Abstract
The study of different unidirectional input parallel output series connected <scp>DC‐DC</scp> converters for wind farm based <scp>multi‐connected DC</scp> system
Highlights
In recent decades, offshore wind power has developed rapidly ever since the first offshore wind farm was commissioned in Denmark in 1991.1 Offshore wind farms can generate large amounts of energy, but far away from the onshore consumption centres
Taking the core material of high-power transformers into consideration, the switching frequency of the single active bridge (SAB) converter in this Input Parallel Output Series (IPOS) structure is set to be 2 kHz, which is the same as that for the multi-connected 5 MW SAB converter in Figure 1.20-23 In the real world, a 5 kV input 5 MW SAB converter is a reasonable choice for the Input Series Input Parallel Output Series (ISIPOS) converter
The input voltage value of the uncontrollable Three-Phase Bridge IPOS converter increases with the increase of the output voltage, while that of the controllable converters returns to 5 kV after a few tens of seconds
Summary
Offshore wind power has developed rapidly ever since the first offshore wind farm was commissioned in Denmark in 1991.1 Offshore wind farms can generate large amounts of energy, but far away from the onshore consumption centres. The design method[17] and simulation study of both the SAB converter with primary side inductor and the ThreePhase Bridge DC-DC converter under high-power high-voltage conditions have been presented in detail in Reference 14, as well as their downscaled hardware testing.
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