DSIM

📄 Paper sharing: Comparison and Analysis of DSIM and SIMULINK Simulation Based on MMC System We are pleased to introduce the paper "Comparison and Analysis of DSIM and SIMULINK Simulation Based on MMC System" written by Liang Yongtao and Chen Jianan, Jiang Dong from Huazhong University of Science and Technology. The paper was presented at the 2021 IEEE 4th International Electrical and Energy Conference (CIEEC). Know more about this paper: https://lnkd.in/g8tUCctR 👉 Brief Introduction: Due to its versatile output capabilities, scalability, and high modularity, the Modular Multilevel Converter (MMC) is increasingly applied across various sectors such as high-voltage direct current transmission and renewable energy generation systems. However, the numerous switching devices within the MMC generate electromagnetic interference (EMI), significantly affecting system stability. DSIM is utilized in this paper. "This simulation mechanism greatly shortens the time cost and makes the power electronics simulation more convenient. In addition, it can also simulate the transient process of switching devices." This paper compares DSIM results with Simulink, illustrating DSIM's capabilities in simulating power electronic circuits. ✅ MMC-HVDC system simulation using DSIM "A 17-level MMC-HVDC system is built on the DSIM platform. The system adopts the nearest level modulation (NLM), contains an inner loop current controller, can perform closed-loop control, and performs capacitor voltage balance based on a sequencing algorithm." In this paper, MMC systems of the same scale are also built on Simulink, comparing DSIM with Simulink from two aspects: general simulation model of MMC and MMC simulation model with stray parameters. For general MMC simulation model, it can be seen that "the DSIM software can simulate the transient change process of the IGBT, while the Simulink IGBT is an ideal model, and its switching action changes instantaneously. Therefore, the IGBT model of DSIM is closer to the actual situation, and the simulation results are more accurate". "For the simulation speed, when the system running time is 0.4 s, and the step length is 0.1μs, the simulation time of Simulink software is 8 minutes and 20 seconds. DSIM simulation software does not need to set the step length due to its adaptive step length, and its simulation time is 36 seconds. The difference between the two is nearly 14 times. It can be seen that the discrete-state event-driven simulation mechanism adopted by DISM simulation software is effective and can greatly increase the simulation speed, and the results will not be affected." For model with stray parameters, DSIM could accomplish the MMC simulation while simulating the switching transient. "The spectrum obtained by the DSIM software has more high-order harmonics with less amplitude, which are ignored by the Simulink software." #DSIM #Simulation #PowerElectronics #MMC

📄 Paper sharing: Open-Circuit Switch Fault Diagnosis in Single-Phase CHMC with Switching Duty Ratio-Based Estimated Grid Current We are pleased to introduce the paper "Open-Circuit Switch Fault Diagnosis in Single-Phase CHMC with Switching Duty Ratio-Based Estimated Grid Current" written by Hyeon-Woo Oh, Dongho Choi, Jeong-Yul Bang, and June-Seok Lee from Dankook University. The paper was presented at the 2024 IEEE Applied Power Electronics Conference and Exposition (APEC). Know more about this paper: https://lnkd.in/gJ3d5gyM 👉 Brief Introduction This paper introduces a method for diagnosing open-circuit switch (OCS) faults in single-phase cascaded H-bridge multilevel converters (CHMC) using an estimated grid current based on the switching duty ratio. The proposed technique estimates the grid current through the switching duty ratio of each switch during the control period. The faulty switch pair is then identified by analyzing the sign and magnitude of the residual between the estimated and sampled grid currents. Finally, the location of the faulty switch is determined by comparing the magnitude of the residual with the reversely calculated residual. DSIM simulation results confirm the effectiveness of this approach.   ✅ Verify the effectiveness of the OCS fault diagnosis techniques using DSIM In the topology where DSIM is used to verify the effectiveness of OCS fault diagnosis techniques, the gate voltage is 100 V, the gate frequency is 60 Hz, the module DC-link voltage is 60 VDC, the switching frequency of CHMC is 1.67 kHz, the control period of CHMC is 200 μs, the DAB output voltage is 40 VDC, the switching frequency of DAB is 10 kHz, and the Filter inductance is 1.9 mH. According to the DSIM simulation results, the faulty switch can be identified. #DSIM #Simulation #PowerElectronics #Paper #Switch #CHMC

🚀 Quick View: Electric-thermal Simulation and Loss Calculation with DSIM In this short video, we are showing that #DSIM can calculate switching losses by simulating the switching transient waveforms of voltage and current. The case (Dual Active Bridge Loss Calculation) includes 8 active switches, with a switching frequency of 20 kHz. It only takes 3 seconds to finish 100 ms simulation. #DSIM #PowerElectronics #Simulation #DAB #LossCalculation

