JPS63121495A - Variable speed motor - Google Patents
Variable speed motorInfo
- Publication number
- JPS63121495A JPS63121495A JP61266301A JP26630186A JPS63121495A JP S63121495 A JPS63121495 A JP S63121495A JP 61266301 A JP61266301 A JP 61266301A JP 26630186 A JP26630186 A JP 26630186A JP S63121495 A JPS63121495 A JP S63121495A
- Authority
- JP
- Japan
- Prior art keywords
- current
- switch
- windings
- magnetic flux
- stator
- 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
Links
- 238000004804 winding Methods 0.000 claims description 53
- 230000004907 flux Effects 0.000 claims description 34
- 238000000034 method Methods 0.000 abstract description 8
- 239000004020 conductor Substances 0.000 description 16
- 230000001052 transient effect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 241000555745 Sciuridae Species 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、トルク特性および効率が良く速度制御が容易
な可変速電動機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a variable speed electric motor with good torque characteristics and efficiency and easy speed control.
電動機の速度を制御する方法の一つとして電源周波数を
変える方法がある。°この方法は連続的かつ広範囲な速
度制御が可能である反面、この方法で必要とする周波数
変換装置を高価とし、また周波数変換装置により交流を
直流に変換して再度交流に変換する過程において一般に
高調波および電波が発生し、これらによってコンピュー
ター、その地合種電気制御機器の誤動作あるいはコンデ
ンサーの過熱等の障害を招くことがあり、このうち高調
波障害に対しては、フィルターを設置することにより対
策を講じることもできるが、フィルターの設置にはコス
トがかかる。また低速度において一般に性能が不充分と
なる等の欠点を有するものである。One method of controlling the speed of an electric motor is to change the power frequency. °While this method allows for continuous and wide-range speed control, the frequency converter required by this method is expensive, and the process of converting alternating current to direct current and then converting it back to alternating current using the frequency converter is generally Harmonics and radio waves are generated, which can cause problems such as malfunction of computers and their electrical control equipment, or overheating of capacitors.In order to prevent harmonic interference, it is possible to prevent harmonic interference by installing a filter. Although countermeasures can be taken, installing filters is costly. Additionally, they have drawbacks such as generally insufficient performance at low speeds.
また、電動機の極数を変えて速度を制御する方法は、極
致変換によって段階的に速度を変えることができない欠
点がある。Furthermore, the method of controlling the speed by changing the number of poles of the electric motor has the disadvantage that the speed cannot be changed step by step through pole conversion.
また、電源の電圧を変えて速度を制御する方法では、速
度制御が連続的に行える反面、特に速度領域において効
率が悪くなる欠点がある。Further, in the method of controlling the speed by changing the voltage of the power supply, although speed control can be performed continuously, there is a drawback that efficiency is poor especially in the speed range.
そして巻線型電動機において二次抵抗を変化させすべり
を変えて速度制御を行う方法は、比較的簡単に連続的な
速度制御が可能である反面、外部からブラシとスリップ
リングを介して回転子巻線回路へ抵抗を挿入するために
、ブラシの消耗による保守点検を必要とし、また、かご
形誘導電動機は、二次抵抗を変化させて速度制御を行う
ことができない欠点がある。In wire-wound motors, the method of controlling the speed by changing the secondary resistance and changing the slip is relatively easy to control the speed continuously, but on the other hand, it is possible to control the rotor winding from the outside via brushes and slip rings. Inserting a resistor into the circuit requires maintenance and inspection due to brush wear, and squirrel cage induction motors have the disadvantage that speed control cannot be performed by changing the secondary resistance.
また、直流電動機はブラシおよび整流子の消耗による保
守点検を必要とする欠点がある。Additionally, DC motors have the disadvantage of requiring maintenance and inspection due to wear and tear on the brushes and commutator.
本発明は、上記従来技術の欠点を改善し、速度制御を広
範囲にかつその速度制御を連続的に実施できると共にト
ルク特性および効率の良い可変速電動機を提供すること
にある。An object of the present invention is to improve the drawbacks of the prior art described above, and to provide a variable speed electric motor that can perform speed control over a wide range and continuously, and has good torque characteristics and efficiency.
