JPH0519386B2 - - Google Patents
Info
- Publication number
- JPH0519386B2 JPH0519386B2 JP58194153A JP19415383A JPH0519386B2 JP H0519386 B2 JPH0519386 B2 JP H0519386B2 JP 58194153 A JP58194153 A JP 58194153A JP 19415383 A JP19415383 A JP 19415383A JP H0519386 B2 JPH0519386 B2 JP H0519386B2
- Authority
- JP
- Japan
- Prior art keywords
- brush
- voltage
- commutator
- machine
- winding
- 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
- 238000004804 winding Methods 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/22—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having compensating or damping windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/14—Circuit arrangements for improvement of commutation, e.g. by use of unidirectionally conductive elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は直流機に係わり、特に、整流性能を改
善する整流補償装置を有するものに好適な直流機
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a DC machine, and particularly to a DC machine suitable for having a rectification compensation device for improving rectification performance.
一般に、直流機は回転数に対して無火花帯位置
の移動現象があり、全運転領域で無火花整流を達
成するのが困難であつた。
Generally, in DC machines, there is a phenomenon in which the position of the sparkless band shifts with respect to the rotational speed, and it is difficult to achieve sparkless commutation in the entire operating range.
この対策として、整流状態を検出し、整流状態
に応じて補極起磁力を調整することにより無火花
整流を達成する方法が提案されている。 As a countermeasure to this problem, a method has been proposed in which the rectification state is detected and the interpolation magnetomotive force is adjusted according to the rectification state to achieve sparkless commutation.
この例を第１図ないし第３図を用いて説明す
る。第１図は直流機の要部展開図であり、固定子
を形成する継鉄１の内周には主極２と補極３が設
けられている。主極２は主極鉄心４と界磁巻線５
とにより形成され、固定子内部で回転する電機子
９の電機子巻線６に主磁束を与える役目をなし、
補極３は補国鉄心７と補極巻線８とで形成され、
電機子巻線６内を流れる電流が反転する整流時に
整流起電力を発生させるための補極磁束を与える
役目をなしている。 This example will be explained using FIGS. 1 to 3. FIG. 1 is an exploded view of the main parts of a DC machine, in which a main pole 2 and a complementary pole 3 are provided on the inner periphery of a yoke 1 forming a stator. The main pole 2 has a main pole iron core 4 and a field winding 5
It serves to provide main magnetic flux to the armature winding 6 of the armature 9 rotating inside the stator,
The commutating pole 3 is formed by a supplementary national iron core 7 and a commutating pole winding 8,
It serves to provide interpolation magnetic flux for generating a rectified electromotive force during rectification when the current flowing in the armature winding 6 is reversed.
また、補極鉄心７の先端側に設けられた補助巻
線１０は、補極巻線８とは差動的に作用し、第２
図に示すように、無火花帯が回転数の増加に伴つ
て過整流側に移動するので、その起磁力を調整し
て負荷軸を無火花帯中心のＯ−Ｐ線上に移動させ
る役目をする。 Further, the auxiliary winding 10 provided on the tip side of the commutating pole iron core 7 acts differentially with the commuting pole winding 8, and the second
As shown in the figure, the non-sparking zone moves to the over-rectifying side as the rotation speed increases, so the function is to adjust the magnetomotive force and move the load shaft onto the O-P line at the center of the non-sparking zone. .
第３図は、外部電源により整流状態に応じて補
助巻線１０に電流を供給する整流補償装置の回路
ブロツク図を示す。該図において、１１はブラ
シ、１２は整流子、１３は検出ブラシ、１４は電
力増幅器である。 FIG. 3 shows a circuit block diagram of a rectification compensator that supplies current to the auxiliary winding 10 according to the rectification state from an external power source. In the figure, 11 is a brush, 12 is a commutator, 13 is a detection brush, and 14 is a power amplifier.