📄 Paper sharing: Analysis of Hosting Capacity and Power Quality in a Distribution Line with a Photovoltaic Installation: A Case Study We are pleased to introduce the paper "Analysis of Hosting Capacity and Power Quality in a Distribution Line with a Photovoltaic Installation: A Case Study" written by Salma Bennai, Afef Bennani-Ben Abdelghani, Ilhem Slama-Belkhodja and Mahrane Khalfoun from University of Tunis El Manar and STEG. The paper was presented at the 2023 IEEE International Conference on Artificial Intelligence & Green Energy (ICAIGE). Know more about this paper: https://lnkd.in/gpK9NBfT 👉 Brief Introduction The paper explores the issues related to overloading low-voltage distribution lines and its effects on power quality and system stability. The study primarily investigates the integration of photovoltaic(PV) systems into low-voltage feeders, considering both commercial and residential users. It aims to assess the existing and future potential of these distribution lines to accommodate PV installations, particularly focusing on the shift of residential consumers towards becoming prosumers. Additionally, the research emphasizes the consequences of exceeding the distribution line's capacity on power quality and underscores the necessity of adhering to power quality regulations stipulated by grid codes and standards. ✅ Commercial PV inverter simulation using DSIM To investigate potential impacts of high energy consumption or large-scale integration of PV systems at the aggregated user level, considering high-energy-consuming commercial buildings equipped with large PV systems, this paper uses DSIM to simulate commercial PV inverter and analyze the system's performance. The simulation converts one real-life hour into one simulated second. Moreover, the commercial PV setup includes a power-controlled load in parallel. 🚀 "These simulations are conducted using the DSIM software which is capable of simulating simple topologies or large and complex systems with astounding speed and accuracy." #DSIM #Simulation #Powerelectronics #Photovoltaic #Inverter

🔎 Which of the following #webinar topics interests you more? Your feedback is important—let us know what you think! A. Design a large-scale SST (10 kV, LLC type) with high-speed simulation B. Electric-thermal simulation and loss analysis for multi-port SST (non-ideal switch model)

📝 #Paper sharing: Stability Analysis of a Direct-synchronized Single-phase Grid-tied Inverter We are pleased to introduce the paper "Stability Analysis of a Direct-synchronized Single-phase Grid-tied Inverter" written by R. Agrawal, B.P. McGrath, C.A Teixeira, and R.H. Wilkinson from RMIT University. The paper was presented at the 2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP). Know more about this paper: https://lnkd.in/g_fazQKs 👉 Brief Introduction The paper analyzes the stability of a single-phase voltage source inverter (VSI) system by evaluating two direct synchronization methods employed in its phase-locked-loop (PLL): (1) by using the capacitor voltage and second-order generalized integrator (SOGI) quadrature output as PLL input, (2) by directly using both SOGI outputs as PLL inputs. A synchronous reference frame small-signal model is developed by introducing fictitious orthogonal quantities, and Floquet theory is applied to analyze the stability. Validation includes DSIM co-simulation and experimental testing with a 5-kW grid-tied inverter.   ✅ Verify the stability analysis and predictions of the Voltage Source Inverter (VSI) system using DSIM co-simulation In this paper, DSIM is used to replicate the experimental setup of the 5 kW VSI system and simulate the system's behavior, comparing it with analytical predictions derived from mathematical models such as matrix eigenvalue analysis. Furthermore, DSIM co-simulation results validate practical data including capacitor voltage, inverter output current, PLL frequency, and phase. #DSIM #Powerelectronics #Simulation #VSI #PLL #Paper

#Paper sharing: Virtual Synchronous Generator Control Integrated into a Microgrid We are pleased to introduce the paper "Virtual Synchronous Generator Control Integrated into a Microgrid" written by Miriam Elizabeth Lucero - Tenorio， Enric Torán， Raúl González-Medina, Emilio Figueres and Gabriel Garcerá from Universitat Politècnica de València. The paper was presented at the 2023 IEEE Seventh Ecuador Technical Chapters Meeting (ECTM). Know more about this paper: https://lnkd.in/gUum3hVh 👉 Brief introduction: Virtual synchronous generators (VSGs) play a crucial role in this context by facilitating the integration of renewable energy sources and enhancing system stability amidst voltage and frequency fluctuations in the grid. Distributed generation can be categorized into two common scenarios: multiple renewable energy sources connected to independent power sources or to the electrical grid while supplying power to an equivalent total load. This study explores grid-connected and islanded operations, analyzing how two VSGs with different characteristics operate in parallel with their own control strategies. DSIM is used to develop and simulate dynamic and control models of VSGs under "On-grid" and "Off-grid" cases. “Simulation results demonstrate these connections’ effectiveness when appropriate control criteria are followed, showing their potential in practical applications.” ✅ Modeling and simulation of virtual synchronous generators (VSGs) using #DSIM In this paper, DSIM is used to develop dynamic and control models for two VSGs operating in parallel with specific loads under "On-grid" and "Off-grid" cases. Implementing Q-V and P-ω control strategies establishes a robust method to maintain stable frequency and voltage levels in microgrids. In both cases, active and reactive power measurements are taken from the load to provide feedback signals for the droop controllers. Moreover, feedback from the output voltage and current signals of each Virtual Synchronous Generator (VSG) ensures effective control over voltage and current. The paper uses DSIM to simulate and analyze three scenarios: "On-grid connection", "ON-grid connection with one load", "Off-grid connection with one load". #DSIM #Powerelectronics #Simulation #VSG

🚀 Quick View: Non-Ideal Switch Inverter Simulation with DSIM In this short video, we are showing how fast #DSIM can simulate inverter with non-ideal switch models. It only takes less than 1 second to finish 200 ms simulation. #DSIM #PowerElectronics #Simulation #Inverter #Switch

🚀 Quick View: LLC Isolated Bidirectional DC-DC Converter Simulation with DSIM In this short video, we are showing how fast DSIM can simulate LLC Isolated Bidirectional DC-DC Converter with 8 active switches and 200 kHz switching frequency. It only takes 1 second to finish 100 ms simulation. #DSIM #Powerelectronics #Simulation #LLC #Converter

🚀 Quick View: SST Simulation with DSIM In this short video, we are showing how fast #DSIM can simulate 50 kVA Solid State Transformer with 24 physical switch models. It only takes 5 seconds to finish 500 ms simulation. #DSIM #Powerelectronics #SST #Simulation