Grid-connected photovoltaic power system Solar energy gathered by photovoltaic solar panels, intended for delivery to a power grid, must be conditioned, or processed for use, by a grid-connected inverter. Fundamentally, an inverter changes the DC input voltage from the PV to AC voltage for the grid. This inverter sits between the solar array and the grid, draws energy from each, and may be a large stand-alone unit or may be a collection of small inverters, each physically attached to individual solar panels. See AC Module. The inverter must monitor grid voltage, waveform, and frequency. One reason for monitoring is if the grid is dead
Rassvet (ISS module) Rassvet (ISS module) Rassvet (; lit. "dawn"), also known as the Mini-Research Module 1 (MRM-1) (, ) and formerly known as the Docking Cargo Module (DCM), is a component of the International Space Station (ISS). The module's design is similar to the Mir Docking Module launched on STS-74 in 1995. "Rassvet" is primarily used for cargo storage and as a docking port for visiting spacecraft. It was flown to the ISS aboard on the STS-132 mission on May 14, 2010, and was connected to the ISS on May 18. The hatch connecting "Rassvet" with the ISS was first opened on