JPH05184158A - Inverter unit - Google Patents
Inverter unitInfo
- Publication number
- JPH05184158A JPH05184158A JP4000988A JP98892A JPH05184158A JP H05184158 A JPH05184158 A JP H05184158A JP 4000988 A JP4000988 A JP 4000988A JP 98892 A JP98892 A JP 98892A JP H05184158 A JPH05184158 A JP H05184158A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- transistor
- capacitor
- storage battery
- power
- 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
Landscapes
- Stopping Of Electric Motors (AREA)
- Inverter Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、交流電動機の可変速
制御を行なうインバータ装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter device for performing variable speed control of an AC motor.
【０００２】[0002]
【従来の技術】図３は、交流電動機の回生制動を実施す
るために抵抗器及びトランジスタを備えた従来のインバ
ータ装置である。図において、１は交流電源、２は交流
電源１から供給される交流を直流に変換するダイオード
ブリッジ、３は平滑用の電解コンデンサ、４は直流を交
流に逆変換して交流電動機に供給するトランジスタブリ
ッジ、５はインバータ装置の負荷としての交流電動機、
６はコンデンサ３の両端の電圧を検出するための電圧検
出回路、７は回生電力を消費するための抵抗器、８は抵
抗器７に電流を流すためのトランジスタ、９はインバー
タ装置の制御を行なう制御装置である。2. Description of the Related Art FIG. 3 shows a conventional inverter device having a resistor and a transistor for performing regenerative braking of an AC motor. In the figure, 1 is an AC power supply, 2 is a diode bridge for converting the AC supplied from the AC power supply 1 into DC, 3 is an electrolytic capacitor for smoothing, 4 is a transistor for inversely converting DC into AC and supplying the AC motor. The bridge 5 is an AC motor as a load of the inverter device,
6 is a voltage detection circuit for detecting the voltage across the capacitor 3, 7 is a resistor for consuming regenerative electric power, 8 is a transistor for supplying a current to the resistor 7, and 9 is a control device for the inverter device. It is a control device.
【０００３】次に動作について説明する。交流電源１か
ら供給される交流はダイオードブリッジ２で直流に変換
され、コンデンサ３を充電し平滑される。さらにトラン
ジスタブリッジ４で任意の電圧及び周波数の交流に逆変
換し、負荷である交流電動機５に供給する。Next, the operation will be described. The alternating current supplied from the alternating current power supply 1 is converted into direct current by the diode bridge 2, and the capacitor 3 is charged and smoothed. Further, it is converted back into an alternating current of an arbitrary voltage and frequency by the transistor bridge 4 and supplied to the alternating current electric motor 5 as a load.
【０００４】図４（ａ）に回生制動時のコンデンサ３の
端子電圧ｖ１を示す。交流電動機５からの回生電力はト
ランジスタブリッジ４が順変換器として動作しコンデン
サ３を充電する。図４（ａ）のＡ点にて、コンデンサ３
の端子電圧が上昇したことを電圧検出回路６により検出
し、制御装置９はトランジスタ８をオンして回生電力を
抵抗器７で消費する。制御装置９はコンデンサ３の端子
電圧がｖ３を下回る図４（ａ）のＢ点までトランジスタ
８をオンしている。即ち、回生電力を抵抗器７で消費す
ることでコンデンサ３の端子電圧ｖ１の上昇を抑制し回
生制動力を得る効果がある。FIG. 4A shows the terminal voltage v1 of the capacitor 3 during regenerative braking. The regenerative power from the AC motor 5 causes the transistor bridge 4 to operate as a forward converter to charge the capacitor 3. At the point A in FIG.
The voltage detection circuit 6 detects that the terminal voltage has risen, and the control device 9 turns on the transistor 8 so that the resistor 7 consumes the regenerative power. The control device 9 keeps the transistor 8 on until the terminal voltage of the capacitor 3 is lower than v3 until point B in FIG. 4 (a). That is, by consuming the regenerative power in the resistor 7, it is possible to suppress the rise of the terminal voltage v1 of the capacitor 3 and obtain the regenerative braking force.