電機子電流IMはブラシ１１、整流子１２を介し
て電機子巻線６に流れ、さらに、ブラシ１１から
補極巻線８を通して流れる。補助巻線１０の電流
ipは、整流補償の良否の結果が現われるブラシ出
口近傍のブラシ−整流子片間電圧（以下、検出電
圧と略す）Vbを検出ブラシ１３で検出し、電力
増幅器１４により、この検出電圧Vbに応じて供
給される。即ち、本方式は検出電圧Vbが通常±
3v以内であればブラシ１１から火花を発生しな
いことから、検出電圧Vbに応じて補助巻線１０
の電流ipを流して補極起磁力を調整し、検出電圧
Vbを常に±3v以内に抑えて無火花整流を達成し
ようとするものであつた。 Armature current I M flows through brush 11 and commutator 12 to armature winding 6, and further flows from brush 11 through commutator winding 8. Current in auxiliary winding 10
The detection brush 13 detects the voltage Vb between the brush and the commutator piece near the brush outlet (hereinafter abbreviated as detection voltage), which indicates whether the rectification compensation is good or bad, and the power amplifier 14 detects the voltage Vb according to the detected voltage Vb. will be supplied. In other words, in this method, the detection voltage Vb is normally ±
Since sparks will not be generated from the brush 11 if it is within 3V, the auxiliary winding 10 is
The current ip is applied to adjust the interpolation magnetomotive force, and the detected voltage is
The aim was to always keep Vb within ±3v to achieve sparkless rectification.
しかし、例えばミル用などに用いられる直流機
は定格100％負荷のみならず、200％の過負荷で運
転される場合がある。この場合、100％負荷で無
火花帯が存在しても、200％負荷で存在しないも
のが往々にしてある。 However, for example, DC machines used in mills may be operated not only at 100% of the rated load but also at 200% overload. In this case, even if a no-spark zone exists at 100% load, it often does not exist at 200% load.
このような無火花帯が存在しなくなる領域まで
使用される直流機に本方式を適用した場合は、無
火花帯が存在しないと検出電圧Vbが常に±3v以
内に収まらないから、かえつて整流火花を大きく
したりして、整流子を荒損させ、ブラシ摩耗が増
大する等の欠点があつた。 If this method is applied to a DC machine that is used up to a range where such a spark-free zone no longer exists, the detection voltage Vb will not always stay within ±3V if the spark-free zone does not exist, so the rectifier spark will instead be reduced. This has disadvantages such as increasing the size of the commutator, causing damage to the commutator, and increasing wear on the brushes.
本発明は上述の点に鑑みなされたもので、その
目的とするころは、無火花帯が存在しなくなる領
域まで使用される直流機に適用した場合でも、最
小のブラシ火花で運転でき、整流子を荒損させる
ことはなくブラシの摩耗が増大しない直流機を提
供するにある。
The present invention has been made in view of the above-mentioned points, and its purpose is to be able to operate with minimum brush sparks even when applied to a DC machine that is used up to the point where no spark zone exists, and to The object of the present invention is to provide a DC machine that does not cause damage to the brush and does not increase brush wear.
