公开(公告)号：EP1727267A3

公开(公告)日：2010-04-07

申请号：EP06270015.8

申请日：2006-02-10

申请人： Electronic Theatre Controls, Inc.

发明人： Burke, Kevin D. ,  Rasmussen, Eric G.

IPC分类号： H02M5/293

CPC分类号： H02M5/293 ,  H05B39/047 ,  Y02B20/144 ,  Y10S315/04

摘要： The solid state switching section of a high frequency PWM switching power supply (20) may encounter problems in accurately regulating output power when the requested output power is above a threshold level, the threshold level typically being a high level approaching one hundred percent of the power of the sinusoidal AC power source (22). Below the threshold level, the power supply is operated in a full PWM mode to regulate the output power level. Above the threshold level, the power supply is operated in a full on, continuously conducting mode in a central part of the half cycles of the AC supply. Outside of this central portion, the power supply is operated in the PWM mode, using a duty cycle within the capability of the solid state switching section (26). The output power level is regulated by varying the duration of the central full on portion of the half cycle. A similar control method is used for reducing heat generated by the solid state switching section of the power supply.

公开(公告)号：EP1727403B1

公开(公告)日：2008-04-09

申请号：EP06270016.6

申请日：2006-02-10

申请人： Electronic Theatre Controls, Inc.

发明人： Thurk, John P. ,  Rasmussen, Eric G. ,  Suomi, Eric W.

IPC分类号： H05B41/392

CPC分类号： H05B41/2856 ,  Y02B20/186

公开(公告)号：EP1727267A2

公开(公告)日：2006-11-29

申请号：EP06270015.8

申请日：2006-02-10

申请人： Electronic Theatre Controls, Inc.

发明人： Burke, Kevin D. ,  Rasmussen, Eric G.

IPC分类号： H02M5/293

CPC分类号： H02M5/293 ,  H05B39/047 ,  Y02B20/144 ,  Y10S315/04

摘要： The solid state switching section of a high frequency PWM switching power supply (20) may encounter problems in accurately regulating output power when the requested output power is above a threshold level, the threshold level typically being a high level approaching one hundred percent of the power of the sinusoidal AC power source (22). Below the threshold level, the power supply is operated in a full PWM mode to regulate the output power level. Above the threshold level, the power supply is operated in a full on, continuously conducting mode in a central part of the half cycles of the AC supply. Outside of this central portion, the power supply is operated in the PWM mode, using a duty cycle within the capability of the solid state switching section (26). The output power level is regulated by varying the duration of the central full on portion of the half cycle. A similar control method is used for reducing heat generated by the solid state switching section of the power supply.

摘要翻译： 当所请求的输出功率高于阈值电平时，高频PWM开关电源（20）的固态切换部分可能会遇到精确调节输出功率的问题，该阈值电平通常是接近功率百分之一百的高电平 的正弦交流电源（22）。 低于门限电平时，电源以完全PWM模式运行，以调节输出功率电平。 高于阈值电平时，电源在交流电源的半个周期的中心部分以全导通，连续导通模式工作。 在该中心部分之外，使用在固态切换部分（26）的能力内的占空比在PWM模式下操作电源。 输出功率电平通过改变半周期的中央充满电部分的持续时间来调节。 使用类似的控制方法来减少由电源的固态切换部产生的热量。

公开(公告)号：EP1686679A1

公开(公告)日：2006-08-02

申请号：EP06270007.5

申请日：2006-01-20

申请人： Electronic Theatre Controls, Inc.

发明人： Rasmussen, Eric G. ,  Thurk, John P. ,  Suomi, Eric W.

