JPS63274382A - Regenerating circuit for power source - Google Patents
Regenerating circuit for power sourceInfo
- Publication number
- JPS63274382A JPS63274382A JP10725587A JP10725587A JPS63274382A JP S63274382 A JPS63274382 A JP S63274382A JP 10725587 A JP10725587 A JP 10725587A JP 10725587 A JP10725587 A JP 10725587A JP S63274382 A JPS63274382 A JP S63274382A
- Authority
- JP
- Japan
- Prior art keywords
- power
- circuit
- induction motor
- resistor
- regeneration
- 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
- 230000001172 regenerating effect Effects 0.000 title abstract description 8
- 230000006698 induction Effects 0.000 claims abstract description 27
- 238000009499 grossing Methods 0.000 claims abstract description 16
- 230000008929 regeneration Effects 0.000 claims description 23
- 238000011069 regeneration method Methods 0.000 claims description 23
- 239000004065 semiconductor Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 101150072109 trr1 gene Proteins 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はカ行制御および回生制御を行う誘導電動機駆動
回路における電源回生回路に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a power regeneration circuit in an induction motor drive circuit that performs power flow control and regeneration control.
（従来の技術）
誘導電動機は駆動する負荷の特性により加速および減速
を繰返し、その負荷トルクが正および負に変化する場合
がある。(Prior Art) An induction motor repeatedly accelerates and decelerates depending on the characteristics of the load being driven, and the load torque may change between positive and negative.
そして減速時の回転エネルギーを処理する方法として種
々の制御手段があるが、電気的制動手段として回転エネ
ルギーを電力に変換して電源に送電する回生制御回路が
広く用いられている。There are various control means for processing rotational energy during deceleration, but a regeneration control circuit that converts rotational energy into electric power and transmits it to a power source is widely used as an electric braking means.
第３図はこの種の回生制御回路の一例を示す回路図であ
り、誘導電動機の駆動時には三相電源を直流に変換して
インバータにて交流電力として誘導電動機に供給し、電
力回生時には誘導電動機からの電力を整流後、トランジ
スタブリッジによる回生制御回路にて交流電力に変換し
、電力回生を行っている。Figure 3 is a circuit diagram showing an example of this type of regeneration control circuit.When driving an induction motor, the three-phase power is converted to DC and supplied to the induction motor as AC power using an inverter.When regenerating power, the induction motor After the power is rectified, it is converted to AC power by a regeneration control circuit using a transistor bridge, and the power is regenerated.
同図において、ダイオードＤ１〜Ｄ６にて三相全波整流
回路を形成し、直流に変換された電力はコンデンサ０１
〜Ｃ３の平滑回路を介してトランジスタＴｒ、、〜Ｔｒ
、、にて構成されるトランジスタインバータに供給され
る。そして図示していない制御回路からの指令信号によ
り、電圧および周波数が制御されて変換された交流電力
が誘導電動機Ｍに供給されて所定の回転速度で運転され
る。In the same figure, diodes D1 to D6 form a three-phase full-wave rectifier circuit, and the power converted to DC is transferred to capacitor 01.
Transistors Tr, , ~Tr through the smoothing circuit of ~C3
, , is supplied to a transistor inverter composed of . Then, the voltage and frequency are controlled by a command signal from a control circuit (not shown), and the converted AC power is supplied to the induction motor M, which is operated at a predetermined rotational speed.
回生作動を行う場合は、減速時に生ずる誘導電動機Ｍの
誘起電圧をダイオードＤ目〜０１６の三相整流回路で直
流に変換し、Ｃ８〜Ｃ３の平滑回路を介してトランジス
タブリッジＴ ’ｔ Ｉ〜Ｔｒａよりなる回生制御回路
により交流電力に変換し、電源に回生させて回生制御を
行っている。When performing regenerative operation, the induced voltage of the induction motor M that occurs during deceleration is converted into direct current by the three-phase rectifier circuit of diodes D to 016, and then passed through the smoothing circuit of C8 to C3 to the transistor bridge T't I to Tra. A regeneration control circuit consisting of the following converts the AC power into AC power, which is then regenerated by the power supply to perform regeneration control.