上記目的を達成するために本発明は、回転子の外周に対
峙して固定子を設け、前記固定子には少なくとも２個の
巻線をそれぞれの巻線がつくる磁束の方向が一致しない
ように巻装し、前記それぞれの巻線に直列に、逆極性に
並列に接続したサイリスクまたは直列にスイッチを連結
したダイオードを逆極性に並列に接続したものを連結し
、前記サイリスタまたはスイッチはスイッチ制御装置に
連結し、前記それぞれの巻線のうち少なくとも１個には
電圧調整装置を連結するとともに前記それぞれの巻線を
電圧の位相の異なる交流電源に接続するようになしたこ
とにより解決の手段とした。In order to achieve the above object, the present invention provides a stator facing the outer periphery of the rotor, and the stator has at least two windings so that the directions of magnetic flux produced by each winding do not match. A thyristor or a switch connected in series with a switch connected in parallel with a diode connected in reverse polarity is connected in series to each winding, and a thyristor or a switch is connected in parallel with a reverse polarity. The solution was achieved by connecting a voltage regulator to at least one of the respective windings, and connecting each of the windings to AC power sources having different voltage phases. .
固定子に巻装されたそれぞれの巻線に直列に、逆極性に
並列に接続したサイリスタまたは直列にスイッチを連結
したダイオードを逆極性に並列に接続したものを連結し
であるが、一方側のサイリスタを導通させるかまたは前
記一方側のスイッチを投入すれば固定子巻線には整流さ
れた電流が流れる。この電流に対応して回転子導体に電
流が流れる。前記回転子導体に流れる電流は前記一方側
のサイリスタを導通するかまたは前記一方側のスイッチ
を投入した瞬間よりしばらくの間は脈流電流であるが、
時間の経過とともに交流電流へ移行する過渡現象がある
。そして固定子巻線に流れる電流と回転子導体に流れる
電流の差電流が磁束をつくる。Each winding wound around the stator is connected in series with a thyristor connected in parallel with opposite polarity, or with a diode connected in series with a switch connected in parallel with opposite polarity. When the thyristor is made conductive or the switch on one side is turned on, a rectified current flows through the stator winding. A current flows through the rotor conductors in response to this current. The current flowing in the rotor conductor is a pulsating current for a while from the moment when the one side thyristor is turned on or the one side switch is turned on,
There is a transient phenomenon that transitions to alternating current over time. The difference in current between the current flowing through the stator windings and the current flowing through the rotor conductors creates magnetic flux.
前記一方側のサイリスタを導通させるがまたは前記一方
側のスイッチを投入した後に、他方側のサイリスタを導
通させるかまたは他方側のスイッチを投入すれば前記逆
極性に並列に接続されたサイリスタまたはダイオードの
両者が導通状態となるので固定子巻線に流れる電流は交
流電流となる。そして前記交流電流に対応する電流が回
転子導体に流れるのであるが、前記回転子導体に流れる
電流は、前記他方側のサイリスタを導通させるかまたは
前記他方側のスイッチを投入した瞬間よりしばらくの間
は直流分を含んだ電流となり、時間の経過とともに直流
分が減衰して正と負の電流値が等しい交流電流となる過
渡現象がある。If the thyristor on the one side is made conductive, or after the switch on the one side is turned on, the thyristor on the other side is made conductive or the switch on the other side is turned on, the thyristor or diode connected in parallel with the opposite polarity is turned on. Since both are in a conductive state, the current flowing through the stator winding becomes an alternating current. Then, a current corresponding to the alternating current flows through the rotor conductor, and the current flowing through the rotor conductor continues for a while from the moment when the other side thyristor is made conductive or the other side switch is turned on. is a current that includes a direct current component, and there is a transient phenomenon in which the direct current component attenuates over time and becomes an alternating current with equal positive and negative current values.
この場合においても、固定子巻線に流れる電流と回転子
導体に流れる電流の差の電流が磁束をつくる。この磁束
は前記サイリスタを導通させるかまたは前記スイッチを
投入して前記逆極性に並列に接続されたサイリスタまた
はダイオードの両方が同時に導通した瞬間において最大
となり時間の経過とともに減衰する。In this case as well, the difference in current between the current flowing through the stator windings and the current flowing through the rotor conductors creates magnetic flux. This magnetic flux becomes maximum at the moment when the thyristor is made conductive or the switch is turned on and both the thyristors or diodes connected in parallel with the opposite polarity are made conductive at the same time, and attenuates over time.
