JPS6055898A - Dc generating apparatus - Google Patents

Dc generating apparatus

Info

Publication number
JPS6055898A
JPS6055898A JP58162128A JP16212883A JPS6055898A JP S6055898 A JPS6055898 A JP S6055898A JP 58162128 A JP58162128 A JP 58162128A JP 16212883 A JP16212883 A JP 16212883A JP S6055898 A JPS6055898 A JP S6055898A
Authority
JP
Japan
Prior art keywords
generator
phase
output
rectifier
wave
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
JP58162128A
Other languages
Japanese (ja)
Inventor
Hifumi Wada
和田　一二三
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP58162128A priority Critical patent/JPS6055898A/en
Priority to DE3432128A priority patent/DE3432128A1/en
Publication of JPS6055898A publication Critical patent/JPS6055898A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
    • H02J7/1484—Regulation of the charging current or voltage otherwise than by variation of field by commutation of the output windings of the generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/08—Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/0085—Partially controlled bridges

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Rectifiers (AREA)

Abstract

PURPOSE:To enable to supply a sufficient load current in a wide rotating range without increasing the size of a generator by switching a rectifier from a 3- phase full-wave circuit to 3-phase half-wave circuit or vice versa through a thyristor or a diode. CONSTITUTION:When an engine is started by operating an engine starter, a generator 1 is driven, and 3-phase voltages are generated at generating coils 2a, 2b, 2c. In this state, a gate signal G of a controller 6 is ON, and thyristors 5a, 5b, 5c of a 3-phase rectifier 4 are conducted. Accordingly, 3-phase full-wave rectified voltage is generated between the DC output terminals. When the output current I reaches the value I1, the gate signal G of the controller 6 becomes OFF, and the thyristors 5a, 5b, 5c are interrupted. Accordingly, the rectifier 4 is connected in a half-wave rectifying circuit, and the 3-phase half-wave rectified voltages of the phase voltages of the coils 2a, 2b, 2c are generated between the DC output terminals of the rectifier.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は、車輛の原動機などにょシ駆動される三相交
流発電機及びこの発電機の交浦出カを直流出力に変換す
る整流装置を備えた直流発電装置に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is directed to a three-phase alternating current generator that is driven by a motor such as a vehicle prime mover, and a rectifier that converts the alternating current output of the generator into a direct current output. The present invention relates to a DC power generation device.

〔従来技術〕[Prior art]

この種の直流発電装置は、例えば自動車においては車載
蓄電池の充電並びに点灯器具などの電源として使用され
るものであり、発電機を駆動する原動機の回転数が低い
状態であっても充分な負荷電流を供給し得ることが望ま
しい。従来、この種の装置−として、等公昭４３−１３
２８に示すものがあった。This type of DC power generator is used, for example, in automobiles to charge the on-board storage battery and as a power source for lighting equipment, etc., and can provide sufficient load current even when the rotational speed of the prime mover that drives the generator is low. It is desirable to be able to supply Conventionally, as this type of device, the
There was one shown in 28.

このような従来装置は、発電コイルの接続を切替接点に
よ６ｙ結線からΔ結線へ又はその逆へ切替をしているの
で、数十アンペアの電流を接点で断続制御しなければな
らないので、装置の経済性が悪く、実用化が困難でおっ
た。In such conventional devices, the connection of the generator coil is switched from 6Y connection to Δ connection, or vice versa, using a switching contact, so a current of several tens of amperes must be controlled on and off using the contact. The economic efficiency of the method was poor, making it difficult to put it into practical use.

〔発明の概要〕[Summary of the invention]

この発明は、上記のような従来のものの欠点を除去する
ためになされたもので、整流装置をサイリスク及びダイ
オードを介して三相全波回路から三相半波回路へ又はそ
の逆へ切替えることにより発′ｍ５機を大型にすること
なく、交流発電機の広い回転領域で充分な負荷電流を供
給できる直流発電装置を提供することを目的としている
。This invention was made to eliminate the drawbacks of the conventional ones as described above, and by switching the rectifier from a three-phase full-wave circuit to a three-phase half-wave circuit or vice versa through a sirisk and a diode. It is an object of the present invention to provide a DC power generator that can supply sufficient load current over a wide rotation range of an AC generator without increasing the size of the generator.

