JPH0534215Y2 - - Google Patents
Info
- Publication number
- JPH0534215Y2 JPH0534215Y2 JP1986111402U JP11140286U JPH0534215Y2 JP H0534215 Y2 JPH0534215 Y2 JP H0534215Y2 JP 1986111402 U JP1986111402 U JP 1986111402U JP 11140286 U JP11140286 U JP 11140286U JP H0534215 Y2 JPH0534215 Y2 JP H0534215Y2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- synchronous generator
- diesel engine
- rotor
- harmonic
- 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 - Lifetime
Links
- 230000001360 synchronised effect Effects 0.000 claims description 32
- 230000000694 effects Effects 0.000 claims description 17
- 238000010248 power generation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
【考案の詳細な説明】
Ａ 産業上の利用分野
本考案はデイーゼルエンジン発電装置に関し、
同期発電機の回転子のはずみ車効果（フライホー
ル効果）が低減されるように企図したものであ
る。[Detailed description of the invention] A. Industrial application field The present invention relates to a diesel engine power generation device.
This is intended to reduce the flywheel effect (flyhole effect) of the rotor of a synchronous generator.
Ｂ 考案の概要
同期発電機の固有振動数を、デイーゼルエンジ
ンの強制振動数の基本波の周波数と第１次高調波
との間に設定したことにより、同期発電機の回転
子のはずみ車効果を減少させて回転子の重量の軽
減を行うことができるようにしたものである。B. Summary of the idea By setting the natural frequency of the synchronous generator between the frequency of the fundamental wave and the first harmonic of the forced frequency of the diesel engine, the flywheel effect of the rotor of the synchronous generator is reduced. This makes it possible to reduce the weight of the rotor.
なお、デイーゼルエンジンの強制振動数とは、
デイーゼルエンジンによる回転数の逆数である。 Furthermore, the forced vibration frequency of a diesel engine is
It is the reciprocal of the number of revolutions made by a diesel engine.
Ｃ 従来の技術
この種の発電装置は、デイーゼルエンジンの強
制振動数と同期発電機の固有振動数とが一致する
と、発電装置に共振等が生じる不都合があつた。
そして、このような不都合を解決するために、従
来は同期発電機の固有振動数をデイーゼルエンジ
ンの強制振動数の基本周波数より低い周波数に設
定して、デイーゼルエンジンの強制振動数と同期
発電機の固有振動数とが一致しないように構成さ
れていた。前記のように同期発電機の固有振動数
をデイーゼルエンジンの強制振動数の基本周波数
より低くするには、同期発電機の回転子のはずみ
車効果を大きくする必要があり、このためには回
転子の重量を重くする必要があつた。C. PRIOR ART This type of power generation device has the disadvantage that when the forced frequency of the diesel engine and the natural frequency of the synchronous generator match, resonance or the like occurs in the power generation device.
In order to solve this problem, conventionally the natural frequency of the synchronous generator is set to a lower frequency than the fundamental frequency of the forced frequency of the diesel engine, so that the forced frequency of the diesel engine and the synchronous generator are It was constructed so that the natural frequencies did not match. As mentioned above, in order to make the natural frequency of the synchronous generator lower than the fundamental frequency of the forced frequency of the diesel engine, it is necessary to increase the flywheel effect of the rotor of the synchronous generator. I needed to add weight.
Ｄ 考案が解決しようとする問題点
上記したように同期発電機の回転子のはずみ車
効果が大きい場合は回転子の重量が大きくなり、
特に低回転速度の大型発電機の場合は、回転子の
はずみ車効果がより大きくなるので回転子の重量
よりも重くする必要があつた。このように、回転
子の重量が重くなるとその外径等も大きくなるの
で発電機全体が大形になる問題点があつた。ま
た、回転子を支える軸受も重量の重い回転子を支
えるために強固にする必要があり、コストが高く
なる等の問題点があつた。D Problems that the invention aims to solve As mentioned above, when the flywheel effect of the rotor of a synchronous generator is large, the weight of the rotor becomes large.
Particularly in the case of large generators with low rotational speeds, the flywheel effect of the rotor becomes greater, so it is necessary to make the generator heavier than the rotor. As described above, as the weight of the rotor increases, its outer diameter also increases, resulting in the problem that the generator as a whole becomes larger. Furthermore, the bearings that support the rotor need to be made strong to support the heavy rotor, resulting in problems such as increased cost.
本考案は上記した問題点を解決する目的でなさ
れ、同期発電機の回転子のはずみ車効果を減少さ
せて回転子の重量の軽減を図ることができるデイ
ーゼルエンジン発電装置を提供しようとするもの
である。 The present invention has been made in order to solve the above-mentioned problems, and aims to provide a diesel engine power generation device that can reduce the flywheel effect of the rotor of a synchronous generator and reduce the weight of the rotor. .
