This paper introduces a digitally performed current mode and voltage control for the dc-dc step down converter based on voltage to frequency converter where the average values of inductor current and output voltage are obtained. These current and voltage measurement are realized by the voltage control oscillator (VCO) and counters (digital integrator). Such an approach enables full digitalizati...

This paper describes the design, evaluation, and implementation of a compensation scheme for a measurement voltage transformer (VT) using the hysteresis characteristics of the core. The error of a VT is caused by the primary winding voltage and secondary winding voltage. The latter depends on the secondary current, whereas the former depends on the primary current, which is an aggregate of the ...

For developing and testing of power electronic converters and circuits, voltages and currents have to be measured to verify the proper mode of operation. In cascaded converters or multi-level topologies, the voltages to be measured contain common mode components up to several kV with transients up to several tens of kV/μs. Conventional isolated voltage measurement systems do either not meet the...

Realizing stable and reliable monitoring of a distribution network voltage environment can obtain real-time power parameter information ensure the normal safe operation transmission lines, which is great research significance engineering value. Based on distributed capacitance relationship between sensor line, an equivalent circuit dividing model proposed, relevant factors affecting stability r...

Measurements of medium and high voltages in a power grid are normally performed with large bulky voltage transformers or capacitive dividers. Besides installation problems, these devices operate relatively narrow frequency band, which limits their usability modern systems that saturated electronic devices. A sensor can be installed directly on wire without galvanic connection to the ground may ...

In order to determine the Coulomb logarithm independently from the charge state, we need energy-loss measurement of protons (zeff = 1) with the same velocity as heavier projectiles. Such a measurement has already been performed using 350 keV protons delivered from the tandem accelerator by means of TOF method with a pulsed beam [4]. The terminal voltage of the accelerator was (350-20)/2 = 165 k...