6th World Congress on Industrial Process Tomography Stray Capacitance Compensation for Non – Stray immune ECT systems
نویسندگان
چکیده
This paper presents a new stray capacitance compensation method for non stray immune capacitance measurement circuits. The proposed stray capacitance compensation method allows ECT systems to use all known capacitance measurement methods. Based on this method compact size ECT hardware can be built and can work powered by battery because of small power consumption. The investigation and experimental results of stray capacitance compensation for non-stray immune systems are presented. Prototype of a compact size, low power and low price ECT hardware is presented. This new system has a potential benefit for on-site investigation.
منابع مشابه
Design and Construction of a Sensitive Capasitive Sensor System (RESEARCH NOTE)
Design and construction of a capacitor sensor with a precise readout system are described in this paper. A variable air-gap capacitive transducer was constructed and for signalmeasurement a successful attempt was made to exploit the capacitance changes in terms of the phase angle of the detected signal. The reported setup makes it possible to detect capacitance changes of the order of 2.5 fF in...
متن کاملGreatly Improved Small Inductance Measurement Using Quartz Crystal Parasitic Capacitance Compensation
Generally, quartz crystal inductance frequency pulling in oscillators is very low and therefore is not often used in practice. The new method of improving frequency pullability uses inductance to compensate for quartz stray capacitances. To this end, a special AT fundamental quartz crystal working near the antiresonance frequency is selected. By modifying its equivalent circuit with load induct...
متن کاملSensitivity Analysis and Stray Capacitance of Helical Flux Compression Generator with Multi Layer Filamentary Conductor in Rectangular Cross-Section
This paper presents an approach to calculate the equivalent stray capacitance (SC) of n-turn of the helical flux compression generator (HFCG) coil with multi layer conductor wire filaments (MLCWF) in the form of rectangular cross-section. This approach is based on vespiary regular hexagonal (VRH) model. In this method, wire filaments of the generator coil are separated into many very small simi...
متن کاملEffects of Stray Capacitance to Ground in Bipolar Water Impedance Measurements Based on Capacitive Electrodes
Liquid impedance measurements based on capacitive (or contactless) electrodes overcome electrode polarization problems but are affected by stray capacitance from the material being measured to ground, the same as measurements with direct-contact electrodes. This study shows that the effects of that capacitance depend on the impedance being measured and for bipolar impedance measurements they ...
متن کاملThe Impact of DC-power Layout on Stray Inductance of Bridge Arm in Power Converters
In high power converter design, low-inductance busbar connecting DC capacitors and power devices is the main concern to improve the quality of the whole power electronics system. There are several facts which affect the stray inductance of bridge arm. This paper mainly analyzes the influence of DC-power layout on the stray inductance taking a subway traction converter as example. The Psim9.0 so...
متن کامل