次に、前記一方側のサイリスタの導通が開放されるかま
たは前記一方側のスイッチが開放されれば固定子巻線に
は逆方向に整流された電流が流れ、この電流に対応する
電流が回転子導体に流れ、前記固定子巻線に流れる電流
と回転子導体に流れる電流の差電流が磁束をつくり、こ
の磁束は当初の磁束とは逆方向の磁束となる。Next, when the continuity of the thyristor on the one side is opened or the switch on the one side is opened, a current rectified in the opposite direction flows through the stator winding, and a current corresponding to this current rotates. The difference current between the current flowing in the child conductor and the current flowing in the stator winding and the current flowing in the rotor conductor creates a magnetic flux, and this magnetic flux becomes a magnetic flux in the opposite direction to the original magnetic flux.
固定子に巻装された他の巻線のサイリスタまたはスイッ
チについても、同様に投入開放の操作を行って一方の固
定子巻線に整流電流を流している間は他方の固定子巻線
に交流電流を流すようにし、しかも整流電流の極性を交
互に転換するようにすれば回転子導体に流れる電流と磁
束により、トルクを生じ、回転子は回転し続ける。Similarly, for the thyristors or switches of other windings wound on the stator, the closing and opening operations are performed in the same way, so that while rectified current is flowing through one stator winding, alternating current is flowing through the other stator winding. If a current is allowed to flow and the polarity of the rectified current is alternately switched, the current and magnetic flux flowing through the rotor conductors will generate torque and the rotor will continue to rotate.
なお、トルクは過渡現象が減衰しても一方の固定子巻線
に整流電流を流している間に他方の固定子巻線に交流電
流を流しているので、その交流電流のつくる交番磁束と
回転子導体に流れる整流電流との間にトルクを生じる。Note that even if the transient phenomenon is attenuated, the torque is still constant because while the rectified current is flowing through one stator winding, the alternating current is flowing through the other stator winding, so the alternating magnetic flux and rotation created by the alternating current are Torque is generated between the rectified current flowing through the child conductor.
なお回転速度はトルク制御によって行う。すなわち固定
子巻線のうち少なくとも１個に装設された電圧調整装置
の出力電圧を調整することにより固定子巻線に流れる電
流を調整すればトルクを制御することができる。また、
サイリスタの導通・開放の操作またはスイッチ操作の間
隔を変えることによってもある程度トルクを制御するこ
とができる。Note that the rotation speed is controlled by torque control. That is, the torque can be controlled by adjusting the output voltage of a voltage regulator installed in at least one of the stator windings to adjust the current flowing through the stator windings. Also,
Torque can also be controlled to some extent by changing the conduction/opening operation of the thyristor or the interval between switch operations.
インバータやサイクロコンバータを用いた可変速電動機
においては、固定子巻線に流れる電流の極性切換の周期
が回転子の回転数を大きく支配するが、本発明の可変迷
電＊ＪＪ ｉは極性切換の周期にはあまり支配されず、
直流機のような特性を一部もっている。すなわち本発明
の可変速電動機は、過渡現象を利用してトルクを出すと
同時に交流電流によってつくられる交番磁束と回転子に
流れる整流電流によってもトルクを出すので、過渡現象
の時定数には必ずしも支配されないで過渡現象によるト
ルクと交番磁束と回転子導体に流れる整流電流によるト
ルクとの重畳効果によって大きなトルクを出すことがで
きる。なお、逆極性に並列に接続したサイリスタの代わ
りにトライアックを用いてもよい。In a variable speed motor using an inverter or cycloconverter, the period of polarity switching of the current flowing through the stator winding largely controls the rotation speed of the rotor. Not really controlled by the cycle,
It has some characteristics similar to a DC machine. In other words, the variable speed motor of the present invention utilizes transient phenomena to generate torque, and at the same time generates torque using alternating magnetic flux created by alternating current and rectified current flowing through the rotor. A large torque can be produced by the superimposition of the torque caused by transient phenomena, the alternating magnetic flux, and the torque caused by the rectified current flowing through the rotor conductors. Note that a triac may be used instead of a thyristor connected in parallel with opposite polarity.
本発明の実施例を第１図〜第４図により説明する。 Embodiments of the present invention will be described with reference to FIGS. 1 to 4.
