公开(公告)号：US08773035B2

公开(公告)日：2014-07-08

申请号：US13789181

申请日：2013-03-07

Applicant: Delta Electronics, Inc.

Inventor： Chang-Ching Wang ,  Chin-Ho Chou ,  Chih Lo ,  Weng-Fatt Chan

IPC: H05B41/24 ,  H05B41/16

CPC classification number: H05B41/28 ,  Y10S315/05

Abstract: An electronic ballast includes a converter, an inverter circuit, a controlling unit, and a current crest factor improvement circuit. The controlling unit issues a first control signal to control the converter and issues a second control signal and a third control signal with opposite enabling/disabling states to control on/off states of corresponding switch elements of the inverter circuit. During a dead time between the enabling state of second control signal and the enabling state of the third control signal, these switch elements are simultaneously in the off state. During the dead time, the current crest factor improvement circuit is triggered to generate a restraining signal. According to the restraining signal, an output power of the converter is decreased to a predetermined value in real time or the converter is suspended.

Abstract translation: 电子镇流器包括转换器，逆变器电路，控制单元和电流波峰因数改善电路。 控制单元发出第一控制信号以控制转换器并发出具有相反使能/禁止状态的第二控制信号和第三控制信号，以控制逆变器电路的相应开关元件的导通/截止状态。 在第二控制信号的使能状态和第三控制信号的使能状态之间的停滞时间期间，这些开关元件同时处于关闭状态。 在死区时间内，触发电流波峰因数改善电路产生抑制信号。 根据抑制信号，转换器的输出功率实时地减小到预定值，或者转换器被暂停。

公开(公告)号：US20140139127A1

公开(公告)日：2014-05-22

申请号：US13789181

申请日：2013-03-07

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chang-Ching Wang ,  Ching-Ho Chou ,  Chih Lo ,  Weng-Fatt Chan

IPC: H05B41/16

CPC classification number: H05B41/28 ,  Y10S315/05

Abstract: An electronic ballast includes a converter, an inverter circuit, a controlling unit, and a current crest factor improvement circuit. The controlling unit issues a first control signal to control the converter and issues a second control signal and a third control signal with opposite enabling/disabling states to control on/off states of corresponding switch elements of the inverter circuit. During a dead time between the enabling state of second control signal and the enabling state of the third control signal, these switch elements are simultaneously in the off state. During the dead time, the current crest factor improvement circuit is triggered to generate a restraining signal. According to the restraining signal, an output power of the converter is decreased to a predetermined value in real time or the converter is suspended.

Abstract translation: 电子镇流器包括转换器，逆变器电路，控制单元和电流波峰因数改善电路。 控制单元发出第一控制信号以控制转换器并发出具有相反使能/禁止状态的第二控制信号和第三控制信号，以控制逆变器电路的相应开关元件的导通/截止状态。 在第二控制信号的使能状态和第三控制信号的使能状态之间的停滞时间期间，这些开关元件同时处于关闭状态。 在死区时间内，触发电流波峰因数改善电路产生抑制信号。 根据抑制信号，转换器的输出功率实时地减小到预定值，或者转换器被暂停。