This paper presents a new configuration for integrated on-board battery chargers of electric vehicles (EVs) incorporating symmetrical six-phase machines. The proposes an exclusive utilization nine-switch converter (NSC) along with the machine windings during both propulsion and charging EVs. proposed has advantage employing reduced number components in EV (on-board) station (off-board), privilege avoiding electromagnetic torque production charging/vehicle-to-grid (V2G) mode operation. During...

Power generation through wind is expected to play a major role in the world's future energy portfolio. Nevertheless, power integration remains challenging research area due special characteristics of generation. Specifically, offshore has received significant attention worldwide vast potential available. The electrical infrastructure farms thus importance. multi-terminal HVDC solution represents preferable and shown promise solving farm interconnection problems. Droop control techniques have...

Two-level voltage-source converters and half-bridge modular multilevel are among the most popular types of HVDC converters. One their serious drawbacks is vulnerable nature to dc-side faults, since freewheeling diodes act as a rectifier bridge feed dc faults. The severity faults can be limited by connecting double thyristor switches across semiconductor devices. By turning them on, ac current contribution into side eliminated dc-link will freely decay zero. main disadvantages this method...

Voltage source converter (VSC)-based high voltage DC (HVDC) transmission is considered the future of offshore power transmission. This paper aims at providing a reliable VSC-HVDC system architecture between wind farms and onshore grids. In this paper, large-capacity, low-speed flywheel energy storage (FESS) based on squirrel cage induction machine applied in parallel with grid side converter. The FESS dedicated for surge (due to flow imbalance during fault) absorption instead being...

High-voltage pulse-generators can be used effectively for bacterial decontamination in water treatment applications. Applying a pulsed electric field to the infected sample guarantees killing of harmful germs and bacteria. In this paper, modular high-voltage pulse-generator with sequential charging is proposed via underwater streamer corona discharge. The generator consists series-connected modules similar an arm multilevel converter. modules' capacitors are charged sequentially from...

Modular multilevel converters (MMCs) have become one of the most promising topologies for high-voltage dc-ac conversion. DC-side fault blocking capability MMC has prompted significant research in recent years. In this paper, a new switched capacitor submodule (SCSM) MMCs is proposed which provides operation with DC capability. addition, successful voltage balancing achieved half number sensors used existing cells. Generally, conventional sensor-based techniques require amount measurements,...

Z-source inverter (ZSI) was recently proposed as a single-stage buck-boost dc-ac power conversion topology. It augments voltage boost capability to the typical buck operation of conventional source with enhanced reliability. However, its boosting could be limited; therefore, it may not suit applications requiring high-voltage gain. To enhance capability, this paper proposes new pulsewidth modulation (PWM) technique control generation shoot-through intervals in three-phase ZSIs. The achieves...

The four-switch three-phase (FSTP) inverter has been proposed as an innovative design to reduce the cost, complexity, size, and switching losses of dc-ac conversion system. Traditional FSTP usually operates at half dc input voltage; hence, output line voltage cannot exceed this value. This paper proposes a novel for based on topology single-ended primary-inductance converter (SEPIC). provides pure sinusoidal voltages with no need filter. Compared traditional inverter, SEPIC improves...

Pulsed electric field (PEF) can be used effectively in water treatment applications by passing infected through two electrodes excited from a high voltage pulsed power supply which guarantees killing the harmful germs. In this paper, new high-voltage pulse-generator with closed loop control of its output is presented for treating via underwater streamer corona discharge. The proposed generator fed low AC source (utility mains 220 V, 50 Hz) makes it suitable domestic applications. topology...

This paper proposes a switched photovoltaic (PV) approach to enhance the extracted maximum power from PV array during partial shading conditions. The proposed system is simple and cost effective. However, it may provide lower enhancement compared other existing solutions, which makes more suitable for domestic applications. For assessing PV-based system, detailed numerical comparison between technologies has been presented same operating Simulation experimental results show possibility of...

Despite the increased interest in multiphase induction machines for safety-critical applications, machine parameter identification different sequence planes is still a challenging research point. In most available literature, effect of nonfundamental overlooked due to assumption sinusoidal winding distribution and healthy operation. However, single layer or concentric layout with an odd number phases, flux produced by cannot be ignored open-phase case. This paper proposes simple offline...

