General Information - Siemens SINAMICS S120 System Manual

General information

To assess the inverter system required, the following distinction can be made between the
types of power generation:
● Power generation with rotating machines
● Power generation without rotating machines
In particular, the amount of power generated depends largely on fluctuating ambient
conditions, such as wind speed or exposure to sunlight. For energy storage applications, an
additional dependency is the charge state of the storage source. When a generator is
directly operated on the grid, the amplitude and frequency of the generated voltage vary
accordingly, and decoupling of the producer and consumer grid is required. This task is
handled using state-of-the-art power electronics.
Both in power technologies based on fossil fuels, or nuclear energy as well as regenerative
energies with solar thermal, wind, water or biomass, generators are normally used to convert
the kinetic energy into electrical energy and supply it to the consumers via power grids.
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②
③
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Figure 2-1
Grid infeed
System Manual, 04/2015, A5E03347436A
Power generation
Conversion into electrical energy
Conversion into DC voltage
DC link
Conversion into AC voltage with output filter
Transformer to connect to the grid
Power grid
Energy flow for power generation with rotating machines
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