JPS5917854A - Synchronous machine - Google Patents

Abstract

PURPOSE:To improve the safety of the operation of a synchronous machine which has poles of raised shape by providing interpoles between main poles of the machine and reducing the armature reaction by superposing the magnetic fluxes of the main poles and interpoles, thereby preventing the stepping-out of synchronization. CONSTITUTION:Interpoles 2, 2', on which pole field coils 2a, 2a' are wound, are provided between main poles 1, 1', on which main pole field coils 1a, 1a' of raised shape are wound. The magnetic flux distribution only by the poles 1, 1' becomes as designated by 3, and the magnetic flux distribution only by the interpoles 2, 2' become as designated by 4, 4'. The resulting magnetic flux distribution of both becomes as designated by broken line 5, and the center of the distribution is displaced rightwardly of the drawing. In this manner, it becomes the distribution adapted for cancelling the armature reaction, thereby preventing the stepping-out of synchronization to improve the safety of the operation.

Description

【発明の詳細な説明】 この発明は同期機における研極励研に関する。[Detailed description of the invention] The present invention relates to a sharpening mechanism for a synchronous machine.

一般に同期様にあっては同期はずれ（脱調）という特有
の好ましくない問題点を抱えている。すなわち回転に伴
って電機子ＩＦ流、によりてその起磁力のため＋／Ｃτ
機子磁束子磁束し、これが主極界磁巻線による主Ｓ束に
合成されて種々の現象を弓１起こす所謂電機子反作用に
より有効磁束が減少し、同期はずれを起こし易くなる。In general, synchronization has a unique and undesirable problem of loss of synchronization (step-out). In other words, due to the armature IF flow as it rotates, due to its magnetomotive force, +/Cτ
The armature magnetic flux is combined with the main S flux from the main pole field winding, causing various phenomena, resulting in a so-called armature reaction, which reduces the effective magnetic flux and makes it easy to lose synchronization.

この同期はずれを防止し・運転の安定度を増す手段とし
て従来は主極の励磁を増加するなどの方法が採られてい
た。Conventionally, methods such as increasing the excitation of the main pole have been adopted as a means to prevent this synchronization and increase the stability of operation.

このため励磁装置は大幅な出力増加を余儀なくされてい
た。またこの場合励磁が突変したとき、主極のりアクタ
ンスが大きいため時定数も大きくなり随って応答性も鈍
くなるという欠ｐも持っていた。For this reason, the exciter has been forced to significantly increase its output. In addition, in this case, when the excitation suddenly changes, the main pole actance is large, so the time constant is also large, and the response is also slow.

この発明は上述の欠点を除去して運転の安定度を高くシ
、応答性も速くしてかつ励磁容量も小さくて済むような
同期機を掃供することを目的とする。The object of the present invention is to provide a synchronous machine that eliminates the above-mentioned drawbacks, has high operational stability, quick response, and requires only a small excitation capacity.

この発明によれば上記目的は、凸極型の磁極を有する同
期機において、互に隣り合う主極と主極との間に補極を
もうけて、主極の磁束と補極の磁束とを郭胃・させるよ
うに主極と補極とを励磁することによって達成されろ。According to the present invention, the above object is achieved by providing a commutating pole between two adjacent main poles in a synchronous machine having convex magnetic poles, so as to separate the magnetic flux of the main pole and the magnetic flux of the commutating pole. This is accomplished by energizing the dominant and complementary poles to cause the gastrointestinal tract.