本発明の直流機は、ブラシの近傍に設けられ、
このブラシと整流子片間におけるブラシと整流子
片が離れるときの電圧を検出する検出ブラシと、
該検出ブラシによる検出電圧が正の電圧の場合に
指令値と比較して指令値以上の正の電圧を出力す
る第１の比較器と、前記検出ブラシによる検出電
圧が負の電圧の場合に指令値と比較して指令値以
上の負の電圧を出力する第２の比較器と、前記第
１の比較器からの出力電圧が入力されて所定の正
の出力電圧を得る第１のピークホールド回路と、
前記第２の比較器からの出力電圧が入力されて所
定の負の出力電圧を得る第２のピークホールド回
路と、前記第１、及び第２のピークホールド回路
からの出力電圧を加算して加算値を得、この加算
値を反転させる信号反転回路と、該信号反転回路
で反転された加算値を入力信号とし、現状の動作
点に対し、加算値が正の方向に大きくなると入力
信号が小さくなつて前記補助巻線への電流量を少
なくし、加算値が負の方向に大きくなると入力信
号が大きくなつて前記補助巻線への電流量を多く
する電力増幅器とからなる整流補償装置を有する
ことを特徴とする。
The DC machine of the present invention is provided near the brush,
a detection brush that detects a voltage between the brush and the commutator piece when the brush and the commutator piece separate;
a first comparator that compares it with a command value and outputs a positive voltage equal to or higher than the command value when the voltage detected by the detection brush is a positive voltage; a second comparator that outputs a negative voltage that is equal to or higher than the command value, and a first peak hold circuit that receives the output voltage from the first comparator and obtains a predetermined positive output voltage. and,
A second peak hold circuit receives the output voltage from the second comparator and obtains a predetermined negative output voltage, and adds the output voltages from the first and second peak hold circuits. A signal inverting circuit obtains a value and inverts this added value, and the added value inverted by the signal inverting circuit is used as an input signal, and as the added value increases in the positive direction with respect to the current operating point, the input signal decreases. and a power amplifier that reduces the amount of current flowing to the auxiliary winding as the value increases, and increases the amount of current flowing to the auxiliary winding as the input signal increases as the added value increases in a negative direction. It is characterized by
即ち、ブラシの火花が不足整流側と過整流側と
で発生することから、検出電圧Vbの正のピーク
値（不足整流側に対応）と負のピーク値（過整流
側に対応）をピークホールド回路で検出し、この
正負のピーク値が最小となるように補助巻線の電
流量を調整し、無火花帯が存在しなくなつた場合
にブラシの火花を最小に抑えるようにしたもので
ある。 In other words, since brush sparks occur on the under-rectified side and over-rectified side, the positive peak value (corresponding to the under-rectified side) and negative peak value (corresponding to the over-rectified side) of the detection voltage Vb are held at their peaks. This is detected by a circuit, and the amount of current in the auxiliary winding is adjusted so that the positive and negative peak values are minimized, thereby minimizing brush sparks when the spark-free zone no longer exists. .
以下、本発明の一実施例を第４図ないし第８図
を用いて説明する。尚、符号は従来と同一のもの
は同符号を使用する。
An embodiment of the present invention will be described below with reference to FIGS. 4 to 8. Incidentally, the same reference numerals are used for the same parts as in the past.
第４図は直流機の整流曲線を示し、ａが不足整
流、ｂが理想的な直線整流、ｃが過整流を示す。
ブラシから発生する火花は、過整流と不足整流の
時に発生する。 FIG. 4 shows the rectification curve of a DC machine, where a shows under-rectification, b shows ideal linear rectification, and c shows over-rectification.
Sparks from the brushes occur during over- and under-rectification.
第５図はブラシ１１の出口近傍に設けた検出ブ
ラシ１３の検出位置を示したものであり（Ｘは回
転方向を示す）、電機子巻線９Ａのブラシ１１に
よる短絡が開放されるときの電圧を検出ブラシ１
３で検出している状態を示す。 FIG. 5 shows the detection position of the detection brush 13 provided near the outlet of the brush 11 (X indicates the rotation direction), and shows the voltage when the short circuit caused by the brush 11 of the armature winding 9A is opened. Detect brush 1
3 indicates the detected state.
第６図は無火花帯が存在する場合の検出ブラシ
１３による検出電圧Vbを示したものであり（図
は正ブラシの検出例である）、第６図ａが不足整
流、第６図ｂが直線整流、第６図ｃが過整流の場
合である。 Figure 6 shows the voltage Vb detected by the detection brush 13 when a no-spark zone exists (the figure is an example of detection of a positive brush), where Figure 6a shows under-rectification and Figure 6b shows voltage Vb detected by the detection brush 13. Linear rectification is the case, and FIG. 6c is the case of over-rectification.
図において、＋Vsp、−Vspはブラシ１１の火花
発生限界電圧を示したものであり、検出電圧Vb
のピーク値がこの±Vspを越えたときにブラシ１
１から火花を発生し、この±Vsp以内にあれば無
火花となる。 In the figure, +Vsp and -Vsp indicate the spark generation limit voltage of the brush 11, and the detection voltage Vb
When the peak value of exceeds this ±Vsp, brush 1
A spark is generated from 1, and if it is within this ±Vsp, there is no spark.
