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This paper present the design and optimization of power converter for the control piezoelectric actuator (PEA). In this concept, the modeling and sizing its components concerning power electronic converter, have been proposed to optimize their operational performance of PEA such as speed, torque, power, and efficiency. The study deals the mathematical model of all parts constituting the PEA and its...
For the description of a permanent magnet excited synchronous machine the idealized equations of common synchronous machines can be used omitting the damping windings and replacing the current excitation by a permanent flux. For a more accurate modeling, nonideal behavior like saturation, cross-coupling magnetization and slotting effects can be included. This is done by extending the common d-q equations...
As friction is the main nonlinear resistance in the flight simulator servo system which can lead to overall flight simulator performance degradation. The mathematical model of flight simulator servo system was created based on a three-axis servo system and the LuGre friction model was analyzed. Exponential approach law was introduced into variable structure control and the robust controller was realized...
With the increasing attention on the operation stability of the high-capacity bidirectional converter, unbalance factor should be taken into account during the design of bidirectional converter system so as to reduce the influence of the power grid unbalance. This paper analyzes the relationships between the dip depth of the grid voltage and the unbalance factor caused by different types of grid faults...
In this paper, a computer simulation of the Salient Pole Synchronous Machine (SPSM) is presented. This simulation employs a modeling based on the machine self and mutual inductance curves, determined from a methodology, not presented here. These methodology applies the experimental volt-ampere method to obtaining the inductances curves. From these inductance data, using a mathematical methodology,...
The pulse-width modulated valve (PMV) plays an important role in the whole electro-hydraulic automatic control system. In this paper, the magnetic field of the axially symmetric plane model simplified of the PMV is simulated with the magnetic finite element, thus accurate results on the distribution of magnetic field and flux-line can be obtained, as well as variation of the magnetic force and inductance...
This paper presents a detailed analysis of the behavior of a DC-DC boost-flyback converter which is a single-switch step up converter with a high voltage gain. The behavioral investigation of this converter is carried out supposing it consists of two converters, a boost and a flyback connected in series. The interesting characteristic of this boost-flyback converter is its modes of operation (continuous,...
Aiming at the problem of induction motor (IM) parameters uncertainty, a novel L2 gain disturbance attenuation control algorithm based on Port-Controlled Hamiltonian (PCH) systems theory is presented for IM. Firstly, a PCH system model of IM is established. Secondly, using interconnection and damping assignment, the desired state error PCH structure is assigned to the closed-loop IM system by the energy-shaping...
Film bulk acoustic resonator model was investigated. This model was based on piezoelectric resonator formula and Butterworth-Van Dyke (BVD) model. Through simulation, the influences of piezoelectric film thickness and materials property and top electrode area on FBAR performance were studied. In the extended equivalent BVD model both the piezoelectric and the electrode layers were considered, and...
The behavior of three-port bidirectional DC-DC converters (TPC) under soft-switching mode for hybrid electric vehicles is analyzed in this paper. The principle of power flow control and the operation under soft-switching mode are studied to establish the converter operation range. All this allows to establish design criteria to operate the TPC under soft-switching within a wide operation region. The...
By using theoretical simulation and orthogonal optimum design, the pumping circuit parameters and gas composition parameters, which influence the output characteristics of XeCl excimer laser, were optimized by orthogonal-optimum design and computer simulation. Meanwhile we analyzed the pump circuit parameters and gas composition on the effect to the XeCl excimer laser output characteristics and the...
A combined optimization approach regarding thermal properties and parasitic elements inside power semiconductor modules for power electronic converters is presented. The proposed method allows the determination of the best suited semiconductor positions on the DBC substrate as well as optimization of the substrate structure. The optimization procedure leads to a matrix representation illustrating...
The search for sustainable mobility solutions is leading to an intense effort in electric vehicles research and development. In this paper, an electric vehicle drivetrain is studied, with special focus on the inductance variation effect in the electric vehicle bidirectional DC-DC converter performance. The system behavior is studied considering an ideal constant inductor compared with different possibilities...
In this paper, a novel design of a LTCC (low temperature co-fired ceramics) transformer for application in DC/DC converters is proposed. The transformer possesses a compact structure with the coils surrounded by dielectric (or ferrite) material and between the coils one dielectric layer is placed. Simulation and measuring results for inductance, coupling coefficient and quality factor of the proposed...
Advantages of operating a Permanent Magnet Synchronous Machine (PMSM) without a position sensor are many and are well known. This paper presents a study of the effects of space harmonics in the incremental inductances and their impact on the machine saliency. The effects of space harmonics exclusively due to the machine (i.e., the saturation saliency distribution) are given particular consideration...
In this paper the parameters of an axial-flux induction machine are determined. The parameters are part of equations describing the dynamic of the machine and hence required to develop a dynamic model based on the winding function theory. This theory is widely used to simulate faults in different radial-flux machines. Former articles all dealing just with radial-flux machines. Here the theory for...
In this paper an advanced simulation model of interior permanent magnet synchronous machine (IPMSM) is presented. The conventional dq-axis mathematical model is modified in order to include data derived from three-dimensional finite element analysis (FEA). Indirect interaction between FEA and circuit simulation enhances model fidelity embodying the influence of saturation and cross-coupling effects...
Propagation of the current pulse of quasi-rectangular shape through transformer in inductive-coupling link is investigated. This shape allows one to use MATLAB for simulation of transients in the transformer. One finds Z-parameters of the transformer circuit, and uses the step response of specially designed pulse-shaping network for simulation of the voltages at the transformer input and output. Comparing...
The windup phenomenon caused by the current limitation and PWM voltage regulation in the brushless DC motor (BLDCM) double PI loop speed regulating system has been investigated. And the anti-windup controller has been applied to suppress the relevant windup phenomenon. The simulation illustrates that the anti-windup controller make the BLDCM speed regulating less overshoot and quickly dynamic response...
A low-end MCU base power factor corrector (PFC) is proposed in this paper. Due to green power issue, PFC is more important, but need an extra controller to achieve. However, in most electric equipments and appliances, the MCU is used to accomplish key functions or handle user interface. The structure and control strategy proposed in this paper is based on the rest calculation resource of the MCU build...
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