POWER TRANSFORMATION SYSTEM WITH CHARACTERIZATION

摘要

A power transformation system having a power stealing mode for powering a device indirectly through an electrical load connected to a power source and also has a characterization mode. The transfer of energy from the power source via the load may go undetected. The system may store energy from the load in an ultra or super capacitor. This energy may be used to power Wi-Fi and various thermostat applications, among other things, associated with HVAC and building automation and management systems. Energy from the load may be supplemented or substituted with energy from a battery and/or a buck converter. In the characterization mode, the system may obtain data relative to power usage of a load and determine a profile to identify one or more components and their operating conditions.

主权项

1. A power transformation module of a thermostat, comprising:
a power harvesting mode; and a characterization mode; and wherein: the power harvesting mode comprises:
pulling electrical power from a line carrying power for a load related to a thermostatic system; andstoring the electrical power from the line available for use by the thermostatic system; and the characterization mode comprises:
providing an electrical power to the load;measuring a waveform of the electrical power to the load in terms of magnitude and time to obtain a profile of the waveform;obtaining a signature from the profile of the waveform to identify one or more components of the load; anddetermining a condition of the one or more components from the signature.