即ち、第６図ａの不足整流のときは検出電圧
Vbが正となり、検出電圧Vbのピーク値が正の火
花発生限界電圧＋Vspを越えたとき、ブラシ１１
から火花を発生し、第６図ｃの過整流の時は検出
電圧Vbが負となり、検出電圧Vbのピーク値が負
の火花発生限界電圧−Vspを越えたとき、ブラシ
１１から火花を発生する。 That is, in the case of under-rectification as shown in Fig. 6a, the detection voltage
When Vb becomes positive and the peak value of the detection voltage Vb exceeds the positive spark generation limit voltage +Vsp, the brush 11
During over-rectification as shown in Fig. 6c, the detection voltage Vb becomes negative, and when the peak value of the detection voltage Vb exceeds the negative spark generation limit voltage -Vsp, sparks are generated from the brush 11. .
これに対し、無火花帯が存在しない場合は、検
出電圧Vbのピーク値が、第７図に示すように、
常に正負の火花発生限界電圧±Vspを越えている
状態となる。 On the other hand, when there is no spark zone, the peak value of the detection voltage Vb is as shown in Fig. 7.
The voltage always exceeds the positive and negative spark generation limit voltage ±Vsp.
本発明の一実施例を第８図を用いて説明する。
該図においては、１５Ａ，１５Ｂは比較器１６
Ａ，１６Ｂはピークホールド回路、１７は信号反
転回路である。 An embodiment of the present invention will be described with reference to FIG.
In the figure, 15A and 15B are comparators 16
A and 16B are peak hold circuits, and 17 is a signal inversion circuit.
即ち、本実施例では検出ブラシ１３による検出
電圧Vbの正の電圧を、比較器１５Ａで指令値と
比較して指令値以上の正の電圧を出力し、その出
力をピークホールド回路１６Ａに入力し、出力電
圧＋Vb1を得る。また、検出電圧Vbの負の電圧
を、比較器１５Ｂで指令値と比較して指令値以上
の負の電圧を出力し、その出力をピークホールド
回路１６Ｂに入力し、負の出力電圧−Vb2を得
る。そして、この両出力電圧Vb1，Vb2の加算値
Vb3（Vb3＝Vb1−Vb2）を得、さらに、信号反転
回路１７で反転して、電力増幅器１４の入力信号
とする。この結果、現状の動作点に対し、加算値
Vb3が＋の方向に多きくなると（正のピーク値が
大きくなる）信号反転回路１７を介しているので
電力増幅器１４の入力信号が小さくなつて補助巻
線１０の電流量は小さくなり（補極を強める方
向）、これに対し、加算値Vb3が−の方向に大き
くなると（負のピーク値が大きくなる）信号反転
回路１７を介しているので電力増幅器１４の入力
信号が大きくなつて補助巻線１０の電流量が大き
くなる（補極を弱める方向）。 That is, in this embodiment, the positive voltage Vb detected by the detection brush 13 is compared with the command value by the comparator 15A, a positive voltage greater than the command value is output, and the output is input to the peak hold circuit 16A. , get the output voltage +Vb 1 . Further, the negative voltage of the detection voltage Vb is compared with the command value by the comparator 15B, a negative voltage greater than the command value is outputted, and the output is inputted to the peak hold circuit 16B, and the negative output voltage -Vb 2 get. Then, the sum of these two output voltages Vb 1 and Vb 2
Vb 3 (Vb 3 =Vb 1 -Vb 2 ) is obtained and further inverted by a signal inverting circuit 17 to be used as an input signal to the power amplifier 14. As a result, the additional value
When Vb 3 increases in the + direction (the positive peak value increases), the input signal to the power amplifier 14 decreases because it passes through the signal inversion circuit 17, and the amount of current in the auxiliary winding 10 decreases (compensation). On the other hand, when the added value Vb 3 increases in the negative direction (the negative peak value increases), the input signal to the power amplifier 14 increases and becomes auxiliary because it is passed through the signal inversion circuit 17. The amount of current in the winding 10 increases (in the direction of weakening the commutating pole).
