A Monopolar Symmetrical Hybrid Cascaded DC/DC Converter for HVDC Interconnections

Step up dcdc converter pdf

Cascaded Boost Converter for PV Applications

Among renewable energy sources, solar power has the potential to become one of the main contributors to the future electricity supply. Low voltage photovoltaic systems require a high voltage gain converter for module’s grid connection through a DC-AC inverter. This paper proposes a converter that achieves a high step-up voltage conversion ratio, which contains a coupled inductor, without extrem...

DC Fault Ride-through Capability and STATCOM Operation of a HVDC Hybrid Voltage Source Converter

HVDC transmission systems are becoming increasingly popular when compared to conventional AC transmission methods. HVDC voltage source converters (VSC) can offer advantages over traditional HVDC current source converter topologies; as such, it is expected that HVDC-VSCs will be further exploited with the growth of HVDC transmission. This paper presents the DC fault ride through capability and n...

Optimal Structure of a Cascaded Multilevel Converter

In this paper, a topology for cascaded multilevel converter based on multilevel modules and full-bridge converters is proposed. The proposed topology significantly reduces the number of dc voltage sources, IGBTs, and power diodes as the number of output voltage levels increases. Also, an algorithm to determine dc voltage sources magnitude is proposed to synthesize maximum levels at the output v...

Linearization of Cascaded Buck Converter

The present work deals with the modeling and the stability analysis of the cascaded converters. When a converter tightly regulates its output, it behaves as a constant power load (CPL). The problem of CPLs is that they show negative incremental resistance that causes instability in the system because the control to output transfer function possessed a RHP pole. Hence the CPL has been modeled an...