JPH07312876A - Inverter device and control equipment for elevator - Google Patents
Inverter device and control equipment for elevatorInfo
- Publication number
- JPH07312876A JPH07312876A JP6101374A JP10137494A JPH07312876A JP H07312876 A JPH07312876 A JP H07312876A JP 6101374 A JP6101374 A JP 6101374A JP 10137494 A JP10137494 A JP 10137494A JP H07312876 A JPH07312876 A JP H07312876A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- charging
- closing
- smoothing capacitor
- voltage
- 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.)
- Granted
Links
Landscapes
- Elevator Control (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、コンバ−タの出力電
圧を平滑する平滑コンデンサを予備充電するインバ−タ
装置及びエレベ−タのかごを昇降する交流電動機を駆動
するインバ−タ装置に設けられたコンバ−タの出力電圧
を平滑する平滑コンデンサを予備充電するエレベ−タ制
御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided in an inverter device for precharging a smoothing capacitor for smoothing the output voltage of a converter and an inverter device for driving an AC motor for raising and lowering an elevator car. The present invention relates to an elevator control device for precharging a smoothing capacitor that smoothes the output voltage of the converter.
【０００２】[0002]
【従来の技術】図８は、例えば特公平１−１７９８５号
公報に示された従来のエレベータの制御装置に用いられ
たインバ−タ装置を示す構成図である。図において、
Ｒ、Ｓ、Ｔは三相交流電源、１は交流電源Ｒ、Ｓ、Ｔに
接続された配線用遮断器、２はダイオ−ドによる三相全
波整流回路からなりコンタクタの接点１８ａ〜１８ｃを
介して遮断器１に接続されたコンバ−タ、３はコンバ−
タ２の直流側に接続され直流出力を平滑にする平滑コン
デンサ、４は平滑コンデンサ３を予備充電する充電回
路、５は交流側がコンタクタの接点１８ａ〜１８ｃの入
力側に接続され直流側の一線がインピ−ダンス６を介し
て平滑コンデンサ３の一端に接続され、他の一線が平滑
コンデンサ３の他端に接続された充電用の整流器、７は
平滑コンデンサ３の両端に接続され直流電圧を可変電
圧、可変周波数の三相交流電力に変換するインバ−タ、
８はインバ−タ７に接続されたエレベ−タ駆動用の誘導
電動機、９は誘導電動機８が駆動する巻上機、１０はか
ご１１と釣り合い重り１２を接続するロ−プである。１
３、１４はそれぞれインピ−ダンス６の両端に接続され
た電圧検出用抵抗、１５は抵抗１３の両端に接続され、
整流器５の出力をピ−クホ−ルドするコンデンサ、１６
はそれぞれ抵抗１３、１４の電圧降下を利用した整流器
５の出力電圧を検出する電圧ＶD と平滑コンデンサ３の
出力電圧を検出する電圧ＶDC（以後、これらを電圧Ｖ
D 、電圧ＶDCと称す）を比較する比較回路、１７は比較
回路１６の出力を受けてコンタクタの接点１８ａ〜１８
ｃの開閉を制御する開閉制御手段である。尚、１００は
エレベ−タ制御装置に設けられたインバ−タ装置であ
る。2. Description of the Related Art FIG. 8 is a block diagram showing an inverter device used in a conventional elevator control device disclosed in, for example, Japanese Patent Publication No. 1-17985. In the figure,
R, S, and T are three-phase AC power supplies, 1 is a circuit breaker connected to the AC power supplies R, S, and T, and 2 is a three-phase full-wave rectifier circuit using diodes, and has contacts 18a to 18c of contactors. A converter 3 connected to the circuit breaker 1 via a converter
Smoothing capacitor connected to the DC side of the contact 2 for smoothing the DC output, 4 is a charging circuit for precharging the smoothing capacitor 3, and 5 is the AC side connected to the input side of the contactors 18a-18c of the contactor and the DC side line is A charging rectifier connected to one end of the smoothing capacitor 3 via the impedance 6 and the other line connected to the other end of the smoothing capacitor 3, and 7 connected to both ends of the smoothing capacitor 3 to change the DC voltage to a variable voltage. , An inverter for converting variable frequency three-phase AC power,
Reference numeral 8 is an induction motor for driving an elevator connected to the inverter 7, 9 is a hoisting machine driven by the induction motor 8, and 10 is a rope for connecting the car 11 and the counterweight 12. 1
Reference numerals 3 and 14 are voltage detection resistors connected to both ends of the impedance 6, respectively, and 15 is connected to both ends of the resistor 13.
A capacitor for peak-holding the output of the rectifier 5, 16
Is a voltage V D for detecting the output voltage of the rectifier 5 utilizing the voltage drops of the resistors 13 and 14, and a voltage V DC for detecting the output voltage of the smoothing capacitor 3 (hereinafter, these voltage V
D , referred to as voltage V DC ), a comparator circuit 17 receives the output of the comparator circuit 16 and contacts 18a-18 of the contactor.
Opening / closing control means for controlling opening / closing of c. Reference numeral 100 is an inverter device provided in the elevator control device.
【０００３】図９は、開閉制御手段１７の内部構成を示
す構成図である。図において、１９はマイクロコンピュ
−タであり、ＣＰＵ１９Ａ、メモリ１９Ｂ、入力回路１
９Ｃ、出力回路１９Ｄを有している。２０は主回路との
絶縁を行う絶縁回路、２１はエレベ−タの各安全をチエ
ックする安全チエック回路、２２はマイクロコンピュ−
タ１９の出力によりコンタクタの接点１８ａ〜１８ｃを
閉成する駆動回路である。FIG. 9 is a block diagram showing the internal structure of the opening / closing control means 17. In the figure, 19 is a microcomputer, which includes a CPU 19A, a memory 19B, and an input circuit 1.
9C and an output circuit 19D. 20 is an insulation circuit for insulating the main circuit, 21 is a safety check circuit for checking each safety of the elevator, and 22 is a micro computer.
It is a drive circuit that closes the contacts 18a to 18c of the contactor by the output of the contactor 19.
【０００４】次に、図８、図９に示した従来のエレベ−
タ装置の動作を図１０により説明する。図１０は、遮断
器１が投入されてから起動までのマイクロコンピュ−タ
１９が行う処理を示すフロ−チャ−トである。図におい
て、遮断器１が投入されると、整流器５とインピ−ダン
ス６を介してコンデンサ１５及び平滑コンデンサ３はそ
れぞれ充電される。しかし、コンデンサ１５の静電容量
は平滑コンデンサ３のそれより十分小さい値に選定され
ているので、電圧ＶD は電圧ＶDCよりも十分早く立ち上
がる。電圧ＶDCと電圧ＶD の差が所定値以上ある間、即
ち、充電中は比較回路１６の出力は負となり、かご１１
の起動指令が発生してもステップＳ３によってコンタク
タの接点１８ａ〜１８ｃは閉成されず、平滑コンデンサ
３への突入電流は阻止される。電圧ＶDCと電圧ＶD の差
が所定値未満となると、比較回路１６の出力は正とな
り、かご１１の起動指令が発生し、安全チエックがＯＫ
ならば、ステップＳ４においてコンタクタの接点１８ａ
〜１８ｃの閉成信号を出力し、駆動回路２２によって、
コンタクタの接点１８ａ〜１８ｃは閉成される。しか
し、このとき平滑コンデンサ３の両端電圧は、交流電源
Ｒ、Ｓ、Ｔの電圧に近接しているので、突入電流が流入
することなく、インバ−タ７によって変換された可変電
圧、可変周波数の三相交流電力が誘導電動機８に供給さ
れて、巻上機９を駆動し、かご１１は走行する。Next, the conventional elevator shown in FIGS.