この外、トランジスタブリッジＴｒｌＮＴｒ６の代りに
サイリスタブリッジを用いた回生回路も用いられている
。In addition, a regeneration circuit using a thyristor bridge in place of the transistor bridge TrlNTr6 is also used.
（発明が解決しようとする問題点）
上述のような回生回路においては誘導電動機の誘起電力
が直流に変換されて平滑されるため、回生時の交流周期
の一時期にはトランジスタブリッジＴｒ、〜Ｔｒａには
大電流が流れ、トランジスタが発熱するので、電流を制
限する複雑な制御回路として例えばＰＷＭ制御回路が用
いられていた。(Problem to be Solved by the Invention) In the regeneration circuit as described above, the induced power of the induction motor is converted to DC and smoothed, so that during a period of the AC cycle during regeneration, the transistor bridges Tr, ~Tra Since a large current flows and the transistor generates heat, a PWM control circuit, for example, has been used as a complicated control circuit to limit the current.
本発明はこのような問題に鑑みてなされたものであり、
その目的は減速時の誘導電動機からの誘導起電力を整流
しブリッジ回路により交流電力に変換して電源回生する
回路に抵抗器とダイオードとを接続して電流制限を行い
従来の問題点を解消しようとする電源回生回路を提供す
るにある。The present invention was made in view of such problems,
The purpose is to rectify the induced electromotive force from the induction motor during deceleration, convert it to AC power using a bridge circuit, and connect a resistor and diode to the circuit that regenerates the power to limit the current and solve the conventional problems. The aim is to provide a power regeneration circuit for this purpose.
（問題点を解決するための手段）
本発明によれば、三相電力を整流平滑後インバータにて
交流周波数および電圧を制御して誘導電動機を駆動する
とともに、該誘導電動機の減速時にはその誘導起電力を
整流平滑し半導体ブリッジ回路により交流電力に変換し
て電源回生を行う電源回生回路において、前記電源回生
時に整流平滑する回路と半導体ブリッジ回路との間に、
逆方向接続のダイオードと抵抗器との並列回路を挿入し
た電源回生回路が提供される。(Means for Solving Problems) According to the present invention, after rectifying and smoothing three-phase power, an inverter controls the AC frequency and voltage to drive an induction motor, and when the induction motor is decelerated, the induction motor is In a power regeneration circuit that performs power regeneration by rectifying and smoothing electric power and converting it into AC power by a semiconductor bridge circuit, between the circuit that rectifies and smoothes power during power regeneration and the semiconductor bridge circuit,
A power regeneration circuit is provided in which a parallel circuit of a reversely connected diode and a resistor is inserted.
（作用）
本発明では減速時の誘導電動機からの起電力を整流して
平滑する回路と交流電力に変換するブリッジ回路との間
に逆方向接続のダイオードと抵抗器との並列回路を挿入
したので、減速時の電力回生には平滑回路からブリッジ
回路への電流をダイオードが阻止して、抵抗器により制
限された電流がブリッジ回路に供給されるとともに、誘
導電動機のカ行作動時にはダイオードが順方向のため十
分な電流が供給される作用がある。(Function) In the present invention, a parallel circuit of a reversely connected diode and a resistor is inserted between the circuit that rectifies and smoothes the electromotive force from the induction motor during deceleration and the bridge circuit that converts it into AC power. For power regeneration during deceleration, the diode blocks the current from the smoothing circuit to the bridge circuit, and the current limited by the resistor is supplied to the bridge circuit, and when the induction motor is running in the forward direction, the diode blocks the current flowing from the smoothing circuit to the bridge circuit. Therefore, sufficient current is supplied.
（実施例）
つぎに本発明の実施例について図面を用いて詳細に説明
する。(Example) Next, an example of the present invention will be described in detail using the drawings.
