Abstract:
According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS coupled in parallel to provide output power to a load from a power source, each of the first UPS and the second UPS having an inverter and having a bypass switch, with each UPS configured to operate in one of an inverter mode in which output power is derived from the power source through the inverter, and a bypass mode in which output power is derived from the power source bypassing the inverter, the method comprising powering on the first UPS and the second UPS in the inverter mode of operation, designating one of the first UPS and the second UPS as a master UPS, and controlling the bypass switch of the first UPS and the bypass switch of the second UPS using the master UPS.
Abstract:
According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS, the method comprising powering on the first UPS, detecting a first signal at a first I/O of the first UPS using a first detection circuit of the first UPS, detecting a second signal at a second I/O of the first UPS using a second detection circuit of the first UPS, based on a status of the first signal and a status of the second signal, configuring the first UPS to operate in one of a master mode of operation and a controlled mode of operation.
Abstract:
According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS coupled in parallel to provide output power to a load from a power source, each of the first UPS and the second UPS having an inverter and having a bypass switch, with each UPS configured to operate in one of an inverter mode in which output power is derived from the power source through the inverter, and a bypass mode in which output power is derived from the power source bypassing the inverter, the method comprising powering on the first UPS and the second UPS in the inverter mode of operation, designating one of the first UPS and the second UPS as a master UPS, and controlling the bypass switch of the first UPS and the bypass switch of the second UPS using the master UPS.
Abstract:
According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS, the method comprising coupling at least one control line between the first UPS and the second UPS to operate the first UPS and the second UPS in a parallel mode of operation, providing output power from each of the first UPS and the second UPS to a load, detecting a fault condition in the UPS system, decoupling the at least one control line, operating the first UPS in a diagnostic mode of operation, and determining if the fault condition is associated with the first UPS.
Abstract:
According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS, the method comprising coupling at least one control line between the first UPS and the second UPS to operate the first UPS and the second UPS in a parallel mode of operation, providing output power from each of the first UPS and the second UPS to a load, detecting a fault condition in the UPS system, decoupling the at least one control line, operating the first UPS in a diagnostic mode of operation, and determining if the fault condition is associated with the first UPS.
Abstract:
An uninterruptible power supply (UPS) having an adjustable battery charger that generates a charger current, and a controller, coupled to the adjustable battery charger, that receives a signal representative of a system constraint and provides a reference, based on the signal, to the adjustable battery charger to control an amplitude of the charger current supplied by the adjustable battery charger based on the system constraint. The system constraint may include, for example, a maximum input current to the UPS, maximum charging current of the battery cell, and maximum and/or minimum charger current values.
Abstract:
According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS, the method comprising powering on the first UPS, detecting a first signal at a first I/O of the first UPS using a first detection circuit of the first UPS, detecting a second signal at a second I/O of the first UPS using a second detection circuit of the first UPS, based on a status of the first signal and a status of the second signal, configuring the first UPS to operate in one of a master mode of operation and a controlled mode of operation.
Abstract:
An uninterruptible power supply (“UPS”) includes an input module having a plurality of inputs, and at least one jumper element configured to selectively couple at least one input of the plurality of inputs to at least one other input of the plurality of inputs. The plurality of inputs and the at least one jumper element may be constructed and arranged to selectively achieve the following configurations: single power feed, single phase input and single phase output; dual power feed, single phase input and single phase output; single power feed, three phase input and single phase output; dual power feed, three phase input and single phase output; single power feed, three phase input and three phase output; and dual power feed, three phase input and three phase output. Other embodiments and methods of selectively achieving multiple power configurations are also disclosed.
Abstract:
According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS, the method comprising powering on the first UPS, receiving power from a first input power source coupled to an input of the first UPS, providing power to a load coupled to an output of the first UPS, adjusting the power provided to the load by the first UPS in response to power characteristics of the first UPS and power characteristics of the second UPS.
Abstract:
According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS, the method comprising powering on the first UPS, receiving power from a first input power source coupled to an input of the first UPS, providing power to a load coupled to an output of the first UPS, adjusting the power provided to the load by the first UPS in response to power characteristics of the first UPS and power characteristics of the second UPS.