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Partial shading brings many serious problems in the solar photovoltaic system (SPV) such as the significant reduction in power harvest, hot spots, and the emergence of the multiple maximum power points (MPPs). This paper presents a bidirectional flyback converter (BFC) based isolated-port differential power processing (DPP) architecture at the submodule level. Bidirectional flyback converters (BFCs)...
This paper proposed a novel PV faults diagnosis method, which is based on the structure of differential power processing (DPP). Since the conventional PV faults diagnosis methods are very easily affected by the working environment conditions, such as solar irradiance and temperature. Compared to the conventional methods, this method is able to diagnose several PV modules at the same time. Furthermore,...
Differential power processing (DPP) is a promising architecture to solve an issue caused by mismatch among PV modules. PV to non-isolated port bus (or PV to the virtual bus) is one of the topologies studied in DPP architecture that allows each DPP converters can achieve maximum power point tracking (MPPT) independently. The string current value does not have an effect on MPPT but relates to the power...
This paper presents an inductively coupled power transfer (ICPT) system that can transfer energy with high efficient from primary side to secondary side with variable load from 50 to 300 Ω via electromagnetic resonant coupling and output stable voltage. Main reasons for low efficiency for wide frequency deviation have been investigated. Typical compensation structures are compared in terms of efficiency,...
Differential power processing (DPP) structure present obvious advantages in improving the energy output and overall efficiency of a photovoltaic system under the partial shading conditions. This paper presents a novel minimum-power tracking (MPT) algorithm for the two-stage PV-PV DPP structure, where each PV is implemented with the maximum power point tracking (MPPT) control while the central control...
This paper presents the differential power processing (DPP) with isolated-port of submodule integrated converters (subMICs) in order to improve energy capture in photovoltaic (PV) power system. The nearly voltage equalization control and flyback subMICs are selected, which are working in discontinuous conduction mode (DCM) with fixed duty ratio 0.5. The simulation is built on Matlab/Simulink. The...
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