結果的には、検出電圧の正のピーク値と負のピ
ーク値が最小になるように補助巻線１０の電流量
ipを調整するので、無火花帯が存在する場合は無
火花整流を達成し、さらに、無火花帯が存在しな
くなつた場合は、ブラシの火花を最小に抑えるこ
とができる。 As a result, the amount of current in the auxiliary winding 10 is adjusted so that the positive peak value and negative peak value of the detection voltage are minimized.
Since the ip is adjusted, spark-free commutation can be achieved when a no-spark zone is present, and brush sparks can be minimized when a no-spark zone is no longer present.
以上説明した本発明の直流機によれば、ブラシ
の近傍に設けられ、このブラシと整流子片間にお
けるブラシと整流子片が離れるときの電圧を検出
する検出ブラシと、該検出ブラシによる検出電圧
が正の電圧の場合に指令値と比較して指令値以上
の正の電圧を出力する第１の比較器と、前記検出
ブラシによる検出電圧が負の電圧の場合に指令値
と比較して指令値以上の負の電圧を出力する第２
の比較器と、前記第１の比較器からの出力電圧が
入力されて所定の正の出力電圧を得る第１のピー
クホールド回路と、前記第２の比較器からの出力
電圧が入力されて所定の負の出力電圧を得る第２
のピークホールド回路と、前記第１、及び第２の
ピークホールド回路からの出力電圧を加算して加
算値を得、この加算値を反転させる信号反転回路
と、該信号反転回路で反転された加算値を入力信
号とし、現状の動作点に体し、加算値が正の方向
に大きくなると入力信号が小さくなつて前記補助
巻線への電流量を少なくし、加算値が負の方向に
大きくなると入力信号が大きくなつて前記補助巻
線への電流量を多くする電力増幅器とからなる整
流補償装置を有するものであるから、検出電圧
Vbの正のピーク値（不足整流側に対応）と負の
ピーク値（過整流側に対応）をピークホールド回
路で検出し、この正負のピーク値が最小となるよ
うに補助巻線の電流量を調整し、無火花帯が存在
しなくなつた場合にブラシの火花を最小に抑える
ことができ、整流子を荒損させることはなくブラ
シの摩耗が増大しない直流機を提供することがで
きる。
According to the DC machine of the present invention described above, there is provided a detection brush which is provided near the brush and detects the voltage between the brush and the commutator pieces when the brush and the commutator pieces separate, and a detection brush by the detection brush. a first comparator that outputs a positive voltage equal to or higher than the command value by comparing it with a command value when the voltage is a positive voltage; A second output voltage that is greater than or equal to the value
a first peak hold circuit which receives the output voltage from the first comparator and obtains a predetermined positive output voltage; and a first peak hold circuit which receives the output voltage from the second comparator and obtains a predetermined positive output voltage. The second to obtain a negative output voltage of
a peak hold circuit; a signal inversion circuit that adds the output voltages from the first and second peak hold circuits to obtain an added value; and a signal inversion circuit that inverts the added value; and an addition signal inverted by the signal inversion circuit. When the value is used as an input signal and is applied to the current operating point, when the added value increases in the positive direction, the input signal becomes smaller and the amount of current to the auxiliary winding is reduced, and when the added value increases in the negative direction Since the device has a rectification compensation device consisting of a power amplifier that increases the amount of current to the auxiliary winding as the input signal increases, the detected voltage
A peak hold circuit detects the positive peak value (corresponding to under-rectification side) and negative peak value (corresponding to over-rectification side) of Vb, and adjusts the amount of current in the auxiliary winding so that these positive and negative peak values are minimized. It is possible to provide a DC machine in which brush sparks can be minimized when a non-sparking zone ceases to exist, and the commutator is not damaged and the brush wear does not increase.