第１図は本発明の一実施例を示す回路図であり、同図に
おいて、ＭＣＣは回路開閉器、ＡＣＲはりアクドルであ
り、ダイオードＤ１〜Ｄ６をそれぞれ並列に有するＴｒ
ｔ〜Ｔｒａのオン・オフ制御を行うブリッジ回路と接続
されている。モして誘導電動機Ｍのカ行駆動時は三相交
流電源Ｕ。FIG. 1 is a circuit diagram showing one embodiment of the present invention, in which MCC is a circuit breaker, ACR beam handle, and Tr having diodes D1 to D6 in parallel.
It is connected to a bridge circuit that performs on/off control of t~Tra. When the induction motor M is driven in the opposite direction, the three-phase AC power supply U is used.
■、Ｗからの電力をＤ１〜Ｄ６に供給して整流作動させ
直流に変換させるとともに、誘導電動機Ｍが電力回生時
にはＴｒ、〜Ｔｒ６によりオン・オフ制御された出力を
電源に回生ずる通電回路となるものである。■A current-carrying circuit that supplies the power from W to D1 to D6 to rectify it and convert it to DC, and when the induction motor M regenerates power, the output is controlled on and off by Tr, ~Tr6 and regenerates it into the power source. It is what it is.
Ｔｒ■〜Ｔｒ、、は力行駆動時に平滑コンデンサＣ２か
らの直流電力を交流電力に変換するインバータ回路であ
り、コントローラＲＣからの制御信号により交流出力の
電圧および周波数が制御され、誘導電動機Ｍの回転数や
トルクを制御するよう構成されている。なお、フライバ
ックダイオードとしてそれぞれのトランジスタに並列接
続されているり、〜Ｄ１８は減速時の誘導電動機Ｍの誘
起電力を整流して平滑コンデンサＣ２に送電するもので
ある。Tr■ to Tr, are inverter circuits that convert DC power from the smoothing capacitor C2 into AC power during power running, and the voltage and frequency of the AC output are controlled by control signals from the controller RC, and the rotation of the induction motor M is controlled by the control signal from the controller RC. It is configured to control the number and torque. A flyback diode is connected in parallel to each transistor, and D18 rectifies the induced power of the induction motor M during deceleration and transmits the rectified power to the smoothing capacitor C2.
抵抗器Ｒ０とダイオードＤＩＧとは平滑コンデンサＣ２
と前記のＴｒ、ｘＴｒ、のオン・オフ制御のブリッジ回
路（ＤＩ〜Ｄ６の整流回路）に接続され、ダイオードＤ
、。の導通方向は力行駆動時にり、〜Ｄ６の整流回路よ
りＴｒ、、〜Ｔ ｒ 、、のインバータ回路に通電する
よう接続されている。Resistor R0 and diode DIG are smoothing capacitor C2
is connected to a bridge circuit (rectifier circuit of DI to D6) for on/off control of the Tr and xTr, and a diode D
,. The direction of conduction is during power running, and the rectifier circuit ~D6 is connected to the inverter circuits Tr, . . . ~Tr, .
なお、Ｔｒ、〜Ｔｒａのブリッジ回路は第２図に示すよ
うに交流周期の１／６期間Ａをオンとして回生電流を電
源方向に通ずるものであり、Ｕ。As shown in FIG. 2, the bridge circuits of Tr and Tra are turned on during 1/6 period A of the AC cycle to pass regenerative current toward the power supply.
Ｖ、Ｗは三相のオン期間に流れる電流を示すものである
。V and W indicate currents flowing during the three-phase on period.
また、第１図に示すＣＤは電流検出器であり、それぞれ
検出した電流信号をコントローラＲＣに送信するよう構
成されている。Moreover, CD shown in FIG. 1 is a current detector, and is configured to transmit detected current signals to the controller RC.
このように構成された本実施例では誘導電動機のカ行駆
動時には、Ｄ１〜Ｄ６にて全波整流した脈流をダイオー
ドＤ、。を介して平滑コンデンサＣ２に通電し、平滑さ
れた直流が供給されるＴｒｒ １”” Ｔ ｒ １６の
インバータ回路により所定電圧、周波数の交流電力が誘
導電動機Ｍに送電されて運転される。In this embodiment configured as described above, when the induction motor is driven in reverse, the pulsating current that is full-wave rectified by D1 to D6 is passed through the diode D. AC power of a predetermined voltage and frequency is transmitted to the induction motor M and operated by the inverter circuit of Trr 1"" T r 16, which supplies current to the smoothing capacitor C2 via the smoothing capacitor C2 and supplies smoothed DC.
