JPH0426373A - Rectifying circuit - Google Patents

Rectifying circuit

Info

Publication number
JPH0426373A
JPH0426373A JP13080190A JP13080190A JPH0426373A JP H0426373 A JPH0426373 A JP H0426373A JP 13080190 A JP13080190 A JP 13080190A JP 13080190 A JP13080190 A JP 13080190A JP H0426373 A JPH0426373 A JP H0426373A
Authority
JP
Japan
Prior art keywords
sine wave
input
error
output
voltage
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.)
Granted
Application number
JP13080190A
Other languages
Japanese (ja)
Other versions
JP2508362B2 (en
Inventor
Norihiro Mera
米良 慶弘
Shuji Kido
木戸 周二
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.)
Yuasa Corp
Original Assignee
Yuasa Corp
Yuasa Battery 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 Yuasa Corp, Yuasa Battery Corp filed Critical Yuasa Corp
Priority to JP13080190A priority Critical patent/JP2508362B2/en
Publication of JPH0426373A publication Critical patent/JPH0426373A/en
Application granted granted Critical
Publication of JP2508362B2 publication Critical patent/JP2508362B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To suppress the change to the load of DC output voltage by outputting a corrective sine wave for making an error sine wave zero, and comparing this corrective sine wave with a carrier, and generating such driving pulse of a transistor as approximating an AC input current to the sine wave. CONSTITUTION:A load current detector 5 for detecting a load current LL is provided and the output L of this load current detector 5 and the reference voltage Vref are input into an adder 20 and make it output corrective reference voltage Vref-c, and this corrective reference voltage Vref-c and the partial voltage of DC output voltage V0 are input into an error amplifier 11 so as to get corrective error voltage Ver-c for modulating the amplitude of a reference sine wave S. Hereby, even to the load ripple in a wide range, the Sa input into the error amplifier 14 can be controlled to a proper level.

Description

【発明の詳細な説明】 産業上の利用分管 本発明は整流回路に関するもので、さらに詳しく言えば
その交流入力電流が正弦波に近似でき、直流出力電圧の
負荷に対する変動が抑制できる整流回路に関するもので
ある。
[Detailed Description of the Invention] Industrial Applications The present invention relates to a rectifier circuit, and more specifically to a rectifier circuit whose AC input current can be approximated to a sine wave and whose DC output voltage can suppress fluctuations with respect to the load. It is.

従来の技術 近年、交流入力電流が正弦波に近似できる整流回路が注
目されている。このような整流回路の例を第2図により
説明する。すなわち、第2図において、交流側1からの
交流を整流する整流器4をダイオードDI、D2.D3
.D4が逆並列接続された4個のトランジスタ41゜4
2.43.44で構成し、かつこの整流器4と交流電源
1との間に交流リアクトル2と交流入力電流検出器15
とを介挿し、基準正弦波発生回路13によって得られる
交流入力電圧に同期した基準正弦波Sを掛算器12に入
力し、誤差増幅器11によって得られる直流出力電圧V
Qと基!電圧Vrefとの間の誤差電圧verによりて
前記基準正弦波Sを振幅変調し、この振幅変調波形Sa
と前記交流入力電流検出器15によって検出され、増幅
器16によって増幅された交流入力電流Iiの対応値I
aとを誤差増幅器14によって誤差増幅し、この誤差正
弦波serと基準正弦波Sとを比mfi17で比較して
前記誤差正弦迫serを零にする補正正弦波Scを出力
させ、この補正正弦波S。と搬送波としての三角波VΔ
とを比較器18で比較し、駆動回路19を介して前記ト
ランジスタ41 、42.43゜44の駆動パルスを得
るものである。
2. Description of the Related Art In recent years, rectifier circuits whose AC input current can approximate a sine wave have been attracting attention. An example of such a rectifier circuit will be explained with reference to FIG. That is, in FIG. 2, the rectifier 4 for rectifying the alternating current from the alternating current side 1 is connected to diodes DI, D2 . D3
.. Four transistors 41°4 with D4 connected in antiparallel
2.43.44, and an AC reactor 2 and an AC input current detector 15 are connected between the rectifier 4 and the AC power supply 1.
A reference sine wave S synchronized with the AC input voltage obtained by the reference sine wave generation circuit 13 is input to the multiplier 12, and the DC output voltage V obtained by the error amplifier 11 is
Q and base! The reference sine wave S is amplitude-modulated by the error voltage ver between the voltage Vref and the amplitude-modulated waveform Sa.
and the corresponding value I of the AC input current Ii detected by the AC input current detector 15 and amplified by the amplifier 16.
a is amplified by an error amplifier 14, and this error sine wave ser is compared with the reference sine wave S at a ratio mfi17 to output a corrected sine wave Sc that makes the error sine wave ser zero. S. and the triangular wave VΔ as carrier wave
A comparator 18 compares the two, and a drive pulse for the transistors 41 and 42.43.degree. 44 is obtained via a drive circuit 19.