本発明に用いるスイッチは電気回路の開閉を行う全ての
スイッチを含み、半導体等から成る無接点スイッチとリ
レー等から成る有接点スイッチを意味する。The switch used in the present invention includes all switches for opening and closing an electric circuit, and refers to a non-contact switch made of a semiconductor or the like and a contact switch made of a relay or the like.
第１図に示すように回転子２の外周に対峙して固定子１
を設け、固定子１には２つの巻線３および４を巻装する
。巻線３と巻線４のつくる磁束が電気角で９０°になる
ように巻線３と巻線４の固定子上の位置は電気角で９０
”になるように巻装する。As shown in FIG.
is provided, and two windings 3 and 4 are wound around the stator 1. The positions of windings 3 and 4 on the stator are set at 90 degrees in electrical angle so that the magnetic fluxes created by windings 3 and 4 are 90 degrees in electrical angle.
” Wrap it so that it looks like this.
回転子２に装着されている回転子導体５はかご型回転子
においては回転子の軸方向の両端においてすべての回転
子導体を短絡する。また、巻線型回転子を使用してもよ
い。The rotor conductor 5 attached to the rotor 2 short-circuits all the rotor conductors at both ends of the rotor in the axial direction in a squirrel cage rotor. Alternatively, a wire-wound rotor may be used.
次に第２図に示すように固定子巻線３と４のそれぞれに
ダイオードＤ１．０２．ＤＩ’ 、０２′を逆極性に並
列に接続したものを直列に連結しダイオードＤＩ、Ｄ２
．ＤＩ’ 、Ｄ２’には、それぞれスイッチＳ＋、８２
．８１’ 。Next, as shown in FIG. 2, diodes D1.02. DI' and 02' are connected in parallel with opposite polarity and connected in series to form diodes DI and D2.
．． DI' and D2' have switches S+ and 82, respectively.
．． 81'.
Ｓ２’ を直列に連結しである。固定子巻線３゜４のそ
れぞれにダイオードの交流側において電圧調整装置６．
７を介設し、前記電圧調整装置６の入力側は直接交流電
源に接続し、前記電圧調整装置７の入力側は電圧移相装
置８を介して交流電源に接続する。また前記スイッチＳ
＋。S2' are connected in series. A voltage regulator 6. on the alternating current side of the diode in each of the stator windings 3.4.
7, the input side of the voltage regulator 6 is directly connected to the AC power supply, and the input side of the voltage regulator 7 is connected to the AC power supply via the voltage phase shifter 8. In addition, the switch S
+.
８２．８＋’ 、Ｓ２’ はすべてスイッチ制御装置９
に接続しである。本発明の実施例においては、電圧調整
装置６．７をそれぞれの巻線３゜４に介設しであるが、
いずれか一方の巻線のみに電圧調整装置を介設するもの
でも相応の特性が得られる。82.8+', S2' are all switch control devices 9
It is connected to. In an embodiment of the invention, a voltage regulator 6.7 is provided in each winding 3.4.
Appropriate characteristics can be obtained even when a voltage regulator is provided in only one of the windings.
固定子巻線３に直列に連結しであるスイッチＳ２を第３
図に示すように時刻ｔ１において開放するとダイオード
Ｄ１により整流された電流１１が流れる。ただしこの場
合スイッチＳ！は既に投入しである。この電流１１に対
応して回転子導体２に電流１＋’が流れる。この電流１
１′は初めは脈流電流であるが、時間の経過と共に交流
電流に移行する過渡現象がある。電流■１と電流Ｉ＋’
の差電流が磁束φ１を作る。The third switch S2 is connected in series to the stator winding 3.
As shown in the figure, when the circuit is opened at time t1, a current 11 rectified by diode D1 flows. However, in this case switch S! has already been invested. Corresponding to this current 11, a current 1+' flows through the rotor conductor 2. This current 1
1' is a pulsating current at first, but there is a transient phenomenon in which it changes to an alternating current as time passes. Current ■1 and current I+'
The difference current between creates magnetic flux φ1.
従って磁束φ１は時刻ｔ１においては零であるが、時間
の経過と共に増大し、時刻ｔ２において最大となる。時
刻ｔ２においてスイッチｓ２を投入すると、ダイオード
ＤＩ、Ｄ２が共に導通状態となるので、電流１１は交流
電流となる。Therefore, the magnetic flux φ1 is zero at time t1, but increases with time and reaches a maximum at time t2. When the switch s2 is turned on at time t2, both the diodes DI and D2 become conductive, so the current 11 becomes an alternating current.
