JPS6198159A - Dc power source - Google Patents
Dc power sourceInfo
- Publication number
- JPS6198159A JPS6198159A JP21640984A JP21640984A JPS6198159A JP S6198159 A JPS6198159 A JP S6198159A JP 21640984 A JP21640984 A JP 21640984A JP 21640984 A JP21640984 A JP 21640984A JP S6198159 A JPS6198159 A JP S6198159A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- high frequency
- semiconductor switch
- power source
- commercial
- 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
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、商用交流電圧から安定な直流電圧を作り出し
て負荷に供給する直流電源装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a DC power supply device that generates a stable DC voltage from a commercial AC voltage and supplies it to a load.
第３図はかかる直流電源装置の従来例を示すブロック図
である。FIG. 3 is a block diagram showing a conventional example of such a DC power supply device.
同図に見られるように、従来の直流電源装置は、商用交
流電源１からの交流電圧を整流部２において直接整流し
、次いで入力フィルタ部３において平滑することにより
直流電圧を得た後、スイッチング部４において該直流電
圧を高周波で断続してからトランス５に入力し、該トラ
ンス５の２次側から得られる高周波交流電圧を整流部６
により整流して直流電圧に変換し、更に出力フィルタ部
７により平滑し直流電圧として負荷８に供給すると共に
、負荷８に供給されるこの直流電圧が変動すると、制御
回路９がその変動分を検出し、該変動分を打ち消すよう
に、スイッチング部４における断続比（スイッチング部
４を構成するスイッチングトランジスタの導通期間の幅
）を制御するＰＷＭ（パルス幅変調）制御を行ない、安
定な直流電圧を負荷８に供給するようにしていた。As seen in the figure, the conventional DC power supply device directly rectifies AC voltage from a commercial AC power supply 1 in a rectifier 2, then smoothes it in an input filter unit 3 to obtain a DC voltage, and then performs switching. The DC voltage is intermittent at a high frequency in a section 4 and then inputted to a transformer 5, and the high frequency AC voltage obtained from the secondary side of the transformer 5 is passed through a rectifier 6.
The DC voltage is rectified and converted into a DC voltage by the output filter section 7, and is then smoothed and supplied to the load 8 as a DC voltage.When this DC voltage supplied to the load 8 fluctuates, the control circuit 9 detects the fluctuation. Then, in order to cancel out the variation, PWM (pulse width modulation) control is performed to control the on/off ratio (width of the conduction period of the switching transistor constituting the switching unit 4) in the switching unit 4, and a stable DC voltage is applied to the load. I was trying to supply it to 8.
かかる従来の直流電源装置では、商用交流電源１カシら
の交流電圧を一旦直流電圧に変換した後スイッチング部
４で高周波交流電圧に変換する方式 。In such a conventional DC power supply device, the AC voltage of a commercial AC power source is first converted into DC voltage, and then the switching unit 4 converts it into high-frequency AC voltage.
を採っているため、入力整流部２による損失、スイッチ
ング部４による損失が発生し、このため、交流電圧から
直流電圧への変換効率が低くなるという欠点があった。Therefore, a loss occurs due to the input rectifying section 2 and a loss due to the switching section 4, resulting in a disadvantage that the conversion efficiency from AC voltage to DC voltage becomes low.
また、入力整流部２を冷却するための冷却フィンを大形
化する必要があり、そのため直流電源装置の小形化、軽
量化を図ろうとしても、それが困難になるという問題が
あった。Furthermore, it is necessary to increase the size of the cooling fins for cooling the input rectifying section 2, which makes it difficult to reduce the size and weight of the DC power supply device.
さらに、商用電源印加時に入力フィルタ部３におけるコ
ンデンサを充電するための突入電流が流れ、これにより
整流部２におけるダイオードが破壊したりしないよう、
リアクタの挿入あるいは突入電流防止回路が必要であり
、回路構成が複雑化し、コスト高を招くという欠点もあ
った。Furthermore, measures are taken to prevent a rush current from flowing to charge the capacitor in the input filter section 3 when commercial power is applied, which may destroy the diode in the rectifier section 2.
This method requires the insertion of a reactor or an inrush current prevention circuit, which complicates the circuit configuration and increases costs.
〔発明が解決しようとする問題点〕
そこで本発明が解決しようとする問題点は、直流電源装
置において、損失を軽減して変換効率を麓めること、装
置の小形化、軽量化を可能にすること、回路構成を簡単
化してコストを低度にすること、にあると云える。[Problems to be solved by the invention] Therefore, the problems to be solved by the present invention are to reduce the loss in a DC power supply device to lower the conversion efficiency, and to make the device smaller and lighter. It can be said that the main purpose is to simplify the circuit configuration and reduce costs.
