US 11,677,245 B2
Direct-current power distribution in a control system
Stuart W. DeJonge, Riegelsville, PA (US); and Chen Ming Wu, Emmaus, PA (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Sep. 16, 2021, as Appl. No. 17/477,463.
Claims priority of provisional application 63/105,033, filed on Oct. 23, 2020.
Claims priority of provisional application 63/078,976, filed on Sep. 16, 2020.
Prior Publication US 2022/0085610 A1, Mar. 17, 2022
Int. Cl. E06B 9/68 (2006.01); H02J 3/28 (2006.01); H02J 3/00 (2006.01)
CPC H02J 3/28 (2013.01) [E06B 9/68 (2013.01); H02J 3/001 (2020.01); E06B 2009/6809 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A load control system for controlling a plurality of electrical loads, the load control system comprising:
a bus power supply comprising a power converter configured to generate a bus voltage on a power bus, wherein the bus power supply has a power capability that defines a maximum amount of power that the bus power supply can deliver over the power bus; and
a plurality of drive units, wherein each drive unit comprises:
a power limiting circuit configured to conduct current from the power bus and generate a supply voltage;
a load circuit configured to receive the supply voltage and control power delivered to an electrical load; and
a control circuit configured to:
determine an allocated amount of power that the drive unit can consume from the power bus based on an amount of power required by the drive unit, a cumulative total power required by the plurality of drive units, and the power capability of the bus power supply; and
control the power limiting circuit to consume the allocated amount of power from the power bus.