一方、負荷の状態により誘導電動機Ｍが減速状態となっ
て発電作動を行うときは、その誘導起電力はＤＩｌ〜Ｄ
Ｉ６により全波整流され平滑コンデンサに送電される。On the other hand, when the induction motor M is decelerated due to the load condition and performs power generation operation, the induced electromotive force is DIl~D
The power is full-wave rectified by I6 and transmitted to the smoothing capacitor.
そして、平滑された直流電力はダイオードＤ１゜が逆方
向のため、抵抗器Ｒ１により制限された電流がＴｒ１〜
Ｔｒａのブリッジ回路に供給される。該ブリッジ回路は
コントローラＲＣからの制御信号により、第２図に示す
Ａの期間はオンとなって電流を通過させるので、抵抗器
Ｒ１を介して電源にＵ、Ｖ、Ｗの電流が回生されること
になる。Since the diode D1° is in the opposite direction, the smoothed DC power is limited by the resistor R1, and the current is Tr1~
Supplied to the bridge circuit of Tra. The bridge circuit is turned on during the period A shown in FIG. 2 by a control signal from the controller RC and allows current to pass through, so currents U, V, and W are regenerated to the power supply via the resistor R1. It turns out.
なお、抵抗器Ｒ１の抵抗値は、回生時にＴ ｒ Ｉ Ｎ
Ｔ ｒ ６のそれぞれに過大な電流が流れるのを防止す
る抵抗値に設定しであるので、抵抗器Ｒ３の発熱は小と
なるものである。Note that the resistance value of resistor R1 is T r I N during regeneration.
Since the resistance value is set to prevent excessive current from flowing through each of T r 6, the heat generation of the resistor R3 is small.
以上本発明を一実施例により説明したが、本発明の主旨
の範囲内で種々の変形が可能であり、これらを本発明の
範囲から排除するものではない。Although the present invention has been described above using one embodiment, various modifications are possible within the scope of the gist of the present invention, and these are not excluded from the scope of the present invention.
（発明の効果）
本発明によれば、減速時の誘導電動機の誘導起電力を整
流後平滑する回路と交流電力に変換するブリッジ回路と
の間に逆方向接続のダイオードと抵抗器との並列回路を
挿入したので、ダイオードにより阻止された回生電力は
抵抗器により制限された電流がブリッジに供給されて、
三相周期の所定期間のみ電源に回生されるため、誘導電
動機からの電力回生能力が向上して回生制動効率が良好
となる効果がある。(Effects of the Invention) According to the present invention, a parallel circuit of a diode and a resistor connected in the opposite direction is connected between a circuit that rectifies and smoothes the induced electromotive force of an induction motor during deceleration and a bridge circuit that converts it into AC power. Since the regenerative power is blocked by the diode, the current limited by the resistor is supplied to the bridge.
Since the power is regenerated only during a predetermined period of the three-phase cycle, the ability to regenerate power from the induction motor is improved and regenerative braking efficiency is improved.
また本発明によればブリッジ回路に流れる電流を抵抗器
により制限するので、例えばＰＷＭ制御のような複雑な
制限回路を必要とせずに単なるオン・オフ制御のみで電
力回生が制御でき、このためトランジスタの負荷も軽減
されてその発熱量も減少する効果が得られる。Furthermore, according to the present invention, since the current flowing through the bridge circuit is limited by a resistor, power regeneration can be controlled by simple on/off control without the need for a complicated limiting circuit such as PWM control. This has the effect of reducing the load and the amount of heat generated.
