Grid shield
AssigneeCarrier Corporation
InventorFlorian Beaufrere
Life of this patent
Estimating the term…
Abstract
A grid-shielded electrical system for a transportation refrigeration system is provided. The grid-shielded electrical system includes a bus to deliver three-phase grid power, which is received from a grid, to electrical components of the transportation refrigeration system, a voltage sensor disposed to sense a condition of voltage on the bus and configured to generate voltage readings accordingly and a controller disposed in signal communication with the voltage sensor and configured to detect a root cause issue with the grid based on the voltage readings.
Claims17
A grid-shielded electrical system for a transportation refrigeration system, the grid-shielded electrical system comprising:
- a bus to deliver three-phase grid power, which is received from a grid, to electrical components of the transportation refrigeration system;
- a voltage sensor disposed to sense a condition of voltage on the bus and configured to generate voltage readings accordingly;
- and
- a controller disposed in signal communication with the voltage sensor and configured to detect a root cause issue with the grid based on the voltage readings.
A transportation refrigeration unit for a shipping container, the shipping container configured to be transported by a ship, the transportation refrigeration unit comprising:
- a grid-shielded electrical system, the grid-shielded electrical system comprising:
- a bus to deliver three-phase grid power, which is received from a grid of the ship, to electrical components of the transportation refrigeration system;
- a voltage sensor disposed to sense a condition of voltage delivered to the bus and configured to generate voltage readings accordingly;
- and
- a controller disposed in signal communication with the voltage sensor and configured to detect a root cause issue with the grid based on the voltage readings,
- wherein the transportation refrigeration unit is operable in a standby mode while on board the transport ship and connected to the grid, the grid exclusively powering the electrical components in the stand-by mode.
A method of operating a transportation refrigeration system comprising a grid-shielded electrical system, the method comprising:
- delivering three-phase grid power, which is received from a grid, to electrical components of the transportation refrigeration system via a three-phase bus;
- sensing, with a voltage sensor, a condition of voltage on each phase of the three-phase bus and generating voltage readings accordingly;
- and
- detecting, with a controller, a root cause issue with the grid based on the voltage readings.
Dependencies are inferred from the claim text.