Analysis, modeling, control and operation of an interleaved three-port boost converter for DMPPT systems including PV and storage at module level

Abstract

This paper presents the analysis, control and implementation of the interleaved three-port boost converter. The scope of this paper is the interfacing of photovoltaic systems that include storage. A new symmetrical PWM modulation strategy that prevents unwanted switching states without requiring external circuitry is presented. This modulation allows for proper sampling of the measurements, increasing thus their accuracy. Large- and small-signal models of the interleaved and non-interleaved three port boost converters are presented and transfer functions are derived for control design purposes. The different currents in the converter are controlled using control loops that govern the behavior of the converter. These loops are intuitively designed by treating them independently. With the proper loop bandwidth selection, the converter achieves fast response and good reference tracking and is suitable to interface photovoltaic and storage systems with different kinds of loads. The presented models, modulation and control loops are validated through simulation and with experimental results.

Comparative analysis on selection and synthesis of multiple input converters: a review

“…5 c . Further, MIC structures employing multiple basic and hybrid PSCs based on the connection rules discussed above reported in [23, 26, 29, 40, 45, 53]. These hybrid structures are well suited for bidirectional power flow between the sources and sources/loads.…”

“…In these structures, the energy sources are parallel to the sources during charging, and further, all the sources can simultaneously or independently supply power to the load. These structures possess the bidirectional power flow only for the ESS [23, 32, 34, 39–44, 49, 50, 53, 56, 64, 65, 98].…”

“…Another promising application of MIC is photovoltaic applications. In PV systems, MICs are well suited as a solution for partial shading [11, 32, 40, 45]. Similarly, laptop power architectures consist of multiple bus voltages, which require multiple port energy transfer [103, 104].…”

“…For instance, state-of-the-art emphasising the topology has been presented in [12][13][14][15][16][17][18][19][20][21][22][23][24], whereas, state-of-the-art discussed in [25][26][27][28][29][30][31][32][33][34][35][36] emphasises on the MIC for hybrid energy systems applications. Further, MIC for PV applications has been reported in [11,[37][38][39][40][41][42][43][44][45] and MIC for hybrid vehicles has been discussed in [33,35,[45][46][47][48][49][50]. The researchers evolved and are still evolving newer topologies with an application-oriented approach.…”

Photovoltaic module cascaded converters for distributed maximum power point tracking: a review

“…The integration of batteries for output voltage balancing suffers from several clear drawbacks similar to those discussed for [67] in the previous paragraph. Dynamic analysis and control implementation for the battery-integrated interleaved TPC is presented in [105].…”