News

Bachelor student Dewwret Sitaldin wins first prize 3-E Royal SMIT BSc prize

Abstract

The main goal of this Electrical Engineering Bachelor project is to build a solar-power system for a quad-copter that will extend its battery life or rather its flight time. The complete system is comprised of a PV system (PV), a micro-controller (MC) and a DC/DC converter (DC) which was mounted onto the drone. On each subsystem, a separate thesis was written and this paper serves as a general yet complete overview of the design process, simulations and test results of a fully functioning solar drone with the theses attached as appendices for reference.

The original (optimistic) aim of an extension of at least 25% of the battery lifetime was set by our supervisors. For the PV part SunPower C60 IBC cells were used (no specific selection was done) together with a (borrowed) custom-built drone (not built by this team, it was borrowed from another research group) as a starting point. After analysing the limitations of the drone and the cells, multiple configurations were designed and a mathematical model that determines power usage, energy costs per solar cell and the optimum amount of cells was developed. A SEPIC converter will extract solar energy from a PV-module in order to charge the battery of the drone. The converter will be controlled by the micro-controller subgroup using MPPT (Maximum Power Point Tracker) algorithm and this will be done by supplying a PWM signal to the converter.

Since the drone was not specifically designed for the project (thus not optimised when it comes to lift capacity and room for cell placement), the efficiency of the solar cells was not sufficient to extend the fight time by 25% (15.1% in summer, 5.6% in winter). Since these bottlenecks can easily be eliminated by replacing the drone and the cells, these results serve as a proof of concept and are an excellent starting point for future research

News

ECTM developing UVC LED test system to study virus disinfection

Read the interview with Tianyi Jin who, together with 3 MSc students, the group of Professor Fouchier of the Erasmus MC, and supported by the TUDelft COVID-19 fund, is developing a platform to test the disinfecting power of UVC LEDs.

Professor Wouter Serdijn appointed as Medical Delta Professor

Wouter Serdijn, chair bio electronics of the department Micro electronics (EEMCS faculty) has been appointed as a Medical Delta Professor for a 5 year period.

Kleine Stromstöße mit heilsamer Wirkung (Eng: Small surges of electricity with a healing effect)

Winzige Chips statt Medikamente – leitet die „Bioelektronik“ eine neue Ära der Medizin ein? Ein Überblick über die neuen Ansätze (Eng: Tiny chips instead of medication - does "bioelectronics" usher in a new era of medicine? An overview of the new approaches). Article by Susanne Donner with, a.o. Vasiliki Giagka in Der Tagespiegel.

How smart sensors can prevent epilepsy

In Delft and Rotterdam, Wouter Serdijn and Christos Strydis are collaborating on a network of sensors and stimulators for the body. By picking up signals and sending the brain a rapid wake-up call, they hope to be able to predict and prevent epileptic fits. ‘If we can close the loop, we’ll have the technology ready within three years.’ Article in Nodes, with Christos Strydis and Wouter Serdijn.

Bachelor student Dewwret Sitaldin wins first prize 3-E Royal SMIT BSc prize

Electrical engineering bachelor student Dewwret Sitaldin, has won the first prize in the national competition for best BSc graduates 2019. Under supervision of dr. ir. J. van Duijsen he worked on the project named' Solar drone; Photovoltaic System & Power management'

Dutch-Japanese astronomical instrument measures 49 shades of far-infrared