Application of multilevel inverters for higher voltage goals in industries has become more popular. In this study, new structures symmetric, asymmetric and hybrid inverter are recommended. The proposed structure is used high-voltage levels. can generate a great number output levels with minimum power electronic components such as insulated gate bipolar transistors (IGBTs) drivers. For inverter, methods determination dc sources values presented. Comparison the results various presented to...

In this article, we propose an extendable quadratic bidirectional dc-dc converter that has improved voltage transfer ratio (VTR) with the capability of redundancy and modularity for electric vehicle applications. As n modules are embedded, its VTR becomes times higher both directions currents. Furthermore, common electrical ground between input output is preserved. This a simple structure lowest rating semiconductors in family converters leading to ease control ability. The proposed...

This article proposes a bidirectional battery charger for grid to vehicle and operations of electric vehicles (EV). The dc stage the proposed converter offers quadratic buck–boost voltage gain ratio, which makes it suitable interconnecting pack unit EVs with both ac grids as home EV charger. A high-voltage low voltage, current stress switches, high values utilization factors (UF) directions are achieved. Continuous input common electrical ground preserved at dc–dc also, continuous output...

In this paper, the authors attempt to introduce a new modulation algorithm for matrix power converters, with an alternative PWM strategy, regardless of type input and output (AC or DC), also number phases, by using suitable toggling switches, such that favorable patterns are achieved (with variable amplitudes frequency). The switch functions in converter ensure switches do not short-circuit voltage sources, open-circuit current thus yielding continuous currents at terminals. Also if...

In this study, a bi-directional power flow zero-voltage switching (ZVS) electronic transformer (PET) with phase shift modulation controller (PSM) is proposed. The PET contains input full-bridge active rectifier (FBAR), DC-link inverter (FBDCI), high-frequency isolating (HFIT), cycloconverter and output filter. FBDCI switches operate under ZVS condition. addition, commutation of both FBAR are achieved. Dynamic voltage regulation obtained without utilising energy storage elements. Therefore...

To reduce the number of power electronic devices in multilevel converters, a new switched‐diode converter is proposed this study. This topology generates large levels with fewer insulated gate bipolar transistors (IGBTs), driver circuits and diodes. For recommended converter, novel method for determination dc voltage sources magnitudes presented. Also, optimal structures presented different aims including less IGBTs, circuits, diodes order to generating levels. The structure compared other...

The fundamental DC-DC boost converter has the drawbacks of low voltage gain ratio followed by discontinuous output current. May reverse recovery problem rises as a disaster for diode along with harming power switch. Also stress is significantly high in respect voltage. Therefore, new topology non-isolated proposed this paper. In achieved continuous input and output. stresses across semiconductors are all less than that Only single switch controlled PWM which leads to simplicity cost...

Summary In this paper, a basic unit for the nine‐level converter is firstly presented. Then, new developed topology multilevel proposed. This comprises several bidirectional and unidirectional switches along with dc voltage sources. order to increase number of generated levels, cascade based on series connection units studied. Due extensive nature presented converter, optimization analysis generating maximum levels minimum numbers IGBTs, drivers, sources, switches. All required mathematical...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> This paper presents a single-stage bidirectional power electronic transformer (PET) for lighting systems as three-phase ballast. The system supplies multilamp units that are controlled simultaneously by PET using pulsewidth modulation scheme. contains single-input multioutput high-frequency isolating to control the illumination of lamps well providing galvanic isolation in each unit...

Unified power flow controller (UPFC) is one of the most versatile and complex flexible AC transmission system (FACTS) devices. It emerged with a proven capability instantaneous control line parameters. This study presents an approach based on direct Lyapunov stability theory finite‐time convergence chattering‐free characteristics to improve damping oscillations using UPFC. A state‐variable strategy derived implemented tackle problem states. In suggested method, chattering phenomena...

In this paper, an improved Cascaded Multi-Level Inverter (CMLI) topology which can be "symmetric" or "asymmetric" is proposed. The produce higher number of levels using lower components. Higher leads to generation a high quality with low Total Harmonic Distortion (THD) output voltage waveform. To increase levels, two algorithms are proposed for determination magnitude dc sources, investigated and the most effective one introduced. verify operation topology, it modeled simulated in...

Bidirectional DC/DC converters are so prevalent in several applications. Regarding some applications, increasing their voltage gain ratios (VTR) quite important. So, this paper proposes a novel extendable bidirectional boost-buck converter. In converter, any isolation and coupled inductors not employed. Each stage is derived from fundamental boost/buck converter with the same switching algorithms. By embedding <tex xmlns:mml="http://www.w3.org/1998/Math/MathML"...

ABSTRACT This study proposes a new high‐voltage gain quadratic‐structured common‐ground step‐up DC‐DC converter, integrating coupled‐inductors and switched‐capacitors. configuration achieves significant voltage without necessitating either substantial duty cycle or an elevated turn ratio in the coupled‐inductors. A critical innovation is embedding of secondary windings into switched‐capacitor cell, which not only enhances but also effectively suppresses inrush current typical such cells. The...

In this paper a new structure for asymmetric multilevel converters is presented. The topology consisting of N series-connected two interconnected per phase. presented circuit an optimized converter with minimum DC voltage sources and switches. investigated can generate large number levels (odd even) without increasing the switches sources. For algorithm calculating proposed. Also complete analysis given harmonic distortion THD. proposed has higher efficiency because reduced devices which be...

A novel voltage source full-bridge DC-DC converter with phase shift modulation using a high-frequency cycloconverter is proposed. Both zero-voltage and zero-current switching (ZVZCS) commutation for active power switches operation bi-directional are obtained. Soft provided in wide range of regulation without utilising an auxiliary inductor the primary side isolating transformer. To implement this as multi-function DC–AC inverter, reference signal traced by control system to adjust output...

Multicell converters are a very interesting alternative for medium voltage and high power applications. The two most significant types of multicell based on flying capacitors capacitor its derivative stacked converters. This paper presents new configuration converter. main advantage the proposed converter, in comparison with conventional is that number required dc sources reduced from to one. progress achieved by connecting upper stack lower while frequency switches capacitors, ratings...

In this paper, a new topology of cascaded multilevel converter using reduced number insulated gate driver circuits and voltage standing on switches is proposed. The proposed results in reduction installation area cost has simplicity control system. This structure consists series connected sub-multilevel converters blocks. Three algorithms for determination dc source magnitudes have been presented, too. validity the analysis proved by experimental results.

In this paper, a novel structure for high gain single-switch buck-boost converter with continuous input and output power suitable renewable energies connected to the distribution grid is proposed illustrated. Unlike traditional buck-boost, CUK, SEPIC ZETA converter, has currents by help of inductive filters in its ports. Therefore, energy utilization. Without using any galvanic isolations or either coupled inductors only single switch low stress on, significant higher voltage compared other...

The unified power flow controller (UPFC) is a typical FACTS (flexible AC transmission systems) device that capable of the instantaneous control line parameters. This paper presents transient model and system UPFC. presented enables UPFC to following exchanges active reactive reference values, regulating DC link voltage bus voltage. scheme has fast dynamic response therefore, improves behavior after condition. simulation results demonstrate acts properly in steady states. was simulated tested...

This paper proposes a new control method for D-STATCOM (Distribution STATIC Compensator) system. The operation of this proposed enables to mitigate all types fault, intelligently (such as Single Line Ground (SLG) fault and Double Phase (DPG) three-phase fault). In paper, the 12-pulse configuration with IGBT is designed graphic based models DSTATCOM are developed using PSCAD/EMTDC electromagnetic transient simulation program. validates performance system improving distribution under fault....