〔発明の実施例〕[Embodiments of the invention]

以下、この発明の一実施例を図について説明する。第１
図において、１は車輌の機関（図示せず）により駆動さ
れる交流発電機でろって、三相発電コイル２ａ、２ｂ、
２ｃ及び界磁コイル６を有している。４は三相整流装置
で、その正極出力端子に接続の整流器はサイリスタ５ａ
　、　５ｂ　、　５ｃで構成され、その各ゲート端子は
いずれもコントローラ６に接１ＩＱＴ１され、その負極
出力端子に接続の整流器はダイオードで構成されている
。７はダイオードで、正極出力端子と三相発電コイル２
　ａ　＋２ｂ、２ｃの中性点との間に接続されている。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 1 is an alternating current generator driven by a vehicle engine (not shown), with three-phase generator coils 2a, 2b,
2c and a field coil 6. 4 is a three-phase rectifier, and the rectifier connected to its positive output terminal is a thyristor 5a.
. 7 is a diode, which connects the positive output terminal and the three-phase generator coil 2.
It is connected between a + 2b and the neutral point of 2c.

コントローラ６は出力電流センサ８または回転数センサ
９から信号を受け、サイリスタ５ａ　＋　５ｂ　。The controller 6 receives a signal from the output current sensor 8 or the rotation speed sensor 9 and outputs the signal from the thyristor 5a + 5b.

５ｃの各ゲート端子に信号を供給する。１ｏは蓄電池、
１１はキースイッチ、１２はランプなどの車輛における
電気な負荷、１６は界磁コイル６に流入する励磁電流を
加減する電圧調整器である。A signal is supplied to each gate terminal of 5c. 1o is a storage battery,
11 is a key switch, 12 is an electrical load in the vehicle such as a lamp, and 16 is a voltage regulator that adjusts the excitation current flowing into the field coil 6.

動作を説明すると、まず機関を始動すべく、キースイッ
チ１１を閉成すると、蓄電池１０から界磁コイル６に励
磁電流が供給され、図示しない機関始動装置を作動させ
、機関を始動させると、発雷機１が駆動され、各発電コ
イル２ａ　、　２ｂ　、　２ｃに三相電圧が発生する。To explain the operation, first, when the key switch 11 is closed to start the engine, excitation current is supplied from the storage battery 10 to the field coil 6, and when the engine starting device (not shown) is activated and the engine is started, the engine starts. The lightning machine 1 is driven, and three-phase voltages are generated in each of the generator coils 2a, 2b, and 2c.

この状態では、コントローラ６のゲート信号Ｇはオンに
あり、三相整流装置４のサイリスタ５　ａ　＊　５　ｂ
　＋　５　ｃは導通するので、直流出力端子間には三相
全波整流電圧が発生する。この整流電圧が機関回転数の
増大に伴ない蓄電池１０の端子電圧を越えると、蓄電池
１０を充電し、負荷１２に給電するものとなる。In this state, the gate signal G of the controller 6 is on, and the thyristors 5 a * 5 b of the three-phase rectifier 4
+5c is conductive, so a three-phase full-wave rectified voltage is generated between the DC output terminals. When this rectified voltage exceeds the terminal voltage of the storage battery 10 as the engine speed increases, the storage battery 10 is charged and power is supplied to the load 12.

