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Nonlinear control algorithm and system for a single-phase AC-AC converter with bidirectional isolated DC-DC converter
Nonlinear control algorithm and system for a single-phase AC-AC converter with bidirectional isolated DC-DC converter
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机译:具有双向隔离式DC-DC转换器的单相AC-AC转换器的非线性控制算法和系统
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摘要
A control system and hardware with a controllable input relay provides two different modes of operation—uninterruptable power supply (UPS) and mixed energy-AC support. For each operation mode, regulation of the DC-Link and neutral point balancing is guaranteed even for non-linear unsymmetrical AC loads. Moreover, in the mixed energy-AC support mode, unity power factor operation of AC input source, seamless zero current crossing, and very low total harmonic distortion (THD) is provided by the applied non-linear control algorithm. The system has a higher efficiency in comparison to other AC-DC-AC converters with smaller size and weight because of the elimination of the typical balancing circuit.
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