従って本発明は、変換効率が高く、小形軽量であり、し
かも回路構成が簡単でコスト低度な直流電源装置を提供
することを目的とする。Therefore, an object of the present invention is to provide a DC power supply device that has high conversion efficiency, is small and lightweight, has a simple circuit configuration, and is low in cost.
〔問題点を解決するための手段および′作用〕上記問題
点を解決するため、本発明による直流電源′装置では、
トランスの１次巻線の一端と２次巻線の一端とを接続し
、該１次巻線の他端と２次巻線の他端との間に、逆耐圧
を有する第１の半導体スイッチと第２の半導体スイッチ
を極性を異にして直列に接続し、前記１次巻線支２次巻
線の接続点と前記第１の半導体スイッチと第２の半導体
スイッチの接続点との間に交流電源を接続し、前記第１
の半導体スイッチと第２の半導体スイッチを前記交流電
源の周波数よりも高い周波数で交互にオン、オフさせる
ことにより、前記トランスの３次巻線から得られる出力
を整流して直流電圧として負荷へ供給するようにしたこ
とを特徴としている。[Means and effects for solving the problem] In order to solve the above problem, the DC power supply device according to the present invention has the following features:
a first semiconductor switch that connects one end of a primary winding and one end of a secondary winding of a transformer and has a reverse breakdown voltage between the other end of the primary winding and the other end of the secondary winding; and a second semiconductor switch are connected in series with different polarities, and between the connection point of the primary winding support secondary winding and the connection point of the first semiconductor switch and the second semiconductor switch. Connect the AC power supply and
By alternately turning on and off the semiconductor switch and the second semiconductor switch at a frequency higher than the frequency of the AC power supply, the output obtained from the tertiary winding of the transformer is rectified and supplied to the load as a DC voltage. It is characterized by the fact that it is made to do so.
次に図を参照して本発明の詳細な説明する。 The present invention will now be described in detail with reference to the drawings.
第１図は本発明の一実施例を示す回路図である。FIG. 1 is a circuit diagram showing one embodiment of the present invention.
同図において、１は商用交流電源、５は高周波トランス
、６は出力整流部、７は出力フィルタ部、８は負荷、１
０はスイッチング部、１１は制御回路、１３．１４はそ
れぞれ半導体スイッチ、である。In the figure, 1 is a commercial AC power supply, 5 is a high frequency transformer, 6 is an output rectifier, 7 is an output filter, 8 is a load, 1
0 is a switching unit, 11 is a control circuit, and 13 and 14 are semiconductor switches.
動作は次の如くである。商用交流電源１からの交流電圧
をスイッチング部１０にてスイッチングすることにより
高周波電圧に変換して高周波トランス５に入力し、該ト
ランス５の出力側から高周波交流電圧を発生させる。
・
高周波トランス５からの該交流電圧は出力整流部６にお
いて整流され１．出力フィルタ部７により平滑されて負
荷８に供給される。制御回路１１は、電源１からの交流
入力電圧を検出し、負荷８へ供給される出力電圧が一定
になるように、スイッチング部１０の逆耐圧を有する半
導体スイッチ１３゜１４を交流電源１の周波数よりも高
い高周波でオン、オフさせるべく、これらスイッチのゲ
ート電極へゲートパルスの供給を行う。 □第２
図に第１図に示した回路の各部の波形を示す。The operation is as follows. The alternating current voltage from the commercial alternating current power supply 1 is switched by the switching unit 10 to be converted into a high frequency voltage and inputted to the high frequency transformer 5, and the high frequency alternating current voltage is generated from the output side of the transformer 5.
- The AC voltage from the high frequency transformer 5 is rectified in the output rectifier 6 and 1. It is smoothed by the output filter section 7 and supplied to the load 8 . The control circuit 11 detects the AC input voltage from the power supply 1 and changes the frequency of the AC power supply 1 to the semiconductor switches 13 and 14 having a reverse withstand voltage of the switching unit 10 so that the output voltage supplied to the load 8 is constant. Gate pulses are supplied to the gate electrodes of these switches in order to turn them on and off at a higher frequency. □Second
The figure shows waveforms at various parts of the circuit shown in FIG.
商用交流電源１からの交流電圧波形をａに示す。The AC voltage waveform from the commercial AC power supply 1 is shown in a.
ａは半サイクルごとに正、負を繰り返す正弦波電圧であ
る。ａが正の期間には、スイッチング部１０のスイッチ
１３を高周波でオン、オフさせて、高周波トランス５の
出力側に高周波交流電圧を発生させる。a is a sine wave voltage that repeats positive and negative every half cycle. During the period when a is positive, the switch 13 of the switching unit 10 is turned on and off at high frequency to generate a high frequency AC voltage on the output side of the high frequency transformer 5.