以下この発明の実施例を図面に基づいて説明する。芭１
図はこの発明の一実施例である同期機の磁極部分の展開
図である。ｊ、　、　１’　　は従来からある主極であ
って、主極と主事との極間に補極２．２′を設けた゛、
ものである。１　ａ　、　１　ａ’　は主極界磁巻線、
２ａ、２ｓ’　は補極界磁巻線を示す。このように配置
された磁極における磁束分布を第２図に示す０すなわち
従来の主極１，１′の入による磁束分布は曲線３で示さ
れ、今回新しく設けた補極２．２′　　のみＫよる磁束
分布は曲線４，４′で示される。この磁束分４を合成す
ると本発゛明による同期機における８束分布になるので
、面線３に１１１＋　Ｋθ４．４′を合成するとＰＬ線
で示す曲線５が祷られる。すなわちこのｌ′ＩｉＩ線５
で堆層できることは本発明の同期機における磁束分布は
磁束の中心が図において右妬ずれた姿となる。つまりこ
の状態を１電機子反作用を打消すのに都合のよいずれ方
をし′〔いる。この様にして電機子反作用が少なくなり
１■こ述べたｂｙ電機子反作用ら生ずる悪現象が少くな
る。また第３図でそのヘクトルを示す。５は端子電圧を
示し、６゜６′は電機子反作用り７クタンスで、７，７
′は内部同期リアクタンス電圧である。央線（６，７）
は従来構造の同期機の場合、破線（６’、７’）は本発
明による同期の場合であって図で明らがなよ５に内部相
差角δ′はδより小さくなっており、すなわち安定な方
向に動いている。Embodiments of the present invention will be described below based on the drawings. Bass 1
The figure is an exploded view of the magnetic pole portion of a synchronous machine that is an embodiment of the present invention. j, , 1' are conventional main poles, and a complementary pole 2.2' is provided between the main pole and the main pole.
It is something. 1 a and 1 a' are main pole field windings,
2a and 2s' indicate the interpolation field windings. The magnetic flux distribution in the magnetic poles arranged in this way is shown in FIG. The magnetic flux distribution is shown by curves 4 and 4'. Combining these 4 magnetic fluxes results in an 8-flux distribution in the synchronous machine according to the present invention. Therefore, by combining 111+Kθ4.4' with surface line 3, curve 5 shown by the PL line is obtained. In other words, this l'IiI line 5
In the magnetic flux distribution in the synchronous machine of the present invention, the center of the magnetic flux is shifted to the right in the figure. In other words, this state can be changed as appropriate to cancel out the armature reaction. In this way, the armature reaction is reduced and the adverse phenomena resulting from the armature reaction described above are reduced. The hector is also shown in Figure 3. 5 indicates the terminal voltage, 6°6' is the armature reaction force 7 ctance, 7,7
′ is the internal synchronous reactance voltage. Chuo Line (6,7)
The dashed lines (6', 7') are for the synchronous machine of the conventional structure, and the broken lines (6', 7') are for the synchronous machine according to the present invention. moving in a stable direction.

以上述べたように主極と主極との間に補極を設けて主極
の磁束と補極の出来とを束髪させるように励磁すること
Ｋより磁束分布が変化し、電機子反作用を打消す方向に
作用するので雷、接子反作用による有効出来の減少が少
なくなって、同期はづれを起こす度合が少なくなり、励
磁容量を犬きくしなくても運転の安定性が広がり出力限
界も大きくなるとい５効果がある。As mentioned above, by providing a commutating pole between the main poles and excitation in such a way that the magnetic flux of the main pole and the product of the commutating pole are bundled, the magnetic flux distribution changes due to K, and the armature reaction is affected. Since it acts in the extinguishing direction, there is less reduction in effective performance due to lightning and interlocking reactions, the degree of synchronization loss is reduced, and the stability of operation is increased without increasing the excitation capacity, and the output limit is also increased. There are five effects.

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

第１図は本発明の一笑施例である同期様の啓柘配置の展
開図、第２図は各磁極による伊東分布図、第３図はその
ベクトノＬ図である。 １、Ｊ’：主極、２．２’：補極。FIG. 1 is a developed view of a synchronous-like Keizu arrangement, which is a simple embodiment of the present invention, FIG. 2 is an ITO distribution map of each magnetic pole, and FIG. 3 is a vector L diagram thereof. 1. J': Main pole, 2.2': Complementary pole.

Claims (1)

【特許請求の範囲】[Claims] １）６葎型の磁極を有する同期機において、互に隣り合
う主極と主極との間に補極をも５けて、主極の磁束と補
極の８束とを型費させるように主極と補極とを励磁する
ことを＠徴とする同期機。1) In a synchronous machine with 6-shaped magnetic poles, 5 commutating poles are also placed between the adjacent main poles, so that the magnetic flux of the main pole and the 8 fluxes of the commutating poles are separated. A synchronous machine whose main pole and complementary pole are excited at the same time.