公开(公告)号：US20060013026A1

公开(公告)日：2006-01-19

申请号：US11177928

申请日：2005-07-08

申请人： Wolfgang Frank ,  Michael Herfurth ,  Sven Kolberg

发明人： Wolfgang Frank ,  Michael Herfurth ,  Sven Kolberg

IPC分类号： H02M7/04

CPC分类号： H02M1/4225 ,  Y02B70/126 ,  Y02P80/112

摘要： The invention relates to a method for provision of a drive signal for a switch which controls the current drawn by an inductive energy storage element in a power factor correction circuit in which a control signal which controls the power consumption is available. One drive cycle of the switch comprises: detection of a predetermined storage state of the inductive energy storage element; when the predetermined storage state of the storage element is detected, production of a switching-on level for the drive signal for a regular switched-on duration which is dependent on the control signal or for a maximum switched-on duration which is dependent on an input voltage, when the regular switched-on duration is greater than the maximum switched-on and production of a switching-off level for the drive signal for a switched-off duration until the next detection of the predetermined storage state.

摘要翻译： 本发明涉及一种用于提供开关的驱动信号的方法，所述开关控制由功率因数校正电路中的感应能量存储元件引起的电流，其中控制功率消耗的控制信号可用。 开关的一个驱动周期包括：检测感应能量存储元件的预定存储状态; 当检测到存储元件的预定存储状态时，产生取决于控制信号的正常接通持续时间的驱动信号的接通电平或取决于控制信号的最大接通持续时间的接通电平 输入电压，当常规接通持续时间大于最大接通时间时，产生用于关断持续时间的驱动信号的关断电平，直到下一次检测到预定的存储状态。

公开(公告)号：US06806694B2

公开(公告)日：2004-10-19

申请号：US10622980

申请日：2003-07-18

申请人： Roland Rupp ,  Ilia Zverev ,  Michael Herfurth

发明人： Roland Rupp ,  Ilia Zverev ,  Michael Herfurth

IPC分类号： G05F140

CPC分类号： H02M1/4225 ,  H02M1/36 ,  Y02B70/126 ,  Y10S323/901

摘要： A switching regulator has a drive circuit, receiving an intermediate circuit input voltage, an output voltage of an intermediate circuit capacitor and an output current at a current measuring element and controls the electrical output parameters and the power factor of the switching regulator in accordance with an adjustable desired value by controlling the duty ratio of a power switch. The drive circuit has a start circuit for dynamically increasing a current limiting level for the power switch during a start time after the switch-on instant of the switching regulator from an initially low level up to a current-limiting desired level at the end of the start time. The loading current-time integral for the diode and the power switch of the power factor correction circuit of the switching regulator is the least with this soft start circuit. Moreover, noise due to abrupt magnetic driving of the inductor is avoided.

公开(公告)号：US5982642A

公开(公告)日：1999-11-09

申请号：US287806

申请日：1999-04-07

申请人： Michael Herfurth

发明人： Michael Herfurth

IPC分类号： H02M1/12 ,  H02M1/00 ,  H02M1/42 ,  H02M3/335

CPC分类号： H02M1/4225 ,  H02M3/33569 ,  H02M2001/0006 ,  H02M2001/0032 ,  H02M2001/007 ,  H02M2001/009 ,  Y02B70/126 ,  Y02B70/16

摘要： A pulsed power supply of switched-mode power supplies, in particular for switched-mode power supplies with stand-by operation, has a main converter for the electrical isolation of primary and secondary circuits, as well as for transforming the voltages of the primary and secondary circuits. The pulsed power supply further has a pulsed second converter and a first closed-loop control circuit for an intermediate circuit voltage. The first closed-loop control circuit being assigned to the second converter and has a first output circuit connected on a downstream side of the second converter. A second closed-loop control circuit is provided for the intermediate circuit voltage. The second closed-loop control circuit is assigned to the second converter and is superimposed on the first closed-loop control circuit such that it can be activated at least temporarily or completely replaces the first closed-loop control circuit at least temporarily. The control time constant of the first closed-loop control circuit being greater than the control time constant of the second closed-loop control circuit.

摘要翻译： 开关型电源的脉冲电源，特别是具有待机操作的开关式电源的脉冲电源具有用于一次和二次电路的电隔离的主转换器，以及用于转换主电源和 次级电路。 脉冲电源还具有用于中间电路电压的脉冲第二转换器和第一闭环控制电路。 第一闭环控制电路被分配给第二转换器，并且具有连接在第二转换器的下游侧的第一输出电路。 为中间电路电压提供第二闭环控制电路。 第二闭环控制电路被分配给第二转换器，并且叠加在第一闭环控制电路上，使得其可以至少暂时地至少暂时地或完全地替代第一闭环控制电路。 第一闭环控制电路的控制时间常数大于第二闭环控制电路的控制时间常数。

公开(公告)号：US5049790A

公开(公告)日：1991-09-17

申请号：US410920

申请日：1989-09-22

申请人： Michael Herfurth ,  Ali-Ihsan Soeylemez

发明人： Michael Herfurth ,  Ali-Ihsan Soeylemez

IPC分类号： H05B41/24 ,  H05B41/298

CPC分类号： H05B41/382 ,  H05B41/2981 ,  Y02B20/204 ,  Y10S315/04

摘要： A method and apparatus for operating at least one gas discharge lamp includes supplying a gas discharge lamp with high-frequency alternating voltage from an externally controlled lamp generator having an operating frequency being variable for dimming the gas discharge lamp. The state of the gas discharge lamp is monitored. A preheating phase with an ensuing starting phase are provided for firing the gas discharge lamp. The operating frequency of the lamp generator during the preheating phase is adjusted to be greater than a rated frequency in rated operation. The operating frequency at the beginning of the starting phase is reduced until the gas discharge lamp has attained a predetermined state and the operating frequency is subsequently maintained at least at an instantaneous value thereof until the gas discharge lamp fires. The operating frequency at the end of the starting phase is reduced to the rated frequency, thereby initiating rated operation. The operating frequency is varied for dimming in an ensuing dimming operation.

摘要翻译： 一种用于操作至少一个气体放电灯的方法和装置包括从具有可变的工作频率的外部控制的灯发生器向气体放电灯提供高频交流电压，以使气体放电灯变暗。 监视气体放电灯的状态。 提供具有随后的起始阶段的预热阶段用于点燃气体放电灯。 在预热阶段，灯发电机的工作频率在额定运行中调整为大于额定频率。 启动阶段开始时的工作频率降低，直到气体放电灯达到预定状态，并且操作频率随后至少保持在其瞬时值，直到气体放电灯点火。 启动阶段结束时的工作频率降低到额定频率，从而启动额定运行。 在随后的调光操作中，操作频率变化以进行调光。