Ｅ 問題点を解決するための手段
前記問題点を解決する本考案に係るデイーゼル
エンジン発電装置は、デイーゼルエンジン１と、
それにより回転駆動される同期発電機３を有し、
同期発電機３は、その固有振動数Ｆが、直径ま
たは質量が調整された回転子５のはずみ車効果に
より、前記デイーゼルエンジン１による回転数の
逆数である強制振動数の基本波F0の周波数とそ
の第１次高調波F1との間に設定されたものであ
る。E Means for Solving the Problems The diesel engine power generation device according to the present invention that solves the above problems includes a diesel engine 1,
The synchronous generator 3 has a synchronous generator 3 that is rotationally driven by the synchronous generator 3, and the synchronous generator 3 has a natural frequency F that is lower than the rotational speed of the diesel engine 1 due to the flywheel effect of the rotor 5 whose diameter or mass is adjusted. This is set between the frequency of the fundamental wave F 0 of the forced frequency, which is the reciprocal, and its first harmonic F 1 .
Ｆ 実施例
以下、本考案を図示の一実施例により詳細に説
明する。F. Embodiment Hereinafter, the present invention will be explained in detail with reference to an illustrated embodiment.
第２図は本考案の一実施例に係るデイーゼルエ
ンジン発電装置を示す一部破断概略図である。こ
の図に示すように、デイーゼルエンジン１の回転
軸２に同期発電機３の軸４が連結されている。そ
して、デイーゼルエンジン１を駆動させることに
より、同期発電機３の軸４に設けた円筒状の回転
子５も一体に回転する。尚、６は回転子５の周囲
に所定の間隙で配した固定子である。 FIG. 2 is a partially cutaway schematic diagram showing a diesel engine power generator according to an embodiment of the present invention. As shown in this figure, a shaft 4 of a synchronous generator 3 is connected to a rotating shaft 2 of a diesel engine 1. By driving the diesel engine 1, the cylindrical rotor 5 provided on the shaft 4 of the synchronous generator 3 also rotates together. Note that 6 is a stator arranged around the rotor 5 with a predetermined gap.
また、このように構成された同期発電機３の固
有振動数Ｆと、回転子５のはずみ車効果の関係
は、
となる。ここでＮは同期発電機３の回転速度
（rpm）、Prは同期発電機３の同期化力（Kw／
rad）、GD2ははずみ車効果（Kg・m2）、は発電
機３の出力電流周波数（Hz）である。つまり、(1)
式より、Ｆは１／√2に比例するので同期発電
機３の固有振動数Ｆを高めることは回転子５のは
ずみ車効果を減ずることにほかならない。従つ
て、第１図に示すように、同期発電機３の固有振
動数Ｆをデイーゼルエンジン１の強制振動数（回
転数の逆数）の基本波F0の周波数とその第１次
高調波F1との間に設定することによつて、固有
振動数Ｆが高くなり回転子５のはずみ車効果を減
少させることができる。尚、F′は従来の同期発電
機の固有振動数である。 Further, the relationship between the natural frequency F of the synchronous generator 3 configured in this way and the flywheel effect of the rotor 5 is as follows. becomes. Here, N is the rotation speed (rpm) of the synchronous generator 3, and Pr is the synchronization power (Kw/
rad), GD 2 is the flywheel effect (Kg·m 2 ), and is the output current frequency (Hz) of the generator 3. That is, (1)
From the formula, F is proportional to 1/√ 2 , so increasing the natural frequency F of the synchronous generator 3 is nothing but reducing the flywheel effect of the rotor 5. Therefore, as shown in FIG. 1, the natural frequency F of the synchronous generator 3 is the frequency of the fundamental wave F 0 of the forced frequency (reciprocal of the rotational speed) of the diesel engine 1 and its first harmonic F 1 By setting it between , the natural frequency F becomes high and the flywheel effect of the rotor 5 can be reduced. Note that F' is the natural frequency of the conventional synchronous generator.
上述した知見を基にして、本実施例では、同期
発電機３の固有振動数Ｆが、デイーゼルエンジン
１の強制振動数の基本波F0の周波数と第１次高
調波F1との間に設定されるように、回転子５の
はずみ車効果GD2が調整されている。具体的には
回転子５の質量Ｇや直径Ｄが調整されている。こ
のように同期発電機３の固有振動数Ｆが、デイー
ゼルエンジン１の強制振動数の基本波F0の周波
数と第１次高調波F1との間に設定されているの
で、共振の発生を防止できる。しかもこのとき回
転子５の調整は、従来に比べ、質量Ｇや直径Ｄを
小さくしてはずみ車効果を低減する調整であるた
め、装置として小型・軽量となる。 Based on the above knowledge, in this embodiment, the natural frequency F of the synchronous generator 3 is between the frequency of the fundamental wave F 0 and the first harmonic F 1 of the forced frequency of the diesel engine 1. The flywheel effect GD 2 of the rotor 5 is adjusted as set. Specifically, the mass G and diameter D of the rotor 5 are adjusted. In this way, the natural frequency F of the synchronous generator 3 is set between the frequency of the fundamental wave F 0 of the forced frequency of the diesel engine 1 and the first harmonic F 1 , so that resonance can be prevented from occurring. It can be prevented. Moreover, the adjustment of the rotor 5 at this time is to reduce the flywheel effect by reducing the mass G and diameter D compared to the conventional one, so the device becomes smaller and lighter.