この交流電流１１に対応する電流１１″が回転子導体に
流れるのであるが、当初は直流分を含んだ電流となり、
時間の経過と共に直流分が減衰して正・負の電流値の等
しい交流電流となる過渡現象がある。電流■！と電流１
＋’の差電流が磁束φ１を作り、この磁束φ１は時刻ｔ
２において最大で、時間の経過と共に減衰して時刻ｔ３
において零となる。A current 11'' corresponding to this alternating current 11 flows through the rotor conductor, but initially it becomes a current containing a direct current component,
There is a transient phenomenon in which the DC component attenuates over time and becomes an AC current with equal positive and negative current values. Current■! and current 1
+' difference current creates magnetic flux φ1, and this magnetic flux φ1 at time t
It reaches a maximum at time t3 and attenuates as time passes.
becomes zero at .
なお、磁束φ１には電流１１のつくる交番磁束が含まれ
ている。Note that the magnetic flux φ1 includes an alternating magnetic flux generated by the current 11.
次に時刻ｔ３において、スイッチＳ１を開放すると、ダ
イオードＤ２の作用によって、時刻ｔ１の当初の電流１
１とは、逆方向の整流された電流１１が流れ、この電流
１１に対応する電流１＋’が回転子導体２に流れ、電流
１１と電流１＋’の差電流が磁束φ１を作りこの磁束φ
１は時刻ｔ１の当初の磁束とは逆方向の磁束となる。固
定子巻線４に直列に接続されたスイッチＳ＋’ 、８２
’を同様に操作すれば、固定子巻線４に流れる電流Ｉ２
と、その電流■２に対応して流れる回転子電流１２’
と、電流Ｉ２と電流１２’の差電流によって作られる磁
束φ２は固定子巻線３のそれと同様になる。Next, at time t3, when switch S1 is opened, the initial current 1 at time t1 is reduced by the action of diode D2.
1, a rectified current 11 in the opposite direction flows, a current 1+' corresponding to this current 11 flows in the rotor conductor 2, and the difference current between the current 11 and the current 1+' creates a magnetic flux φ1, and this magnetic flux φ
1 is a magnetic flux in the opposite direction to the initial magnetic flux at time t1. Switch S+', 82 connected in series to stator winding 4
If ' is operated in the same way, the current I2 flowing through the stator winding 4 is
and the rotor current 12' flowing corresponding to the current ■2.
Then, the magnetic flux φ2 created by the difference current between the current I2 and the current 12' becomes similar to that of the stator winding 3.
そこで、固定子巻線３に直列に連結されたスイッチ８１
．８２と、固定子巻線４に直列に連結されたスイッチＳ
Ｉ’、Ｓ２”を第４図に示すようなタイムスケジュール
によって、ＯＮ・ＯＦＦの操作を行うと、Ｉｔ’ とφ
２および■２′とφ１によってトルクを生じ、回転子１
は回転し続ける。すなわち、スイッチ操作は時刻ｔ１に
おいてはスイッチＳ２を切ると同時にスイッチＳ＋’を
投入し、時刻ｔ２においてはスイッチＳ２を投入すると
同時にスイッチ８２’を切る。以下同様な要領でスイッ
チ操作を行うことによって回転子１は回転し続ける。時
刻ｔ５のスイッチ操作は時刻ｔ１のスイッチ操作に戻る
。Therefore, the switch 81 connected in series to the stator winding 3
．． 82 and a switch S connected in series to the stator winding 4
When I' and S2'' are turned on and off according to the time schedule shown in Figure 4, It' and φ
Torque is generated by 2 and ■2' and φ1, and rotor 1
continues to rotate. That is, at time t1, switch S2 is turned off and switch S+' is turned on, and at time t2, switch S2 is turned on and switch 82' is turned off at the same time. Thereafter, the rotor 1 continues to rotate by performing switch operations in the same manner. The switch operation at time t5 returns to the switch operation at time t1.
要するに、一方の固定子巻線に整流電流を流している時
は他方の固定子巻線には交流電流を流すようにする。し
かも整流電流の極性を交互に転換する。なお、トルクは
過渡現象が減衰しても一方の固定子巻線に整流電流を流
している時に他方の固定子巻線には交流電流を流してい
るので、その交流電流の作る交番磁束と固定子に流れる
整流電流との間にトルクを生じる。In short, when rectified current is flowing through one stator winding, alternating current is caused to flow through the other stator winding. Moreover, the polarity of the rectified current is alternately switched. Furthermore, even if the transient phenomenon is attenuated, the torque is determined by the alternating magnetic flux created by the alternating current and the fixed A torque is generated between the rectified current flowing through the coil and the rectified current flowing through the coil.