The operation of the input device will be described with reference to FIG. FIG. 10 is a flowchart showing the processing performed by the microcomputer 19 from the time the circuit breaker 1 is turned on to the time it is activated. In the figure, when the circuit breaker 1 is turned on, the capacitor 15 and the smoothing capacitor 3 are charged via the rectifier 5 and the impedance 6. However, since the capacitance of the capacitor 15 is selected to be sufficiently smaller than that of the smoothing capacitor 3, the voltage V D rises sufficiently earlier than the voltage V DC . While the difference between the voltage V DC and the voltage V D is a predetermined value or more, that is, during charging, the output of the comparison circuit 16 becomes negative, and the car 11
Even if the start command is issued, the contacts 18a to 18c of the contactor are not closed in step S3, and the rush current to the smoothing capacitor 3 is blocked. When the difference between the voltage V DC and the voltage V D becomes less than a predetermined value, the output of the comparison circuit 16 becomes positive, a start command for the car 11 is generated, and the safety check is OK.
Then, in step S4, the contactor contact 18a of the contactor
The closing signal of ~ 18c is output, and by the drive circuit 22,
The contactors 18a-18c of the contactor are closed. However, at this time, since the voltage across the smoothing capacitor 3 is close to the voltage of the AC power supplies R, S, T, the inrush current does not flow in and the variable voltage and the variable frequency converted by the inverter 7 are not changed. Three-phase AC power is supplied to the induction motor 8 to drive the hoisting machine 9 and the car 11 runs.
【０００５】[0005]
【発明が解決しようとする課題】従来のインバ−タ装置
は以上のように構成されているので、平滑コンデンサ３
の予備充電中に交流電源Ｒ、Ｓ、Ｔの電圧が一時的に降
下すると、電圧ＶD は交流電源Ｒ、Ｓ、Ｔの電圧の変動
に伴い同じく変動するので、電圧ＶDCと電圧ＶDの差が
所定値よりも一時的に小さくなって、比較回路１６の出
力は正となる。比較回路１６の動作直後に起動指令が発
生し、交流電源Ｒ、Ｓ、Ｔの電圧が回復した場合、交流
電源Ｒ、Ｓ、Ｔの電圧と平滑コンデンサ３の電圧差は大
きい状態でコンタクタの接点１８ａ〜１８ｃは閉成され
るので、この電圧差による突入電流が流れることにな
る。特にエレベ−タ装置では併設されたエレベ−タ装置
の起動停止により電圧が変動するので上述の問題が発生
する機会が多く、経年的にコンタクタの接点１８ａ〜１
８ｃやコンバ−タ２のダイオ−ドを劣化させるという問
題があった。この問題を解決するために、平滑コンデン
サ３と整流器５の電圧が等しくなった時に比較回路１６
が動作するように設定すると、起動までにかなりの時間
が必要とし、場合によってはいつまで経っても起動でき
ない恐れがある。また、整流器５の入力側に昇圧トラン
スを挿入することも考えられるが、充電回路が大型化
し、且つ高価になるという問題があった。上述の問題は
従来のインバ−タ装置をエレベ−タの制御装置に用いた
例を基に説明したが、交流電源Ｒ、Ｓ、Ｔの電圧が変動
する他の用途においても同様の問題を生ずるものであ
る。Since the conventional inverter device is constructed as described above, the smoothing capacitor 3
If the voltage of the AC power supplies R, S, T temporarily drops during the pre-charging, the voltage V D also fluctuates as the voltage of the AC power supplies R, S, T fluctuates. Therefore, the voltage V DC and the voltage V D Becomes temporarily smaller than a predetermined value, and the output of the comparison circuit 16 becomes positive. When a start command is generated immediately after the operation of the comparison circuit 16 and the voltages of the AC power supplies R, S, T are recovered, the contact point of the contactor is large while the voltage difference between the AC power supplies R, S, T and the voltage of the smoothing capacitor 3 is large. Since 18a to 18c are closed, an inrush current flows due to this voltage difference. In particular, in the elevator device, since the voltage fluctuates due to the start and stop of the elevator device provided side by side, the above-mentioned problems often occur, and the contacts 18a to 1a of the contactor are aged over time.
8c and the diode of the converter 2 are deteriorated. In order to solve this problem, when the smoothing capacitor 3 and the rectifier 5 have the same voltage, the comparison circuit 16
If you set it to work, it will take a considerable amount of time to start up, and in some cases it may not start up forever. It is also possible to insert a step-up transformer on the input side of the rectifier 5, but there is a problem that the charging circuit becomes large and expensive. The above problem has been described based on the example in which the conventional inverter device is used for the elevator control device, but the same problem occurs in other applications in which the voltages of the AC power supplies R, S and T vary. It is a thing.
【０００６】この発明は上記のような問題点を解消する
ためになされたもので、第１の目的は、信頼性の高い平
滑コンデンサの充電検出を行い、インバ−タ装置の起動
時の突入電流を低減したインバ−タ装置を安価に提供す
ること。The present invention has been made to solve the above problems, and a first object thereof is to detect a charge of a smoothing capacitor with high reliability and to inrush current at the time of starting the inverter device. To provide an inverter device with reduced power consumption at low cost.
【０００７】また、第２の目的は、信頼性が高く、的確
な充電時間で平滑コンデンサの充電検出を行い、エレベ
−タのかごの起動待ち時間を短縮できるエレベ−タの制
御装置を安価に提供することにある。A second object is to reduce the cost of an elevator control device which is highly reliable and can detect the charging of the smoothing capacitor in an appropriate charging time and shorten the waiting time for starting the elevator car. To provide.
【０００８】[0008]
【課題を解決するための手段】この発明に係るインバ−
タ装置は、交流電力を直流電力に変換するコンバ−タ
と、該コンバ−タの出力電圧を平滑する平滑コンデンサ
と、上記交流電力の電源から上記コンバ−タへの電力供
給路を開閉する第１の開閉手段と、該第１の開閉手段と
上記コンバ−タの間の電力供給路を開閉する第２の開閉
手段と、該第２の開閉手段と上記第１の開閉手段の間の
電力供給路に接続され、上記平滑コンデンサをインピ−
ダンスを介して予備充電する予備充電回路と、上記平滑
コンデンサの充電電圧を可変電圧及び可変周波数の交流
電力に変換して出力するインバ−タと、上記第１の開閉
手段が閉成後に、上記平滑コンデンサの充電電圧と上記
予備充電回路の出力電圧の差が第１の所定値以下となる
と信号を出力する第１の比較回路と、該第１の比較回路
が信号を出力してから所定時間経過後に、上記第２の開
閉手段を閉成する開閉制御手段を備えるようにしたもの
である。Inverter according to the present invention
The converter device includes a converter for converting AC power into DC power, a smoothing capacitor for smoothing the output voltage of the converter, and a first opening / closing unit for opening and closing a power supply path from the AC power source to the converter. One opening / closing means, a second opening / closing means for opening / closing a power supply path between the first opening / closing means and the converter, and an electric power between the second opening / closing means and the first opening / closing means. It is connected to the supply path and the smoothing capacitor
A pre-charging circuit for pre-charging via dance, an inverter for converting the charging voltage of the smoothing capacitor into AC power of variable voltage and variable frequency, and outputting the AC power, and after the first opening / closing means is closed, A first comparison circuit that outputs a signal when the difference between the charging voltage of the smoothing capacitor and the output voltage of the preliminary charging circuit becomes a first predetermined value or less, and a predetermined time after the first comparison circuit outputs the signal. An opening / closing control means for closing the second opening / closing means after a lapse of time is provided.