【０００５】[0005]
【発明が解決しようとする課題】従来のインバータ装置
は以上のように構成されているので、図５に示すように
抵抗器７の温度はトランジスタ８のオン期間により上昇
し、抵抗器７の発火を防ぐためにＥ点でトランジスタ８
をオフ（オンを禁止）する必要があり、コンデンサ３の
端子電圧ｖ２はＦ点でインバータ装置の保護レベルを上
回り、交流電動機の可変速制御を停止しなければならな
いという問題点があった。また、回生電力を抵抗器７に
より熱として消費してしまうという問題点があった。Since the conventional inverter device is constructed as described above, the temperature of the resistor 7 rises due to the ON period of the transistor 8 as shown in FIG. 5, and the resistor 7 is ignited. Transistor 8 at point E to prevent
Has to be turned off (prohibited to be turned on), the terminal voltage v2 of the capacitor 3 exceeds the protection level of the inverter device at point F, and the variable speed control of the AC motor must be stopped. Further, there is a problem that the regenerative power is consumed as heat by the resistor 7.
【０００６】この発明は上記のような問題点を解決する
ためになされたもので、インバータ装置に回生電力を蓄
電池等に充電する充電手段を備え、回生制動を行なうイ
ンバータ装置を得ることを目的とする。The present invention has been made in order to solve the above problems, and an object thereof is to provide an inverter device which is provided with charging means for charging a storage battery or the like with regenerative electric power and which performs regenerative braking. To do.
【０００７】[0007]
【課題を解決するための手段】この発明に係わるインバ
ータ装置は回生制動力を得るために、回生電力を蓄電池
等に充電する充電手段を備えたものである。In order to obtain a regenerative braking force, an inverter device according to the present invention comprises a charging means for charging regenerative power to a storage battery or the like.
【０００８】[0008]
【作用】この発明における充電手段は、回生電力を蓄電
池等に充電することで回生制動力を得るとともに、回生
電力を蓄電池等に蓄えることを可能とする。The charging means according to the present invention makes it possible to obtain regenerative braking force by charging regenerative power to a storage battery or the like and store the regenerative power in the storage battery or the like.
【０００９】[0009]
【実施例】実施例１．図１はこの発明の一実施例を示す
図である。図１において１０は回生電力を蓄電池等に充
電するための充電手段、１１は充電手段１０により充電
が行なわれる蓄電池、１３は充電手段１０において蓄電
池１１に電流を流すためのトランジスタ、１４は蓄電池
１１に流れる電流を検出する電流検出器である。その他
図中、従来例と同じ符号で示されたものは従来例のそれ
と同一もしくは同等なものを示す。EXAMPLES Example 1. FIG. 1 is a diagram showing an embodiment of the present invention. In FIG. 1, 10 is a charging means for charging the storage battery or the like with regenerative power, 11 is a storage battery charged by the charging means 10, 13 is a transistor for supplying a current to the storage battery 11 in the charging means 10, and 14 is a storage battery 11. It is a current detector that detects the current flowing through the device. In the other figures, the components denoted by the same reference numerals as those of the conventional example are the same as or equivalent to those of the conventional example.
【００１０】次に動作について説明する。交流電動機５
からの回生電力はトランジスタブリッジ４が順変換器と
して動作しコンデンサ３を充電する。このときのコンデ
ンサ３の端子電圧の変化は図３に示した従来例と同一で
図４（ａ）のＡ点にて、コンデンサ３の端子電圧が上昇
したことを電圧検出回路６により検出し、制御装置９は
充電手段１０のトランジスタ１３を動作させ回生電力を
蓄電池１１に充電する。制御装置９はコンデンサ３の端
子電圧がｖ３を下回る図４（ａ）のＢ点まで充電手段１
０を動作させている。また、電流検出器１４により蓄電
池１１に流れる電流を検出し制御装置９により、充電手
段１０のトランジスタ１３の動作を停止させ蓄電池１１
及びトランジスタ１３の破損を防ぐ。即ち、回生電力を
蓄電池１１に充電することでコンデンサ３の端子電圧ｖ
１の上昇を抑制し回生制動力得る効果がある。また、回
生電力を蓄電池１１に蓄えることを可能とする。Next, the operation will be described. AC motor 5
The regenerative power from the transistor bridge 4 operates as a forward converter to charge the capacitor 3. The change in the terminal voltage of the capacitor 3 at this time is the same as that in the conventional example shown in FIG. 3, and at the point A in FIG. 4A, the voltage detecting circuit 6 detects that the terminal voltage of the capacitor 3 has risen, The control device 9 operates the transistor 13 of the charging means 10 to charge the storage battery 11 with regenerative power. The control device 9 controls the charging means 1 to the point B in FIG. 4A where the terminal voltage of the capacitor 3 is lower than v3.
