IEEE Transactions on Power Electronics · 1987 · 19 citations · 2 references
EngineeringElectrical EngineeringCircuit TheoryEnergy SystemsPower ElectronicsAc-dc ConversionAc-dc ConvertersDc-dc ConvertersPower QualityPulse-width ModulationThree-phase CircuitsAc-dc RectifiersCurrentsDiode RectifiersElectric LocomotivesEquivalent Series InductanceHarmonic ReductionReactive Power CompensationReactive Power Control
Conventional AC‑DC converters generate significant harmonic currents and consume reactive power, and three‑phase equivalents are less relevant for this study. The study targets single‑phase high‑power electric locomotives. A diode rectifier in series with a PWM‑controlled chopper, preceded by a series inductance and shunt capacitor, is used to mitigate harmonic currents and reactive power.
Conventional ac-dc converters present two important disadvantages: they create harmonic currents and require reactive power. To reduce these drawbacks, a diode rectifier is directly connected in series with a chopper controlled by pulsewidth modulation. Both are preceded by a series inductance (added to the equivalent one of the power system) and a shunt capacitor. This study is applied to single-phase powerful electric locomotives. Equivalent three-phase systems are not so interesting.
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