【０００９】また、次の発明に係るエレベ−タの制御装
置は、交流電力を直流電力に変換するコンバ−タと、該
コンバ−タの出力電圧を平滑する平滑コンデンサと、上
記交流電力の電源から上記コンバ−タへの電力供給路を
開閉する第１の開閉手段と、該第１の開閉手段と上記コ
ンバ−タの間の電力供給路を開閉する第２の開閉手段
と、該第２の開閉手段と上記第１の開閉手段の間の電力
供給路に接続され、上記平滑コンデンサをインピ−ダン
スを介して予備充電する予備充電回路と、上記平滑コン
デンサの充電電圧を可変電圧及び可変周波数の交流電力
に変換して出力し、エレベ−タのかごを昇降する交流電
動機を駆動するインバ−タと、上記第１の開閉手段が閉
成後に、上記平滑コンデンサの充電電圧と上記予備充電
回路の出力電圧の差が第１の所定値以下となると信号を
出力する第１の比較回路と、該第１の比較回路が信号を
出力してから所定時間経過後であって、且つ、上記かご
の起動指令が出力されている場合に、上記第２の開閉手
段を閉成する開閉制御手段を備えるようにしたものであ
る。An elevator controller according to the next invention is a converter for converting AC power into DC power, a smoothing capacitor for smoothing the output voltage of the converter, and a power supply for the AC power. A first opening / closing means for opening / closing a power supply path from the converter to the converter, a second opening / closing means for opening / closing a power supply path between the first opening / closing means and the converter, and the second A pre-charging circuit connected to the power supply path between the switching means and the first switching means to pre-charge the smoothing capacitor via impedance, and a variable voltage and a variable frequency for the charging voltage of the smoothing capacitor. Inverter for converting and outputting the AC power to drive the AC motor for moving up and down the elevator car, and after the first opening / closing means is closed, the charging voltage of the smoothing capacitor and the preliminary charging circuit. Output voltage difference A first comparison circuit that outputs a signal when the value is equal to or less than a first predetermined value, and a predetermined time has elapsed after the first comparison circuit outputs a signal, and the car start command is output. In this case, an opening / closing control means for closing the second opening / closing means is provided.
【００１０】また、次の発明に係るエレベ−タの制御装
置は、開閉制御手段が、第１の開閉手段が閉成してから
第１の比較回路が信号を出力するまでの時間を測定し、
該時間から第１の比較回路が信号出力後に平滑コンデン
サがほぼ充電完了するまでの充電時間を演算し、上記第
１の比較回路が信号を出力してから上記充電時間以上経
過した後であって、且つ、上記かごの起動指令が出力さ
れている場合に、第２の開閉手段を閉成するようにした
ものである。In the elevator controller according to the next invention, the opening / closing control means measures the time from the closing of the first opening / closing means to the output of the signal by the first comparison circuit. ,
After the first comparison circuit outputs a signal, a charging time until the smoothing capacitor is almost completely charged is calculated from the time, and after the first comparison circuit outputs a signal, after the charging time or more has elapsed, Further, the second opening / closing means is closed when the car start command is output.
【００１１】更に、次の発明に係るエレベ−タの制御装
置は、第１の所定値より小さい第２の所定値となると信
号を出力する第２の比較回路を備え、開閉制御手段が、
第１の比較回路が信号を出力するまでの時間と上記第２
の比較回路が信号を出力するまでの時間を測定し、上記
２つの時間から上記第２の比較回路が信号を出力後に平
滑コンデンサがほぼ充電完了するまでの充電時間を演算
し、上記第２の比較回路が信号を出力してから上記充電
時間以上経過した後であって、且つ、上記かごの起動指
令が出力されている場合に、第２の開閉手段を閉成する
ようにしたものである。Further, an elevator control apparatus according to the next invention comprises a second comparison circuit which outputs a signal when it becomes a second predetermined value smaller than the first predetermined value, and the opening / closing control means comprises:
The time until the first comparison circuit outputs a signal and the second
Measuring the time until the comparison circuit outputs a signal, and calculating the charging time from the above two times until the smoothing capacitor is almost completely charged after the second comparison circuit outputs the signal, The second opening / closing means is closed after a lapse of the charging time or more after the comparison circuit outputs a signal and when the car start command is output. .
【００１２】[0012]
【作用】この発明におけるインバ−タ装置は、第１の開
閉手段が閉成後に、平滑コンデンサの充電電圧と予備充
電回路の出力電圧の差が第１の所定値以下となると、第
１の比較回路は信号を出力し、第１の比較回路が信号を
出力してから所定時間経過後に、開閉制御手段が第２の
開閉手段を閉成して、コンバ−タに三相交流電源電圧を
印加するようにしたので、平滑コンデンサの充電電圧
が、第１の比較回路が信号を出力した時より更に昇圧し
た状態で三相交流電源電圧をコンバ−タに印加する。In the inverter device according to the present invention, when the difference between the charging voltage of the smoothing capacitor and the output voltage of the pre-charging circuit becomes equal to or less than the first predetermined value after the first opening / closing means is closed, the first comparison is made. The circuit outputs a signal, and after a lapse of a predetermined time after the first comparison circuit outputs the signal, the opening / closing control means closes the second opening / closing means to apply the three-phase AC power supply voltage to the converter. Therefore, the three-phase AC power supply voltage is applied to the converter in a state in which the charging voltage of the smoothing capacitor is further boosted as compared with when the first comparison circuit outputs a signal.
【００１３】また、次の発明におけるエレベ−タの制御
装置は、第１の開閉手段が閉成後に、平滑コンデンサの
充電電圧と予備充電回路の出力電圧の差が第１の所定値
以下となると、第１の比較回路が信号を出力し、第１の
比較回路が信号を出力してから所定時間経過後であっ
て、且つ、エレベ−タのかごの起動指令が出力されてい
る場合に、開閉制御手段が第２の開閉手段を閉成して、
コンバ−タに三相交流電源電圧を印加するようにしたの
で、平滑コンデンサの充電電圧が、第１の比較回路が信
号を出力した時より更に昇圧した状態で、三相交流電源
電圧をコンバ−タに印加する。Also, in the elevator controller according to the next invention, after the first opening / closing means is closed, the difference between the charging voltage of the smoothing capacitor and the output voltage of the preliminary charging circuit becomes equal to or less than the first predetermined value. , When the first comparison circuit outputs a signal, a predetermined time has elapsed after the first comparison circuit outputs a signal, and the elevator car start command is output, The opening / closing control means closes the second opening / closing means,
Since the three-phase AC power supply voltage is applied to the converter, the three-phase AC power supply voltage is converted in a state where the charging voltage of the smoothing capacitor is further boosted as compared with when the first comparison circuit outputs a signal. Applied to the battery.
