Multilevel power converter or inverter arrangement using h bridges
A power converter, multi-level technology, applied in the direction of output power conversion device, irreversible AC power input conversion to DC power output, irreversible DC power input conversion to AC power output, etc., can solve the total harmonic Distortion can not meet the optimal requirements and other issues
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[0023] figure 1 A device with m stages connected in parallel for power generation and power conversion is shown, where m is a natural number. In many applications, large amounts of generated power need to be handled. Non-limiting examples include direct drive applications, where the wind turbine shaft transmits power directly from the rotor to the electrical power converter. To handle large-scale power, multiple electrical converters are arranged in parallel. Each of the m stages is responsible for handling a portion of the total power so as not to exceed their normal ratings, especially those associated with semiconductor switches, to avoid component damage.
[0024] The generator (gen) is preferably a wind turbine. The stator windings from the converter are connected to a second voltage source converter (VSC2), which is constructed as a multilevel H-bridge. A grid filter can be placed at the output of the stator windings to limit dv / dt, which is known as the larger value...
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