第２図は発電機１の回転数Ｎと直流発電装置の出力電流
■との関係を示すものである。図中、曲線Ａは、三相整
流装置４を全波整流回路に接続した場合の関係を示し、
出力電流■は発電機１の回転数Ｎが値Ｎ。に達した時か
ら流れ始め、回転数Ｎが所定値Ｎ、に達した時に値■、
になる。出力電流Ｉが値Ｉ□に達した時にコントローラ
６のゲート信号Ｇはオフとなり、サイリスタ５ａ　、５
ｂ　、５ｃは不導通となる。したがって三相整流装置４
は半波整流回路の接続となり、整流装置の直流出力端子
間には各発電コイル２ａ、２ｂ、２ｃの相電圧の三相半
波整流電圧が発生する。発電機１の回転数Ｎと出力電流
■との関係は第２図の曲ｉＢに示されており、出力電流
工は全波−半波整流回路の切替動作によシ、発電機１０
回転数Ｎが所定値Ｎ、を越えて増大すれば、値Ｉ、に達
する。値Ｉ、は三相全波整流接続時の飽和出力電流値の
約２倍の出力電流である。機関回転数が低下し、発電機
１の回転数Ｎが低下すると、前述の逆の動作となり、負
荷電流Ｉが値Ｉ、に達した時に三相半波接続から三相全
波接続への切替が行なわれる。FIG. 2 shows the relationship between the rotation speed N of the generator 1 and the output current ■ of the DC generator. In the figure, curve A shows the relationship when the three-phase rectifier 4 is connected to a full-wave rectifier circuit,
The output current ■ has the value N of the rotation speed N of the generator 1. The flow starts when the rotation speed N reaches the predetermined value N, and when the rotation speed N reaches the predetermined value N,
become. When the output current I reaches the value I□, the gate signal G of the controller 6 turns off, and the thyristors 5a, 5
b and 5c become non-conductive. Therefore, the three-phase rectifier 4
is a connection of a half-wave rectifier circuit, and a three-phase half-wave rectified voltage of the phase voltage of each generating coil 2a, 2b, 2c is generated between the DC output terminals of the rectifier. The relationship between the rotational speed N and the output current ■ of the generator 1 is shown in curve iB of FIG.
If the rotational speed N increases beyond a predetermined value N, the value I is reached. The value I is an output current that is approximately twice the saturated output current value when three-phase full-wave rectification is connected. When the engine speed decreases and the rotation speed N of the generator 1 decreases, the operation is the opposite of that described above, and when the load current I reaches the value I, the three-phase half-wave connection is switched to the three-phase full-wave connection. will be carried out.

なお、上記実施例では三相整流装置の正極出力端子側に
サイリスタとダイオードを接続したものを示したが、第
３図に示すように、負極出力端子側に接続してもよい。In the above embodiment, the thyristor and the diode are connected to the positive output terminal side of the three-phase rectifier, but they may be connected to the negative output terminal side as shown in FIG.

また、上記実施例では三相全波−三相半波の切替を出力
電流を検知して制御する場合について説明したが、駆動
機関または発電機の回転数を検知して三相全波−三相半
波の切替を行なってもよく、上記実施例と同様の効果を
奏する。In addition, in the above embodiment, the case where the switching between three-phase full wave and three-phase half-wave is controlled by detecting the output current was explained, but the rotation speed of the drive engine or generator is detected and the switching between three-phase full-wave and three-phase half-wave is controlled. Phase/half wave switching may also be performed, and the same effect as in the above embodiment can be achieved.

以上のように、この発明によれば発電、機の整流装置の
接続をサイリスタ素子のゲート信号の制御により容易に
三相全波−三相半波切替することができるので、発電機
を大型にすることなく、充分大なる負荷に給電すること
ができる効果がある。As described above, according to the present invention, it is possible to easily switch between three-phase full-wave and three-phase half-wave by controlling the gate signal of the thyristor element to easily switch the connection of the rectifier of the generator and machine, so that the generator can be made larger. This has the effect of being able to supply power to a sufficiently large load without having to do so.

