IEE Proceedings - Generation Transmission and Distribution · 2001 · 33 citations · 9 references
EngineeringElectrical EngineeringCircuit TheoryPower ElectronicsSystems ModelingAc-dc ConversionDc-dc ConversionDc-dc ConvertersPower QualitySmall-signal AnalysisTransfer FunctionsDc-ac ConversionFrequency-domain Circuit AnalysisFrequency-domain Circuit ModelingPower Quality In Ac-dc ConversionSix-pulse Converter AnalysisSmall-signal Equivalent Circuit ModelsSmall-signal Frequency ResponseSmall-signal Power Transfer
A small-signal analytic frequency domain model of a 6-pulse HVDC converter is presented. The model consists of a set of explicit algebraic equations which relate the transfer of distortion from AC voltage, DC current and firing angle modulation, to AC current and DC voltage. The equations represent the linearisation of the transfers around a base operating point, and are derived from a piecewise linear description of the AC current and DC voltage waveforms. The model provides an understanding of the transfer of distortion by the converter and is in excellent agreement with time domain simulations.
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