The axial flux hybrid excited generator with ability to change the main is considered in paper. A mathematical model of electrical rotor coordinate system was obtained simulate transients and processes stabilizing voltage at variable drive speed. An prototype tested experimental results were compared simulation results.

This paper deals with axial flux permanent magnet generator extended functionality which allows to control magnetic change output voltage and stabilize external characteristics of generator. A mathematical model electrical machine in the coordinate system (d-q) was obtained simulate transients Matlab Simulink. An experimental designed, manufactured tested.

Improving of dynamic performance a control system synchronous drive with field weakening is shown. The controllers the angular speed rotor machine, d and q components stator current have synthesized using concept inverse dynamics problems minimization local functionalities in form acceleration energy kinetic energy. Mathematical modelling has established that application algorithms non-traditional structure provides high characteristics entire range robustness to action parametric coordinate...

This paper deals with the investigation of flux and stator current maximal values autonomous induction generator DC link voltage rotor angular speed below rated values. The dependence maximum from is analytically determined based on circuit electrical equilibrium equations in a steady state. value active component by balance power generator. simulation results excitation processes charge capacitor confirmed analytical studies. Presented can be used design startup algorithms generation...

The introduced control method provides less sensitivity to the variation of parameters electric drive and ensures a dynamic decomposition. coordinate regulators do not contain that is typical for classical regulators. results this study confirmed effectiveness algorithms demonstrated their advantages in comparison with traditional ones.

The hybrid excited synchronous generator with axial magnetic flux for microhydropower unit and its operation mode is considered in this paper. A mathematical model of machine excitation the rotor coordinate was obtained to simulate voltage stabilization process depending on drive speed load. To validate results simulation an 8-pole prototype tested.

In the paper description of Field Oriented Control with cascade control electromechanical coordinates synchronous electric drive is presented. The algorithms components stator current and speed Surface Mounted Permanent Magnet Synchronous Machine that had developed on basis concept inverse problems dynamics allowed obtaining high dynamic performance quality in conditions parametric uncertainty. simulation results confirmed effectiveness proposed method electrical drive.

Purpose. Development of a mathematical model an autonomous wind power plant based on end-generator with double stator and combined excitation to evaluate methods for improving the efficiency conversion mechanical energy into electricity. Methodology. The research used general theory plants, modeling, which are numerical solution nonlinear differential equations correcting output in Matlab-Simulink by modifying standard units. Findings. A simulation consisting magnetoelectric generator axial...

This paper deals with synchronous axial-flux generator hybrid excitation in a stand-alone mode, when the field winding is powered by armature winding. A mathematical model of electrical machine rotating coordinate system was developed to simulate output characteristics Matlab Simulink. The magnetic losses were taken into account estimate efficiency generator. designed manufactured and tested.

System of vector control the speed rotor field regulated reluctance motor with during action parametric perturbations is presented in paper. In order to provide robust are synthesized algorithms speed, components stator current and excitation on basis concept inverse dynamics problem combination minimization instantaneous motion energy functionality. The study quality indices system was carried out using mathematical modeling.

The electric vehicles are considered one of the most fast-growing industries today. Their efficiency exceeds internal combustion engines, but it can be improved even more. power supply - Li-Ion accumulator provides significant heat losses due to its resistance. Connecting supercapacitors in-parallel battery decrease these losses. This paper shows that such connection depends on supercapacitor capacitance and rational value capacitance, providing minimum energy consumption, exists. During...

The object of this study is electromechanical processes in an autonomous wind power plant with a magnetoelectrical generator. Under actual conditions, the speed constantly changing. turbine works as efficiently possible only at rated value speed. When changes, efficiency converting mechanical energy into electrical decreases. Controlling electric generator when changes relevant scientific and technical task. A maximum selection control system based on parameters experimental sample...

Speed control system of surface permanent magnet synchronous motor (SPMSM) drives with field weakening is presented. The algorithms for electromechanical coordinates are synthesized using the concept inverse problems dynamics. This allows obtaining robust controlling components vector that provided stability dynamic characteristics in conditions changing parameters object proposed range. quality automatic evaluated mathematical modeling. Effectiveness applied method electrical drive has...