第１図は本発明の一実施例を示す回路図、第２図は本実
施例の回生作動の説明図、第３図は従来の回生制御回路
の一例を示す回路図である。
Ｔｒ、〜Ｔｒ６・・・トランジスタブリッジ回路、Ｄ、
〜Ｄ６．ＤＩｌ〜ＤＩ６・・・三相整流回路、Ｄｌ。・
・・ダイオード、Ｒ３・・・抵抗器、ＲＣ・・・コント
ローラ。FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram of the regeneration operation of this embodiment, and FIG. 3 is a circuit diagram showing an example of a conventional regeneration control circuit. Tr, ~Tr6...transistor bridge circuit, D,
~D6. DIl to DI6...Three-phase rectifier circuit, Dl.・
...Diode, R3...Resistor, RC...Controller.
Claims (1)
電圧を制御して誘導電動機を駆動するとともに、該誘導
電動機の減速時にはその誘導起電力を整流平滑し半導体
ブリッジ回路により交流電力に変換して電源回生を行う
電源回生回路において、前記電源回生時に整流平滑する
回路と半導体ブリッジ回路との間に、逆方向接続のダイ
オードと抵抗器との並列回路を直列接続したことを特徴
とする電源回生回路。After rectifying and smoothing the three-phase power, an inverter controls the AC frequency and voltage to drive the induction motor, and when the induction motor decelerates, the induced electromotive force is rectified and smoothed, and a semiconductor bridge circuit converts it into AC power to generate a power source. A power regeneration circuit that performs regeneration, characterized in that a parallel circuit of a reversely connected diode and a resistor is connected in series between the rectifying and smoothing circuit during power regeneration and the semiconductor bridge circuit.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10725587A JPS63274382A (en) | 1987-04-30 | 1987-04-30 | Regenerating circuit for power source |
| US07/274,148 US4928052A (en) | 1987-04-30 | 1988-04-27 | Power supply regenerating circuit |
| PCT/JP1988/000417 WO1988008639A1 (en) | 1987-04-30 | 1988-04-27 | Power source regeneration circuit |
| EP19880903932 EP0314801A4 (en) | 1987-04-30 | 1988-04-27 | Power source regeneration circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10725587A JPS63274382A (en) | 1987-04-30 | 1987-04-30 | Regenerating circuit for power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63274382A true JPS63274382A (en) | 1988-11-11 |
Family
ID=14454414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10725587A Pending JPS63274382A (en) | 1987-04-30 | 1987-04-30 | Regenerating circuit for power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63274382A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994003966A1 (en) * | 1992-08-06 | 1994-02-17 | Fanuc Ltd | Power regeneration system |
| JP2006074879A (en) * | 2004-09-01 | 2006-03-16 | Muscle Corp | Power regeneration method and power regeneration device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS609384A (en) * | 1983-06-28 | 1985-01-18 | Yaskawa Electric Mfg Co Ltd | Power regeneration control circuit of inverter |
| JPS60207475A (en) * | 1984-03-30 | 1985-10-19 | Toshiba Corp | Controller for elevator |
| JPS6240074A (en) * | 1985-08-14 | 1987-02-21 | Fanuc Ltd | Controller for three-phase induction motor |
-
1987
- 1987-04-30 JP JP10725587A patent/JPS63274382A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS609384A (en) * | 1983-06-28 | 1985-01-18 | Yaskawa Electric Mfg Co Ltd | Power regeneration control circuit of inverter |
| JPS60207475A (en) * | 1984-03-30 | 1985-10-19 | Toshiba Corp | Controller for elevator |
| JPS6240074A (en) * | 1985-08-14 | 1987-02-21 | Fanuc Ltd | Controller for three-phase induction motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994003966A1 (en) * | 1992-08-06 | 1994-02-17 | Fanuc Ltd | Power regeneration system |
| US5491392A (en) * | 1992-08-06 | 1996-02-13 | Fanuc Ltd. | Power source regenerative apparatus |
| JP2006074879A (en) * | 2004-09-01 | 2006-03-16 | Muscle Corp | Power regeneration method and power regeneration device |
| JP4719847B2 (en) * | 2004-09-01 | 2011-07-06 | マッスル株式会社 | Power regeneration method and power regeneration device |
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