In this article, a new ultrahigh step-up dc–dc converter is proposed. The circuit composed of quadratic boost (QBC), two coupled inductors (CIs), and voltage multiplier cell. distinguishing features are low stress on the main power switches, continuity input current, common ground between load source, gain. Among all compared converters, gain in entire duty cycle CIs turn ratio range higher unique its kind. A prototype also prepared order to experimentally validate feasibility effectiveness...

In this study, a hybrid particle swarm optimization (HPSO) approach is presented for enhancing the performance of three-phase, 12-slot, 19-pole yoke-less axial-field flux-switching permanent magnet (YASA-AFFSPM) motor. The aim process to achieve motor that demonstrates high efficiency and stable operation. To facilitate this, finite element analysis model developed, multi-objective function utilizing weight coefficients created. variables in study include split ratio, stator axial length,...

In this study, the winding function method is modified and used to calculate machine inductances in two different cases, namely, a healthy case short‐circuited stator case. For first time, numerical air‐gap addition model of air gap salient‐pole machines which considers slot effects. The (MWF) introduced here more precise when compared with previous methods. This MWF enables one compute accurately. Also mathematical that allows taking rotor core saturation into account both faulty conditions...

This paper presents the design, analysis, and fabrication of a new miniaturized microstrip branch line coupler (BLC) with high harmonics suppression. The T-shaped resonators, open stubs cross-shaped resonators radial are used in proposed design. designed BLC operates at 1 GHz frequency, which can suppress up to 5th spurious 20 dB level attenuation. High miniaturization about 86% is obtained for BLC, corresponding normalized size 0.009 λg2. measured values isolation return loss 28 29 dB,...

A new method for flux weakening in surface permanent magnet (SPM) machines is proposed this paper. This called winding switching technique and can reliably double the field speed range of PM motors. significant because extending constant power ratio (CPSR) SPM usually challenging task due to presence low-permeability magnets resulting low machine inductance. In usual three phase motor windings are separated into two portions each portion connected an inverter. The paper discusses stator...

This study presents a new method to detect the magnet defects in permanent (PM) machines by calculating magnet's MMF function from machine's electrical variables. The authors propose for first time an inverse transformation map winding flux waveform into corresponding function. analysis of this defines fault occurrence and its position. is computed variables adopts reduced order model magnetic equivalent circuit define direct transform between flux; reason call approach method. A dedicated...

One of the most important factors reducing flexible manipulator efficiency is residual vibration occurrence. In this research, reduction manipulators investigated using an internal frictional damper. At first, equation a obtained finite element method with Euler–Bernoulli beam to study its vibrations in reciprocal motion. addition, analytical model developed investigate effect damper on robot link vibrations. Using particle swam optimization, ICA, NSGA-II, and GWO methods, optimal structure...

Abstract A new method for flux weakening of either surface permanent magnet or buried machines is proposed in this article. This method, termed the double-bridge winding switching technique, can reliably double field-weakening speed range motors. feature significant since extending constant power ratio a particularly challenging task due to presence low-permeability magnets and resulting low machine inductance. In field weakening, usual three-phase motor windings are separated into two...

When an internal fault occurs in the wave-connected windings of salient-pole synchronous generators, symmetry between parallel is broken, and different currents flow them since unsymmetrical magnetic linkage exists stator windings. The aim this article to present a model investigate large hydro generators with wave This based on modified winding function approach, where machine inductances are calculated directly from distribution, space harmonics produced by also taken into account. By...

Summary In this paper, a new combined impedance‐source network inverter (CISI) with high voltage gain in low duty cycle is presented. With common ground between the input source and bridge continuous current, proposed converter suitable choice for renewable energy applications. The of switches low, leading to reduction losses improving efficiency. Also, due small cycle, modulation index can be increased, as result, quality output voltages currents greatly improved. circuit has no switch...

In transport applications such as high-speed trains and hybrid machines, it is essential for motor to achieve speeds above nominal speed operate in the field weakening region. A new approach weaken permanent magnet machine proposed this paper. way, three-phase stator winding of divided into two parts, each part being connected an inverter. This method called double switching technique, which can surely multiply range magnetized motors. research examines windings connections, allowing work at...

