Uninterruptible power supply for hvac&r system

A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system, comprising:

• a compressor comprising a bearing;
• a pump configured to supply a flow of pressurized fluid to the bearing;
• a load circuit configured to supply power to the pump;
• and
• an electrical enclosure, comprising:
• a main power supply configured to supply power to the load circuit;
• and
• an uninterruptible power supply (UPS) configured to supply power to the load circuit during non-operation of the main power supply.

A heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system, comprising:

• a compressor comprising a bearing, wherein the compressor is configured to circulate a working fluid through a working fluid circuit;
• a pump configured to supply a flow of pressurized fluid to the bearing;
• and
• a power supply system, comprising:
• a main power supply configured to supply power to the pump;
• and
• an uninterruptible power supply (UPS) configured to supply power to the pump,
• wherein the power supply system is configured to supply power to the pump via the main power supply in a first configuration and to supply power to the pump via the UPS in a secondary configuration, wherein the power supply system is configured to switch from the first configuration to the second configuration in response to an operational interruption of the main power supply.