このような整流回路の動作をさらに詳しく説明する。直
流出力電圧vOは抵抗10−1.10−2.10−3で
分圧されて誤差増幅器110反転入力端子に入力され、
その非反転入力端子に入力された基準電圧Vrafと比
較増幅されて出力に誤差電圧Verを得るように構成す
る。一方、交流側1から同期信号が入力される基準正弦
波発生回路13から得られた基準正弦波Sは、前記誤差
電圧verとともに掛算器12に入力されて振#a変調
される。この振幅変調された基準正弦波Saの振幅は、
直流出力電圧vOが大の時に小になり、直流出力電圧v
0が小の時に大になるように構成する。そして、この振
幅変調された基準正弦波Saは誤差増幅器14の非反転
入力端子に入力され、その反転入力端子には、分流器1
5で横比された交流入力電流工1が増幅器16を介して
その対応値工aに変換されて入力される。この動作は、
交流入力電流Iiが大であれば直流出力電圧v0は小に
なるため、前述した振幅変調によって基準正弦波の振幅
を大にし、交流入力電流工±が小であれば直流出力電圧
v0は大になるため、前述した振幅変調によって基準正
弦波の振幅を小にし、誤差増幅11141C入力される
s、、Iaを適正なレペρに制御しようというものであ
る。この誤差増幅器14の出力、すなわち誤差正弦波s
erは比較器17の反転入力端子に入力され、その非反
転入力端子に入力された基準正弦波Sと比較されてその
出力に誤差正弦波Serを零にするような補正正弦波S
cを出力する。この補正正弦波S。
The operation of such a rectifier circuit will be explained in more detail. The DC output voltage vO is divided by resistors 10-1.10-2.10-3 and input to the inverting input terminal of the error amplifier 110.
It is configured to be compared and amplified with a reference voltage Vraf input to its non-inverting input terminal to obtain an error voltage Ver as an output. On the other hand, a reference sine wave S obtained from a reference sine wave generation circuit 13 to which a synchronization signal is input from the AC side 1 is input to a multiplier 12 together with the error voltage ver, and modulated by amplitude #a. The amplitude of this amplitude-modulated reference sine wave Sa is:
When the DC output voltage vO is large, it becomes small, and the DC output voltage v
Configure it so that it becomes large when 0 is small. This amplitude-modulated reference sine wave Sa is input to the non-inverting input terminal of the error amplifier 14, and the inverting input terminal is connected to the shunt 1.
The alternating current input current factor 1 which is horizontally compared in step 5 is converted into its corresponding value factor a via the amplifier 16 and inputted. This operation is
If the AC input current Ii is large, the DC output voltage v0 will be small, so the amplitude of the reference sine wave will be increased by the amplitude modulation described above, and if the AC input current Ii is small, the DC output voltage v0 will be large. Therefore, the amplitude of the reference sine wave is reduced by the above-mentioned amplitude modulation, and s, , Ia input to the error amplification circuit 11141C is controlled to an appropriate ratio ρ. The output of this error amplifier 14, that is, the error sine wave s
er is input to the inverting input terminal of the comparator 17, and is compared with the reference sine wave S input to the non-inverting input terminal of the comparator 17 to output a corrected sine wave S that makes the error sine wave Ser zero.
Output c. This corrected sine wave S.

は比V器18の非反転入力端子に入力され、その反転入
力端子に入力された搬送波としての三角波VΔと比較さ
れてその出力に制御信号を得るように構成されている。
is input to the non-inverting input terminal of the ratio V converter 18, and is compared with the triangular wave VΔ as a carrier wave input to the inverting input terminal to obtain a control signal at its output.

このような制御信号によってトランジスタ41゜42.
45.44のオン、オフ期間を制御すると、交流入力電
流Iiを正弦波状にすることができる。
These control signals cause the transistors 41, 42 .
By controlling the on and off periods of 45.44, the AC input current Ii can be made into a sinusoidal waveform.