0 is operating. Further, the current detector 14 detects the current flowing through the storage battery 11, and the controller 9 stops the operation of the transistor 13 of the charging means 10 to cause the storage battery 11 to operate.
Also, the transistor 13 is prevented from being damaged. That is, by charging the storage battery 11 with regenerative power, the terminal voltage v
This has the effect of suppressing the increase of 1 and obtaining the regenerative braking force. In addition, regenerative power can be stored in the storage battery 11.
【００１１】また、上記実施例１では蓄電池１１に電流
を流す充電手段１０の素子としてトランジスタ１３を用
いたが、素子としてはサイリスタ等他の半導体スイッチ
でもよく、上記実施例１と同様の効果が得られる。In the first embodiment, the transistor 13 is used as the element of the charging means 10 for supplying a current to the storage battery 11, but other semiconductor switches such as thyristors may be used as the element, and the same effect as in the first embodiment is obtained. can get.
【００１２】実施例２．図２はこの発明の他の実施例を
示す図である。図２において１２は蓄電池接続手段、１
５は蓄電池接続手段１２において蓄電池１１をコンデン
サ３の端子に接続する接続用接点、１６は蓄電池１１を
コンデンサ３の端子に接続したときに蓄電池１１に電流
が流れ込むことを防ぐ逆流防止ダイオードである。その
他図中、従来例と同じ符号で示されたものは従来例のそ
れと同一もしくは同等なものを示す。Example 2. FIG. 2 is a diagram showing another embodiment of the present invention. In FIG. 2, 12 is a storage battery connecting means, 1
Reference numeral 5 is a connection contact for connecting the storage battery 11 to the terminal of the capacitor 3 in the storage battery connecting means 12, and reference numeral 16 is a backflow prevention diode for preventing current from flowing into the storage battery 11 when the storage battery 11 is connected to the terminal of the capacitor 3. In the other figures, the components denoted by the same reference numerals as those of the conventional example are the same as or equivalent to those of the conventional example.
【００１３】図４（ｂ）にインバータ装置の電圧不足時
のコンデンサ３の端子電圧ｖ４を示す。停電等によりイ
ンバータ装置の電圧不足時には図４（ｂ）のｖ５のよう
にコンデンサ３の端子電圧が下降しＤ点でインバータ装
置の保護レベルを下回り、交流電動機の可変速制御を停
止する必要があった。そこでＣ点にて、コンデンサ３の
端子電圧が下降したことを電圧検出回路６により検出
し、制御装置９は蓄電池接続手段１２の接続用接点１５
を動作させ蓄電池１１をコンデンサ３の端子に接続す
る。接続することで蓄電池１１に充電された電力を使用
しコンデンサ３の端子電圧ｖ４の下降を抑制しインバー
タ装置の運転を継続することが可能となる。また、逆流
防止ダイオード１６により蓄電池１１に逆に電流が流れ
込み充電状態となることを防ぐ。FIG. 4B shows the terminal voltage v4 of the capacitor 3 when the voltage of the inverter device is insufficient. When the voltage of the inverter device is insufficient due to a power failure or the like, it is necessary to stop the variable speed control of the AC motor by lowering the terminal voltage of the capacitor 3 and lowering the protection level of the inverter device at point D as shown by v5 in FIG. 4 (b). It was Therefore, at the point C, the voltage detection circuit 6 detects that the terminal voltage of the capacitor 3 has dropped, and the control device 9 causes the connection contact 15 of the storage battery connection means 12 to connect.
Is operated to connect the storage battery 11 to the terminal of the capacitor 3. By connecting, it becomes possible to use the electric power charged in the storage battery 11 and suppress the drop of the terminal voltage v4 of the capacitor 3 to continue the operation of the inverter device. In addition, the backflow prevention diode 16 prevents a current from flowing into the storage battery 11 in reverse and enters a charging state.
【００１４】[0014]
【発明の効果】以上のように、この発明によればインバ
ータ装置が充電手段を備えたので、回生電力を蓄電池等
に充電することで回生制動力を得るとともに、回生電力
を蓄電池等に蓄えることを可能になるという効果があ
る。As described above, according to the present invention, since the inverter device has the charging means, the regenerative electric power is charged in the storage battery or the like to obtain the regenerative braking force and the regenerative electric power is stored in the storage battery or the like. The effect is that it becomes possible.
