Photovoltaic test polygon, electromobility laboratory

The photovoltaic test site offers the opportunity to try out various types of roof mounting structures as the basis for a photovoltaic system. After correctly installing two or more modules and connecting them into a string, basic electrical properties of the string, such as open-circuit voltage or short-circuit current, can be measured using multimeters to verify basic functionality. With the use of a special operational measurement device, the voltage-current characteristics can be monitored and measured, including the peak power, and factors such as the impact of shading can be observed, whether it's hard or soft shading.

The second part is prepared for disconnecting DC cable lines for basic fire protection of the facility. It continues with another panel connection section of DC and AC distribution boards, including fuses and protective devices according to Czech, European, or international standards, up to grid or hybrid inverters with batteries. The correct connection is subsequently tested by a fault simulation, and students must correctly identify the cause and node of malfunction. For hybrid inverters, the balance analysis of the internal node - battery and its State of Charge (SOC), the grid, and the photovoltaic source are verified.

The electromobility polygon allows for the design, connection, and verification of the functionality of an AC charging station, including software support, settings, and basic protective and safety devices. Flawless functionality is verified by induced fault states in the connection or by hardware or software controller settings.

Main activities

The photovoltaic test site is included in the teaching of the subject "Design of Photovoltaic Power Plants (XPC-PFV)," which is offered as an elective general subject to students of eight bachelor's programs and seven master's programs at the Faculty of Electrical Engineering and Communication Technology. This subject is also offered as an elective subject to students of other faculties of the Brno University of Technology. Furthermore, students will become acquainted with this test site in subjects focused on alternative and renewable energy sources in the study programs BPC-MET, MPC-EVM, and the program for students participating in Erasmus plus international internships. So far, education and lectures in the field of photovoltaics and electromobility have exclusively focused solely on theory, in some cases on computer simulations, and mostly on narrowly focused experiments.

The electromobility test site will be utilized in the newly prepared subject "Infrastructure for Electric Vehicles." Opening a new classroom will give students in regular or distance learning the opportunity to familiarize themselves with application-oriented possibilities.

  • Practical acquaintance with components of photovoltaic power plants and their roof structures.
  • Verification of theoretical knowledge at the photovoltaic test site.
  • Practical acquaintance with components used for infrastructure in today's electromobility.
  • Verification of theoretical knowledge at the electromobility test site.

Laboratory equipment

  • Photovoltaic test site
  • Training roof structure
  • Mounting elements of a photovoltaic roof system
  • Photovoltaic on-grid inverter
  • Photovoltaic hybrid on-grid inverter
  • AC distribution board
  • DC distribution board
  • Electromobility test site
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