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Progresses obtained in command and power electronics have increased the technical and economic performances of brushless direct current motors. Consequently, the problem of optimum design and operation of these motors, frequently used for driving small vehicles, is a very present one. Studies presented in literature show that high oscillations of torque occur in these motors in a complete rotation...
The specific problems of the disconnection of HVDC breakers need an analysis of performances at laboratory scale. In the study of hybrid circuit breakers with commutation, three steps are necessary: modeling, simulation and experimental tests. The paper presents a modeling procedure for a hybrid commutation breaker intended to operate using resonant circuits phenomenon. Using the Matlab platform,...
This paper presents ongoing work on the formalism of Cyber-Physical Systems (CPS) simulations. These systems are distributed real-time systems, and their simulations might be distributed or not. In this paper, we propose a model to describe the modular components forming a simulation of a CPS. The main goal is to introduce a model of generic simulation distributed architecture, on which we are able...
A Simulink based model for a centrifugal pump power estimation is proposed. The new model consists of the pump, pipeline, pressure regulation valve, fluid reservoir and metering equipment. The model is developed to provide the possibility of power calculation during both throttling and speed control. To evaluate the model, a series of tests have been conducted. Tests proved that the designed model...
Power system restoration takes place where power systems experience a blackout and might be splitted into several islands with limited number of black start units. The main challenge of the restoration process is to keep both frequency and voltage within allowable limits while restoring the network through energizing lines and transformers as well as load pickup. The load pickup scheme is determined...
The article presents results of parametric identification of mechanical part of drive system with permanent magnet synchronous motor by means of heuristic method of Particle Swarm Optimization (PSO). The assumed mechanical part has a complex structure, consisting of two-mass connected by an elastic joint with backlash. The optimization process was designed to find model parameters that assure the...
This paper presents an estimation procedure of equivalent electric circuit parameters of a lithium-ion cell using data from a pulse charge/discharge test. An extraction process of the model parameters is based on a transient voltage response of relaxation process following a current pulse. The entire procedure is straightforward and there is no restriction in a number of parallel RC-branches in the...
Dynamic manipulation of magnetization state (MS) in variable flux permanent magnet synchronous machines (VF-PMSMs) during normal operation based on the torque-speed operating conditions has been shown to significantly reduce machine losses over urban driving cycles. However, the additional losses that are induced during the dynamic MS manipulation have not been evaluated. This paper presents a combination...
Medium frequency transformers are an essential part of new energy conversion systems, and are very often subject to non-sinusoidal excitation. Therefore, usual methods to represent magnetic materials behavior inside transformers with electrical equivalent scheme are very limited in this case. This paper focuses on the development of a new model based on the loss separation method. This model is implemented...
A Power Hardware in the Loop (FHIL) platform implementation for performing real time simulations of electric systems is proposed. The test bench consists of a FSS'®E real time power flow calculation in combination with a controlled grid emulator. Experimental results are presented to demonstrate the performance of the platform.
The loT (Internet of things) is emerging as a wide variety of devices are attached to the Internet to support ubiquitous and pervasive sensing and computing, home automation, and the shift toward smart cities. As the IoT becomes a critical part of the Global Internet on which we increasingly rely, resilience is increasingly important. Of greatest concern is resilience to large-scale disasters that...
The simulation of transmission and distribution grids comes with a trade-off between the number of modeled components and the modeling depth on the one hand and the simulation speed on the other hand. An example system of a grid converter of a 2 MW full scale converter system is used to show a step-by-step model order reduction. Starting from a detailed switched model the order reduction is shown...
This paper presents the possibility of using a point-to-point voltage source converter — high voltage direct current (VSC-HVDC) transmission system connecting offshore wind power plant (WPP) to the onshore grid as black start unit to initiate the restoration process for an interconnected electrical system after a large area system blackout. The onshore converter station (CS) provides voltage in order...
In this study, a novel mode l of a Hybrid Electric Vehicle (HEV) based off the 2016 Chevy Volt is implemented and examined. The study will also examine the operation of the modified Series Parallel Hybrid Electric Vehicle (SPHEV) and modeled powertrain components contained within. The 2016 Chevy Volt has six unique modes of operation; however, the dual Permanent Magnet Synchronous Motor (PMSM) EV...
This paper presents a study related to Hybrid Electric Motorcycle (HEM) with a front wheel DC electric hub motor using Lithium Ion battery that renovated from Honda Lead 110cc. The rear wheel is driven by drive train integrated with a continuously variable transmission (CVT) as its origin. Both of them are able to provide propulsion torque separately or simultaneously. Fuel consumption and performance...
Simulation has been used for decades as a tool to support decision making in manufacturing systems. It is far cheaper and faster to build a virtual system and experiment with different scenarios and decisions before actually implementing the system. Simulation has been widely used to support decisions in manufacturing systems' operations and configuration. Nevertheless, knowing the changeable nature...
The article addresses specific issues of the automated heating systems for non-residential buildings, which aim to ensure thermal comfort with low energy consumption. The specialized automatic system maintains constant the indoor temperature when the heat input in building equals the heat loss through the building envelope. The specialized automatic system consists of several subsystems. The model...
In this article is modeled, with the help of Simulink, the automatic system that controls the thermal agent temperature in a non-residential building chosen for study. It describes how the model has been drawn for the subsystem entitled HEATED SPACE in the building. There were used mathematical relationships which show how the indoor temperature is changing, depending on the heat input in building...
The adoption of electric vehicles (EVs) as an alternative form of transportation over internal combustion engine (ICE) driven vehicles introduces unprecedented challenges to the electrical distribution network due to the increased demand on the power system. This study provides the foundation for successful grid-connected EV deployment. The impact of the battery EVs (BEVs) on the electrical distribution...
This paper presents a 12V batteries modeling approach suitable for both lead acid and Li-ion batteries. In this work we have developed a simulation model, based on equivalent circuit models, of the lead acid and 12V Li-ion batteries in order to study their operating behavior. The trade-off between model accuracy and complexity is analyzed in order to obtain a proper model behavior under various operating...
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