【図１】この発明の一実施例によるインバータ装置の回
路図である。FIG. 1 is a circuit diagram of an inverter device according to an embodiment of the present invention.
【図２】この発明の他の実施例によるインバータ装置の
回路図である。FIG. 2 is a circuit diagram of an inverter device according to another embodiment of the present invention.
【図３】従来のインバータ装置の回路図である。FIG. 3 is a circuit diagram of a conventional inverter device.
【図４】従来のインバータ装置及びこの発明及び他の実
施例におけるインバータ装置のコンデンサの端子電圧を
示した説明図である。FIG. 4 is an explanatory diagram showing a terminal voltage of a conventional inverter device and a capacitor of the inverter device according to the present invention and other embodiments.
【図５】従来のインバータ装置における抵抗器の温度上
昇を示した説明図である。FIG. 5 is an explanatory diagram showing a temperature rise of a resistor in a conventional inverter device.
１ 交流電源 ２ ダイオードブリッジ ３ コンデンサ ４ トランジスタブリッジ ５ 交流電動機 ６ 電圧検出回路 ７ 抵抗器 ８ トランジスタ ９ 制御装置 １０ 充電手段 １１ 蓄電池 １２ 蓄電池接続手段 １３ 充電トランジスタ １４ 電流検出器 １５ 接続用接点 １６ 逆流防止ダイオード DESCRIPTION OF SYMBOLS 1 AC power supply 2 Diode bridge 3 Capacitor 4 Transistor bridge 5 AC motor 6 Voltage detection circuit 7 Resistor 8 Transistor 9 Control device 10 Charging means 11 Storage battery 12 Storage battery connecting means 13 Charging transistor 14 Current detector 15 Connection contact 16 Reverse current prevention diode
Claims (1)
ータ装置において、交流電動機の回生制動を実施するた
め回生電力を蓄電池等に充電する充電手段を備えたこと
を特徴とするインバータ装置。1. An inverter device for performing variable speed control of an AC motor, comprising: a charging means for charging a storage battery or the like with regenerative power for performing regenerative braking of the AC motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4000988A JPH05184158A (en) | 1992-01-07 | 1992-01-07 | Inverter unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4000988A JPH05184158A (en) | 1992-01-07 | 1992-01-07 | Inverter unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05184158A true JPH05184158A (en) | 1993-07-23 |
Family
ID=11488983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4000988A Pending JPH05184158A (en) | 1992-01-07 | 1992-01-07 | Inverter unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05184158A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003199354A (en) * | 2001-12-25 | 2003-07-11 | Toshiba Corp | Power converter |
| JP2010104173A (en) * | 2008-10-24 | 2010-05-06 | Juki Corp | Motor drive |
| JP2013021760A (en) * | 2011-07-07 | 2013-01-31 | Thk Co Ltd | Motor control device |
| FR3005536A1 (en) * | 2013-05-07 | 2014-11-14 | Sofineco | DEVICE FOR RECOVERING, STORING AND RESTITUTING ELECTRICAL ENERGY FOR A HANDLING DOOR |
-
1992
- 1992-01-07 JP JP4000988A patent/JPH05184158A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003199354A (en) * | 2001-12-25 | 2003-07-11 | Toshiba Corp | Power converter |
| JP2007104899A (en) * | 2001-12-25 | 2007-04-19 | Toshiba Corp | Power converter |
| JP2007151392A (en) * | 2001-12-25 | 2007-06-14 | Toshiba Corp | Power converter |
| JP2010104173A (en) * | 2008-10-24 | 2010-05-06 | Juki Corp | Motor drive |
| JP2013021760A (en) * | 2011-07-07 | 2013-01-31 | Thk Co Ltd | Motor control device |
| FR3005536A1 (en) * | 2013-05-07 | 2014-11-14 | Sofineco | DEVICE FOR RECOVERING, STORING AND RESTITUTING ELECTRICAL ENERGY FOR A HANDLING DOOR |
| WO2014181057A3 (en) * | 2013-05-07 | 2015-11-05 | Sofineco | Device for recovering, storing and restoring electrical energy for a goods handling door |
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