This paper presents a practical consideration to implement sensor-less system drive on the Axial Flux Permanent Magnet (AFPM) motor with high performance Digital Signal Processor (DSP) in real time. An on-line Extended Kalman Filter (EKF) is applied estimate position and angular speed by measuring voltages currents. In order achieve desirable dynamic robustness performance, Genetic Algorithm (GA) used tune coefficients of PI controller. algorithm arranged these considering importance three...

Purpose In this paper, an improved multiobjective particle swarm optimization (PSO) algorithm is proposed to optimize a three-phase, 12-slot, 19-pole, yokeless axial-field flux-switching permanent magnet (YASA-AFFSPM) motor. Design/methodology/approach Based on the structural characteristics of YASA-AFFSPM, mathematical model established calculate main size YASA-AFFSPM The split ratio, stator axial length, sandwiching pole angle, rotor PM arc and number conductors per slot are selected as...

In this paper, Non-dominated Sorting Genetic Algorithm (NSGA) is used to reduce cogging torque in Permanent Magnet Synchronous Motor (PMSM). NSGA a Multiple Objective Optimization (MOO) algorithm. Three parameters that are related magnets of machine i.e. pole embrace, magnet thickness and offset as optimization variables the The goal algorithm minimize peak value while average air gap flux density remains unchanged. Also tries area magnets. each iteration GA, Finite Element Method (FEM)...

Abstract A new multiport DC–AC converter is proposed for standalone and off‐grid tied applications. The configuration converts power from DC to AC form in a single stage with suitable voltage gain. To increase the certainty of supporting power, designed operate four modes, including battery‐alone mode. other advantage presented work supplying output during unbalanced conditions input ports. advanced features being used applications are related placement structure bidirectional port. In...

Summary This paper presents a new single‐phase multi‐port DC–AC converter with high voltage gain in low duty cycle. The operation of the proposed consists four modes, especially battery‐alone mode, which makes it appropriate for stand‐alone renewable applications. Using suitable boosting method, this can achieve all modes. performance occurs at both shoot‐through cycle and modulation index. Therefore, output current harmonics as well filter size are reduced. In addition, transfers power...

In the permanent magnet linear synchronous motor (PMLSM), force ripple is harmful, useless and disturbing. The basically composed of two components: detent mutual ripple. This influenced by geometric parameters (PM) motors; such as width, thickness length poles, rotor stator, stator slot shape. For design optimization, can be considered objective function variables. this paper, distribution magnetic flux density in air gap calculated using an analytical method, then computed integrating...

This paper proposes a new method to find winding function for damper bars. The bars in salient pole synchronous machine (SPSM) are shorted together and dissimilar currents can obviously flow each of the technique seems be unable solving this problem. However, it will shown that Theory still used. Using bars, inductances computed. To demonstrate correctness proposed method, Finite Element Method (FEM) simulation has been employed.

Summary This paper presents a new high voltage gain quasi Z‐source inverter consisting of switched‐inductor unit. A coupled inductor including three windings is utilized in structure the switched way to increase effectively. In addition, configuration includes an active switch with low number components that has positive effects on and two its recycles stored energy similar clamp circuit. The converter boosts appropriately shoot‐through duty cycles transfers power continuous input current,...

This paper analytically investigates both the air gap flux density and generated power of an Axial Flux Permanent Magnet Vernier Motor (AFPMVM). The AFPMVM has same operational principle as a magnetic gear. It operates using space harmonics due to magneto-motive force (MMF) permeance. also examines effect various combinations rotor magnet pole pairs, stator slots, winding numbers on factor 3-D finite element method (3D-FEM). is observed that, although having higher ratio results in low...

In this paper, the torque control of a PM synchronous machine (PMSM) is performed using model predictive (MPC) method. The aim paper to provide method reduce ripple compared finite set-MPC (FCS-MPC). used in based on Discrete Space Vector Modulation (DSVM), which increases number non-zero vectors and reduces by adding series virtual vectors. method, total voltage from 8 38, as result reduced. Moreover, new constraint proposed added DSVM switching frequency.