The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents the studies of the nonlinear control method of variable speed wind turbine system with Permanent Magnet Synchronous Generator (PMSG). The considered system consists of wind turbine with direct-driven PMSG, the Machine Side Converter (MSC), Grid Side Converter (GSC) and control circuits. The mathematical models of wind turbine system and PMSG have been described. The control algorithms...
The paper presents the Direct Field-Oriented Control of five-phase squirrel-cage induction motor with the application of the second order sliding-mode control algorithm called as “super-twisting” (STSM-DFOC). The mathematical model of the five-phase squirrel-cage induction motor has been presented. The method of Space Vector Modulation used to control a five-phase Voltage Source Inverter has been...
In the paper a control algorithm of an electrical machine, that is based on its hamiltonian mathematical model described in the dq0 reference frame, is introduced. The algorithm is designed to be specifically useful to control Synchronous Reluctance Machines. In the algorithm flux linkage values in the direct and quadrature axis are treated as state variables. Those flux linkage values and the electromagnetic...
This paper presents comparison of two control algorithms for DC/DC converters in vehicle chargers. It presents operation in phase-shifting algorithm and resonant LLC algorithm, their implementation, and test results.
The use of permanent magnet motors improves the operational performance of a drive unit while significantly reducing the operation cost of the device and its maintenance. Unfortunately, the high cost of these machines is a major barrier to increasing their market share in small-size drive units where the return on investment period is long. The high cost of equipment makes manufacturers use only one...
When using many rectifying devices, higher harmonic components of currents absorbed by them from the grid become significantly important. They can cause very harmful phenomena connected with grid power outages, glimmering of lights or significant heat losses. The 18 pulse rectifier circuits presented in the article enable to lower the content of higher harmonics of the current absorbed from a grid...
When using many rectifying devices, higher harmonic components of currents absorbed by them from the grid become significantly important. They can cause very harmful phenomena connected with grid voltage drop, glimmering of lights or significant power losses. The presented 18 pulse rectifier circuits enable to lower the content of higher harmonics of the grid currents. When considering leakage inductance...
In the paper, results of simulation and laboratory tests of a multi-pole brushless motor with permanents magnets which stator magnetic circuit was made from an anisotropic sheet with thickness of 0.23 mm were presented. The torque static characteristics were determined based on numerical calculations and they were compared with results from laboratory tests. Waveforms of currents, voltages and electromagnetic...
The paper presents an electrical machine prototype with embedded permanent magnets and magnetic barriers for electric motorcycle drive. The selected experimental results in comparison with simulation results carried out by using Ansys Maxwell have also been presented. Individual stages of design and construction of the proposed machine have been reported. The aim of the work was to build and test...
The paper presents monitoring acceleration process of missile in the hybrid electromagnetic launcher with use of FPGA module. The elaborated system enables us to measure charging and discharging voltages and currents of a capacitor batteries supplying the electromagnetic modules. It allows us also to measure velocity of the missile process. The presented monitoring system employs the CompactRIO 9022...
The paper presents a 2D field-circuit model of coupled electromagnetic thermal and mechanical phenomena in a line start permanent magnet synchronous motor (LSPMSM). The nonlinearity of the magnetic circuit, the influence of temperature on magnetic properties of the permanent magnets as well as on electric and thermal properties of the materials have been taken into account. The elaborated on the basis...
In the paper the concept of the novel speed and rotor flux observer with additional stator and rotor resistance estimator is presented. System is checked from the safety point of view and possibility of the application in the Fault Tolerant Control (FTC) systems. Simulation are performed in the Direct Field Oriented Control (DFOC). As a based speed estimator the MRASCC was used. Influence of the stator...
In the paper, three-phase motor with permanent magnets which consists of two independently supplied windings on stator called by the authors DCBLDC (Dual-Channel Brushless Direct Current) was discussed. The stator windings are supplied by two independent power converters. During normal operation, the machine operates in dual-channel operation mode whereas after fault of one channel, further operation...
The paper presents design process and tests of a prototype low speed permanent magnet synchronous generator (PMSG) dedicated for the innovative vertical-axis wind turbine. The rated data of the designed generator are following: power − 15 kVA, voltage − 400 V (Y), rotation speed − 93.75 rpm. The design assumptions, chosen results of the design process and experimental tests of the prototype PMSG are...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.