【００１４】また、次の発明におけるエレベ−タの制御
装置は、開閉制御手段が、第１の開閉手段が閉成してか
ら第１の比較回路が信号を出力するまでの時間を測定
し、この時間から第１の比較回路が信号出力後に平滑コ
ンデンサがほぼ充電完了するまでの充電時間を演算し、
第１の比較回路が信号を出力してから充電時間以上経過
した後であって、且つ、エレベ−タのかごの起動指令が
出力されている場合に、第２の開閉手段を閉成するよう
にしたので、第１の比較回路が信号を出力してから、よ
り的確な充電時間を設定でき、平滑コンデンサがほぼ充
電完了した状態で、三相交流電源電圧をコンバ−タに印
加する。In the elevator controller according to the next invention, the opening / closing control means measures the time from the closing of the first opening / closing means to the output of the signal by the first comparison circuit, From this time, the first comparison circuit calculates the charging time after the signal is output until the smoothing capacitor is almost completely charged,
The second opening / closing means is closed after a lapse of charging time or more after the first comparison circuit outputs a signal and when a command to start the car of the elevator is output. Since the first comparison circuit outputs a signal, a more accurate charging time can be set and the three-phase AC power supply voltage is applied to the converter in a state where the smoothing capacitor is almost completely charged.
【００１５】更に、次の発明におけるエレベ−タの制御
装置は、第１の所定値より小さい第２の所定値となると
信号を出力する第２の比較回路を備え、開閉制御手段
が、第１の比較回路が信号を出力するまでの時間と上記
第２の比較回路が信号を出力するまでの時間を測定し、
上記２つの時間から上記第２の比較回路が信号を出力後
に平滑コンデンサがほぼ充電完了するまでの充電時間を
演算し、上記第２の比較回路が信号を出力してから上記
充電時間以上経過した後であって、且つ、エレベ−タの
かごの起動指令が出力されている場合に、第２の開閉手
段を閉成するようにしたので、上記の２つの比較回路が
信号を出力する時間から、より的確な充電時間を設定で
き、平滑コンデンサがほぼ充電完了した状態で、三相交
流電源電圧をコンバ−タに印加する。Further, an elevator control device according to the next invention comprises a second comparison circuit which outputs a signal when a second predetermined value smaller than the first predetermined value is provided, and the opening / closing control means comprises the first The time until the second comparison circuit outputs a signal and the time until the second comparison circuit outputs a signal are measured,
The charging time until the smoothing capacitor is almost completely charged after the second comparison circuit outputs a signal is calculated from the two times, and the charging time or more has elapsed since the second comparison circuit outputs the signal. Since the second opening / closing means is closed after that, and when the elevator car start command is output, it is possible to change the time from the time when the above two comparison circuits output signals. A more accurate charging time can be set, and the three-phase AC power supply voltage is applied to the converter when the smoothing capacitor is almost completely charged.
【００１６】[0016]
実施例１．以下、この発明の一実施例を図について説明
する。この発明のインバ−タ装置の構成は図８、図９に
示したエレベ−タ装置に用いられたインバ−タ装置の構
成と同様の構成である。Example 1. An embodiment of the present invention will be described below with reference to the drawings. The structure of the inverter device of the present invention is the same as the structure of the inverter device used in the elevator device shown in FIGS.
【００１７】次にこの発明のインバ−タ装置の動作を説
明する。図１は充電時間と共に変化する電圧ＶDCと電圧
ＶD の関係を示す説明図であり、平滑コンデンサ３の充
電電圧に係る電圧ＶDCは回路の時定数により定まる曲線
で上昇することが示されている。図２は遮断器１が投入
されてからエレベ−タのかご１１が起動するまでのマイ
クロコンピュ−タ１９が行う処理を示すフロ−チャ−ト
である。図において、遮断器１が投入されると平滑コン
デンサ３は整流器５とインピ−ダンス６を介して徐々に
充電される。また、電圧ＶD は遮断器１の投入と同時に
立ち上がる。電圧ＶDCと電圧ＶD の差が所定値以上ある
間は比較回路１６の出力は負となり、ステップＳ５にお
いて次のステップに進めない。電圧ＶDCと電圧ＶD の差
が所定値未満になると、比較回路１６の出力は正とな
り、ステップＳ６において時間ｔが測定開始され、ステ
ップＳ７において図２に示す所定時間Ｔ以上経過するま
では、かご１１の起動指令が発生してもコンタクタの接
点１８ａ〜１８ｃの閉成は禁止され、突入電流は阻止さ
れる。所定時間Ｔ以上経過後にステップＳ８においてか
ごの起動指令が発生されると、ステップＳ９において安
全チエックがＯＫならばステップＳ１０においてコンタ
クタの接点１８ａ〜１８ｃの閉成信号を出力し、駆動回
路２２によってコンタクタの接点１８ａ〜１８ｃは閉成
される。このとき平滑コンデンサ３の両端電圧は、交流
電源Ｒ、Ｓ、Ｔの電圧に十分接近しているので、突入電
流が流入することなく、インバ−タ７によって変換され
た可変電圧、可変周波数の三相交流電力が誘導電動機８
に供給されて、巻上機９を駆動し、かご１１は走行す
る。尚、通常比較回路１６が判定する電圧ＶDCと電圧Ｖ
D の差は、正規電圧変動に対する誤動作を避けるため、
正規電圧の変動の幅より小さくできない。Next, the operation of the inverter device of the present invention will be described. FIG. 1 is an explanatory diagram showing the relationship between the voltage V DC and the voltage V D that change with the charging time, and it is shown that the voltage V DC related to the charging voltage of the smoothing capacitor 3 rises in a curve determined by the time constant of the circuit. ing. FIG. 2 is a flowchart showing the processing performed by the microcomputer 19 from the time the circuit breaker 1 is turned on until the car 11 of the elevator is activated. In the figure, when the circuit breaker 1 is turned on, the smoothing capacitor 3 is gradually charged through the rectifier 5 and the impedance 6. Further, the voltage V D rises at the same time when the circuit breaker 1 is turned on. While the difference between the voltage V DC and the voltage V D is equal to or more than a predetermined value, the output of the comparison circuit 16 is negative and the process cannot proceed to the next step in step S5. When the difference between the voltage V DC and the voltage V D becomes less than the predetermined value, the output of the comparison circuit 16 becomes positive, the measurement of the time t is started in step S6, and the predetermined time T shown in FIG. Even if a command to start the car 11 is issued, closing of the contacts 18a to 18c of the contactor is prohibited and the inrush current is blocked. When a car start command is generated in step S8 after a lapse of a predetermined time T or more, if the safety check is OK in step S9, a closing signal of the contactors 18a to 18c of the contactor is output in step S10, and the drive circuit 22 causes the contactor to close. The contacts 18a to 18c are closed. At this time, since the voltage across the smoothing capacitor 3 is sufficiently close to the voltages of the AC power supplies R, S, T, the inrush current does not flow in the variable voltage converted by the inverter 7 and the variable frequency. Phase AC power is induction motor 8
Is supplied to drive the hoisting machine 9, and the car 11 runs. It should be noted that the voltage V DC and the voltage V DC that the normal comparison circuit 16 determines
The difference of D is to avoid malfunction due to normal voltage fluctuation.
It cannot be smaller than the fluctuation range of the regular voltage.
