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1. 发明公开

KR1020040101063A 직류-교류 변환 장치, 및 교류 전력 공급 방법 失效
标题翻译： DC / AC转换器和使用PWM控制半导体开关供电的方法
公开(公告)号：KR1020040101063A
公开(公告)日：2004-12-02
申请号：KR1020040036331
申请日：2004-05-21
申请人： 로무 가부시키가이샤
发明人： 도다히로키 , 후쿠모토겐이치 , 아오야기요스케 , 후지타히로유키
IPC分类号： H02M7/538 , H02M7/48 , H05B41/24 , H05B41/392
CPC分类号： H02M7/5381 , H02M3/3372 , H02M2001/0048 , H05B41/2824 , H05B41/3927 , Y02B70/1491
摘要： PURPOSE: A DC/AC converter and a method for supplying AC power are provided to control a power supply to loads by controlling a semiconductor switch using PWM(Pulse Width Modulation). CONSTITUTION: A DC/AC converter includes a transformer(TR) having a primary winding with a center tap and at least one secondary winding, a first semiconductor switch(101) connected between one end of the primary winding and a second potential point of the DC power source, a second semiconductor switch(102) connected between the other end of the primary winding and the second potential point, a first capacitor(105) and a third semiconductor switch(103) connected in series between the other end of the primary winding and the center tap, a second capacitor(106) and a fourth semiconductor switch(104) connected in series between the one end of the primary winding and the center tap, a current detection circuit(200) for detecting an electric current flowing into a load connected to the secondary winding, a pulse width modulation circuit, and a logic circuit. The pulse width modulation circuit produces a pulse width modulation signal by comparing a feedback signal formed on the basis of an electric current detected by the current detection circuit with a triangular wave signal train.
摘要翻译：目的：提供DC / AC转换器和提供交流电源的方法，以通过使用PWM（脉宽调制）控制半导体开关来控制负载的电源。构成：DC / AC转换器包括具有中心抽头的初级绕组和至少一个次级绕组的变压器（TR），连接在初级绕组的一端与第一级绕组的第二电位之间的第一半导体开关（101）直流电源，连接在初级绕组的另一端和第二电位点之间的第二半导体开关（102），串联连接在初级绕组的另一端之间的第一电容器（105）和第三半导体开关（103）绕组和中心抽头，串联连接在初级绕组的一端和中心抽头之间的第二电容器（106）和第四半导体开关（104），用于检测流入电流的电流的电流检测电路（200）连接到次级绕组的负载，脉宽调制电路和逻辑电路。脉冲宽度调制电路通过将基于由电流检测电路检测的电流形成的反馈信号与三角波信号串相比较来产生脉宽调制信号。

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