular wave, and an output voltage detection circuit 16 that controls the amplitude of the reference sine wave.
ここで、第１の変換周波数信号は変換トランス５の自己
共振周波数より低くなるように設定され、第２の変換周
波数信号は変換トランス５の自己共振周波数より高くな
るように設定されている。Here, the first conversion frequency signal is set to be lower than the self-resonant frequency of the conversion transformer 5, and the second conversion frequency signal is set to be higher than the self-resonance frequency of the conversion transformer 5.
この構成によれば、第２図に一部の波形を示すように、
基準正弦波発生回路１０からの第１の変換周波数信号は
、半波分割回路１２により位相が１８０°ずれた２つの
半波信号１７に分割される。According to this configuration, as shown in part of the waveforms in FIG.
The first converted frequency signal from the reference sine wave generation circuit 10 is divided by the half-wave division circuit 12 into two half-wave signals 17 with a phase shift of 180°.
２つの半波信号１７は、それぞれパルス幅変調回路１３
内のＰＷＭコンパレータ１４，１５により、三角波同期
信号発生回路１１からの第２の変換周波数信号としての
三角波同期信号１８と比較され、パルス幅変調されたス
イッチング駆動信号１９となる。The two half-wave signals 17 are each sent to a pulse width modulation circuit 13.
The PWM comparators 14 and 15 within the triangular wave synchronizing signal generating circuit 11 compare the triangular wave synchronizing signal 18 as the second conversion frequency signal to produce a pulse width modulated switching drive signal 19.
そして、スイッチング素子３．４は、それぞれ位相が１
８０°ずれた２つの半波信号から発生する正弦波近似さ
れたスイッチング駆動信号１９により駆動される。この
スイッチング素子３．４が駆動されて直流電源１を断続
することで、変換トランス５の二次側に所要電圧の交流
信号が出力される。このとき、第１の変換周波数を変換
トランス５の自己共振周波数より低く、第２の変換周波
数を変換トランス５の自己共振周波数より高く設定して
いるため、変換トランス５では第２の変換周波数は伝送
されず、第１の変換周波数である正弦波のみが出力に発
生する。The switching elements 3.4 each have a phase of 1.
It is driven by a switching drive signal 19 approximated to a sine wave generated from two half-wave signals shifted by 80°. The switching element 3.4 is driven to connect and disconnect the DC power supply 1, thereby outputting an AC signal of a required voltage to the secondary side of the conversion transformer 5. At this time, since the first conversion frequency is set lower than the self-resonant frequency of the conversion transformer 5 and the second conversion frequency is set higher than the self-resonance frequency of the conversion transformer 5, the second conversion frequency in the conversion transformer 5 is No transmission occurs, only a sine wave at the first conversion frequency is generated at the output.
しかも、出力電圧検出回路１６からの信号により、基準
正弦波発生回路１０において、正弦波の振幅を制御して
いるため、出力電圧の振幅を制御でき、インバータ回路
のみで出力電圧の安定化を容品に図ることができる。Moreover, since the amplitude of the sine wave is controlled in the reference sine wave generation circuit 10 by the signal from the output voltage detection circuit 16, the amplitude of the output voltage can be controlled, and the output voltage can be stabilized using only the inverter circuit. It can be made into a product.
なお、出力電圧検出回路１６は、半波分割回路１２にお
いて発生された半波信号１７の基底部の直流分のレベル
を制御して出力電圧の安定化を図るようにしてもよい。Note that the output voltage detection circuit 16 may stabilize the output voltage by controlling the level of the base DC component of the half-wave signal 17 generated in the half-wave dividing circuit 12.
以上説明したように本発明は、変換トランスの自己共振
周波数より低い第１の変換周波数信号を、自己共振周波
数よりも高い第２の変換周波数信号でパルス幅変調した
信号でスイッチング素子を駆動するように構成している
ので、変換トランスの二次側には第１の変換周波数のみ
を発生させることができる。これにより、高調波成分の
発生を抑え、変換トランスでの損失を低減できる。また
、二次側に整流器を接続した際の雑音を低減することが
できる。また、基準正弦波の振幅を制御し、あるいは半
波信号の直流しづルを制御することで出力電圧の安定化
を図ること−もてきる。As explained above, the present invention drives a switching element with a signal obtained by pulse-width modulating a first conversion frequency signal lower than the self-resonance frequency of a conversion transformer with a second conversion frequency signal higher than the self-resonance frequency. Therefore, only the first conversion frequency can be generated on the secondary side of the conversion transformer. This suppresses the generation of harmonic components and reduces loss in the conversion transformer. Further, noise when a rectifier is connected to the secondary side can be reduced. It is also possible to stabilize the output voltage by controlling the amplitude of the reference sine wave or by controlling the DC slope of the half-wave signal.