【００１８】上述のように、この実施例では、従来は電
圧ＶDCと電圧ＶD を比較し、この差が所定値以下になっ
てかご１１の起動指令が発生すると即座に起動できるよ
うに制御していたので、比較回路１６の動作直後に起動
指令が発生した場合、交流電源Ｒ、Ｓ、Ｔと平滑コンデ
ンサ３の電圧差による突入電流が流れ、経年的にコンタ
クタの接点１８ａ〜１８ｃやコンバ−タ２のダイオ−ド
を劣化させるという問題があったが、この点を上述の簡
単な構成で解決することができる。尚、この実施例では
インバ−タ装置１００をエレベ−タの制御装置に用いた
例について説明したが、交流電源Ｒ、Ｓ、Ｔが変動する
他の用途に適用しても同様な効果を奏するものである。As described above, in this embodiment, conventionally, the voltage V DC is compared with the voltage V D, and control is performed so that the car 11 can be immediately started when the difference becomes less than or equal to a predetermined value and a command for starting the car 11 is issued. Therefore, if a start command is generated immediately after the operation of the comparison circuit 16, an inrush current flows due to the voltage difference between the AC power supplies R, S, T and the smoothing capacitor 3, and the contacts 18a to 18c of the contactor and the converter are aged over time. There is a problem that the diode of the data 2 is deteriorated, but this point can be solved by the above-mentioned simple structure. In this embodiment, an example in which the inverter device 100 is used as a control device for an elevator has been described, but the same effect can be obtained even if the inverter device 100 is applied to other uses in which the AC power supplies R, S, T fluctuate. It is a thing.
【００１９】実施例２．次に、この発明のインバ−タ装
置の他の態様の実施例について説明する。この発明のイ
ンバ−タ装置の構成は図８、図９に示したエレベ−タ装
置に用いられたインバ−タ装置の構成と同様の構成であ
る。図３はこの発明のインバ−タ装置の一実施例の充電
時間と共に変化する電圧ＶDCと電圧ＶD の関係を示す説
明図であり、図４はは遮断器１が投入されてからエレベ
−タのかご１１が起動するまでのマイクロコンピュ−タ
１９が行う処理を示すフロ−チャ−トである。Example 2. Next, an embodiment of another aspect of the inverter device of the present invention will be described. The structure of the inverter device of the present invention is the same as the structure of the inverter device used in the elevator device shown in FIGS. FIG. 3 is an explanatory view showing the relationship between the voltage V DC and the voltage V D which changes with the charging time in one embodiment of the inverter device of the present invention, and FIG. 4 is an elevator after the breaker 1 is turned on. 6 is a flowchart showing the processing performed by the microcomputer 19 until the car basket 11 is activated.
【００２０】次にこの発明のインバ−タ装置の動作を図
３、図４に基づいて説明する。図において遮断器１が投
入されるとステップＳ１１において図３に示す時間ｔ1
の測定が開始され、ステップＳ１２、Ｓ１３において電
圧ＶDCと電圧ＶD の差が所定値未満になって比較回路１
６の出力が正となるまで時間ｔ1 は計測される。 次
に、ステップＳ１４において時間ｔ1 を基に、平滑コン
デンサ３がほぼ充電完了するまでの、図３に示す充電完
了時間Ｔが演算される。ステップＳ１５、Ｓ１６におい
て充電完了時間Ｔ以上経過するまではかご１１の起動は
禁止され、突入電流は阻止される。ステップＳ１７にお
いて起動指令が発生されると、ステップＳ１８において
安全チエックＯＫならば、Ｓ１９においてコンタクタの
接点１８ａ〜１８ｃの閉成信号を出力し、駆動回路２２
によってコンタクタの接点１８ａ〜１８ｃは閉成され
る。このとき平滑コンデンサ３の両端電圧は、交流電源
Ｒ、Ｓ、Ｔの電圧に十分接近しているので、突入電流が
流入することなく、インバ−タ７によって変換された可
変電圧、可変周波数の三相交流電力が誘導電動機８に供
給され、巻上機９を駆動し、かご１１は走行する。Next, the operation of the inverter device of the present invention will be described with reference to FIGS. In the figure, when the circuit breaker 1 is turned on, the time t 1 shown in FIG.
Is started, and the difference between the voltage V DC and the voltage V D becomes less than a predetermined value in steps S12 and S13, and the comparison circuit 1
The time t 1 is measured until the output of 6 becomes positive. Next, in step S14, the charging completion time T shown in FIG. 3 until the smoothing capacitor 3 is almost completely charged is calculated based on the time t 1 . The activation of the car 11 is prohibited and the inrush current is blocked until the charging completion time T or more elapses in steps S15 and S16. When the start command is generated in step S17, if the safety check is OK in step S18, the closing signal of the contactors 18a to 18c of the contactor is output in step S19, and the drive circuit 22
The contacts 18a to 18c of the contactor are closed by this. At this time, since the voltage across the smoothing capacitor 3 is sufficiently close to the voltages of the AC power supplies R, S, T, the inrush current does not flow in and the variable voltage converted by the inverter 7 and the variable frequency. Phase alternating current power is supplied to the induction motor 8, drives the hoisting machine 9, and causes the car 11 to run.
【００２１】この実施例ではインバ−タ装置が比較回路
１６の出力が正となるまでの時間ｔ1 を計測し、この時
間ｔ1 を基に、平滑コンデンサ３がほぼ充電完了するま
での充電完了時間Ｔを演算してコンタクタの接点１８ａ
〜１８ｃを開閉制御し、的確な充電時間でかご１１を起
動するので、エレベ−タの制御装置は遮断機１の投入か
ら起動までの時間を短縮できる。In this embodiment, the inverter device measures the time t 1 until the output of the comparison circuit 16 becomes positive, and based on this time t 1 , the charging is completed until the smoothing capacitor 3 is almost completely charged. The contact point 18a of the contactor by calculating the time T
Since the open / close control of 18c is performed and the car 11 is started in an appropriate charging time, the controller of the elevator can shorten the time from the closing of the circuit breaker 1 to the start.
【００２２】実施例３．次に、この発明のインバ−タ装
置の他の態様の実施例について説明する。図５はこの発
明のインバ−タ装置の構成を示す構成図であり、同一符
号は同一又は相当部分を示すので説明を省略する。図６
は充電時間と共に変化する電圧ＶDCと電圧ＶD の関係を
示す説明図である。図において、１６ａは電圧ＶDCと電
圧ＶD の差が図６に示す第１の所定値以下となると動作
する比較回路、１６ｂは上記電圧差が第１の所定値より
小さく、図６に示す第２の所定値以下になると動作する
第２の比較回路、１７Ａは遮断器１が投入されてから第
１の比較回路が動作するまでの時間ｔ2 と第２の比較回
路が動作するまでの時間ｔ3 を計測し、平滑コンデンサ
３がほぼ充電完了するまでの、図６に示す充電完了時間
Ｔを演算してコンタクタの接点１８ａ〜１８ｃの開閉を
制御する開閉制御手段である。Example 3. Next, an embodiment of another aspect of the inverter device of the present invention will be described. FIG. 5 is a configuration diagram showing the configuration of the inverter device of the present invention, and the same reference numerals indicate the same or corresponding parts, and therefore the description thereof will be omitted. Figure 6
FIG. 4 is an explanatory diagram showing a relationship between a voltage V DC and a voltage V D which changes with charging time. In the figure, 16a is a comparator circuit which operates when the difference between the voltage V DC and the voltage V D becomes less than or equal to the first predetermined value shown in FIG. 6, and 16b shows the voltage difference which is smaller than the first predetermined value and is shown in FIG. A second comparison circuit 17A that operates when the value becomes equal to or less than a second predetermined value is a time t 2 from when the circuit breaker 1 is turned on to when the first comparison circuit operates and until when the second comparison circuit operates. time t 3 is measured, to the smoothing capacitor 3 is substantially fully charged, a switching control unit that calculates the charge completion time T for controlling the opening and closing of the contacts 18a~18c of the contactor shown in FIG.
