JPS58172388U

JPS58172388U - Inverter destruction prevention device

Info

Publication number: JPS58172388U
Application number: JP6923882U
Authority: JP
Inventors: 片山　直裕; 忠良木村
Original assignee: 澤藤電機株式会社
Priority date: 1982-05-12
Filing date: 1982-05-12
Publication date: 1983-11-17

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図は本考案が適用される電源装置の一実施例構成、
第２図は本考案に用いられる逆変換回路におけるメイン
・スイッチング素子の接続態様を説明する説明図、第３
図は従来の考え方を説明する説明図、第４図は本考案に
用いる論理ユニット′を説明する説明図、第５図および
第６図は夫々本考案の一実施例構成を示す。図中、５は順変換回路、６はフィルタ、７は逆変換回路
、８はフィルタ、９は変圧器、１０はマイクロ・プロセ
ッサ、１１は順変換ゲート制御回路、１２はトランジス
タ・ドライブ回路、１６は論理回路、Ｑ、、　Ｑ２．　
Ｑ、、　Ｑ４は夫々メイン・スイッチング素子を表わす
。 −才２目 −ｌ轟■ 才４ｆＩFIG. 1 shows the configuration of an embodiment of a power supply device to which the present invention is applied.
Figure 2 is an explanatory diagram illustrating the connection mode of the main switching elements in the inverse conversion circuit used in the present invention;
FIG. 4 is an explanatory diagram for explaining the conventional concept, FIG. 4 is an explanatory diagram for explaining the logic unit' used in the present invention, and FIGS. 5 and 6 each show the configuration of an embodiment of the present invention. In the figure, 5 is a forward conversion circuit, 6 is a filter, 7 is an inverse conversion circuit, 8 is a filter, 9 is a transformer, 10 is a microprocessor, 11 is a forward conversion gate control circuit, 12 is a transistor drive circuit, 16 is a logic circuit, Q,, Q2.
Q, , Q4 represent main switching elements, respectively. -Sai2m-l Todoroki■ Sai4fI

Claims

[Scope of utility model registration request]

It is equipped with a forward conversion circuit that converts AC voltage into DC voltage and an inverse conversion circuit that converts the DC voltage converted by the forward conversion circuit into AC voltage, and the main switching element of the inverse conversion circuit connects the bridge circuit to the groove. In a power supply device configured such that main switching elements that are diagonally opposed to each other and are not directly connected in series are turned on at the same time, among the main switching elements that make up the bridge circuit, , for the control inputs of both main switching elements directly connected to each other in series, when only one of the control inputs is at logic rlJ, logic "1" is applied to one of the switching elements. or a logic "0" to both switching elements, and when both control inputs are both at a logic "1" or a logic "0", a logic "0" is applied to both switching elements. A logic circuit unit configured to provide a logic "1" to either one of the switching elements is provided, and a side input source for the main switching element and each of the above. An inverter destruction prevention device characterized in that the above logic circuit unit is interposed between the main switching element control input and the main switching element control input.