Impedyme’s Post

A Power Hardware-in-the-Loop (PHIL) test takes your model and controller validation to another level. With CHP from Impedyme, I strongly believe you can level-up your PHIL testing one notch higher. The best part is, you just need to deploy your Simulink models and provide power connections! #PowerElectronics #PowerSystems #Emulation #PHIL

A multilevel inverter (MLI) is an ingenious technology in generating a sinusoidal output voltage for AC applications. Higher output voltage levels improve the waveform quality but render increased size and power loss due to higher component count. In this paper, a new MLI topology with reduced device count is proposed which generates different numbers of output voltage levels according to the source management without altering the proposed circuit configuration. This MLI consists of ten semiconductor switches and two isolated DC sources. The asymmetric source management of 1:3 generates seventeen levels in the output voltage waveform and nine levels with symmetric (1:1) and thirteen levels with binary-asymmetric (1:2) source selection. This work projects the application of the proposed 17-level MLI in a constant power standalone solar energy conversion system. Minimum switching transitions and fundamental-voltage-reference-based switching angle calculation are adopted to achieve sinusoidal output voltage with least switching loss. As compared with the established 17-level MLI topologies, the proposed configuration has a lower component count level (CCL), lesser total blocking voltage (TBV), lesser THD, low switching frequency, no electromagnetic interference, more efficient, and cost-effective. This manuscript incorporates the design, simulation, and experimental validation of the proposed system for different PV input and load conditions.

The penetration of inverter based renewable energy resources comes with several challenges for the grid power quality, due to the impact of the electronic devices in the grid voltage profile, which can cause harmonic disturbances and then affect all other installations nearby. The recent paper published in Eletrônica de Potência (Open Journal of Power Electronics) analyzes the effects of grid voltage harmonic disturbances in the operation of a grid-connected Voltage Source Converter (VSC) with current control in the stationary reference frame. #RenewableEnergy #PowerQuality #InverterControl #GridVoltage #Harmonics #VoltageSourceConverter #VSC #CurrentControl #StationaryReferenceFrame #PowerElectronics #HarmonicDisturbances #ResonantControllers #GridIntegration #MathematicalModeling #SimulationAndExperiment #EnergySystems #PowerGrids #SustainableEnergy

I would like to share our most recent paper published in SOBRAEP's journal. The study evaluates the influence of grid voltage harmonics in the output currents of a VSC controlled in the stationary frame. A disturbance rejection analysis is conducted in order to predict the magnitude of the VSC output harmonic currents according to the magnitude of the respective grid voltage harmonic. Such analysis is relevant not only in the modelling and prediction of inverter based renewables but can also be utilized in the resonant controller design, which is also shown in the paper. Furthermore, the methodology limitations are presented in the paper due to the impact of hidden currents.

In recent years, there is a demand to integrate renewable energy sources via microgrid systems. The energy management role is to provide information about system generation and distribution of energy supply at minimal operational costs. In energy management methodologies in microgrids, there are many methods based on linear programming, non-linear programming, and artificial intelligence methods. this image shows a summary of available energy management methodologies. To maximize the power output, maximize storage systems or minimize electricity costs optimization techniques that can be implemented are:  linear and non-linear programming, dynamic programming, as well as stochastic and robust programming. #hybrid #microgrid #hydrogen #energy #management #system #control #AI

The Energy Engineering is pleased to highlight the recently published cover article titled “Maximum Power Point Tracking Technology for PV Systems: Current Status and Perspectives,” authored by Bo Yang, Rui Xie, and Zhengxun Guo. This paper systematically discusses the current research status and challenges faced by PV MPPT technology around the three aspects of MPPT models, algorithms, and hardware implementation. Through in-depth thinking and discussion, it also puts forward positive perspectives on future development, and five forward-looking solutions to improve the performance of PV systems MPPT are suggested. Read the full article here: https://lnkd.in/g66i7tmq. #MPPT #Photovoltaics #EnergyConversion #RenewableEnergy #SolarEnergy #Engineering #Research #EnergyEngineering

MAIN STABILITY INDICES IN POWER SYSTEMS FOR RENEWABLE ENERGY SOURCES (RES) INTEGRATION:- 3-Transient stability: CCT Transient stability is defined as ”the ability of a power system to maintain synchronism when subjected to a severe transient disturbance”. During such an event, the system response involves a large excursion of the generator rotor angle and is influenced by the nonlinear power-angle relationship. A well-established transient stability index is the fault critical clearing time (CCT). This stability index provides an upper bound on the duration of a short-circuit fault before it is cleared by the protection relays, such that the system regains synchronism once the fault is cleared. This parameter represents the maximal fault duration for which the system remains transiently stable. Mathematically, the CCT is a complex function of pre-fault system conditions, fault structure, and the post-fault conditions which themselves depend on the protective relaying scheme used. Multiple methods can be used to determine the CCT, one of these methods is the use of classical time-domain simulations. This method consists of performing repetitive simulations for a short-circuit fault at a specific bus, by increasing the fault duration. The CCT is then determined from the rotor angle variations. An SG cannot return to stability if the critical clearing angle is exceeded during a fault. With the continuous increase of RES connected to the grid via power electronic converters, the traditional CCT assessment methods are no longer sufficient. so new criteria are proposed to calculate critical clearing time, taking into consideration the technical limitations of static power electronics converters. #ENG_TAHA

Tackle emerging distribution planning use cases by efficiently planning, designing and operating electricity grids with PSS®SINCAL. Be ahead of the change. Simulate smart grids and implementation of renewable integration strategies and technologies via automated modules. #PSS®SINCAL #Simulation #Software

The intricate world of power grids has always fascinated me. Recently, I've been delving into the fascinating field of power system modelling. This field equips engineers with the tools to analyze and simulate the behavior of electrical grids, ensuring their stability and efficiency. Understanding how these complex systems function and how to optimize them for the future is crucial as we integrate more renewable energy sources. I'm excited to learn more about power system modelling and its role in building a more sustainable and reliable electric grid  #PowerSystems #Engineering #LearningAndDevelopment 😊

Power Quality Analysis using the #FLUKE-437 Series device. Have you ever checked the power quality of your systems? Share your experiences and insights below! Here's why it matters: In today's interconnected electrical systems, ensuring a reliable power supply is more critical than ever. Enter the Power Quality Analyzer, a sophisticated tool that plays a pivotal role in maintaining the stability and efficiency of electrical systems. Key benefits: a) Real-time monitoring of voltage fluctuations, harmonics, and disturbances. b) Precise analysis of power quality parameters to identify potential issues. c) Helps optimize energy usage and reduce operational costs. d) Ensures compliance with industry standards and regulations. Whether you're in manufacturing, facilities management, or renewable energy, understanding and utilizing these tools can significantly enhance operational efficiency and reliability. #PowerQuality #ElectricalEngineering #EnergyEfficiency #RenewableEnergy #Harmonics