Digital Current Mode Control Algorithms for High-Power Half-Bridge DC/DC Converters
نویسندگان
چکیده
Digitally controlled systems have many well known advantages in comparison to analogue systems e.g. programmability, higher flexibility and modularity, fewer components, lower sensitivity to noise and environment conditions. Theoretically, all analogue control algorithms can be digitalized. But from practical point of view the digitalization often ends up with some major difficulties, which will noticeable limit or even prevent the application of the digital control algorithm. In this paper some of the problems connected to the digitalization are discussed and solutions are proposed. As a result, two new digital current mode control algorithms for high-power, high-voltage half-bridge DC/DC converters are proposed, simulated and experimentally verified. Streszczenie. Cyfrowe systemy sterowania posiadają liczne znane zalety w porównaniu z systemami analogowymi, np. programowalność, wyższą elastyczność funkcjonalną i modułowość budowy, mniejszą liczba komponentów oraz wrażliwość na warunki otoczenia. Teoretycznie wszystkie algorytmy analogowe można zdigitalizować, lecz z praktycznego punktu widzenia często wiąże się to z istotnymi trudnościami, ograniczającymi lub nawet uniemożliwiającymi stosowanie algorytmu cyfrowego. W artykule omówiono niektóre problemy związane z digitalizacją oraz przedstawiono sposoby ich rozwiązania. Zaproponowano dwa nowe cyfrowe algorytmy sterowania wysokonapięciową półmostkową przetwornicą DC/DC, zweryfikowane symulacyjnie i eksperymentalnie. (Cyfrowe algorytmy sterowania półmostkowych przetwornic DC / DC dużej mocy ze sprzężeniem prądowym).
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تاریخ انتشار 2011