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

第１図はこの発明の一実施例による直ｊｌｔ発電装置の
電気回路図、第２図は第１図に示す回路の動作を説明す
る図、第３図はこの発明の他の実施例を示す直流発電装
置の電気回路図である。 １・・・交流発電機、２　ａ　ｅ　２　ｂ　＋　２　ｃ
・・・三相発電コイル、４・・・整流装置、５　ａ　＋
　５　ｂ　＋　５　ｃ・・・サイリスタ、７・・・ダイ
オード、１０・・・蓄電池、１２・・・負荷。 なお、図中、同一符号は同一、または相当部分を示す。 代理人　大岩増雄 箇　Ｘ　囚 箇　３　因 第２図 デグ昭檄ｌ！！ｌ卑ム壽又（ＩＮ） 手続補止１１：（自発） 摘′許庁長宮殿 １、事件の表示　特Ｊ９１ｊ昭５８−１６２１２８号２
、発明の名称 直流発電装置 ３、補正をする者 事件との関係　１，１°訂出１（ｉ人 代表者片１１１仁八部 ４、代理人 ５、　補正の対象 （１）明細書の特許請求の範囲の欄 （２）明細書の発明の詳細な説明の欄 ６、　補正の内各 （１）　別紙の通υ特許請求の範囲を補正する。 （２）明細書第２頁第１２行目「等公明」とあるのを「
特公昭」と補正する。 （３）　明細書第２頁第１６行目「アンペア」とあるの
を「アンペア」と補正する。 ７、添付書類の目録 補正後の特許請求の範囲を記した書面 １通 以　上 補正後の特許請求の範囲 （１）原動機により駆動され三相Ｙ接続の鈷電コイルを
有する交流発電機の交流出力を直流出力に変換し、蓄電
池及びその他の負荷に給電する直流発電装置において、
上記整流装置の片方の出力端子側の整流素子をサイリス
タで構成し、上記出力端子と三相発電コイルの中性点と
の間にダイオードを接続して、上記交流発電機の出力が
所定値になったときは三相全波整流から三相半波整流へ
の切替をすることを特徴とする直流発電装置。 （２）交流発電機の出力をその出力電流から検知するよ
うにしたことを特徴とする特許請求の範囲第１項記載の
直流発電装置。 （３）交流発電機の出力をその交流発電機又は駆動機関
の回転数から検知するようにしたことを特徴とする特許
請求の範囲第１項記載の直流発電装置。FIG. 1 is an electric circuit diagram of a direct electric generator according to an embodiment of the present invention, FIG. 2 is a diagram explaining the operation of the circuit shown in FIG. 1, and FIG. 3 is a diagram showing another embodiment of the present invention. It is an electric circuit diagram of a DC power generation device. 1...AC generator, 2 a e 2 b + 2 c
... Three-phase generator coil, 4... Rectifier, 5 a +
5 b + 5 c...Thyristor, 7...Diode, 10...Storage battery, 12...Load. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Agent Masuoka Oiwa ! l Himum Jumata (IN) Procedural Supplement 11: (Voluntary) Director General's Palace 1, Incident Indication Special J91j 1984-162128 No. 2
, Name of the invention DC power generator 3, Relationship with the case of the person making the amendment 1, 1° Correction 1 (I person representative piece 111 Jin8 part 4, agent 5, Subject of amendment (1) Patent in the specification Claims column (2) Detailed description of the invention column 6 in the specification, each of the amendments (1) Amend the attached claims in the appendix. (2) Page 2, line 12 of the specification The word ``equivalent'' means ``
Tokkosho,” he corrected. (3) "Ampere" on page 2, line 16 of the specification shall be corrected to "ampere". 7. One or more documents stating the amended scope of claims in the list of attached documents.Scope of amended claims (1) Alternating current of an alternator driven by a prime mover and having a three-phase Y-connected electric coil In a DC power generation device that converts output to DC output and supplies power to storage batteries and other loads,
The rectifying element on one output terminal side of the rectifier is configured with a thyristor, and a diode is connected between the output terminal and the neutral point of the three-phase generator coil, so that the output of the alternator is adjusted to a predetermined value. A direct current power generation device characterized by switching from three-phase full-wave rectification to three-phase half-wave rectification when (2) The DC power generator according to claim 1, wherein the output of the AC generator is detected from its output current. (3) The DC power generator according to claim 1, wherein the output of the AC generator is detected from the rotational speed of the AC generator or the driving engine.

