JPS6346253B2 - - Google Patents
Info
- Publication number
- JPS6346253B2 JPS6346253B2 JP59043349A JP4334984A JPS6346253B2 JP S6346253 B2 JPS6346253 B2 JP S6346253B2 JP 59043349 A JP59043349 A JP 59043349A JP 4334984 A JP4334984 A JP 4334984A JP S6346253 B2 JPS6346253 B2 JP S6346253B2
- Authority
- JP
- Japan
- Prior art keywords
- inverter
- rotation speed
- output
- voltage
- gasoline engine
- 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.)
- Expired
Links
- 239000000446 fuel Substances 0.000 claims description 22
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、同期発電機により発生される交流出
力を整流して得られる直流をさらにインバータに
より交流に変換して負荷に供給するインバータ式
携帯用発電機に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an inverter-type portable device that rectifies the AC output generated by a synchronous generator, converts the DC obtained by rectifying the AC output into AC using an inverter, and supplies the AC to a load. It concerns generators.
従来、たとえば、特開昭58−68945号公報等に
示すように、この種の発電機は非常用設備などに
多く用いられているが、同期発電機は負荷条件に
関係なく所定回転数のガソリンエンジンによつて
駆動され、出力周波数や出力電圧はインバータの
制御回路によつて制御されている。
Conventionally, this type of generator has been widely used in emergency equipment, as shown in Japanese Patent Application Laid-Open No. 58-68945, etc., but synchronous generators generate gasoline at a predetermined rotational speed regardless of load conditions. It is driven by an engine, and its output frequency and output voltage are controlled by an inverter control circuit.
このため、ガソリンエンジンは部分負荷時にも
全負荷時と同様の燃料消費で運転され、燃料消費
に無駄が生じるものとなつていた。 For this reason, gasoline engines operate with the same fuel consumption during partial load as when full load, resulting in wasteful fuel consumption.
本発明は、この種の発電機の出力電圧や出力周
波数はガソリンエンジンの回転数とは独立してイ
ンバータによつて制御されるため、ガソリンエン
ジンの回転数は出力電圧や出力周波数と無関係に
選択できるという点に着目し、ガソリンエンジン
を最小燃費で運転し、燃費の低下を図ることがで
きるインバータ式携帯用発電機を提供することを
目的とする。
In the present invention, the output voltage and output frequency of this type of generator are controlled by the inverter independently of the rotation speed of the gasoline engine, so the rotation speed of the gasoline engine can be selected independently of the output voltage and output frequency. The present invention aims to provide an inverter type portable generator that can operate a gasoline engine with minimum fuel consumption and reduce fuel consumption.
〔発明の概要〕
本発明は負荷電流を検出し、その負荷電流にお
ける燃費が最小となるようにガソリンエンジンの
スロツトル開度を自動的に変化させるように構成
したものである。[Summary of the Invention] The present invention is configured to detect a load current and automatically change the throttle opening of a gasoline engine so that the fuel consumption at that load current is minimized.
第１図は本発明の一実施例を示すブロツク図で
あり、１は発電機電機子に巻装された出力用電機
子線輪、２は永久磁石界磁極、３は整流器３ａよ
りなるコンバータ、４はリツプル平滑用コンデン
サ、５はインバータ、６は出力端子、７は電圧検
出用変圧器、８は整流器、９はインバータ５を制
御する制御回路で、電流制御回路、自動電圧調整
回路、正弦波発生回路、三角波発生回路、PWM
変調回路により構成されている。１０は発電機１
を駆動するエンジン、１１はスロツトルバルブ、
１２は出力電流を検出する変流器、１３は整流
器、１４はステツピングモータ、１５は回転数セ
ンサ、１６は自動回転数制御回路である。
FIG. 1 is a block diagram showing an embodiment of the present invention, in which 1 is an output armature wire wound around a generator armature, 2 is a permanent magnet field pole, 3 is a converter consisting of a rectifier 3a, 4 is a ripple smoothing capacitor, 5 is an inverter, 6 is an output terminal, 7 is a voltage detection transformer, 8 is a rectifier, 9 is a control circuit that controls the inverter 5, including a current control circuit, an automatic voltage adjustment circuit, and a sine wave Generation circuit, triangular wave generation circuit, PWM
It consists of a modulation circuit. 10 is generator 1
11 is the throttle valve,
12 is a current transformer for detecting the output current, 13 is a rectifier, 14 is a stepping motor, 15 is a rotation speed sensor, and 16 is an automatic rotation speed control circuit.