第１図は直流機の概略構造を示す要部展開図、
第２図は回転数に対する無火花帯移動現象の説明
図、第３図は従来の直流機における整流補償装置
を示すブロツク図、第４図は直流機における整流
曲線を示す図、第５図は検出ブラシの検出位置を
示す図、第６図、及び第７図は検出ブラシによる
検出電圧を示す特性図、第８図は本発明の直流機
における整流補償装置の一実施例を示すブロツク
図である。
２……主極、３……補極、４……主極鉄心、５
……界磁巻線、７……補極鉄心、８……補極巻
線、９……電機子、１０……補助巻線、１１……
ブラシ、１２……整流子、１２Ａ，１２Ｂ……整
流子片、１３……検出ブラシ、１４……電力増幅
器、１５Ａ，１５Ｂ……比較器、１６Ａ，１６Ｂ
……ピークホールド回路、１７……信号反転回
路、IM……電機子電流、ip……補助巻線の電流
量、Vb……検出電圧、Vsp……火花発生限界電
圧、Vb1……正の出力電圧、Vb2……負の出力電
圧、Vb3……Vb1，Vb2の加算値。
Figure 1 is an exploded view of the main parts showing the general structure of a DC machine.
Fig. 2 is an explanatory diagram of the no-spark zone movement phenomenon with respect to rotational speed, Fig. 3 is a block diagram showing a rectification compensation device in a conventional DC machine, Fig. 4 is a diagram showing a rectification curve in a DC machine, and Fig. 5 is a diagram showing the rectification compensation device in a conventional DC machine. FIGS. 6 and 7 are diagrams showing the detection position of the detection brush, characteristic diagrams showing the voltage detected by the detection brush, and FIG. 8 is a block diagram showing an embodiment of the rectification compensation device in the DC machine of the present invention. be. 2... Main pole, 3... Complementary pole, 4... Main pole iron core, 5
...Field winding, 7...Commuting pole iron core, 8...Commuting pole winding, 9...Armature, 10...Auxiliary winding, 11...
Brush, 12... Commutator, 12A, 12B... Commutator piece, 13... Detection brush, 14... Power amplifier, 15A, 15B... Comparator, 16A, 16B
...Peak hold circuit, 17...Signal inversion circuit, I M ...Armature current, ip...Auxiliary winding current amount, Vb...Detection voltage, Vsp...Spark generation limit voltage, Vb 1 ...Positive output voltage, Vb 2 ... negative output voltage, Vb 3 ... addition value of Vb 1 and Vb 2 .
Claims (1)
と、主極鉄心４と界磁巻線５とから形成され、前
記電機子９の電機子巻線６に主磁束を与える主極
２、補極鉄心７と補極巻線８とから形成され、前
記電機子巻線６内を流れる電流が反転する整流時
に整流起電力を発生させるための補極磁束を与え
る補極３、前記補極鉄心７の先端側に設けられ、
前記補極巻線８とは差動的に作用し、その起磁力
を調整して負荷軸を無火花帯内に移動するように
電流が流れる補助巻線１０、ならびにブラシ１１
をもつ固定子とを備え、前記電機子９への電力の
授受を前記ブラシ１１、ならびに整流子１２を介
して行う直流機において、 前記直流機は、前記ブラシ１１の近傍に設けら
れ、このブラシ１１と整流子片１２Ａ，１２Ｂ間
におけるブラシ１１と整流子片１２Ａ，１２Ｂが
離れるときの電圧を検出する検出ブラシ１３と、
該検出ブラシ１３による検出電圧Vbが正の電圧
の場合に指令値と比較して指令値以上の正の電圧
を出力する第１の比較器１５Ａと、前記検出ブラ
シ１３による検出電圧Vbが負の電圧の場合に指
令値と比較して指令値以上の負の電圧を出力する
第２の比較器１５Ｂと、前記第１の比較器１５Ａ
からの出力電圧が入力されて所定の正の出力電圧
Vb1を得る第１のピークホールド回路１６Ａと、
前記第２の比較器１５Ｂからの出力電圧が入力さ
れて所定の負の出力電圧Vb2を得る第２のピーク
ホールド回路１６Ｂと、前記第１、及び第２のピ
ークホールド回路１６Ａ、及び１６Ｂからの出力
電圧Vb1，Vb2を加算して加算値Vb3を得、この
加算値Vb3を反転させる信号反転回路１７と、該
信号反転回路１７で反転された加算値Vb3を入力
信号とし、現状の動作点に対し、加算値Vb3が正
の方向に大きくなると入力信号が小さくなつて前
記補助巻線１０への電流量ipを少なくし、加算値
Vb3が負の方向に大きくなると入力信号が大きく
なつて前記補助巻線１０への電流量ipを多くする
電力増幅器１４とからなる整流補償装置を有する
ことを特徴とする直流機。[Claims] 1. It is formed from a rotor having an armature 9 and a commutator 12, a main pole iron core 4, and a field winding 5, and transmits the main magnetic flux to the armature winding 6 of the armature 9. A commutator is formed from a main pole 2, a commutator core 7, and a commutator winding 8, and provides a commutator magnetic flux for generating a rectified electromotive force during rectification when the current flowing in the armature winding 6 is reversed. 3. Provided on the tip side of the commutating pole core 7,
An auxiliary winding 10 that acts differentially with the commutator winding 8 and through which current flows so as to adjust its magnetomotive force and move the load shaft within the non-sparking zone, and a brush 11.