【００２３】次にこの発明のインバ−タ装置の動作を図
７に基づいて説明する。図７はは遮断器１が投入されて
からエレベ−タのかご１１が起動するまでのマイクロコ
ンピュ−タ１９が行う処理を示すフロ−チャ−トであ
る。図において遮断器１が投入されるとステップＳ２
０、Ｓ２１、Ｓ２２において図６に示す第１の比較回路
１６ａが動作するまでの時間ｔ2 が測定され、さらにス
テップＳ２３、Ｓ２４、Ｓ２５において第２の比較回路
１６ｂが動作するまでの時間ｔ3 が計測される。次に、
ステップＳ２６において上記時間ｔ2 、ｔ3 を基に平滑
コンデンサ３の充電がほぼ完了するまでの充電完了時間
Ｔが演算され、ステップＳ２７、Ｓ２８において充電完
了時間Ｔ以上経過するまでかご１１の起動は禁止され、
突入電流は阻止される。ステップＳ２９において起動指
令が発生されると、ステップＳ３０において安全チエッ
クＯＫならば、Ｓ３１において開閉制御手段１７Ａはコ
ンタクタの接点１８ａ〜１８ｃの閉成信号を出力し、駆
動回路２２によってコンタクタの接点１８ａ〜１８ｃは
閉成される。このとき平滑コンデンサ３の両端電圧は、
交流電源Ｒ、Ｓ、Ｔの電圧に十分接近しているので、突
入電流が流入することなく、インバ−タ７によって変換
された可変電圧、可変周波数の三相交流電力が誘導電動
機８に供給されて、巻上機９を駆動し、かご１１は走行
する。Next, the operation of the inverter device of the present invention will be described with reference to FIG. FIG. 7 is a flowchart showing the processing performed by the microcomputer 19 from the time the circuit breaker 1 is turned on until the car 11 of the elevator is activated. In the figure, when the circuit breaker 1 is turned on, step S2
The time t 2 until the first comparison circuit 16a shown in FIG. 6 operates at 0, S21, S22, and the time t 3 until the second comparison circuit 16b operates at steps S23, S24, S25. Is measured. next,
In step S26 the charging completion time T until the charging of the smoothing capacitor 3 based on the time t 2, t 3 is substantially completed is calculated, starting the car 11 until the older than charging completion time T in step S27, S28 Banned,
Inrush current is blocked. When the start command is generated in step S29, if the safety check is OK in step S30, the opening / closing control means 17A outputs the closing signal of the contactors 18a-18c of the contactor in step S31, and the drive circuit 22 causes the contactor contacts 18a- 18c is closed. At this time, the voltage across the smoothing capacitor 3 is
Since the voltages are close enough to the voltages of the AC power supplies R, S, T, the three-phase AC power of the variable voltage and the variable frequency converted by the inverter 7 is supplied to the induction motor 8 without the inrush current flowing therein. Then, the hoisting machine 9 is driven and the car 11 runs.
【００２４】この実施例ではインバ−タ装置が第１の比
較回路１６ａ及び第２の比較回路１６ｂの出力が正とな
るまでの時間ｔ2 、ｔ3 を計測し、この時間ｔ2 、ｔ3
をもとに、平滑コンデンサ３がほぼ充電完了するまでの
充電完了時間Ｔを演算してコンタクタの接点１８ａ〜１
８ｃを開閉制御し、より的確な充電時間でかご１１を起
動するので、エレベ−タの制御装置は遮断機１の投入か
ら起動までの時間を短縮できる。[0024] In the example inverter - measures the time t 2, t 3 of the motor apparatus to the output of the first comparator circuit 16a and the second comparator circuit 16b is positive, the time t 2, t 3
Based on the above, the charging completion time T until the smoothing capacitor 3 is almost completely charged is calculated and contact points 18a to 1a of the contactors are calculated.
Since the opening / closing control of 8c is performed and the car 11 is started in a more accurate charging time, the elevator control device can shorten the time from the closing of the circuit breaker 1 to the start thereof.
【００２５】[0025]
【発明の効果】以上のように、この発明によれば、イン
バ−タ装置を、第１の開閉手段が閉成後に、平滑コンデ
ンサの充電電圧と予備充電回路の出力電圧の差が第１の
所定値以下となると、第１の比較回路は信号を出力し、
第１の比較回路が信号を出力してから所定時間経過後
に、開閉制御手段が第２の開閉手段を閉成して、コンバ
−タに三相交流電源電圧を印加するように構成すると、
平滑コンデンサの充電電圧が、第１の比較回路が信号を
出力した時より更に昇圧した状態で三相交流電源電圧が
コンバ−タに印加されるので、高い信頼性で平滑コンデ
ンサへの突入電流は抑制され、接点及びダイオ−ド等の
劣化を抑制したインバ−タ装置を簡単な構成で実現で
き、しかも安価に提供できる効果がある。As described above, according to the present invention, in the inverter device, after the first opening / closing means is closed, the difference between the charging voltage of the smoothing capacitor and the output voltage of the preliminary charging circuit is the first. When the value becomes less than or equal to a predetermined value, the first comparison circuit outputs a signal,
When the opening / closing control means closes the second opening / closing means to apply the three-phase AC power supply voltage to the converter after a predetermined time has elapsed after the first comparison circuit outputs the signal,
Since the three-phase AC power supply voltage is applied to the converter in a state where the charging voltage of the smoothing capacitor is boosted more than when the first comparison circuit outputs a signal, the inrush current to the smoothing capacitor is highly reliable. It is possible to realize an inverter device which is suppressed and suppresses deterioration of contacts and diodes with a simple structure, and at the same time, it is possible to provide it at low cost.
【００２６】また、次の発明によれば、エレベ−タの制
御装置を、第１の開閉手段が閉成後に、平滑コンデンサ
の充電電圧と予備充電回路の出力電圧の差が第１の所定
値以下となると、第１の比較回路が信号を出力し、第１
の比較回路が信号を出力してから所定時間経過後であっ
て、且つ、エレベ−タのかごの起動指令が出力されてい
る場合に、開閉制御手段が第２の開閉手段を閉成して、
コンバ−タに三相交流電源電圧を印加するように構成す
ると、平滑コンデンサの充電電圧が、第１の比較回路が
信号を出力した時より更に昇圧した状態で三相交流電源
電圧がコンバ−タに印加されるので、エレベ−タのかご
が起動しても高い信頼性で平滑コンデンサへの突入電流
は抑制され、接点及びダイオ−ド等の劣化を抑制し、所
定時間経過後に確実にかごを起動できるエレベ−タの制
御装置を簡単な構成で実現でき、しかも安価に提供でき
る効果がある。According to the next invention, in the controller for the elevator, after the first opening / closing means is closed, the difference between the charging voltage of the smoothing capacitor and the output voltage of the preliminary charging circuit is the first predetermined value. When the following occurs, the first comparison circuit outputs a signal,
After a lapse of a predetermined time from the comparison circuit outputting the signal, and when the elevator car start command is output, the opening / closing control means closes the second opening / closing means. ,
When the three-phase AC power supply voltage is applied to the converter, the three-phase AC power supply voltage is increased in a state where the charging voltage of the smoothing capacitor is further boosted than when the first comparison circuit outputs a signal. Therefore, even if the elevator car is started, the inrush current to the smoothing capacitor is suppressed with high reliability, the deterioration of contacts and diodes is suppressed, and the car can be reliably removed after a predetermined time. There is an effect that an elevator control device that can be activated can be realized with a simple structure and can be provided at low cost.
