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
Historical Advanced Squad Leader module includes rules for Pine Woods, Slope hexsides, and barbed wire fences, as well as modifications of existing rules for stream-hex terrain, village terrain, hillside walls and hedges, and known minefields. One mapsheet, for terrain surrounding Stoumont, Belgium, is included as well as 1 campaign game ("Clash at Stoumont", 19 – 21 December 1944) and 4 standalone scenarios. Scenarios KGP1-KGP4. Prerequisites included the ASL Rulebook and Beyond Valor and Yanks. Kampfgruppe Peiper II (1995) is the second half of the Kampfgruppe Peiper module (commonly abbreviated as KGP II). Acting as a companion to the KGP I module, it depicts the fighting