Abstract:
Disclosed is a method and apparatus for providing metering information that may provide a security for personal information. A metering information providing method collects metering information about a variety of energy, such as electricity, gas, heating, cooling, and hot water of an apartment house, provides the collected metering information to a utility provider and an energy information provider, and provides a systematic security function of personal information required to operate a new business model.
Abstract:
An uninterruptible power supply apparatus and method. The uninterruptible power supply apparatus includes a first generator, an energy storage, a first power converter connected to the energy storage, a second power converter connected to the energy storage, a first switch connected to the first power converter and a first load, a second switch connected to the second power converter, the first generator and a second load, and a third switch connected to a power grid, the first generator, the second power converter, the first switch and the second switch. In a normal state in which the first switch and the third switch are connected, the power grid supplies power to the first load or the second load. In an independent operating state in which the third switch is turned off, the first generator or the energy storage uninterruptibly supplies power to the first load or the second load.
Abstract:
Power line communication apparatuses, which are serially connected with power line. The power line communication apparatus may include a bypass unit to be serially connected to power line, and pass a communication signal that flows along the power line; a coupling circuit to be connected to two ends of the bypass unit, and couple the communication signal to the power line; an analog front end (AFE) unit to transform an input/output analog signal so that the input/output analog signal is transferred to the power line, and transfer the input/output analog signal to the coupling circuit unit; and a controller to transfer the communication signal, which is to be transferred through the power line to the AFE unit.