【００２７】また、次の発明によれば、エレベ−タの制
御装置を、開閉制御手段が、第１の開閉手段が閉成して
から第１の比較回路が信号を出力するまでの時間を測定
し、この時間から第１の比較回路が信号出力後に平滑コ
ンデンサがほぼ充電完了するまでの充電時間を演算し、
第１の比較回路が信号を出力してから充電時間以上経過
した後であって、且つ、エレベ−タのかごの起動指令が
出力されている場合に、第２の開閉手段を閉成するよう
に構成すると、第１の比較回路が信号を出力してから、
より的確な充電時間を設定でき、平滑コンデンサがほぼ
充電完了した状態で、三相交流電源電圧がコンバ−タに
印加されるので、エレベ−タのかごが起動しても高い信
頼性で平滑コンデンサへの突入電流は抑制され、接点及
びダイオ−ド等の劣化を抑制し、第１の開閉手段が閉成
してから起動までの時間を短縮できるエレベ−タの制御
装置を簡単な構成で実現でき、しかも安価に提供できる
効果がある。According to another aspect of the invention, in the elevator control device, the opening / closing control means sets the time from the closing of the first opening / closing means to the output of the signal by the first comparison circuit. After measuring, the charging time from this time until the smoothing capacitor is almost completely charged after the signal output from the first comparison circuit is calculated,
The second opening / closing means is closed after a lapse of charging time or more after the first comparison circuit outputs a signal and when a command to start the car of the elevator is output. With the above configuration, after the first comparison circuit outputs the signal,
A more accurate charging time can be set, and the three-phase AC power supply voltage is applied to the converter when the smoothing capacitor is almost fully charged, so the smoothing capacitor is highly reliable even when the elevator car starts. The inrush current to the elevator is suppressed, the deterioration of the contacts and diodes is suppressed, and the elevator control device that can shorten the time from the closing of the first opening / closing means to the startup is realized with a simple configuration. There is an effect that it can be provided at low cost.
【００２８】更に、次の発明によれば、エレベ−タの制
御装置を、第１の所定値より小さい第２の所定値となる
と信号を出力する第２の比較回路を備え、開閉制御手段
が、第１の比較回路が信号を出力するまでの時間と上記
第２の比較回路が信号を出力するまでの時間を測定し、
上記２つの時間から上記第２の比較回路が信号を出力後
に平滑コンデンサがほぼ充電完了するまでの充電時間を
演算し、上記第２の比較回路が信号を出力してから充電
時間以上経過した後であって、且つ、エレベ−タのかご
の起動指令が出力されている場合に、第２の開閉手段を
閉成するように構成すると、上記の２つの比較回路が信
号を出力する時間から、より的確な充電時間を設定で
き、平滑コンデンサがほぼ充電完了した状態で、三相交
流電源電圧がコンバ−タに印加されるので、エレベ−タ
のかごが起動しても高い信頼性で平滑コンデンサへの突
入電流は抑制され、接点及びダイオ−ド等の劣化を抑制
し、第１の開閉手段が閉成してから起動までの時間を短
縮できるエレベ−タの制御装置を簡単な構成で実現で
き、しかも安価に提供できる効果がある。Further, according to the next invention, the elevator control device is provided with a second comparison circuit for outputting a signal when it becomes a second predetermined value smaller than the first predetermined value, and the opening / closing control means is provided. , Measuring the time until the first comparison circuit outputs a signal and the time until the second comparison circuit outputs a signal,
After the second comparison circuit outputs a signal from the above two times, the charging time until the smoothing capacitor is almost completely charged is calculated, and after the second comparison circuit outputs the signal, the charging time or more elapses. In addition, when the start command for the elevator car is output, if the second opening / closing means is configured to be closed, from the time when the above two comparison circuits output signals, A more accurate charging time can be set, and the three-phase AC power supply voltage is applied to the converter when the smoothing capacitor is almost fully charged, so the smoothing capacitor is highly reliable even when the elevator car starts. The inrush current to the elevator is suppressed, the deterioration of the contacts and diodes is suppressed, and the elevator control device that can shorten the time from the closing of the first opening / closing means to the startup is realized with a simple configuration. Can be provided at low cost There is a kill effect.
【図１】この発明の一実施例のエレベ−タの制御装置に
用いられたインバ−タ装置の平滑コンデンサの充電時間
と充電電圧の関係を示す説明図である。FIG. 1 is an explanatory diagram showing a relationship between a charging time and a charging voltage of a smoothing capacitor of an inverter device used in an elevator controller according to an embodiment of the present invention.
【図２】この発明の一実施例のエレベ−タの制御装置に
用いられたインバ−タ装置の動作を示すフロ−チャ−ト
である。FIG. 2 is a flowchart showing the operation of the inverter device used in the elevator controller according to the embodiment of the present invention.
【図３】この発明の実施例２のエレベ−タの制御装置に
用いられたインバ−タ装置の平滑コンデンサの充電時間
と充電電圧の関係を示す説明図である。FIG. 3 is an explanatory diagram showing the relationship between the charging time and the charging voltage of the smoothing capacitor of the inverter device used in the elevator control device according to the second embodiment of the present invention.
【図４】この発明の実施例２のエレベ−タの制御装置に
用いられたインバ−タ装置の動作を示すフロ−チャ−ト
である。FIG. 4 is a flowchart showing the operation of the inverter device used in the elevator control device according to the second embodiment of the present invention.
【図５】この発明の実施例３のエレベ−タの制御装置に
用いられたインバ−タ装置の構成を示す構成図である。FIG. 5 is a configuration diagram showing a configuration of an inverter device used in an elevator control device according to a third embodiment of the present invention.
【図６】この発明の実施例３のエレベ−タの制御装置に
用いられたインバ−タ装置の平滑コンデンサの充電時間
と充電電圧の関係を示す説明図である。FIG. 6 is an explanatory diagram showing the relationship between the charging time and the charging voltage of the smoothing capacitor of the inverter device used in the elevator control device according to the third embodiment of the present invention.
【図７】この発明の実施例３のエレベ−タの制御装置に
用いられたインバ−タ装置の動作を示すフロ−チャ−ト
である。FIG. 7 is a flowchart showing the operation of the inverter device used in the elevator control device according to the third embodiment of the present invention.
【図８】従来及びこの発明の一実施例のエレベ−タの制
御装置に用いられたインバ−タ装置の構成を示す構成図
である。FIG. 8 is a configuration diagram showing a configuration of an inverter device used in a conventional controller for an elevator according to an embodiment of the present invention.
【図９】従来及びこの発明の一実施例のエレベ−タの制
御装置に用いられたインバ−タ装置の開閉制御手段の構
成を示す構成図である。FIG. 9 is a configuration diagram showing the configuration of the opening / closing control means of the inverter device used in the control device for an elevator according to the related art and one embodiment of the present invention.
【図１０】従来のエレベ−タの制御装置に用いられたイ
ンバ−タ装置の動作を示すフロ−チャ−トである。FIG. 10 is a flowchart showing the operation of an inverter device used in a conventional elevator control device.
