JPS58139899U

JPS58139899U - Constant voltage constant frequency control device

Info

Publication number: JPS58139899U
Application number: JP3847482U
Authority: JP
Inventors: 博之増田
Original assignee: 三菱電機株式会社
Priority date: 1982-03-16
Filing date: 1982-03-16
Publication date: 1983-09-20

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 the drawing]

第１図は従来のＣＶＣＦインバータの主回路構成図、第
２図は従来のＰＷＭ型ＣＶＣＦ制御回路のブロック構成
図、第３図は従来のＰＷＭ型ＣＶＣＦ制御回路による各
部波形図、第４図は出力電流方向による出力電圧波形の
変化を示す対応図、第５図は本考案のＣＶＣＦインバー
タの主回路構成図、第６図は本考案のＰＷＭ型ＣＶＣＦ
制御回路のブロック図、第７図は出力電力検出回路の動
作説明図、第８図は本考案のＰＷＭ型ＣＶＣＦ制御回路
による各部の波形図である。１・・・・・・インバータ、１１・・・・・・１４・・
・・・・トランジスタ、１５・・・・・・１８・・・・
・・ダイオード、２・・・・・・直流電源、３・・・・
・・高周波吸収用フィルタ、３１・・・・・・リアクト
ル、３２・・・・・・コンデンサ、４・・・・・・出力
電圧検出装置、５・・・・・・負荷、１００・・・・・
・電圧コントローラ、１０５・・・・・・出力電圧基準
、１１Ｇ・・・・・・ＰＷＭ点弧信号発生回路、１１１
・・・・・・プラス側トランジスタ点弧信号発生回路、
１１２・・・・・・マイナス側トランジスタ点弧信号発
生回路、１２０・・・・・・発振器、１３０・・・・・
・分周器、１４０・・・・・・１４１・・・・・・ＡＮ
Ｄゲート、１４２・・・・・・１４３・・・・・・ＯＲ
ゲート、１４４・・・・・・ＮＯＴゲート、６・・・・
・・シャント、４００・・・・・・２１０・・・・・・
ＰＷＭ点弧信号発生回路、２０１・・・・・・２１１・
・・・・・プラス側トランジスタ点弧信号発生回路、２
０２・・・・・・２１２・・・・・・マイナス側トラン
ジスタ点弧信号発生回路、２２０・・・・・・有効電力
、無効電力検出回路、２３０・・・・・・２３１・・・
・・・スイッチ。なお、図中同一符号は同−又は相当部
分を示す。Fig. 1 is a main circuit configuration diagram of a conventional CVCF inverter, Fig. 2 is a block diagram of a conventional PWM type CVCF control circuit, Fig. 3 is a waveform diagram of various parts of a conventional PWM type CVCF control circuit, and Fig. 4 is a block diagram of a conventional PWM type CVCF control circuit. A correspondence diagram showing the change in output voltage waveform depending on the output current direction, Fig. 5 is a main circuit configuration diagram of the CVCF inverter of the present invention, and Fig. 6 is a PWM type CVCF of the present invention.
FIG. 7 is a block diagram of the control circuit, FIG. 7 is an explanatory diagram of the operation of the output power detection circuit, and FIG. 8 is a waveform diagram of each part of the PWM type CVCF control circuit of the present invention. 1...Inverter, 11...14...
...transistor, 15...18...
...Diode, 2...DC power supply, 3...
...High frequency absorption filter, 31...Reactor, 32...Capacitor, 4...Output voltage detection device, 5...Load, 100...・・・
・Voltage controller, 105...Output voltage reference, 11G...PWM firing signal generation circuit, 111
・・・・・・Positive side transistor firing signal generation circuit,
112... Negative side transistor firing signal generation circuit, 120... Oscillator, 130...
・Frequency divider, 140...141...AN
D gate, 142...143...OR
Gate, 144... NOT Gate, 6...
...Shunt, 400...210...
PWM ignition signal generation circuit, 201...211.
...Positive side transistor firing signal generation circuit, 2
02...212...Negative side transistor firing signal generation circuit, 220...Active power, reactive power detection circuit, 230...231...
···switch. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

output current detection means for detecting the direction of output current in the inverter circuit; and an active power/reactive power detection circuit for receiving a detection signal from the output current detection means, discriminating between active power and reactive power, and generating a detection signal. , an inverter firing signal generation circuit that generates an ideal output voltage when active power is supplied by the output signal of the active power detection circuit; and an inverter firing signal generation circuit that generates the ideal output voltage when reactive power is supplied by the output signal of the reactive power detection circuit. and a signal generation circuit, the pulse generator is configured to automatically determine whether active power is being supplied or reactive power is being supplied, and the inverter ignition signal generation circuit is switched based on the determination results. Constant voltage constant frequency control device with width modulation control.