LED lighting system with battery for demand management and emergency lighting
摘要
說明書
One of skill in the art will appreciate that even though this disclosure has largely focused on driving LEDs, this same system could also be used with other power-drawing devices such as kitchen appliances, HVAC units, and home theatre equipment to name a few. For instance, instead of LED drivers and a battery backup for LED lighting, the drivers and battery backup could drive a retail audio or PA system that is in near constant use. To avoid decreases in volume or complete shutdown of the audio or PA system, drivers and a battery backup could work together to maintain a constant audio output, for instance, either via a constant drive current or feedback from an audio sensor.
Those of skill in the art will appreciate that although rectification was shown throughout this disclosure as being arranged before step down conversion, in some embodiments, the rectification can occur after the voltage has been stepped down. As one non-limiting example, in
While many discussions focused on two-stage drivers (a step-down converter followed by a current regulating stage), those of skill in the art are capable of applying these systems and methods to single-stage drivers (where the step-down converter also regulates current output).
