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Software for Electric Power Instrumentation
Published in Felix Alberto Farret, Marcelo Godoy Simões, Danilo Iglesias Brandão, Electronic Instrumentation for Distributed Generation and Power Processes, 2017
Felix Alberto Farret, Marcelo Godoy Simões, Danilo Iglesias Brandão
The PSIM is a high-performance simulation software, mainly used for converters and power conditioners, electric machine drives, renewable energy systems, electric vehicles, and many other applications in power electronics. Among its main characteristics, it gives the possibility of integration with the MATLAB/Simulink platform, through the SimCoupler module.
Direct model-based predictive control scheme without cost function for voltage source inverters with reduced common-mode voltage
Published in International Journal of Electronics, 2018
Jae-Chang Kim, Sung-Ki Moon, Sangshin Kwak
Figure 3 and Figure 4 represent the simulation results of the VSI with sampling step Ts = 50 μs, a dc-link capacitor voltage Vdc = 200 V, the load resistance R = 2.5 Ω, the load inductance L = 15 mH, and the back-electromotive force e = 20 V, conducted from the conventional and developed methods. For the simulation, the PSIM developed by Powersim Inc. was used. In Figure 3(a) and Figure 4(a) which show the a-phase reference current (i*a), the output currents (ia, ib, ic) and the CMV (vCMV), all the output currents resulted from the conventional and developed methods exactly follow the reference currents and there is not notable difference in the quality of output currents of the conventional and developed methods even though the six non-zero vectors are only used. In addition, the CMV which the developed method generates is ±Vdc/6. This value is much small in comparison to that of the conventional method which changes from –Vdc/2 to +Vdc/2. Figure 3(b) and Figure 4(b) show a-phase and b-phase voltage vectors (van, vbn). On the other hand, Figure 3(c) and Figure 4(c) describe the frequency spectrum of the output current (ia) obtained from the conventional and developed methods. The total harmonic distortions (THD) which are calculated from the output current of the conventional and developed methods are denoted in Figure 3(c) and Figure 4(c). The THD for the developed method is a little large in comparison to that for the conventional method since the zero vectors are not used in the developed method. Thus, the developed method with the direct selection of only using the non-zero vectors can successfully lower the pick CMV value and yield comparable output current quality, compared with the conventional method.