次に、このような構成における動作を説明す
る。まず、出力用電機子線輪１がエンジン１０に
よつて駆動される永久磁石界磁極２の磁束を切る
と、線輪１に３相交流電圧が発生するようにな
る。この３相交流電圧はコンバータ３で整流され
た後、リツプル平滑用コンデンサ４により脈流の
少ない直流電圧に変換される。この直流電圧はイ
ンバータ５により交流に変換され、必要とする単
相交流出力が出力端子６より出力される。一方、
電圧検出用変圧器７で検出された出力電圧は整流
器８で整流され制御回路９にフイードバツクされ
る。そして、この制御回路９内の電圧制限回路を
経て自動電圧調整回路内で設定された電圧設定値
と比較され、出力電圧が一定となるように正弦波
発生回路の正弦波電圧を制御し、PWM変調回路
を介してインバータ５に対するPWM制御が行わ
れる。これにより、出力交流電圧は一定値に制御
される。 Next, the operation in such a configuration will be explained. First, when the output armature coil 1 cuts the magnetic flux of the permanent magnet field pole 2 driven by the engine 10, a three-phase AC voltage is generated in the coil 1. This three-phase AC voltage is rectified by a converter 3, and then converted to a DC voltage with less ripple by a ripple smoothing capacitor 4. This DC voltage is converted to AC by an inverter 5, and the required single-phase AC output is output from an output terminal 6. on the other hand,
The output voltage detected by the voltage detection transformer 7 is rectified by a rectifier 8 and fed back to a control circuit 9. Then, through the voltage limiting circuit in the control circuit 9, it is compared with the voltage setting value set in the automatic voltage adjustment circuit, and the sine wave voltage of the sine wave generator circuit is controlled so that the output voltage is constant, and the PWM PWM control is performed on the inverter 5 via the modulation circuit. Thereby, the output AC voltage is controlled to a constant value.
第２図は携帯発電機に使用されるエンジンの出
力、回転数、燃料消費率の関係を示す図である。
第２図において、a1は無負荷において回転数を
4000rpmにセツトし、徐々に負荷を増加した場合
の回転数と出力の関係を示している。次に、a2，
a3……は、同様にして無負荷での回転数を
3800rpm、3600rpm……と順次変えた場合の回転
数と出力との関係を示している。そこで、曲線
a1，a2，a3……上に燃費が1000gr／sphrの点A11，
A21，A31……をプロツトしこれらを結ぶと、
1000gr／sphrの等燃費曲線が得られる。 FIG. 2 is a diagram showing the relationship among the output, rotation speed, and fuel consumption rate of an engine used in a portable generator.
In Figure 2, a 1 is the number of revolutions under no load.
It shows the relationship between rotation speed and output when the engine is set at 4000 rpm and the load is gradually increased. Next, a 2 ,
a 3 … is the number of revolutions under no load in the same way.
It shows the relationship between rotation speed and output when changing sequentially to 3800rpm, 3600rpm... So, the curve
a 1 , a 2 , a 3 ... Point A 11 with fuel efficiency of 1000gr/sphr above,
If we plot A 21 , A 31 ... and connect them, we get
An isofuel consumption curve of 1000gr/sphr is obtained.
