I-V Characteristics Measuring System for PV Generator based on PDM Inverter


  • A. Sandali Author
  • A. Cheriti Author




PV generator, PDM inverter, I-V curve tracer, DC inductor emulator


This paper presents a new method to characterize photovoltaic panels. The power electronic converter used is a Pulse Density Modulation (PDM) inverter. In this method, the inverter plays two roles: First, it is a DC inductor emulator. Second, it allows assembly between inductive and capacitive load methods. The PDM inverter is adapted to operate at very high switching frequency. In this application, it avoids the difficulties of making DC inductors with high DC current and its control remains very simple. This is an asset for increasing the power, power density and rapidity of tracers based on this method. The main disadvantage of this method, compared to methods based on DC-DC converter, is the use of twice as many semiconductor components. But this disadvantage can be compensated by a gain on reactive components. The simulations and experimental results of the proposed system are shown.

Author Biographies

  • A. Sandali

    Department of Electrical Engineering

    ENSEM., Hassan II Casablanca University

    Boulevard Abdellah Ibrahim (Ex. Route d'El Jadida), 20200 Casablanca (Morocco)

    Phone/Fax number:+00212 522 230789

  • A. Cheriti

    Department of Electrical and Computer Engineering Université du Québec à Trois-Rivières

    3351, boulevard des Forges, Trois-Rivières (Québec) G8Z 4M3, Canada

    Phone, fax : +00 819 376-5011