Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Corona discharge appears near the HVDC lines when the surface electric field strength of the line is higher than the corona incept field. Ion flow will be formed under the affection electric field near conductors. Ion flow is a non-equilibrium plasma at low temperature, they are distributed among lines and the earth. Measurements of the DC synthetic electric field is important for the evaluation of...
The Electromagnetic Compatibility (EMC) is a major issue for the truck crane designing, due to the large dimension. The conducted disturbance sources of truck crane was measured under stable conditions, the time domain characteristics of possible conducted disturbance sources was analyzed, and typical waveforms were concluded to solve the EMC (Electromagnetic Compatibility) issue. The electromagnetic...
Load effect of our developed reverberation chamber is investigated at calibration stage. The influence of receiving antenna, transmit antenna and EUT is analyzed and evaluated according to the measurement data. Load effect calibrations with different receiving antenna positions, transmit antenna positions, and EUT positions are measured carefully. It is indicated that transmit antenna positions, and...
Transient processes are generated by operations of disconnect switches and circuit breakers in the AC side of converter stations. Several trips in different plusmn500-kV HVDC converter stations in china happened recently. Characteristics of transient Electromagnetic Interference due to switching operations are summarized based on onsite tests in a practical converter station. Measurements are performed...
In order to meet the demands of lightning impulse electric field measurements in power system EMC, the design of an electro-optic integrated sensor is presented in this paper. The disadvantage of the Mach-Zehnder structure of the sensor is analyzed, and a novel structure is proposed to solve the problem. The sensor system is established and the calibration of the sensor is carried out. A maximum linear...
This paper analyzed the distribution and the characteristic of the disturbances in the driving system of a fuel cell bus by measuring both the conductive and radiative emission. Statistical method was used to investigate the parameters of the typical voltage waveforms, which were compared with the standard ones in IS07637-2. The results are useful for the farther investigation of the EMC problems...
The electro-optical modulator based on Pockels effect implements the transition from electrical signal to optical signal. This makes using optical fiber in EMC measurements come true. This paper describes the principle of modulators based on Pockels effect, designs the modulator with high precision, calculates the electric field in the modulator, discusses the parameters of the modulator, and gives...
Reverberation chambers are used widely for EMC testing in industry. The design of the mechanical stirrer should be considered artistically. This paper introduces a split stirrer design, the simulation result shows the good performance of this stirrer and a prototype chamber is built according to the simulation. The critical parameters of the reverberation chamber are analyzed in detail. Four calibrations...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.