Open AccessModel, design and implementation of a low‐cost HIL for power converter and microgrid emulation using DSP
Author(s) -
Bastos Renan F.,
Fuzato Guilherme H.,
Aguiar Cassius R.,
Neves Rodolpho V.A.,
Machado Ricardo Q.
Publication year - 2019
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2019.0302
Subject(s) - digital signal processing , emulation , converters , microgrid , hardware in the loop simulation , controller (irrigation) , dspace , inverter , digital signal processor , electronic engineering , computer science , engineering , embedded system , electrical engineering , voltage , agronomy , algorithm , economics , biology , economic growth
In this study, the authors propose a method to implement a low‐cost hardware‐in‐the‐loop (HIL) system for power converters and microgrids design, test and analysis. This approach uses a digital signal processor (DSP) Texas Instruments as the HIL core. All the differential equations of the power converters are solved in real‐time by the DSP and displayed in the digital‐to‐analogue outputs. Three different converters are modelled in this study: boost converter, single‐phase inverter connected to the grid and three‐phase inverter connected to the grid. Experimental results are obtained and compared to the HIL response. These results were made triggering the real converter and the HIL with the same open‐loop pulse width modulation signal, showing high fidelity between the digital models over the real systems. In a second moment, a microgrid is modelled in the proposed HIL and tested with a closed‐loop controller. The experiments show that the proposed hardware supports time steps as low as 1 μs or 1 MHz update rate, depending on the model. The proposed technique has the potential to reduce testing time and cost, once commercial HIL devices such as Typhoon, dSPACE and RTDS have a significant cost, not affordable or available to all the research community