第１図は本発明の一実施例のブロック回路図、第２図は
第１図の構成における主要部の波形図、第３図および第
４図はそれぞれ異なる従来のインバータ電源回路のブロ
ック回路図である。
１・・・直流電源、２・・・ＤＣ−ＤＣコンバータ、３
．４・・・スイッチング素子、５・・・変換トランス、
６・・・整流・平滑回路、７・・・負荷回路、８・・・
帰還用ダイオード、９・・・昇鋒圧用インダクタ、１０
・・・基準正弦波発生回路、１１・・・三角波同期信号
発生回路、１２・・・半波分割回路、１３・・・パルス
幅変調回路、１４．１５・・・ＰＷＭコンパレータ、１
６・・・出力電圧検出回路、１７・・・半波信号、１８
・・・三角波同期信号、１９・・・スイッチング駆動信
号。
第１図
第３図
第４図FIG. 1 is a block circuit diagram of an embodiment of the present invention, FIG. 2 is a waveform diagram of main parts in the configuration of FIG. 1, and FIGS. 3 and 4 are block circuit diagrams of different conventional inverter power supply circuits. It is. 1...DC power supply, 2...DC-DC converter, 3
．． 4... Switching element, 5... Conversion transformer,
6... Rectifier/smoothing circuit, 7... Load circuit, 8...
Feedback diode, 9... Boosting inductor, 10
... Reference sine wave generation circuit, 11 ... Triangular wave synchronization signal generation circuit, 12 ... Half wave division circuit, 13 ... Pulse width modulation circuit, 14.15 ... PWM comparator, 1
6... Output voltage detection circuit, 17... Half wave signal, 18
... Triangular wave synchronization signal, 19... Switching drive signal. Figure 1 Figure 3 Figure 4
Claims (1)
子で断続して二次側に交流電圧を得るようにしたインバ
ータ電源回路において、前記スイッチング素子を断続さ
せる駆動回路として、前記変換トランスの自己共振周波
数より低い第１の変換周波数信号を発生する手段と、こ
の自己共振周波数より高い第２の変換周波数信号を発生
する手段とを備え、前記第１の変換周波数信号を第２の
変換周波数信号でパルス幅変調した信号で前記スイッチ
ング素子を駆動するように構成したことを特徴とするイ
ンバータ電源回路。 ２、第１の変換周波数信号は基準正弦波信号であり、第
２の変換周波数信号は三角波信号である特許請求の範囲
第１項記載のインバータ電源回路。[Scope of Claims] 1. In an inverter power supply circuit in which a DC power supply on the primary side of a conversion transformer is switched on and off using a switching element to obtain an AC voltage on the secondary side, as a drive circuit that cuts on and off the switching element, the means for generating a first conversion frequency signal lower than the self-resonant frequency of the conversion transformer; and means for generating a second conversion frequency signal higher than the self-resonance frequency; An inverter power supply circuit characterized in that the switching element is driven by a signal pulse width modulated with a conversion frequency signal. 2. The inverter power supply circuit according to claim 1, wherein the first conversion frequency signal is a reference sine wave signal, and the second conversion frequency signal is a triangular wave signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02318622A JP3079564B2 (en) | 1990-11-24 | 1990-11-24 | Inverter power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02318622A JP3079564B2 (en) | 1990-11-24 | 1990-11-24 | Inverter power circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04190680A true JPH04190680A (en) | 1992-07-09 |
| JP3079564B2 JP3079564B2 (en) | 2000-08-21 |
Family
ID=18101195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02318622A Expired - Fee Related JP3079564B2 (en) | 1990-11-24 | 1990-11-24 | Inverter power circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3079564B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014171637A (en) * | 2013-03-08 | 2014-09-22 | Health Holdings Co Ltd | Ac potential curing instrument |
| JP2014183912A (en) * | 2013-03-22 | 2014-10-02 | Health Holdings Co Ltd | Alternating current potential treatment device |
| JP2014200612A (en) * | 2013-04-10 | 2014-10-27 | ヘルスホールディングス株式会社 | Alternating current potential treatment device |
| JP2015016061A (en) * | 2013-07-10 | 2015-01-29 | ヘルスホールディングス株式会社 | Alternating current potential treatment device |
| JP2015054105A (en) * | 2013-09-12 | 2015-03-23 | ヘルスホールディングス株式会社 | Ac electric potential therapy device |
| CN110336385A (en) * | 2018-03-28 | 2019-10-15 | 苹果公司 | Wireless charging device with Sinusoidal Pulse Width Modulation |
| CN114468394A (en) * | 2022-02-15 | 2022-05-13 | 哈勃智能传感(深圳)有限公司 | Resonant frequency extraction method, driving method and atomization system |
-
1990
- 1990-11-24 JP JP02318622A patent/JP3079564B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014171637A (en) * | 2013-03-08 | 2014-09-22 | Health Holdings Co Ltd | Ac potential curing instrument |
| JP2014183912A (en) * | 2013-03-22 | 2014-10-02 | Health Holdings Co Ltd | Alternating current potential treatment device |
| JP2014200612A (en) * | 2013-04-10 | 2014-10-27 | ヘルスホールディングス株式会社 | Alternating current potential treatment device |
| JP2015016061A (en) * | 2013-07-10 | 2015-01-29 | ヘルスホールディングス株式会社 | Alternating current potential treatment device |
| JP2015054105A (en) * | 2013-09-12 | 2015-03-23 | ヘルスホールディングス株式会社 | Ac electric potential therapy device |
| CN110336385A (en) * | 2018-03-28 | 2019-10-15 | 苹果公司 | Wireless charging device with Sinusoidal Pulse Width Modulation |
| CN110336385B (en) * | 2018-03-28 | 2024-04-02 | 苹果公司 | Wireless charging device with sinusoidal pulse width modulation |
| CN114468394A (en) * | 2022-02-15 | 2022-05-13 | 哈勃智能传感(深圳)有限公司 | Resonant frequency extraction method, driving method and atomization system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3079564B2 (en) | 2000-08-21 |
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