この可変速電動機の回転速度はトルク制御によって行う
。すなわち、電圧調整装置６，７の出力電圧を調整する
ことによって固定子巻線３゜４に流れる電流ＩＩ、Ｉ２
を調整すれば、トルクを制御することができる。またス
イッチ操作の周期を変えることによってもある程度トル
クを制御することができる。本スイッチ操作の周期と回
転子１の回転速度は直接には関係がなく、スイッチ操作
の周期を一定とした場合、回転子１の回転数は負荷が大
きくなると低くなり、負荷が小さくなると増大する。The rotational speed of this variable speed electric motor is controlled by torque control. That is, by adjusting the output voltages of the voltage regulators 6 and 7, the currents II and I2 flowing through the stator windings 3.4 are
The torque can be controlled by adjusting. Torque can also be controlled to some extent by changing the cycle of switch operation. There is no direct relationship between the cycle of this switch operation and the rotation speed of the rotor 1.If the cycle of switch operation is constant, the rotation speed of the rotor 1 decreases as the load increases, and increases as the load decreases. .
インバータやサイクロンコンバータを用いた可変速電動
機においては、固定子巻線に流れる電流の極性切換の周
期が回転子の回転数を大きく支配するが、本発明の可変
速電動機は極性切換の周期にはあまり支配されず、直流
機のような特性を一部もっている。In a variable speed motor using an inverter or a cyclone converter, the period of polarity switching of the current flowing through the stator winding largely controls the rotation speed of the rotor. It is not controlled very much and has some of the characteristics of a DC machine.
本発明の可変速電動機は過渡現象を利用してトルクを出
すと同時に交流電流によって作られる交番磁束と回転子
に流れる整流電流によってもトルクを出すので、過渡現
象の時定数には必ずしも支配されないで、重畳効果によ
って大きなトルクを出すことができる。The variable speed motor of the present invention uses transient phenomena to produce torque, and at the same time produces torque by alternating magnetic flux created by alternating current and rectified current flowing through the rotor, so it is not necessarily controlled by the time constant of transient phenomena. , it is possible to generate large torque due to the superposition effect.
本発明の実施例においては、巻線３と巻線４を設け、そ
れらのつくる磁束の方向が電気角で９０°になるように
固定子に巻装したが、必ずしも電気角で９０°に限定さ
れるものではなく固定子上の巻線の位置を適宜選択する
ことにより相応の特性が得られる。更に巻線の数も２個
に限定されるものではなくそれ以上でもよい。In the embodiment of the present invention, the winding 3 and the winding 4 are provided and wound around the stator so that the direction of the magnetic flux produced by them is 90 degrees in electrical angle, but it is not necessarily limited to 90 degrees in electrical angle. Appropriate characteristics can be obtained by appropriately selecting the position of the winding on the stator, rather than by selecting the position of the winding on the stator. Further, the number of windings is not limited to two, and may be more than two.
本発明の実施例の整流装置にはダイオードを利用してい
るがサイリスタ等の整流装置を用いてもよい。Although diodes are used in the rectifier in the embodiments of the present invention, a rectifier such as a thyristor may also be used.
なお、固定子巻線のつくる交番磁束と回転子に流れる整
流電流の位相が同相になるように両固定子巻線に印加す
る電源電圧の位相を調整すめばトルクは大きくなる。Note that the torque can be increased by adjusting the phase of the power supply voltage applied to both stator windings so that the alternating magnetic flux produced by the stator windings and the rectified current flowing through the rotor are in phase.
本発明の可変速電動機はブラシがないので保守が簡単と
なり、また整流装置が使用されているものの、−設差流
器のように脈動の少ない直流電圧にするための平滑回路
を必要とせず、脈流をそのままの状態で利用しているの
で高調波の発生が少ない。また、電波の発生もない。The variable speed motor of the present invention has no brushes, so maintenance is easy, and although a rectifier is used, it does not require a smoothing circuit to create a DC voltage with less pulsation, unlike a differential current converter. Since the pulsating flow is used as it is, there are fewer harmonics. Also, no radio waves are generated.