第２図にＵで示したように出力電圧を一定にするには、
交流入力電圧ａの大きさに応じて第２図にＭで示したよ
うに、スイッチ１３のゲート電極に印加されるゲートパ
ルスのパルス幅制御を行う必要がある。すなわち交流入
力電圧が高い場合にはパルス幅を狭くし、交流入力電圧
が低い場合にはパルス幅を広くするように制御する。To keep the output voltage constant as shown by U in Figure 2,
It is necessary to control the pulse width of the gate pulse applied to the gate electrode of the switch 13, as indicated by M in FIG. 2, depending on the magnitude of the AC input voltage a. That is, when the AC input voltage is high, the pulse width is narrowed, and when the AC input voltage is low, the pulse width is controlled to be widened.
交流入力電圧ａが正の場合には、スイッチング部ｌＯの
半導体スイッチ１４をオンさせても高周波トランス５を
介して負荷８へ電力の供給は行えないが、半導体スイッ
チ１３がオンの期間に高周波トランス５に蓄えられた励
磁エネルギーを半導体スイッチ１３がオフした後に半導
体スイッチ１４を第２図でＮに示すようにオンさせるこ
とにより電ｄｒＸ側へ帰還させることができる。When the AC input voltage a is positive, power cannot be supplied to the load 8 via the high-frequency transformer 5 even if the semiconductor switch 14 of the switching unit 1O is turned on; however, while the semiconductor switch 13 is on, the high-frequency transformer By turning on the semiconductor switch 14 as indicated by N in FIG. 2 after the semiconductor switch 13 turns off, the excitation energy stored in the magnet 5 can be fed back to the electric drX side.
ａが負の期間には、負荷８へ電力番供給するのは半導体
スイッチ１４であり、直流出力電圧を一定に保つように
第２図でＮに示すようにそのゲートパルスのパルス幅制
御を行う。半導体スイッチ１３は半導体スイッチ１４が
オンの期間に高周波トランス５に蓄えた励磁エネルギー
を電源側へ帰還させるため第２図でＭに示すように動作
させる。During the period when a is negative, the semiconductor switch 14 supplies power to the load 8, and its gate pulse width is controlled as shown by N in FIG. 2 to keep the DC output voltage constant. . The semiconductor switch 13 is operated as shown by M in FIG. 2 in order to feed back the excitation energy stored in the high frequency transformer 5 to the power source while the semiconductor switch 14 is on.
このように、負荷へ電力を供給する半導体スイッチとト
ランスの励磁エネルギーを交流電源側へ帰還する半導体
スイッチが商用交流電圧の半サイクルごとに入れかわっ
て動作する。In this way, the semiconductor switch that supplies power to the load and the semiconductor switch that returns the excitation energy of the transformer to the AC power supply side are switched and operated every half cycle of the commercial AC voltage.
第２図では、商用電源つまり交流入力電圧ａの半サイク
ル中において図示したＭ、Ｎ信号のパルス数は少ないが
、このパルス数を非常に多くすることにより高周波トラ
ンス５及び出力フィルタマを大幅に小形化することがで
きる。In Fig. 2, the number of pulses of the M and N signals shown during a half cycle of the commercial power supply, that is, the AC input voltage a, is small, but by increasing the number of pulses, the high frequency transformer 5 and the output filter can be significantly downsized. can be converted into
なお、第１図と第３図を対比すれば明らかなように、本
発明においては、商用交流を一旦直流電圧に変換するこ
となく、直接高周波交流電圧に変換する方式を採ってい
るため、整流部２、入力フィルタ部３を省くことが出来
、損失の低減、冷却フィンの削除、信頼性の向上等を図
ることが可能となる。この技術は商用電源を入力とする
直流電源装置のすべてに応用することが出来る。As is clear from comparing Figures 1 and 3, the present invention employs a method of directly converting commercial AC into high-frequency AC voltage without first converting it into DC voltage, so rectification is required. 2 and input filter section 3 can be omitted, it is possible to reduce loss, eliminate cooling fins, and improve reliability. This technology can be applied to all DC power supplies that use commercial power as input.
また第１図に示した実施例では、制御回路１１は電源１
からの交流入力電圧を検出してこれをその制御に用いる
ものとして説明したが、このことは必ずしも必要でない
。すなわち、制御回路１１は、電源１からの交流入力電
圧を取り込まず、それとは独立に動作しても、交流電源
１の周波数より高い周波数で半導体スイッチ１３．１４
をオン、オフさせることが出来れば、負荷８へ、それな
りに安定な直流電圧を供給することができる。Further, in the embodiment shown in FIG.
Although the description has been made assuming that the alternating current input voltage from the converter is detected and used for control, this is not necessarily necessary. That is, even if the control circuit 11 does not take in the AC input voltage from the power supply 1 and operates independently of it, the semiconductor switch 13 , 14 operates at a frequency higher than the frequency of the AC power supply 1 .
If it is possible to turn on and off, a reasonably stable DC voltage can be supplied to the load 8.