本実施例ではデイーゼルエンジン１の強制振動
数の基本波F0と第１次高調波F1との間が一番広
いので、同期発電機３の固有振動数Ｆの設定はこ
の範囲が最適である。尚、基本波F0の第２次高
調波F2と第３次高調波F3、…第ｎ−１次高調波
Fo-1と第ｎ次（ｎは整数）高調波Foとの間は、基
本波F0と第１次高調波F1との間に比べて大幅に
狭くなるので、同期発電機３の固有振動数Ｆをこ
の範囲に設定することは不適当である。つまり、
デイーゼルエンジン１の回転数の変動等によつて
同期発電機３の固有振動数Ｆが第ｎ次高調波Fo
と一致すると、デイーゼルエンジン発電装置に共
振等の不都合が生じるからである。 In this embodiment, the range between the fundamental wave F 0 and the first harmonic F 1 of the forced frequency of the diesel engine 1 is the widest, so this range is optimal for setting the natural frequency F of the synchronous generator 3. be. Furthermore, the second harmonic F 2 and the third harmonic F 3 of the fundamental wave F 0 are the n-1st harmonic.
The distance between F o-1 and the nth (n is an integer) harmonic F o is much narrower than between the fundamental wave F 0 and the first harmonic F 1 , so the synchronous generator 3 It is inappropriate to set the natural frequency F of in this range. In other words,
Due to fluctuations in the rotation speed of the diesel engine 1, etc., the natural frequency F of the synchronous generator 3 changes to the nth harmonic F o
If they match, problems such as resonance will occur in the diesel engine generator.
Ｇ 考案の効果
以上実施例とともに具体的に説明したように本
考案によれば、同期発電機の固有振動数をデイー
ゼルエンジンの強制振動数の基本波の周波数と第
１次高調波との間に設定した構成により、同期発
電機の回転子のはずみ車効果を減少させて回転子
の重量の軽減を図ることができる。従つて回転子
を小形、軽量にすることができるのでその軸受の
負担も軽減され、発電装置全体の小型化及び軽量
化を図ることができ、更にコストの低減も図るこ
とができる。G. Effects of the invention As specifically explained above with the embodiments, according to the invention, the natural frequency of the synchronous generator is set between the frequency of the fundamental wave and the first harmonic of the forced frequency of the diesel engine. With the set configuration, it is possible to reduce the flywheel effect of the rotor of the synchronous generator and reduce the weight of the rotor. Therefore, since the rotor can be made smaller and lighter, the load on its bearings can be reduced, and the entire power generation device can be made smaller and lighter, and the cost can also be reduced.
第１図は本考案に係る同期発電機の固有振動数
の設定位置を示す説明図、第２図は本考案にかか
るデイーゼルエンジン発電装置の一部破断概略図
である。
図面中、１はデイーゼルエンジン、３は同期発
電機、５は回転子、F0は基本波、Ｆは固有振動
数、F1は第１次高調波である。
FIG. 1 is an explanatory diagram showing the setting position of the natural frequency of the synchronous generator according to the present invention, and FIG. 2 is a partially cutaway schematic diagram of the diesel engine generator according to the present invention. In the drawing, 1 is a diesel engine, 3 is a synchronous generator, 5 is a rotor, F 0 is a fundamental wave, F is a natural frequency, and F 1 is a first harmonic.
Claims (1)
される同期発電機３を有し、 同期発電機３は、その固有振動数Ｆが、直径ま
たは質量が調整された回転子５のはずみ車効果に
より、前記デイーゼルエンジン１による回転数の
逆数である強制振動数の基本波F0の周波数とそ
の第１次高調波F1との間に設定されたものであ
る デイーゼルエンジン発電装置。[Claims for Utility Model Registration] It has a diesel engine 1 and a synchronous generator 3 rotationally driven by the diesel engine 1. The synchronous generator 3 has a rotor 5 whose natural frequency F is adjusted in diameter or mass. Due to the flywheel effect, the frequency of the fundamental wave F 0 of the forced frequency which is the reciprocal of the number of rotations by the diesel engine 1 is set between the frequency of the fundamental wave F 0 and its first harmonic F 1 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986111402U JPH0534215Y2 (en) | 1986-07-22 | 1986-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986111402U JPH0534215Y2 (en) | 1986-07-22 | 1986-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6321463U JPS6321463U (en) | 1988-02-12 |
| JPH0534215Y2 true JPH0534215Y2 (en) | 1993-08-30 |
Family
ID=30991293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986111402U Expired - Lifetime JPH0534215Y2 (en) | 1986-07-22 | 1986-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0534215Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54111603A (en) * | 1978-02-20 | 1979-09-01 | Hitachi Ltd | Electric blower for suction cleaner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54124903U (en) * | 1978-02-21 | 1979-08-31 |
-
1986
- 1986-07-22 JP JP1986111402U patent/JPH0534215Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54111603A (en) * | 1978-02-20 | 1979-09-01 | Hitachi Ltd | Electric blower for suction cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6321463U (en) | 1988-02-12 |
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