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.
Control and limitation of harmonic current emission from new customer installations is essential for maintaining supply voltage distortions below the prescribed compatibility or planning levels, and is also required for ensuring electromagnetic compatibility. At the planning stage, emissions of low-order harmonic current are evaluated based on several assumptions and simplifications related to, e...
A wide range of modern low voltage power electronic (PE) devices feature sophisticated controls, which aim to improve device performance and ensure better regulation of grid-side ac currents. The implementation of these controls is expected to result in increased device efficiency, improved controllability, higher operating power factors and reduced harmonic emissions. The interactions of individual...
The number of fully electric cars is expected to increase significantly in the near future in many countries. They are commonly known as electric vehicles (EVs) and use power electronic-based rectifiers for charging their batteries. These circuits may significantly impact power quality in LV and MV distribution grids, in particular the distortion at frequencies below 2 kHz (harmonics) and above 2...
Harmonic levels and their propagation in the power system are mainly determined by the network harmonic impedance. It is also an essential parameter for the calculation of harmonic current emission limits. Different methods for measuring the network harmonic impedance have been developed in the last decades, but all of them assume that the impedance is constant within a cycle at fundamental frequency,...
Some case studies on PV systems are reported with reference to harmonic distortion, unbalance and their effects on protection systems. The experiences are related to: i) laboratory experiments made on commercial LV inverters aimed to study their harmonic impact; ii) harmonics produced by an existing PV plant both at lower and higher frequencies; iii) voltage unbalances caused by high penetration of...
A web-based platform for exchanging harmonic emission measurements have been implemented to improve and support the research in this field. In this database measurements are available of all types of household appliances and office equipment from different laboratories around the world. With this information it is possible to perform diverse analysis and comparisons. As an example, the behavior of...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.