Sub-modular MPPT for Decentralised Grid Feed-in Under Fast Changing Irradiation Applications

Conference on Ph.D. Research in Microelectronics and Electronics, pp. 361–364

Abstract

A system for decentralised grid feed-in of solar submodules is presented. The system makes use of monolithically integrated sub-modular maximum power point tracking, boosting the output voltage to 30V. Multiple sub-modules of different topologies and insolation can thereby be combined to feed into one DC-DC converter, each in turn feeding into a 350V HV DC grid. This allows for novel applications, such as noise barriers or facades, reducing losses associated to traffic or pollution induced partial shading. Measurements show increased power extraction throughout partial shading events. Energy gain is highly dependent on shading frequency, length and affected module area. Sub-modular peak throughput lies at 140W, while grid feed-in is limited to 600W per converter.

Authors 5

1. Léon Weihs Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Kopernikusstr. 16,Integrated Analog Circuits and RF Systems,Aachen,Germany,D-52074

2. Jonas Zoche Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Kopernikusstr. 16,Integrated Analog Circuits and RF Systems,Aachen,Germany,D-52074

3. Jan Grobe Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Kopernikusstr. 16,Integrated Analog Circuits and RF Systems,Aachen,Germany,D-52074

4. Ralf Wunderlich Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Kopernikusstr. 16,Integrated Analog Circuits and RF Systems,Aachen,Germany,D-52074

5. Stefan J. Heinen Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Kopernikusstr. 16,Integrated Analog Circuits and RF Systems,Aachen,Germany,D-52074