以上、説明したように、本発明によれば、商用交流を直
接高周波でスイッチングし、かつスイッチング位相制御
も同時に行う方式を採っているため、出力に含まれる低
周波成分を小さくでき、それにより使用するトランス、
出力フィルタか小形軽量化できるので、従来要した入力
整流部、入力フィルタ部が不要になることと相まって、
直流型′ｒＡ装置における変換効率の向上、装置の小形
軽量化、コストの低廉化を実現できるという利点がある
。As explained above, according to the present invention, since a method is adopted in which commercial AC is directly switched at high frequency and switching phase control is also performed at the same time, it is possible to reduce the low frequency components included in the output, thereby making it possible to transformer,
Since the output filter can be made smaller and lighter, the input rectification section and input filter section that were required in the past are no longer required.
There are advantages in that the conversion efficiency of the DC type 'rA device can be improved, the device can be made smaller and lighter, and the cost can be reduced.
第１図は本発明の一実施例を示す回路図、第２図は第１
図に示した回路における各部の動作波形を示す波形図、
第３図は直流電源装置の従来例を示すブロック図、であ
る。
符号説明Fig. 1 is a circuit diagram showing one embodiment of the present invention, and Fig. 2 is a circuit diagram showing an embodiment of the present invention.
A waveform diagram showing the operating waveforms of each part in the circuit shown in the figure,
FIG. 3 is a block diagram showing a conventional example of a DC power supply device. Code explanation
Claims (1)
続し、該１次巻線の他端と２次巻線の他端との間に、逆
耐圧を有する第１の半導体スイッチと第２の半導体スイ
ッチを極性を異にして直列に接続し、前記１次巻線と２
次巻線の接続点と前記第１の半導体スイッチと第２の半
導体スイッチの接続点との間に交流電源を接続し、前記
第１の半導体スイッチと第２の半導体スイッチを前記交
流電源の周波数よりも高い周波数で交互にオン、オフさ
せることにより、前記トランスの３次巻線から得られる
出力を整流して直流電圧として負荷へ供給するようにし
たことを特徴とする直流電源装置。1) One end of the primary winding and one end of the secondary winding of the transformer are connected, and a first A semiconductor switch and a second semiconductor switch are connected in series with different polarities, and the primary winding and the second semiconductor switch are connected in series.
An alternating current power source is connected between a connection point of the next winding and a connection point of the first semiconductor switch and the second semiconductor switch, and the first semiconductor switch and the second semiconductor switch are connected at a frequency of the alternating current power source. A DC power supply device characterized in that the output obtained from the tertiary winding of the transformer is rectified by being alternately turned on and off at a higher frequency than the transformer and supplied to the load as a DC voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21640984A JPS6198159A (en) | 1984-10-17 | 1984-10-17 | Dc power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21640984A JPS6198159A (en) | 1984-10-17 | 1984-10-17 | Dc power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6198159A true JPS6198159A (en) | 1986-05-16 |
Family
ID=16688107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21640984A Pending JPS6198159A (en) | 1984-10-17 | 1984-10-17 | Dc power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6198159A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57156678A (en) * | 1981-03-24 | 1982-09-28 | Nippon Gakki Seizo Kk | Electric power source device |
-
1984
- 1984-10-17 JP JP21640984A patent/JPS6198159A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57156678A (en) * | 1981-03-24 | 1982-09-28 | Nippon Gakki Seizo Kk | Electric power source device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH04299070A (en) | Switching regulator | |
| JPH08228484A (en) | Phase control smr converter | |
| JPH10150769A (en) | Forward type dc-dc converter | |
| JP2704519B2 (en) | DC power supply | |
| JPH06141536A (en) | Low-loss power supply device including dc/dc converter | |
| JPS6198159A (en) | Dc power source | |
| JPH07135769A (en) | Dc resonance converter | |
| JPH10155273A (en) | Switching mode rectifying circuit | |
| JP2628059B2 (en) | DC power supply | |
| JPH0564451A (en) | Power source apparatus | |
| JP7160719B2 (en) | Single-converter isolated switching power supply | |
| JPH06284723A (en) | Power-supply device | |
| JP2867069B2 (en) | Switching power supply | |
| JP3456788B2 (en) | Switching power supply | |
| JP2001197752A (en) | Inverter | |
| JP2963776B2 (en) | Power supply | |
| JP2500553B2 (en) | Power system | |
| JP2728682B2 (en) | Uninterruptible power supply for computer | |
| JPS6198160A (en) | Dc power source | |
| JPH07312871A (en) | D.c. power supply | |
| JPH01186161A (en) | Dc/dc converter circuit | |
| JPH10225119A (en) | Switching power source | |
| JP2637646B2 (en) | DC power supply circuit | |
| JPH09149648A (en) | Switching power supply | |
| JPH09294378A (en) | Converter |