Claims (3)

【特許請求の範囲】[Claims] （１）原動機により駆動され三相Ｙ接続の発電コイルを
有する交流発電機の交流出力を直流出力に変換し、蓄宵
、池及びその他の負荷に給電する直流発電装置において
、上記整流装置の片方の出力端子側の整流素子をサイリ
スタで構成し、上記出力端子と三相発電コイルの中性点
との間にダイオードを接続して、上記交流発電機の出力
が所定値になったときは三相全波整流から三相半波整流
への切替をすることを特徴とする直流発電装置。(1) In a DC power generation device that converts the AC output of an AC generator driven by a prime mover and has a three-phase Y-connected generating coil into DC output, and supplies power to a storage tank, a pond, and other loads, one of the rectifiers The rectifying element on the output terminal side of the AC generator is composed of a thyristor, and a diode is connected between the output terminal and the neutral point of the three-phase generator coil, so that when the output of the AC generator reaches a predetermined value, the A DC power generation device characterized by switching from phase full-wave rectification to three-phase half-wave rectification. （２）交流発電機の出力をその出力電流から検知するよ
うにしたことを特徴とする特許請求の範囲第１項記載の
直流発電装置。(2) The DC power generator according to claim 1, wherein the output of the AC generator is detected from its output current. （３）交流発電機の出力をその又は駆動機関の回転数か
ら検知するようにしたことを特徴とする特許請求の範囲
第１項記載の直流発電装置。(3) The DC power generator according to claim 1, wherein the output of the AC generator is detected from the rotational speed of the AC generator or the driving engine.
JP58162128A 1983-09-01 1983-09-01 Dc generating apparatus Pending JPS6055898A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP58162128A JPS6055898A (en) 1983-09-01 1983-09-01 Dc generating apparatus
DE3432128A DE3432128A1 (en) 1983-09-01 1984-08-31 DC generator unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58162128A JPS6055898A (en) 1983-09-01 1983-09-01 Dc generating apparatus

Publications (1)

Publication Number Publication Date
JPS6055898A true JPS6055898A (en) 1985-04-01

Family

ID=15748570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58162128A Pending JPS6055898A (en) 1983-09-01 1983-09-01 Dc generating apparatus

Country Status (2)

Country Link
JP (1) JPS6055898A (en)
DE (1) DE3432128A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02142399A (en) * 1988-11-21 1990-05-31 Hitachi Ltd Vehicle power supply
JP2010273451A (en) * 2009-05-21 2010-12-02 Ihi Corp Rectifying device
CN105408620A (en) * 2013-08-01 2016-03-16 法雷奥电机设备公司 Method and device for controlling an alternator-starter of a motor vehicle, and corresponding alternator-starter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601207B1 (en) * 1986-07-04 1988-10-21 Valeo POWER SUPPLY ASSEMBLY, ESPECIALLY FOR A MOTOR VEHICLE AND ROTATING ELECTRIC MACHINE FOR SUCH AN ASSEMBLY
WO1988007782A1 (en) * 1987-03-24 1988-10-06 Wolf John V D Electric generator
EP0717490B1 (en) * 1994-12-16 2003-05-21 Delphi Technologies, Inc. Output and torque control of an automotive alternator
US5648705A (en) * 1995-09-05 1997-07-15 Ford Motor Company Motor vehicle alternator and methods of operation
US6239582B1 (en) 1999-11-04 2001-05-29 Satcon Technology Corporation Motor vehicle alternator having a single voltage sensor and a half-wave controlled rectifier bridge for increasing output

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2038643A5 (en) * 1969-03-20 1971-01-08 Citroen Sa
DE3036971A1 (en) * 1980-10-01 1982-05-27 Robert Bosch Gmbh, 7000 Stuttgart Alternator power control for battery charger - has controllable semiconductor switches in rectifier bridge circuit with inductance in series to battery charge line and diode in parallel
IT1144426B (en) * 1981-07-23 1986-10-29 Marelli Autronica ALTERNATOR PARTICULARLY FOR VEHICLES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02142399A (en) * 1988-11-21 1990-05-31 Hitachi Ltd Vehicle power supply
JP2010273451A (en) * 2009-05-21 2010-12-02 Ihi Corp Rectifying device
CN105408620A (en) * 2013-08-01 2016-03-16 法雷奥电机设备公司 Method and device for controlling an alternator-starter of a motor vehicle, and corresponding alternator-starter

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DE3432128A1 (en) 1985-03-28

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