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US 8,299,646 B2Granted
HVAC/R system with variable frequency drive (VFD) power supply for multiple motors
AssigneeRocky Research
InventorsUwe Rockenfeller, Paul Sarkisian, Kaveh Khalili, Warren Harhay
Life of this patent
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Abstract
An HVAC/R system is configured with a variable frequency drive power supply which provides power to each of a compressor, a condenser fan, and a blower. In some embodiments, the compressor has a three-phase motor and the condenser fan has a single-phase motor.
Claims9
An electronic system, comprising:
- a first power supply configured to output three-phase AC power at variable frequencies;
- a first three-phase AC motor electrically connected to the first power supply;
- a phase change module electrically connected to the first power supply and configured to receive three-phase AC power from the first power supply and output single-phase AC power;
- a first single-phase AC motor electrically connected to the phase change module and configured to receive single-phase AC power from the phase change module;
- and
- a control module electrically connected to the first power supply and configured to provide control signals to the first power supply for controlling the speed of the first three-phase AC motor and the first single-phase AC motor.
3 more elements
Dependencies are inferred from the claim text.