同様にして800gr／sphrの点A12，A22，A32…
…をプロツトし、それ等を結ぶと800gr／sphrの
等燃費曲線が得られ、同様に400gr／sphr、
350gr／sphr、300gr／sphrの等燃費曲線，，
が得られる。 Similarly, 800gr/sphr points A 12 , A 22 , A 32 ...
If you plot... and connect them, you will get an equal fuel consumption curve of 800gr/sphr, and similarly, 400gr/sphr,
Equal fuel consumption curves of 350gr/sphr and 300gr/sphr,,
is obtained.
ところで単位時間当りの燃料消費量は燃料と出
力との積で表される。従つて、同一燃費で最も燃
料消費量の少ない点は横軸に平行な等燃費曲線の
接線の接点B1，B2，……B9，B10である。これ等
の接点B1〜B10を結んで出来る曲線ｂが最低燃料
消費量で運転可能な無負荷設定回転数を設定する
曲線である。すなわち、点B1における出力P1に
対する無負荷設定回転数は、点B1を通る出力曲
線P1の無負荷時の点N1によつて表される。同様
にして出力P2，P3……P9，P10に対する無負荷設
定回転数は、N2，N3……N9，N10によつて表さ
れる。この関係は第３図においてP1，P2……P9，
P10とN1，N2……N9，N10との各々の交点D1，
D2……D9，D10を結んで成る曲線ｄによつて表さ
れる。一方、実施例においては、制御回路９内の
自動電圧調整回路により出力電圧は負荷電流の如
何にかかわらず常に一定に保たれるので出力電力
と出力電流とは１：１の対応関係がある。従つ
て、エンジン出力の検出は出力電流の検出に置き
換えることが可能である。従つて、変流器１３に
よつて出力電流を検出し、第３図の曲線ｄに従つ
て出力電流Lに対応する回転数Ｎの値になるよ
うなスロツトルバルブ１１の開度を設定する制御
を行うことにより、エンジン１０を最低燃費で運
転することが出来る。 By the way, fuel consumption per unit time is expressed as the product of fuel and output. Therefore, the points with the lowest fuel consumption for the same fuel efficiency are the tangent points B 1 , B 2 , ...B 9 , B 10 of the tangent to the equal fuel consumption curve parallel to the horizontal axis. A curve b formed by connecting these contact points B 1 to B 10 is a curve that sets the no-load setting rotation speed that allows operation at the minimum fuel consumption. That is, the no-load set rotation speed for the output P 1 at the point B 1 is represented by the no-load point N 1 of the output curve P 1 passing through the point B 1 . Similarly, the no-load setting rotation speeds for the outputs P 2 , P 3 . . . P 9 , P 10 are expressed by N 2 , N 3 . This relationship is shown in Figure 3 as P 1 , P 2 ...P 9 ,
Each intersection D 1 of P 10 and N 1 , N 2 ...N 9 , N 10 ,
D 2 ... is represented by a curve d connecting D 9 and D 10 . On the other hand, in the embodiment, since the output voltage is always kept constant regardless of the load current by the automatic voltage adjustment circuit in the control circuit 9, there is a 1:1 correspondence between the output power and the output current. Therefore, detection of engine output can be replaced with detection of output current. Therefore, the output current is detected by the current transformer 13, and the opening degree of the throttle valve 11 is set so that the rotation speed N corresponds to the output current L according to the curve d in FIG. By performing the control, the engine 10 can be operated with the lowest fuel efficiency.
すなわち、自動回転数制御回路１６内に第３図
の曲線ｄのデータを記憶したメモリを設けてお
き、変流器１２によつて検出した現在の出力電流
に対応した回転数データ（N1〜N10）を前記メモ
リから読出し、この回転数データと回転数センサ
１５によつて検出した回転数との差を求め、その
差が零になるようにステツピングモータ１４を介
してスロツトルバルブ１１を駆動することによ
り、エンジン１０を最低燃費で運転することがで
きる。 That is, a memory storing the data of the curve d in FIG. 3 is provided in the automatic rotation speed control circuit 16, and the rotation speed data (N 1 ~ N10 ) is read from the memory, the difference between this rotational speed data and the rotational speed detected by the rotational speed sensor 15 is determined, and the throttle valve 11 is controlled via the stepping motor 14 so that the difference becomes zero. By driving the engine 10, the engine 10 can be operated with the lowest fuel efficiency.
