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Analiza wybranych zagadnień równoległej pracy dwóch układów przesyłowych prądu stałego (HVDC) o odmiennych technologiach, tj. układu tyrystorowego (LCC – Line Commutated Converter) i tranzystorowego (VSC – Voltage Source Converter) jest przedmiotem niniejszego referatu. Pokazano, że równoległa praca układów jest możliwa w warunkach niskiej mocy zwarciowej tam, gdzie sam układ LCC o równoważnej mocy...
In this paper, a novel direct-drive wind generation system based on three-phase Z-source inverter is presented. Mathematical model of three-phase Z-source inverter is proposed by combining the traditional PWM rectifier model and equivalent model of the z-network. How variational shoot-through duty ratio affect the system is analyzed. The control method of acquiring stable Z-network capacitor voltage...
For most of the peak power extraction methods in wind turbine generation system described in the current literature, it is necessary to know the wind turbine's maximum power curve and the wind speed measurement. These methods used the maximum power curve obtained via simulations or tests for individual wind turbines. This makes these methods difficult and expensive to implement in practice. In addition,...
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