Abstract: A system for controlling human centric tunable white lights. A tunable white light fixture and a device comprising a plurality of power outputs. A profile of a plurality of power settings to mix an output of a warm channel and an output of a cool channel of the tunable white light fixture to produce light of a desired brightness and a desired CCT. Information for a scene comprising static brightness and static CCT levels and information for an automatic progression of varying brightness and CCT levels designed to mimic a plurality of properties of the sun's light at predetermined times.

Abstract: A light characteristic of one or more luminaires can be controlled by periodically obtaining a target correlated color temperature (CCT) for a given time of day at the luminaires' location and obtaining a type identifier for each luminaire. The identifier can include information such as model number, serial number, manufacturer, digital-communication data, RFID tag data, QR-code data or user input. A profile for each luminaire is selected from multiple stored profiles based on its type identifier and power-supply settings generated for the DC power supplies powering each luminaire's light emitters using the target CCT and corresponding profile information. The generated power-supply settings are then sent to the respective DC power supplies.

Abstract: A correlated color temperature (CCT) of one or more luminaires is controlled by obtaining a target CCT for the one or more luminaires and obtaining a first profile associated with a first luminaire of the one or more luminaires. A first target power for a first direct-current (DC) power input of the first luminaire and a second target power for a second DC power input of the first luminaire are calculated based on the target CCT and the first profile so that the first target power and the second target power drive the first luminaire to emit light at the target CCT. A first DC power supply is controlled to deliver the first target power to the first DC power input of the first luminaire and a second DC power supply is controlled to deliver the second target power to the second DC power input of the first luminaire.

Abstract: A closed-loop current controller for regulating a current consumption of a load, comprising a current sensor for detecting a present current consumption of the load, a PWM modulator for modulating a PWM signal sent to the load and a controller for receiving an original reference signal representing a target current, the controller calculating an error signal based on a difference between the target current and the present current, the controller using an error-integrating algorithm that adjusts the original reference signal to produce a revised reference signal. The PWM modulator receives the revised reference signal and modulates the PWM signal sent to the load based in part on the revised reference signal.

Abstract: A correlated color temperature (CCT) of one or more luminaires is controlled by obtaining a target CCT for the one or more luminaires and obtaining a first profile associated with a first luminaire of the one or more luminaires. A first target power for a first direct-current (DC) power input of the first luminaire and a second target power for a second DC power input of the first luminaire are calculated based on the target CCT and the first profile so that the first target power and the second target power drive the first luminaire to emit light at the target CCT. A first DC power supply is controlled to deliver the first target power to the first DC power input of the first luminaire and a second DC power supply is controlled to deliver the second target power to the second DC power input of the first luminaire.

Abstract: A correlated color temperature (CCT) of one or more luminaires is controlled by obtaining a target CCT for the one or more luminaires and obtaining a first profile associated with a first luminaire of the one or more luminaires. A first target power for a first direct-current (DC) power input of the first luminaire and a second target power for a second DC power input of the first luminaire are calculated based on the target CCT and the first profile so that the first target power and the second target power drive the first luminaire to emit light at the target CCT. A first DC power supply is controlled to deliver the first target power to the first DC power input of the first luminaire and a second DC power supply is controlled to deliver the second target power to the second DC power input of the first luminaire.

Abstract: A correlated color temperature (CCT) of one or more luminaires is controlled by obtaining a target CCT for the one or more luminaires and obtaining a first profile associated with a first luminaire of the one or more luminaires. A first target power for a first direct-current (DC) power input of the first luminaire and a second target power for a second DC power input of the first luminaire are calculated based on the target CCT and the first profile so that the first target power and the second target power drive the first luminaire to emit light at the target CCT. A first DC power supply is controlled to deliver the first target power to the first DC power input of the first luminaire and a second DC power supply is controlled to deliver the second target power to the second DC power input of the first luminaire.

Abstract: A correlated color temperature (CCT) of one or more luminaires is controlled by obtaining a target CCT for the one or more luminaires and obtaining a first profile associated with a first luminaire of the one or more luminaires. A first target power for a first direct-current (DC) power input of the first luminaire and a second target power for a second DC power input of the first luminaire are calculated based on the target CCT and the first profile so that the first target power and the second target power drive the first luminaire to emit light at the target CCT. A first DC power supply is controlled to deliver the first target power to the first DC power input of the first luminaire and a second DC power supply is controlled to deliver the second target power to the second DC power input of the first luminaire.

Abstract: A correlated color temperature (CCT) of one or more luminaires is controlled by obtaining a target CCT for the one or more luminaires and obtaining a first profile associated with a first luminaire of the one or more luminaires. A first target power for a first direct-current (DC) power input of the first luminaire and a second target power for a second DC power input of the first luminaire are calculated based on the target CCT and the first profile so that the first target power and the second target power drive the first luminaire to emit light at the target CCT. A first DC power supply is controlled to deliver the first target power to the first DC power input of the first luminaire and a second DC power supply is controlled to deliver the second target power to the second DC power input of the first luminaire.