なお、スロツトルバルブ１１はエンコーダ付の
直流モータによつて駆動するようにしてもよい。 Note that the throttle valve 11 may be driven by a DC motor equipped with an encoder.
以上の説明から明らかなように本発明によれ
ば、エンジンは負荷電流の大小にかかわらず常に
最低燃費の点で運転されるために、燃費の低下を
図れるという効果がある。また、部分負荷時に無
負荷設定回転数が低下するため騒音も低減できる
という効果がある。
As is clear from the above description, according to the present invention, the engine is always operated at the lowest fuel efficiency regardless of the magnitude of the load current, and therefore has the effect of reducing fuel consumption. Furthermore, since the no-load set rotation speed is reduced during partial load, noise can also be reduced.
第１図は本発明の一実施例を示すブロツク図、
第２図はエンジンの出力、回転数、燃費の関係を
示す線図、第３図はエンジンを最低燃費で運転す
るための無負荷設定回転数と出力の関係を示す線
図である。
１……出力用電機子線輪、３……コンバータ、
５……インバータ、９……制御回路、１０……エ
ンジン、１１……スロツトルバルブ、１２……変
流器、１４……ステツピングモータ、１５……回
転数センサ、１６……自動回転数制御回路。
FIG. 1 is a block diagram showing one embodiment of the present invention;
FIG. 2 is a diagram showing the relationship between engine output, engine speed, and fuel consumption, and FIG. 3 is a diagram showing the relationship between no-load set engine speed and output for operating the engine at the lowest fuel efficiency. 1... Output armature coil, 3... Converter,
5... Inverter, 9... Control circuit, 10... Engine, 11... Throttle valve, 12... Current transformer, 14... Stepping motor, 15... Rotation speed sensor, 16... Automatic rotation speed control circuit.
Claims (1)
電機と、同期発電機出力電圧を直流電圧に変換す
る整流回路と、整流回路出力電圧を交流電圧に変
換するインバータと、インバータの出力電圧を所
定電圧に制御する制御回路とを備えたインバータ
式携帯用発電機において、前記インバータの出力
電流を検出する変流器と、前記ガソリンエンジン
の回転数を検出する回転数検出器と、前記ガソリ
ンエンジンのスロツトル弁開度を調整する弁開度
制御手段と、各種負荷電流条件における前記イン
バータの出力電流に対し前記ガソリンエンジンの
燃費が最小となる回転データを記憶したメモリを
有し、前記変流器出力信号により現在の負荷電流
条件に対する回転数データを求め、前記回転数検
出器で検出されるガソリンエンジンの回転数がこ
の回転数データに対応する値となるように前記弁
開度制御手段を駆動する回転数制御回路とを設け
て成るインバータ式携帯用発電機。 ２ 弁開度制御手段はステツピングモータにより
構成したことを特徴とする特許請求の範囲第１項
記載のインバータ式携帯用発電機。 ３ 弁開度制御手段はエンコーダを有する直流モ
ータによつて構成したことを特徴とする特許請求
の範囲第１項記載のインバータ式携帯用発電機。[Claims] 1. A synchronous generator driven by a gasoline engine, a rectifier circuit that converts the output voltage of the synchronous generator into a DC voltage, an inverter that converts the output voltage of the rectifier circuit into an AC voltage, and an inverter. An inverter-type portable generator comprising a control circuit that controls an output voltage to a predetermined voltage, a current transformer that detects the output current of the inverter, a rotation speed detector that detects the rotation speed of the gasoline engine, a valve opening control means for adjusting a throttle valve opening of the gasoline engine; and a memory storing rotation data that minimizes the fuel consumption of the gasoline engine with respect to the output current of the inverter under various load current conditions; The rotation speed data for the current load current condition is obtained from the current transformer output signal, and the valve opening degree is controlled so that the rotation speed of the gasoline engine detected by the rotation speed detector becomes a value corresponding to this rotation speed data. An inverter-type portable generator comprising a rotation speed control circuit for driving the means. 