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    • 1. 发明申请
    • Ballast with Arc Protection Circuit
    • 镇流器与电弧保护电路
    • US20080067950A1
    • 2008-03-20
    • US11867905
    • 2007-10-05
    • Qinghong YuGrigoriy A. TrestmanJohn G. KonopkaJoseph L. Parisella
    • Qinghong YuGrigoriy A. TrestmanJohn G. KonopkaJoseph L. Parisella
    • H05B41/16H05B37/00
    • H05B41/2851Y02B20/185Y02B20/186
    • A ballast (20) for powering one or more gas discharge lamps (70,72,74,76) comprises an inverter (200), an output circuit (300), and an arc protection circuit (400). Arc protection circuit (400) monitors an electrical signal within the output circuit (300). When an arcing condition occurs at the ballast output connections (302,304,306,308,310), the electrical signal includes a high frequency component having a fundamental frequency that is much greater than the normal operating frequency of the inverter (200). In response to the high frequency component exceeding a predetermined threshold, arc protection circuit (400) disables the inverter (200) for a predetermined shutdown period. Arc protection circuit (400) also provides a restart function for periodically attempting to ignite and operate the lamps. Arc protection circuit (400) is preferably realized using a microcontroller integrated circuit (440) with associated discrete circuitry, and is especially well-suited for use in ballasts for powering multiple lamps via a current-fed self-oscillating inverter and an isolated parallel resonant output circuit.
    • 用于为一个或多个气体放电灯(70,72,74,76)供电的镇流器(20)包括逆变器(200),输出电路(300)和电弧保护电路(400)。 电弧保护电路(400)监视输出电路(300)内的电信号。 当在镇流器输出连接(302,304,306,308,310)处发生电弧状态时,电信号包括具有比逆变器(200)的正常工作频率大得多的基频的高频分量。 响应于超过预定阈值的高频分量,电弧保护电路(400)在预定的停机时间内禁用逆变器(200)。 电弧保护电路(400)还提供重新启动功能,用于周期性地尝试点燃和操作灯。 电弧保护电路(400)优选使用具有相关联的分立电路的微控制器集成电路(440)来实现,并且特别适用于通过电流馈给的自激振荡反相器和隔离的并联谐振器为多个灯供电的镇流器 输出电路。
    • 2. 发明授权
    • Ballast with arc protection circuit
    • 镇流器带电弧保护电路
    • US07288901B1
    • 2007-10-30
    • US11532277
    • 2006-09-15
    • Qinghong YuGrigoriy A. TrestmanJohn KonopkaJoseph L. Parisella
    • Qinghong YuGrigoriy A. TrestmanJohn KonopkaJoseph L. Parisella
    • G05F1/00
    • H05B41/2851Y02B20/185Y02B20/186
    • A ballast (20) for powering one or more gas discharge lamps (70,72,74,76) comprises an inverter (200), an output circuit (300), and an arc protection circuit (400). Arc protection circuit (400) monitors an electrical signal within the output circuit (300). When an arcing condition occurs at the ballast output connections (302,304,306,308,310), the electrical signal includes a high frequency component having a fundamental frequency that is much greater than the normal operating frequency of the inverter (200). In response to the high frequency component exceeding a predetermined threshold, arc protection circuit (400) disables the inverter (200) for a predetermined shutdown period. Arc protection circuit (400) also provides a restart function for periodically attempting to ignite and operate the lamps. Arc protection circuit (400) is preferably realized using a microcontroller integrated circuit (440) with associated discrete circuitry, and is especially well-suited for use in ballasts for powering multiple lamps via a current-fed self-oscillating inverter and an isolated parallel resonant output circuit.
    • 用于为一个或多个气体放电灯(70,72,74,76)供电的镇流器(20)包括逆变器(200),输出电路(300)和电弧保护电路(400)。 电弧保护电路(400)监视输出电路(300)内的电信号。 当在镇流器输出连接(302,304,306,308,310)处发生电弧状态时,电信号包括具有比逆变器(200)的正常工作频率大得多的基频的高频分量。 响应于超过预定阈值的高频分量,电弧保护电路(400)在预定的停机时间内禁用逆变器(200)。 电弧保护电路(400)还提供重新启动功能,用于周期性地尝试点燃和操作灯。 电弧保护电路(400)优选使用具有相关联的分立电路的微控制器集成电路(440)来实现,并且特别适用于通过电流馈给的自激振荡反相器和隔离的并联谐振器为多个灯供电的镇流器 输出电路。
    • 4. 发明授权
    • Ballast with end-of-lamp-life protection circuit
    • 镇流器与灯灭寿命保护电路
    • US07102297B2
    • 2006-09-05
    • US11096008
    • 2005-03-31
    • Grigoriy A. TrestmanJoseph L. Parisella
    • Grigoriy A. TrestmanJoseph L. Parisella
    • H05B41/16
    • H05B41/2855
    • An electronic ballast (10) for powering a lamp load comprising an even number of gas discharge lamps (30,32, . . . ,34,36) includes an inverter (300), an output circuit (400), and a protection circuit (500). During operation, protection circuit (500) disables the inverter (300) in response to an end-of-lamp-life condition that is characterized by a predetermined imbalance in the operating current provided to each of the even number of lamps. Preferably, the output circuit (400) includes a current-sensing transformer (480) for detecting the predetermined imbalance, and the protection circuit (500) includes a silicon-controlled rectifier (530) for disabling the inverter (300).
    • 包括偶数个气体放电灯(30,32,...,34,36)的灯负载供电的电子镇流器(10)包括逆变器(300),输出电路(400)和保护电路 (500)。 在操作期间,保护电路(500)响应于终端灯寿命状况禁用逆变器(300),其特征在于为每个偶数个灯提供的工作电流的预定不平衡。 优选地,输出电路(400)包括用于检测预定不平衡的电流检测变压器(480),并且保护电路(500)包括用于禁用逆变器(300)的硅控整流器(530)。
    • 6. 发明授权
    • Three-phase electronic ballast with improved three-phase EMI filter
    • 三相电子镇流器具有改进的三相EMI滤波器
    • US07276859B1
    • 2007-10-02
    • US11536510
    • 2006-09-28
    • Grigoriy A. Trestman
    • Grigoriy A. Trestman
    • H05B37/00
    • H05B41/02H02M1/126H02M1/44H04B15/005Y10S315/05
    • A ballast (20) for powering at least one gas discharge lamp (52) from a three-phase AC voltage source (30) comprises a three-phase rectifier circuit (200), a high frequency filter capacitor (300), a high frequency inverter (400), and a three-phase EMI filter (500). Three-phase EMI filter (500) comprises a common-mode EMI inductor (510), a Y-capacitor (540), and a plurality of X-capacitors (550,560,570). Common-mode EMI inductor (510) comprises three magnetically coupled windings (512,514; 522,524; 532,534) each of which is, preferably, split into two equal winding sections. Ballast (20) and three-phase EMI filter (500) provide substantial cost and performance benefits in comparison with existing approaches.
    • 用于从三相AC电压源(30)向至少一个气体放电灯(52)供电的镇流器(20)包括三相整流器电路(200),高频滤波电容器(300),高频 逆变器(400)和三相EMI滤波器(500)。 三相EMI滤波器(500)包括共模EMI电感器(510),Y电容器(540)和多个X电容器(550,560,570)。 共模EMI电感器(510)包括三个磁耦合绕组(512,514; 522,524; 532,534),每个绕组最好分成两个相等的绕组部分。 与现有方法相比,镇流器(20)和三相EMI滤波器(500)提供了显着的成本和性能优势。