JPS60160091U

JPS60160091U - Elevator speed control device

Info

Publication number: JPS60160091U
Application number: JP4814984U
Authority: JP
Inventors: 雅之吉田
Original assignee: 三菱電機株式会社
Priority date: 1984-04-02
Filing date: 1984-04-02
Publication date: 1985-10-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来のエレベータの速度制御装置の回路図、第
２図は本発明の一実施例の回路図を示す。１・・・・・・ｔＬ　２・・・・・・ノーヒユーズブレ
ーカ（ＮＦ）、３・・・・・・電源変換回路、４・・・
・・・三相誘導電動機、訃・・・・・ベースドライブ回
路、９・・・・・・制御回路、１０・・・・・・放電ス
イッチ、３３・・・・・・平滑コンデンサ、３４・・・
・・・回生電力消費回路、３４ｂ・・・・・・回生トラ
ンジスタ。なお、各図中同一符号は同−又は相当部分を
示すものとする。FIG. 1 shows a circuit diagram of a conventional elevator speed control device, and FIG. 2 shows a circuit diagram of an embodiment of the present invention. 1...tL 2...No fuse breaker (NF), 3...Power conversion circuit, 4...
... Three-phase induction motor, ... Base drive circuit, 9 ... Control circuit, 10 ... Discharge switch, 33 ... Smoothing capacitor, 34 ...・・・
...Regenerative power consumption circuit, 34b...Regenerative transistor. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) A regenerative power consumption circuit that is provided in the power conversion circuit and consumes regenerative power generated during regenerative operation of the induction motor;
The power supply circuit includes a base drive circuit that controls the operation of the inverter and the regenerative power consumption circuit of the power conversion circuit, and a control circuit that controls the operation of the elevator by outputting a control signal to the source drive circuit. In an elevator speed control device that controls the speed of an elevator based on simultaneous adjustment of voltage and frequency of the output of 1. An elevator speed control device comprising a discharge switch that sends a command to a control circuit.

(2) The above-mentioned discharge switch is configured to be turned on in advance when a no-fuse breaker provided at the input end of the power conversion circuit is cut off. Elevator speed control device.