Title :
Medium frequency soft switching DC/DC converter for HVDC transmission system
Author :
Tao Li ; Parsa, Leila
Author_Institution :
Dept. of Electr., Comput. & Syst. Eng., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
An isolated medium frequency zero voltage zero current switching (ZVZCS) DC/DC converter for HVDC transmission system is proposed. Soft switching is achieved over the entire load range, via resonance between transformer leakage inductance and capacitance across primary switches. Since transformer leakage inductance is utilized in the resonant circuit, its design procedure is elaborated as well. Finite element simulation aided iterative design ensures transformer has leakage inductance close enough to desired value. Controller design is completed and the closed-loop system is simulated in PLECS®. Converters series connected at the output are also simulated to show scalability.
Keywords :
DC-DC power convertors; HVDC power transmission; closed loop systems; control system synthesis; finite element analysis; iterative methods; power transformers; power transmission control; zero current switching; zero voltage switching; HVDC transmission system; PLECS; closed-loop system; controller design; design procedure; finite element simulation aided iterative design; isolated medium frequency zero voltage zero current switching DC-DC converter; load range; medium frequency soft switching DC-DC converter; primary switches; resonant circuit; transformer leakage capacitance; transformer leakage inductance; Inductance; Inductors; Magnetic resonance; RLC circuits; Soft switching; Zero current switching; Zero voltage switching; DC-DC power converters; HVDC transmission; Zero current switching; Zero voltage switching;
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
DOI :
10.1109/IECON.2014.7048716