The object of this research is electromechanical processes in a generator with an axial magnetic flux and double stator additional non-contact excitation winding operating as part autonomous electric power systems. the system about 2 % power. presence winding, which powered by direct current, makes it possible to control voltage changing current. This resolves task stabilize output permanent magnets when load shaft speed change. paper reports construction three-dimensional field axisymmetric...

The object of research in this work is a three-phase magnetoelectric generator with magnetic flux shunting based on industrial induction electric motors. presence shunt makes it possible to control the voltage by changing excitation current non-contact electrical winding shunt, which powered direct current. Thus, problem stabilization output permanent magnets solved when speed rotation and load change. This paper reports construction three-dimensional field mathematical model generator,...

The main converter of mechanical wind energy into electricity in turbines is an electric generator. Typically, such systems use synchronous generators with permanent magnets on the rotor. disadvantage this design complexity or impossibility adjusting output parameters generator: voltage, power, etc. Known methods and tools aimed at solving problem relate to cases where speed constant, ie constant. In real conditions, nature changeable. average annual for Ukraine varies between ≈ 5-6 m / s....

The electrical drive based on hybrid excited synchronous machine (HESM) can be good choice instead the tradition electric upon induction motors due its higher performance index. Nevertheless, HESM is more sensitive to coordinate and parametric perturbations that may have influence performance, efficiency. Also, it substantial impact control quality. work devoted development of laws an idea reversibility Lyapunov direct method for stability analysis, using instantaneous value energy as...

The paper examines a series of speed control algorithms for synchronous permanent magnet motor in sliding mode, providing asymptotic stability the first, second, and third order. In system exhibits properties that are unattainable with classical continuous algorithms. developed based on inverse dynamics method combined minimization local instantaneous energy functionals. key idea lies reversibility direct Lyapunov analysis. closed-loop has predefined function, represented by energy. Notably,...

The methodology of the correct identification aerodynamic coefficients aircraft is considered, namely determination partial derivatives forces and moments according to its state variables. method determining static (balancing) dependencies from short-term dynamic modes a natural experiment also presented. effectiveness proposed approach confirmed by practice characteristics various aircraft.

Розвиток автоматичних та роботизованих зварювальних систем значною мірою ґрунтується на використанні засобів адаптації траєкторії руху зварювального пальника. Основне місце серед таких сьогодні займають візуальні сенсори. Разом з тим при зварюванні коливаннями дуги для пальника до реального місця з'єднання деталей перспективним є оцінювання положення електрода відносно лінії зварювання основі струму зварювальної дуги. Істотні переваги оцінювачів полягають у відсутності додаткового обладнання...

The work examines the topical issue of autonomous movement electric vehicles in conditions insufficient electricity generation or during its emergency shutdown. article deals with energy efficiency operation based on use a battery supercapacitors to power powerful traction drive. study was carried out by modeling using example an drive subway car. paper presents mathematical model supercapacitor and asynchronous motor. has typical vector torque control system. A DC-DC converter is used match...

The application of hybrid excited synchronous generator as a part autonomous wind turbine is studied in case load and speed changes. control system ensures maximum power output at any given speed. Maximum achieved by excitation current additional field winding. generators developed based on minimization local functionals instantaneous values first order derivative electromagnetic energy. It provides robustness to parametric coordinate disturbances high quality control. On the example an...

The electric drive with a squirrel-caged induction motor working in frequent start-stop modes is the object of this study. These drives have wide applications nowadays, such as vehicles and hybrid vehicles, so improvement their efficiency during transients an important task today.The one problems lays high energy consumption transients, especially if we talk about acceleration motor. Due to starting currents large amount consumed dispersed heat on windings. experimental studies carried out...

The multi-step process of structural-parametric identification mathematical models control objects according to the principle rational complication is considered. Identification specifies model object and methods its in accumulation a posteriori information. quality structural parametric an depends on amount priori information that grows after conducting experimental studies. For qualitative solution problem, it necessary rationally complicate analyzing results previous step. Examples...