JPS5811996U - Motor control circuit - Google Patents

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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の直流電動機速度制御回路図、第２図は他
励直流電動機の速度、トルク特性図、第３図は他励直流
電動機の電流、トルク特性図、第４図は主回路電圧、電
流間の位相差を示す説明図、第５図は本考案を主回路に
応用した場合のシーケンス図、第６図は本考案を制御回
路に応用した場合のブロック図、第７図は第６図の回路
の動作を示す説明図、第８図は第６図の回路図、第９図
は　　゛第８図の回路の動作を示す説明図、第１０図は
本考案を実施した場合の主回路電圧、電流の特性図。 １６・・・サイリスク、１７・・・自己消己消弧性スイ
、ツチング素子、３・・・ゲート制御回路、６・・・Ｏ
Ｎ。 ＯＦＦ制御回路、ＶＣＩ＋　”Ｃ２・・・制御入力、２
・・・電流制御回路、３′・・・ゲート制御回路、６・
・・ＯＮ。 ＯＦＦ制御回路、７・・・入力判別回路、８・・・移相
回路、９・・・論理回路。Figure 1 is a conventional DC motor speed control circuit diagram, Figure 2 is a speed and torque characteristic diagram of a separately excited DC motor, Figure 3 is a current and torque characteristic diagram of a separately excited DC motor, and Figure 4 is the main circuit voltage. , an explanatory diagram showing the phase difference between currents, Fig. 5 is a sequence diagram when the present invention is applied to a main circuit, Fig. 6 is a block diagram when the present invention is applied to a control circuit, and Fig. 7 is a sequence diagram when the present invention is applied to a control circuit. 6 is an explanatory diagram showing the operation of the circuit of FIG. 6, FIG. 8 is a circuit diagram of FIG. 6, FIG. 9 is an explanatory diagram showing the operation of the circuit of FIG. Characteristic diagram of main circuit voltage and current. 16... Cyrisk, 17... Self-extinguishing arc-extinguishing switch, switching element, 3... Gate control circuit, 6... O
N. OFF control circuit, VCI+ "C2... control input, 2
...Current control circuit, 3'...Gate control circuit, 6.
...ON. OFF control circuit, 7... Input discrimination circuit, 8... Phase shift circuit, 9... Logic circuit.

Claims (1)

【実用新案登録請求の範囲】 サイリスタ及びトランジスタ、ＧＴＯ等の自己消弧素子
から構成される装置 を行う電動機の速度制御回路において、その電流制御信
号（ＡＰＰＳ入力信号）を検出し、この値と電動機の特
性によって定まる一定の電圧を比較する手段と、前者が
後者より大きい場合、すなわち負荷時は損失の少ない位
相制御で電動機の速度制御を実施、逆に後者が前者より
大きい場合、すなわち軽負荷時は力率の低下を防止する
ためＯＮ−ＯＦＦ制御にて速度制御を実施する手段とよ
りなることを特徴とする電動機制御回路。[Claims for Utility Model Registration] In the speed control circuit of a motor that operates a device consisting of self-extinguishing elements such as thyristors, transistors, and GTOs, the current control signal (APPS input signal) is detected, and this value and the motor When the former is larger than the latter, that is, when the load is on, the speed of the motor is controlled using phase control with less loss, and conversely, when the latter is larger than the former, that is, when the load is light. 1. An electric motor control circuit comprising means for controlling speed by ON-OFF control to prevent a decrease in power factor.