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US 12,009,763 B2Granted
Mode switching for a centrifugal compressor
AssigneeTrane International Inc.
InventorsBenjamin J. Sykora, Petri J. Mäki-Ontto, James W. Ziemer, Matthew A. Shepeck
Life of this patent
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Abstract
The technologies described and recited herein pertain to a permanent magnet motor having multiple voltage taps so that the motor may run in multiple configurations, e.g., a low-range and a high-range, and have multiple optimal operating points.
Claims13
A permanent magnet motor for a heating, ventilation, air conditioning, and refrigeration (HVACR) system, comprising:
- a rotor;
- a stator having voltage taps to variably connect the rotor to either of a low-range voltage path and a high-range voltage path;
- and
- a variable frequency drive (VFD) variably connected to the rotor via either the low-range voltage path or the high-range voltage path,
- wherein the voltage taps connect the stator to the VFD via the low-range voltage path to implement the HVACR system as a heating system.
2 more elements
A permanent magnet motor for a heating, ventilation, air conditioning, and refrigeration (HVACR) system, comprising:
- a rotor;
- a stator having voltage taps to variably connect the rotor to either of a low-range voltage path and a high-range voltage path;
- and
- a variable frequency drive (VFD) variably connected to the rotor via either the low-range voltage path or the high-range voltage path,
- wherein the voltage taps connect the stator to the VFD via the high-range voltage path to implement the HVAC system as a cooling system.
2 more elements
Dependencies are inferred from the claim text.