JPS60135087U

JPS60135087U - Inverter

Info

Publication number: JPS60135087U
Application number: JP2256484U
Authority: JP
Inventors: 義弘小西; 藤原　喜隆
Original assignee: 富士電機株式会社
Priority date: 1984-02-20
Filing date: 1984-02-20
Publication date: 1985-09-07

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図はインバータから単相３線式交流を得る従来例を
示す回路図であり、第２図もれインバータから３相４線
式交流を得る従来例を示す回路図−である。第３図は単
相３線式交流回路を得るための本考案の実施例を示す回
路図であり、第４図は第３図に示す実施例の動作波形図
である。第５図は２相３線式交流回路を得る本考案の第
２の実施例を示す回路図であり、第６図は第５図に示す
本考案の第２の実施例の動作波形図である。第７図は３
相４線式交流回路を得る本考案の第３の実施例を示す回
路図であり、第８図は第７図に示す本考案の第３の実施
例の動作波形図である。１・・・直流電源、２・・・平滑コンデスンサ、３Ａ。３Ｂ、３Ｃ，３Ｄ・・・スイッチング素子、４・・・単
相変圧器、５Ａ、　　５Ｂ、　　５Ｃ，５Ｆ、　　５Ｇ
、　　５Ｈ・・・スイッチング素子、６・・・３相変圧
器、７Ａ、７Ｂ・・・平滑コンデンサ、８Ａ、８Ｂ・・
・分圧抵抗。FIG. 1 is a circuit diagram showing a conventional example of obtaining single-phase three-wire alternating current from an inverter, and FIG. 2 is a circuit diagram showing a conventional example of obtaining three-phase four-wire alternating current from a leakage inverter. FIG. 3 is a circuit diagram showing an embodiment of the present invention for obtaining a single-phase three-wire AC circuit, and FIG. 4 is an operating waveform diagram of the embodiment shown in FIG. FIG. 5 is a circuit diagram showing a second embodiment of the present invention to obtain a two-phase three-wire AC circuit, and FIG. 6 is an operating waveform diagram of the second embodiment of the present invention shown in FIG. be. Figure 7 is 3
FIG. 8 is a circuit diagram showing a third embodiment of the present invention for obtaining a phase four-wire AC circuit, and FIG. 8 is an operation waveform diagram of the third embodiment of the present invention shown in FIG. 7. 1...DC power supply, 2...Smoothing capacitor, 3A. 3B, 3C, 3D... Switching element, 4... Single phase transformer, 5A, 5B, 5C, 5F, 5G
, 5H... Switching element, 6... Three-phase transformer, 7A, 7B... Smoothing capacitor, 8A, 8B...
・Divisional voltage resistance.

Claims

[Scope of utility model registration request]

In an inverter configured to obtain alternating current power by connecting a direct current power source to an inverter formed by bridge-connecting switching elements, the inverter comprises voltage dividing means for dividing a voltage between positive and negative electrodes of the direct current power source into two equal parts, and the bisecting point. An inverter comprising: an AC neutral wire drawn from the AC neutral wire;