１ 遮断器 ２ コンバ−タ ３ 平滑コンデンサ ４ 充電回路 ５ 整流回路 ６ インピ−ダンス ７ インバ−タ ８ 誘導電動機 １１ かご １６、１６ａ、１６ｂ 比較回路 １７、１７Ａ 開閉制御手段 １８ａ〜１８ｃ コンタクタの接点 DESCRIPTION OF SYMBOLS 1 Breaker 2 Converter 3 Smoothing capacitor 4 Charging circuit 5 Rectifier circuit 6 Impedance 7 Inverter 8 Induction motor 11 Car 16, 16a, 16b Comparison circuit 17, 17A Switching control means 18a-18c Contactor contact
Claims (4)
タと、該コンバ−タの出力電圧を平滑する平滑コンデン
サと、上記交流電力の電源から上記コンバ−タへの電力
供給路を開閉する第１の開閉手段と、該第１の開閉手段
と上記コンバ−タの間の電力供給路を開閉する第２の開
閉手段と、該第２の開閉手段と上記第１の開閉手段の間
の電力供給路に接続され、上記平滑コンデンサをインピ
−ダンスを介して予備充電する予備充電回路と、上記平
滑コンデンサの充電電圧を可変電圧及び可変周波数の交
流電力に変換して出力するインバ−タと、上記第１の開
閉手段が閉成後に、上記平滑コンデンサの充電電圧と上
記予備充電回路の出力電圧の差が第１の所定値以下とな
ると信号を出力する第１の比較回路と、該第１の比較回
路が信号を出力してから所定時間経過後に、上記第２の
開閉手段を閉成する開閉制御手段を備えたことを特徴と
するインバ−タ装置。1. A converter for converting AC power into DC power.
A smoothing capacitor for smoothing the output voltage of the converter, a first opening / closing means for opening / closing a power supply path from the AC power source to the converter, the first opening / closing means, and the above A second opening / closing means for opening / closing a power supply path between the converters, and a power supply path between the second opening / closing means and the first opening / closing means are connected to each other, and the smoothing capacitor has an impedance. A pre-charging circuit for pre-charging via the inverter, an inverter for converting the charging voltage of the smoothing capacitor into AC power of variable voltage and variable frequency, and outputting the AC power, and the smoothing capacitor after the first opening / closing means is closed. A first comparing circuit that outputs a signal when the difference between the charging voltage of the first charging circuit and the output voltage of the pre-charging circuit is less than or equal to a first predetermined value; , Closing the second opening / closing means Motor unit - inverter, characterized in that it comprises a switching control unit.
タと、該コンバ−タの出力電圧を平滑する平滑コンデン
サと、上記交流電力の電源から上記コンバ−タへの電力
供給路を開閉する第１の開閉手段と、該第１の開閉手段
と上記コンバ−タの間の電力供給路を開閉する第２の開
閉手段と、該第２の開閉手段と上記第１の開閉手段の間
の電力供給路に接続され、上記平滑コンデンサをインピ
−ダンスを介して予備充電する予備充電回路と、上記平
滑コンデンサの充電電圧を可変電圧及び可変周波数の交
流電力に変換して出力し、エレベ−タのかごを昇降する
交流電動機を駆動するインバ−タと、上記第１の開閉手
段が閉成後に、上記平滑コンデンサの充電電圧と上記予
備充電回路の出力電圧の差が第１の所定値以下となると
信号を出力する第１の比較回路と、該第１の比較回路が
信号を出力してから所定時間経過後であって、且つ、上
記かごの起動指令が出力されている場合に、上記第２の
開閉手段を閉成する開閉制御手段を備えたことを特徴と
するエレベ−タの制御装置。2. A converter for converting AC power into DC power.
A smoothing capacitor for smoothing the output voltage of the converter, a first opening / closing means for opening / closing a power supply path from the AC power source to the converter, the first opening / closing means, and the above A second opening / closing means for opening / closing a power supply path between the converters, and a power supply path between the second opening / closing means and the first opening / closing means are connected to each other, and the smoothing capacitor has an impedance. A pre-charging circuit for pre-charging via the smoothing capacitor, converting the charging voltage of the smoothing capacitor into AC power of variable voltage and variable frequency, and outputting the AC power; and an inverter for driving an AC motor that moves up and down the elevator car. A first comparison circuit that outputs a signal when the difference between the charging voltage of the smoothing capacitor and the output voltage of the preliminary charging circuit becomes equal to or less than a first predetermined value after the first opening / closing means is closed; Is the comparison circuit outputting a signal? An elevator control device comprising an opening / closing control means for closing the second opening / closing means after a predetermined time has elapsed and when the car start command is output. .
してから第１の比較回路が信号を出力するまでの時間を
測定し、該時間から第１の比較回路が信号出力後に平滑
コンデンサがほぼ充電完了するまでの充電時間を演算
し、上記第１の比較回路が信号を出力してから上記充電
時間以上経過した後であって、且つ、上記かごの起動指
令が出力されている場合に、第２の開閉手段を閉成する
ものであることを特徴とする請求項第２項に記載のエレ
ベ−タの制御装置。3. The opening / closing control means measures the time from the closing of the first opening / closing means to the output of the signal by the first comparison circuit, and after the time, the first comparison circuit outputs the signal. The smoothing capacitor calculates a charging time until the charging is almost completed, and after the charging time has elapsed since the first comparison circuit outputs a signal, and the car start command is output. The elevator control device according to claim 2, wherein the second opening / closing means is closed when the elevator is open.
なると信号を出力する第２の比較回路を備え、開閉制御
手段は、第１の比較回路が信号を出力するまでの時間と
上記第２の比較回路が信号を出力するまでの時間を測定
し、上記２つの時間から上記第２の比較回路が信号を出
力後に平滑コンデンサがほぼ充電完了するまでの充電時
間を演算し、上記第２の比較回路が信号を出力してから
上記充電時間以上経過した後であって、且つ、上記かご
の起動指令が出力されている場合に、第２の開閉手段を
閉成するものであることを特徴とする請求項第２項に記
載のエレベ−タの制御装置。4. A second comparison circuit that outputs a signal when the second predetermined value is smaller than the first predetermined value, and the opening / closing control means sets a time until the first comparison circuit outputs the signal. The time until the second comparison circuit outputs a signal is measured, and the charging time until the smoothing capacitor is almost completely charged after the second comparison circuit outputs the signal is calculated from the two times, and The second opening / closing means is closed after a lapse of the charging time or more after the second comparison circuit outputs a signal and when the car start command is output. The elevator control device according to claim 2, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10137494A JP3334329B2 (en) | 1994-05-16 | 1994-05-16 | Inverter device and elevator control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10137494A JP3334329B2 (en) | 1994-05-16 | 1994-05-16 | Inverter device and elevator control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07312876A true JPH07312876A (en) | 1995-11-28 |
| JP3334329B2 JP3334329B2 (en) | 2002-10-15 |
Family
ID=14299042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10137494A Expired - Fee Related JP3334329B2 (en) | 1994-05-16 | 1994-05-16 | Inverter device and elevator control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3334329B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002045250A1 (en) * | 2000-11-30 | 2002-06-06 | Mitsubishi Denki Kabushiki Kaisha | Power conversion device |
| US6654262B2 (en) | 2000-11-30 | 2003-11-25 | Mitsubishi Denki Kabushiki Kaisha | Inverter with pre-charging capacitor to reduce inrush current |
| WO2006045231A1 (en) * | 2004-10-26 | 2006-05-04 | Weiguang Li | A chargeable inverter power supply |
-
1994
- 1994-05-16 JP JP10137494A patent/JP3334329B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002045250A1 (en) * | 2000-11-30 | 2002-06-06 | Mitsubishi Denki Kabushiki Kaisha | Power conversion device |
| US6654262B2 (en) | 2000-11-30 | 2003-11-25 | Mitsubishi Denki Kabushiki Kaisha | Inverter with pre-charging capacitor to reduce inrush current |
| WO2006045231A1 (en) * | 2004-10-26 | 2006-05-04 | Weiguang Li | A chargeable inverter power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3334329B2 (en) | 2002-10-15 |
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