In the DC machine, the DC machine is provided in the vicinity of the brush 11, and the DC machine is provided in the vicinity of the brush 11, and the DC machine is provided in the vicinity of the brush 11, and the DC machine is provided with a stator having a detection brush 13 that detects the voltage between the brush 11 and the commutator pieces 12A, 12B when the brush 11 and the commutator pieces 12A, 12B are separated;
A first comparator 15A outputs a positive voltage equal to or higher than the command value by comparing it with a command value when the voltage Vb detected by the detection brush 13 is a positive voltage; a second comparator 15B that outputs a negative voltage equal to or greater than the command value when compared with the command value in the case of voltage; and the first comparator 15A
The output voltage from the input is a predetermined positive output voltage.
a first peak hold circuit 16A that obtains Vb 1 ;
a second peak hold circuit 16B into which the output voltage from the second comparator 15B is input to obtain a predetermined negative output voltage Vb 2 ; and from the first and second peak hold circuits 16A and 16B. A signal inversion circuit 17 that adds the output voltages Vb 1 and Vb 2 to obtain an added value Vb 3 and inverts this added value Vb 3 , and uses the added value Vb 3 inverted by the signal inverting circuit 17 as an input signal. , when the additional value Vb 3 increases in the positive direction with respect to the current operating point, the input signal becomes smaller and the amount of current ip to the auxiliary winding 10 is reduced, and the additional value
A DC machine comprising a rectification compensator comprising a power amplifier 14 that increases the amount of current ip to the auxiliary winding 10 by increasing the input signal as Vb 3 increases in the negative direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19415383A JPS6087648A (en) | 1983-10-19 | 1983-10-19 | Commutation compensator of dc electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19415383A JPS6087648A (en) | 1983-10-19 | 1983-10-19 | Commutation compensator of dc electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6087648A JPS6087648A (en) | 1985-05-17 |
| JPH0519386B2 true JPH0519386B2 (en) | 1993-03-16 |
Family
ID=16319797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19415383A Granted JPS6087648A (en) | 1983-10-19 | 1983-10-19 | Commutation compensator of dc electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6087648A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008110964A2 (en) | 2007-03-09 | 2008-09-18 | Koninklijke Philips Electronics N.V. | Controlling a power of an electrical motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5460406A (en) * | 1977-10-21 | 1979-05-15 | Hitachi Ltd | Rectification compensator for dc machine |
| JPS54124208A (en) * | 1978-03-18 | 1979-09-27 | Hitachi Ltd | Dc machine rectification compensating device |
-
1983
- 1983-10-19 JP JP19415383A patent/JPS6087648A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5460406A (en) * | 1977-10-21 | 1979-05-15 | Hitachi Ltd | Rectification compensator for dc machine |
| JPS54124208A (en) * | 1978-03-18 | 1979-09-27 | Hitachi Ltd | Dc machine rectification compensating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6087648A (en) | 1985-05-17 |
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