2007 · 11 citations · 1 references
EngineeringElectrical EngineeringNuclear EngineeringInstrumentationParticle PhysicsPower ElectronicsAccelerator PhysicsCurrent Measurement InstrumentsCurrent-voltage CharacteristicsDc-dc ConversionDc-dc ConvertersDevice CharacterizationCurrent Measurement AccuracyCurrent-voltage CharacterizationPower Coefficient AnalysisPrecision MeasurementResistorsTransducersVoltage
The DC current transducer (DCCT) and accompanying A/D converter determine the precision of a power converter in accelerator operation. In the LHC context this precision approaches 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-6</sup> (1 ppm). Inside the DCCT a burden resistor is used to convert the current to an output voltage. The performance of this resistor is crucial for the accuracy, temperature behaviour, settling time and long- term drift of the DCCT. This paper reports on evaluations, a new parameter called "power coefficient" (PC) and test results from some different types of resistors available on the market.
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A novel current calibration system up to 20 ka
G. Fernqvist, Björn Halvarsson, J. Pett et al. · IEEE Transactions on Instrumentation and Measurement · 2003 · 21 citations · Full text