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1. 发明申请

WO2012024383A2 METHOD OF CONTROLLING AN OPERATING FREQUENCY OF AN INVERTER CIRCUIT IN AN ELECTRONIC DIMMING BALLAST 审中-公开
标题翻译：在电子调光镇流器中控制逆变器电路工作频率的方法
公开(公告)号：WO2012024383A2
公开(公告)日：2012-02-23
申请号：PCT/US2011048063
申请日：2011-08-17
申请人： LUTRON ELECTRONICS CO , CHRISTENSEN GRAHAM L , MEROLA REBECCA A , SHEARER THOMAS M , VESKOVIC DRAGAN
发明人： CHRISTENSEN GRAHAM L , MEROLA REBECCA A , SHEARER THOMAS M , VESKOVIC DRAGAN
IPC分类号： H05B41/282 , H05B41/36
CPC分类号： H05B41/2856 , H05B41/2828
摘要： An electronic ballast having an inverter circuit for driving a gas discharge lamp prevents allows some hard switching to occur in the inverter circuit in order to ensure adequate ballasting impedance to provide stable operation of the lamp, but not enough hard switching to generate excessive power loss in the inverter circuit. The inverter circuit comprises two switching devices that are coupled in series between a DC bus voltage and circuit common and are rendered conductive on a complementary basis, such that a high-frequency output voltage is generated at the junction of the switching devices. When the intensity of the lamp is at or near a low-end intensity, an operating frequency of the high-frequency output voltage is controlled to a low-end frequency that is low enough to ensure stable operation of the lamp and to allow some hard switching to occur in the switching devices, but high enough to prevent excessive power loss due to the hard switching in the switching devices.
摘要翻译：具有用于驱动气体放电灯的逆变器电路的电子镇流器防止在逆变器电路中发生一些硬切换，以便确保足够的镇流阻抗以提供灯的稳定操作，但是没有足够的硬切换来产生过多的功率损失逆变器电路。逆变器电路包括两个开关装置，其串联耦合在DC总线电压和电路公共端之间，并且在互补的基础上导通，使得在开关装置的连接处产生高频输出电压。当灯的强度处于或接近低端强度时，将高频输出电压的操作频率控制为足够低的低端频率，以确保灯的稳定操作并允许一些困难在交换设备中发生切换，但是足够高以防止由于交换设备中的硬切换导致的过度的功率损失。

2. 发明申请

WO2012024383A3 METHOD OF CONTROLLING AN OPERATING FREQUENCY OF AN INVERTER CIRCUIT IN AN ELECTRONIC DIMMING BALLAST 审中-公开
公开(公告)号：WO2012024383A3
公开(公告)日：2012-02-23
申请号：PCT/US2011/048063
申请日：2011-08-17
申请人： LUTRON ELECTRONICS CO., INC. , CHRISTENSEN, Graham, L. , MEROLA, Rebecca, A. , SHEARER, Thomas, M. , VESKOVIC, Dragan
发明人： CHRISTENSEN, Graham, L. , MEROLA, Rebecca, A. , SHEARER, Thomas, M. , VESKOVIC, Dragan
IPC分类号： H05B41/282 , H05B41/285 , H03K17/16
摘要： An electronic ballast having an inverter circuit for driving a gas discharge lamp prevents allows some hard switching to occur in the inverter circuit in order to ensure adequate ballasting impedance to provide stable operation of the lamp, but not enough hard switching to generate excessive power loss in the inverter circuit. The inverter circuit comprises two switching devices that are coupled in series between a DC bus voltage and circuit common and are rendered conductive on a complementary basis, such that a high-frequency output voltage is generated at the junction of the switching devices. When the intensity of the lamp is at or near a low-end intensity, an operating frequency of the high-frequency output voltage is controlled to a low-end frequency that is low enough to ensure stable operation of the lamp and to allow some hard switching to occur in the switching devices, but high enough to prevent excessive power loss due to the hard switching in the switching devices.

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