また、本発明の可変速電動機は過渡現象を利用してトル
クを出すと同時に交流電流によってつくられる交番磁束
と回転子に流れる整流電流によってもトルクを出すので
重畳効果により大きなトルクを出すことができる。更に
整流電流を利用しているのでインダクタンスの影響が少
なく、従って力率が良くなるために、特に低速領域にお
ける効率が良くなる。更にトルク特性を簡単に変えるこ
とができ、容易に可変速することができる。また従来の
誘導電動機のように回転磁界によってトルクを発生する
のではなく、過渡時の直流分磁束と交番磁束を利用して
いるので、すべり損失が少なく効率が良い。In addition, the variable speed motor of the present invention utilizes transient phenomena to generate torque, and at the same time generates torque using alternating magnetic flux created by alternating current and rectified current flowing through the rotor, making it possible to generate large torque due to the superposition effect. . Furthermore, since a rectified current is used, the influence of inductance is small, and the power factor is therefore improved, resulting in improved efficiency, especially in the low speed range. Furthermore, the torque characteristics can be easily changed and the speed can be easily varied. In addition, unlike conventional induction motors, torque is not generated by a rotating magnetic field, but instead utilizes DC component magnetic flux and alternating magnetic flux during transient periods, resulting in low slip loss and high efficiency.
第１図〜第４図は本発明の実施例図であり、第１図は固
定子と回転子の関係を示す断面説明図、第２図はシステ
ムの構成図、第３図は固定子電流と回転子電流と磁束の
説明図、第４図はスイッチ操作の説明図である。Figures 1 to 4 show examples of the present invention. Figure 1 is a cross-sectional explanatory diagram showing the relationship between the stator and rotor, Figure 2 is a system configuration diagram, and Figure 3 is a stator current. FIG. 4 is an explanatory diagram of rotor current and magnetic flux, and FIG. 4 is an explanatory diagram of switch operation.
Claims (2)
定子には少なくとも２個の巻線をそれぞれの巻線がつく
る磁束の方向が一致しないように巻装し、前記それぞれ
の巻線に直列に、逆極性に並列に接続したサイリスタま
たは直列にスイッチを連結したダイオードを逆極性に並
列に接続したものを連結し、前記サイリスタまたはスイ
ッチはスイッチ制御装置に連結し、前記それぞれの巻線
のうち少なくとも１個には電圧調整装置を連結するとと
もに前記それぞれの巻線を電圧の位相の異なる交流電源
に接続するようになしたことを特徴とする可変速電動機
。(1) A stator is provided facing the outer periphery of the rotor, and at least two windings are wound on the stator so that the directions of magnetic flux produced by each winding do not match, and each of the above-mentioned A thyristor connected in parallel with opposite polarity or a diode connected in series with a switch connected in parallel with opposite polarity is connected in series with the winding, said thyristor or switch is connected to a switch control device, and said respective A variable speed electric motor, characterized in that a voltage regulator is connected to at least one of the windings, and each of the windings is connected to an alternating current power source having a different voltage phase.
、それぞれの巻線がつくる磁束の方向のずれが電気角で
９０°になるように固定子に巻装した特許請求の範囲第
（１）項記載の可変速電動機。(2) The at least two windings are two windings, and the windings are wound around the stator so that the direction of the magnetic flux produced by each winding is 90 degrees in electrical angle. Variable speed electric motor according to scope item (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61266301A JPS63121495A (en) | 1986-11-07 | 1986-11-07 | Variable speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61266301A JPS63121495A (en) | 1986-11-07 | 1986-11-07 | Variable speed motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63121495A true JPS63121495A (en) | 1988-05-25 |
Family
ID=17429035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61266301A Pending JPS63121495A (en) | 1986-11-07 | 1986-11-07 | Variable speed motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63121495A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014522220A (en) * | 2011-08-11 | 2014-08-28 | 順新 周 | A control system that changes the input power simultaneously according to changes in load and rotation speed by driving multiple motors with one bridge inverter |
-
1986
- 1986-11-07 JP JP61266301A patent/JPS63121495A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014522220A (en) * | 2011-08-11 | 2014-08-28 | 順新 周 | A control system that changes the input power simultaneously according to changes in load and rotation speed by driving multiple motors with one bridge inverter |
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