2. The inverter-type portable generator according to claim 1, wherein the valve opening control means is constituted by a stepping motor. 3. The inverter-type portable generator according to claim 1, wherein the valve opening degree control means is constituted by a DC motor having an encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59043349A JPS60187721A (en) | 1984-03-07 | 1984-03-07 | Inverter type portable generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59043349A JPS60187721A (en) | 1984-03-07 | 1984-03-07 | Inverter type portable generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60187721A JPS60187721A (en) | 1985-09-25 |
| JPS6346253B2 true JPS6346253B2 (en) | 1988-09-14 |
Family
ID=12661368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59043349A Granted JPS60187721A (en) | 1984-03-07 | 1984-03-07 | Inverter type portable generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60187721A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003028071A (en) * | 2001-07-18 | 2003-01-29 | Hitachi Constr Mach Co Ltd | Drive control device for hybrid construction machine, hybrid construction machine and drive control program therefor |
| JP2013164023A (en) * | 2012-02-10 | 2013-08-22 | Hokuetsu Kogyo Co Ltd | Control method of engine-driven type inverter generator and engine-driven type inverter generator |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0828999B2 (en) * | 1987-04-07 | 1996-03-21 | 東洋電産株式会社 | Automotive power generation mechanism |
| JP2558478B2 (en) * | 1987-10-21 | 1996-11-27 | 東洋電産株式会社 | Automotive power generation mechanism |
| JPH0226400U (en) * | 1988-08-04 | 1990-02-21 | ||
| JPH0294499U (en) * | 1989-01-12 | 1990-07-26 | ||
| JPH03131917A (en) * | 1989-10-18 | 1991-06-05 | Canon Inc | Electronic apparatus |
| GB9408678D0 (en) * | 1994-04-30 | 1994-06-22 | Aisin Seiki | Gas turbine engine driven auxilliary electric power unit |
| US6118186A (en) * | 1994-09-14 | 2000-09-12 | Coleman Powermate, Inc. | Throttle control for small engines and other applications |
| US5705917A (en) * | 1994-09-14 | 1998-01-06 | Coleman Powermate, Inc. | Light weight machine with rotor employing permanent magnets and consequence poles |
| US5929611A (en) * | 1994-09-14 | 1999-07-27 | Coleman Powermate, Inc. | Light weight rotor and stator with multiple coil windings in thermal contact |
| JP2003102199A (en) | 2001-07-19 | 2003-04-04 | Yamaha Motor Co Ltd | Inverter system generator |
| JP4082657B2 (en) | 2001-07-19 | 2008-04-30 | ヤマハモーターパワープロダクツ株式会社 | Inverter generator |
| JP2006217780A (en) | 2005-02-07 | 2006-08-17 | Yamaha Motor Co Ltd | Inverter ac power plant |
-
1984
- 1984-03-07 JP JP59043349A patent/JPS60187721A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003028071A (en) * | 2001-07-18 | 2003-01-29 | Hitachi Constr Mach Co Ltd | Drive control device for hybrid construction machine, hybrid construction machine and drive control program therefor |
| JP2013164023A (en) * | 2012-02-10 | 2013-08-22 | Hokuetsu Kogyo Co Ltd | Control method of engine-driven type inverter generator and engine-driven type inverter generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60187721A (en) | 1985-09-25 |
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