IPC分类号： H02M5/293

CPC分类号： H02M1/44 ,  H02M1/32 ,  H02M5/293 ,  H02M2001/0009 ,  H05B39/00 ,  H05B39/044 ,  H05K1/0306 ,  H05K1/14 ,  H05K1/144 ,  H05K3/0061 ,  H05K3/222 ,  H05K2201/10166 ,  Y02B20/146

摘要： Current sensing resistors are connected directly to output terminals of MOSFETs forming the series switching stage of a PWM sinewave dimmer. An analog sensed current signal is coupled through an EMI resistant current link to comparators that provide an overcurrent indication in response to an overcurrent condition. A logic circuit overrides PWM control signals from a programmable controller, and operates drivers to render the series switching stage nonconductive and to render a clamp switching stage conductive until after the end of the current PWM duty cycle power on segment. The logic circuit sends an overcurrent signal through an optocoupler to an input of the programmable controller. The input of the controller is polled at a clock frequency for overcurrent signals and if the count exceeds a limit in any half cycle, or a maximum sum in sixteen half cycles of the AC supply, the series switching stage is rendered nonconductive and the clamp switching stage is rendered conductive pending a reset signal.

摘要翻译： 电流检测电阻直接连接到形成PWM正弦波调光器的串联开关级的MOSFET的输出端。 模拟感测电流信号通过抗EMI电流链路耦合到提供响应于过电流状况的过电流指示的比较器。 逻辑电路覆盖来自可编程控制器的PWM控制信号，并且操作驱动器以使串联开关级不导通并且使得钳位开关级导通，直到电流PWM占空比上电为止。 逻辑电路通过光耦合器将过电流信号发送到可编程控制器的输入端。 控制器的输入以过电流信号的时钟频率进行轮询，如果计数超过任何半周期的限制，或交流电源的十六个半周期内的最大和，则串联切换级变为不导通，钳位切换 在复位信号之前，阶段被导通。

公开(公告)号：EP1686679B1

公开(公告)日：2011-09-21

申请号：EP06270007.5

申请日：2006-01-20

申请人： Electronic Theatre Controls, Inc.

发明人： Rasmussen, Eric G. ,  Thurk, John P. ,  Suomi, Eric W.

IPC分类号： H02M5/293

CPC分类号： H02M1/44 ,  H02M1/32 ,  H02M5/293 ,  H02M2001/0009 ,  H05B39/00 ,  H05B39/044 ,  H05K1/0306 ,  H05K1/14 ,  H05K1/144 ,  H05K3/0061 ,  H05K3/222 ,  H05K2201/10166 ,  Y02B20/146

公开(公告)号：EP1727403A1

公开(公告)日：2006-11-29

申请号：EP06270016.6

申请日：2006-02-10

申请人： Electronic Theatre Controls, Inc.

发明人： Thurk, John P. ,  Rasmussen, Eric G. ,  Suomi, Eric W.

IPC分类号： H05B41/392

CPC分类号： H05B41/2856 ,  Y02B20/186

摘要： A current sensing transformer (57) having a low impedance primary winding (100) is connected in series with a filter (38) and load circuit (24) supplied with output current by a high frequency switching PWM power supply (20) such as a sinewave dimmer. Sensed output current is supplied to a microprocessor based programmable controller (56). The controller (56) performs a routine including a family of overcurrent tests (116, 118, 120). Tests of the family are satisfied by the presence of different output current values for different time durations. At least one (120A, 120B) of the tests is enabled only at low requested output voltages or dimming levels. In response to satisfaction of any of the tests, a series power switching stage (26) of the power supply (20) is rendered nonconductive to shut down the power supply.

摘要翻译： 具有低阻抗初级绕组（100）的电流感测变压器（57）与通过高频开关PWM电源（20）提供输出电流的滤波器（38）和负载电路（24）串联连接，例如 正弦波调光 感测的输出电流被提供给基于微处理器的可编程控制器（56）。 控制器（56）执行包括一系列过电流测试（116,118,120）的程序。 在不同的持续时间内存在不同的输出电流值可以满足家庭的测试。 至少一个（120A，120B）的测试仅在低要求的输出电压或调光水平下启用。 响应于任何测试的满足，电源（20）的串联功率开关级（26）变得不导通以关闭电源。