発明が解決しようとする課題 上記のような整流回路では、負荷電流が増加すると、そ
れに対応して直流出力電圧v0が小になり、交流入力電
流工1が大になることを用い、基準正弦波Sの振幅を大
にして増幅器14に入力されるS、を適正なレベルに制
御しているが、広い範囲の負荷変動に対しては追従でき
ず、直流出力電圧V。が低下するという欠点があった。
Problems to be Solved by the Invention In the rectifier circuit as described above, when the load current increases, the DC output voltage v0 correspondingly decreases and the AC input current factor 1 increases. Although the amplitude of S is increased to control S input to the amplifier 14 to an appropriate level, it cannot follow load fluctuations over a wide range, and the DC output voltage V. The disadvantage was that it decreased.

課題を解決するための手段 上記課題を解決するため、本発明の整流回路は、交流電
源からの交流を整流する整流器を、ダイオードが逆並列
接続されたトランジスタで構成し、かつこの整流器と交
流電源との間に交流リアクトルと交流入力電流検出器と
を介挿するとともに、負荷電流検出器を設け、交流入力
電圧に同期した基準正弦波を、直流出力電圧と前記負荷
電流検出器の出力に対応させた補正基準電圧との間の補
正製差電圧によって振幅変調し、この振幅変調波形と交
流入力電流の対応値とから誤差正弦波を出力させるとと
もに、この誤差正弦波を零にする補正正弦波と搬送波と
を比較して交流入力電流を正弦波に近似させるような前
記トランジスタの駆動パルスを得ることを特徴とするも
のである。
Means for Solving the Problems In order to solve the above problems, the rectifier circuit of the present invention comprises a rectifier for rectifying alternating current from an alternating current power source, consisting of transistors in which diodes are connected in antiparallel, and the rectifier and the alternating current power source An AC reactor and an AC input current detector are inserted between the AC input voltage and the load current detector, and a reference sine wave synchronized with the AC input voltage corresponds to the DC output voltage and the output of the load current detector. The amplitude is modulated by the corrected differential voltage between the corrected reference voltage and the corrected sine wave, and an error sine wave is output from this amplitude modulated waveform and the corresponding value of the AC input current, and a corrected sine wave is made to zero. and a carrier wave to obtain a drive pulse for the transistor that approximates the AC input current to a sine wave.

作用 基準正弦波を振幅変調するための誤差電圧をaカさせる
のに用いられる基準電圧を、負荷電流に対応させて変化
させているので、直流出力電圧の負荷に対する変動を抑
制することができる。
Since the reference voltage used to increase the error voltage for amplitude modulating the working reference sine wave is changed in accordance with the load current, fluctuations in the DC output voltage with respect to the load can be suppressed.

実施例 以下、本発明の実施例を第1図により説明する。Example Embodiments of the present invention will be described below with reference to FIG.

第1図において、第2図と同じ機能を備えたものには同
じ符号を付して以下の説明を省略する。本発明の特徴は
、負荷電流I)を検出するための負荷電流検出器5を設
けるとともに、この負荷電流検出器5の出力りと基準電
圧Vrefとを加算器20に入力して補正基準電圧Vr
af−〇を出力させ、この補正基準電圧Vref −c
と直流出力電圧voの分圧電圧とを誤差増幅器11に入
力して基準正弦波Sを振幅変調するための補正誤差電圧
War−0を得るようにしたことである。すなわち、負
荷電流II、が大になると、前記負荷電流検出器5の出
力りが大になって補正基準電圧Vref−0は大になる
から、補正誤差電圧ver −cは小になり、振幅変調
によって基準正弦波の振幅を大にすることができ、また
、負荷電流工、が小になると、前記負荷電流検出器5の
出力りが小になって補正基準電圧Vref −cは小に
なるから、補正誤差電圧ver−〇は大になり、振幅変
調によって基池正弦波の振幅を小にすることができ、広
い範囲の負荷変動に対しても、課査増幅器14に入力さ
れるSaを適正なレベルに制御することができ、それに
伴う直流出力電圧vOの低下を小さくすることができる
In FIG. 1, components having the same functions as those in FIG. 2 are designated by the same reference numerals, and the following explanation will be omitted. The present invention is characterized by providing a load current detector 5 for detecting the load current I), and inputting the output of the load current detector 5 and a reference voltage Vref to an adder 20 to obtain a corrected reference voltage Vr.
af-〇 is output, and this corrected reference voltage Vref -c
and a divided voltage of the DC output voltage vo are input to the error amplifier 11 to obtain a corrected error voltage War-0 for amplitude modulating the reference sine wave S. That is, when the load current II becomes large, the output of the load current detector 5 becomes large and the correction reference voltage Vref-0 becomes large, so the correction error voltage ver-c becomes small and the amplitude modulation The amplitude of the reference sine wave can be increased by , and when the load current becomes small, the output of the load current detector 5 becomes small and the corrected reference voltage Vref -c becomes small. , the correction error voltage ver-〇 becomes large, the amplitude of the fundamental sine wave can be made small by amplitude modulation, and even for a wide range of load fluctuations, Sa input to the bias amplifier 14 can be adjusted appropriately. The DC output voltage vO can be controlled to a suitable level, and the accompanying drop in the DC output voltage vO can be reduced.