One of the main challenges in designing high-power drive systems is quality developed torque. High-torque-ripple magnitudes result serious vibration and acoustic noise problems that affect lifetime a train. Multiphase machines intrinsically offer torque with higher are also being promoted for their high fault tolerant capability when compared three-phase counterparts. During open-phase conditions, induced nonfundamental sequence current components have detrimental effect on machine...

The most recent literature on multiphase machine drives is based voltage-source converter (VSC) systems utilizing different modulation techniques. Very little attention given to the current-source converters (CSCs). Applying CSCs in high-power drive promising and can effectively solve many technical problems associated with conventional VSC-based systems. This paper proposes a space vector pulsewidth-modulation (SVPWM) scheme suitable for five-phase CSC. Generally, SVPWM-CSCs, current path...

In order to generate bipolar high-voltage (HV) pulses across certain load from HV dc (HVdc) power supply, a voltage source inverter (VSI) stage should be inserted between the and supply. meet required level, series connection of semiconductor devices employed with dynamic sharing involved devices. Modular multilevel converter (MMC) can used instead conventional two-level VSI alleviate complexity introduced by deployment series-connected The level HVdc supply rating available determine...

One of the main concerns with inverter-based distributed generation (IBDG) is its negligible fault current contribution compared to synchronous generators. IBDG hardly affects level, which shadows conventional protection schemes especially a high penetration IBDGs at power levels and/or in island operation mode. This paper proposes solution for medium voltage distribution network that allows active and adjustable without violating nonoverload nature inverters. achieved by introducing...

Pulsed electric field is a commonly used and effective disinfection method in drinking water treatment applications. In this paper, transformerless unipolar/bipolar high-voltage pulse generator presented with well-regulated pulsed output voltage for via underwater corona discharge. The proposed fed from relatively low-voltage dc supply. Then, capacitor-diode multiplier centrally dc-dc boost converter to elevate the input proper level. Finally, modular multilevel employed chop elevated into...

An interline dynamic voltage restorer (IDVR) is invariably employed in distribution systems to mitigate sag/swell problems. IDVR merely consists of several restorers (DVRs) sharing a common dc link connecting independent feeders secure electric power critical loads. While one the DVRs compensates for local sag its feeder, other replenish dc-link voltage. For normal levels, should be bypassed. Instead bypassing conditions, this paper proposes operating DVRs, if needed, improve displacement...

Direct-drive permanent magnet (PM) generators have become a strong contender in medium and large rating wind energy conversion systems as they not only provide higher efficiency annual production, but also reduce the operational maintenance cost. PM with nonoverlap single-layer windings cost-effective design variation that eases manufacturing, reduces torque ripples, enhances voltage quality, provides fault tolerant capability. The performance of such machines depends mainly on proper...

Five-phase induction machines are generally modeled using multiple dq planes or a phase variable model. This paper considers modeling five-phase voltage-behind-reactance (VBR) configuration. configuration lends itself suitable for time-domain circuit-based simulators as the MATLAB/Simulink SimPowerSystems (SPS) toolbox. The stator electrical dynamics represented in coordinates, while rotor circuit is flux linkage state and expressed reference frame. VBR model equivalent to conventional...

Modular Multilevel converters (MMC) have become one of the most promising topologies for DC-AC conversion in recent years. Capacitor voltage balancing is a vital issue proper operation MMC. Generally, conventional sensor-based techniques require significant amount measurements, 2m(N-1) sensors and 2m current are required N-level m-phase converter. In this paper, sensorless technique (self-balancing) proposed The eliminates all measurement boards used monitoring capacitor voltages arm...

Converting existing ac transmission lines to an extended multiterminal three-wire bipolar HVDC system can be considered a cost-effective way interconnect dispersed offshore wind farms onshore grids instead of building new systems. To automatically coordinate between different converters in (MTDC) system, droop control techniques have been adopted as effective means without the need for fast communications units. The design is mainly dependent on line resistances. This paper shows that...

Repetitive high pulsed electric field (PEF) is an effective method to kill microorganisms and bacteria in water treatment applications. The PEF can be generated by applying high-power electromagnetic pulse across the sample treated. There are two main types of high-voltage generators, namely, unipolar bipolar. In this paper, a full-bridge submodule-based modular generator, having ability generate bipolar pulses with different shapes from relatively low-voltage input dc supply, proposed....