発明の効果 実施例において詳述した如く、本発明の整流回路は、広
い範囲の負荷変動に対しても、直流出力電圧の低下を小
さくすることができ、しかも歪の少ない正弦波状の交流
入力電流を得ることができる。
Effects of the Invention As detailed in the embodiments, the rectifier circuit of the present invention can reduce the drop in DC output voltage even in a wide range of load fluctuations, and can generate a sinusoidal AC input current with little distortion. can be obtained.

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

第1図は本発明の整流回路の回路図、第2図は従来の整
流回路の回路図である。 2・・・交流リアクト/L/3・・・コンデンサ4・・
・整流器     5・・・負荷電流検出器11、14
・・・誤差増幅器 12・・・掛算器13・・・基準正
弦波発生回路 15・・・交流入力電流検出器
FIG. 1 is a circuit diagram of a rectifier circuit according to the present invention, and FIG. 2 is a circuit diagram of a conventional rectifier circuit. 2... AC reactor/L/3... Capacitor 4...
- Rectifier 5...Load current detector 11, 14
...Error amplifier 12...Multiplier 13...Reference sine wave generation circuit 15...AC input current detector

Claims (1)

【特許請求の範囲】[Claims] 交流電源からの交流を整流する整流器をダイオードが逆
並列接続されたトランジスタで構成し、かつこの整流器
と交流電源との間に交流リアクトルと交流入力電流検出
器とを介挿するとともに、負荷電流を検出する負荷電流
検出器を設け、基準正弦波発生回路によって得られる交
流入力電圧に同期した基準正弦波を、直流出力電圧と前
記負荷電流検出器の出力に対応させた補正基準電圧との
間の補正誤差電圧とともに掛算器に入力して振幅変調し
、この振幅変調波形と交流入力電流の対応値とを誤差増
幅器に入力して誤差正弦波を出力させ、この誤差正弦波
と前記基準正弦波とを比較し、誤差正弦波を零にする補
正正弦波を出力し、この補正正弦波と搬送波とを比較し
、交流入力電流を正弦波に近似させるような前記トラン
ジスタの駆動パルスを得ることを特徴とする整流回路。
A rectifier that rectifies alternating current from an alternating current power source is constructed of transistors with diodes connected in antiparallel, and an alternating current reactor and an alternating current input current detector are inserted between the rectifier and the alternating current power source, and the load current is A load current detector is provided to detect the reference sine wave synchronized with the AC input voltage obtained by the reference sine wave generating circuit, and the reference sine wave is generated between the DC output voltage and the corrected reference voltage corresponding to the output of the load current detector. The corrected error voltage is input to a multiplier for amplitude modulation, and this amplitude modulated waveform and the corresponding value of the AC input current are input to an error amplifier to output an error sine wave, and this error sine wave is combined with the reference sine wave. , outputs a corrected sine wave that makes the error sine wave zero, and compares the corrected sine wave with a carrier wave to obtain a driving pulse for the transistor that approximates the AC input current to the sine wave. A rectifier circuit.
JP13080190A 1990-05-21 1990-05-21 Rectifier circuit Expired - Lifetime JP2508362B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13080190A JP2508362B2 (en) 1990-05-21 1990-05-21 Rectifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13080190A JP2508362B2 (en) 1990-05-21 1990-05-21 Rectifier circuit

Publications (2)

Publication Number Publication Date
JPH0426373A true JPH0426373A (en) 1992-01-29
JP2508362B2 JP2508362B2 (en) 1996-06-19

Family

ID=15043030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13080190A Expired - Lifetime JP2508362B2 (en) 1990-05-21 1990-05-21 Rectifier circuit

Country Status (1)

Country Link
JP (1) JP2508362B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6084786A (en) * 1999-01-29 2000-07-04 Hamilton Sundstrand Corporation Converter system with power factor and DC ripple control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6084786A (en) * 1999-01-29 2000-07-04 Hamilton Sundstrand Corporation Converter system with power factor and DC ripple control

Also Published As

Publication number Publication date
JP2508362B2 (en) 1996-06-19

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