Power density of power electronic converters in different applications has roughly doubled every 10 years since 1970. Behind this trajectory was the continuous advancement semiconductor device technology allowing an increase converter switching frequencies by a factor decade. However, today's cooling concepts, and passive components wire bond interconnection technologies could be major barriers for continuation trend. For identifying quantifying such technological paper investigates volume...

Model-predictive control (MPC) has emerged as a promising method in power electronics, particularly for multiobjective problems such multilevel inverter (MLI) applications. Over the past two decades, improving performance of MPC and tackling its technical challenges, computational load, modeling accuracy, cost function design, weighting factor selection, have attracted great interest electronics. This article aims to discuss current state strategies MLI applications, describing significance...

A passive 12-pulse rectifier system, a two-level, and three-level active three-phase pulsewidth-modulation (PWM) system are analyzed for supplying the dc-voltage link of 5-kW variable-speed hydraulic pump drive an electro-hydrostatic actuator to be employed in future More Electric Aircraft. Weight, volume, efficiency concepts compared input phase voltage range 98-132 V frequency 400-800 Hz. The shows advantages concerning efficiency, complexity but is characterized by high weight....

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Novel symmetric hybrid multilevel topologies are introduced for both single- and three-phase medium-voltage high-power systems. The topology conception is presented in detail, where a three-level switching cell with low component count, its modulation pattern give the origin of proposed converters. Voltage sharing output-voltage distortion achieved. theoretical frequency spectra derived....

Two new planar integrated electromagnetic interference (EMI) filter structures that reduce the volume and are based on standard printed circuit board (PCB) process technology presented in this paper. First, a passive EMI is presented, which results reduction of 24% compared to discrete solution. However, requires ferrite core for common-mode inductor. In order eliminate further (-40% versus filter), structure combined with an active filtering circuit. The transfer function, volume, losses...

Novel simple indirect control concepts for an active power filter (APF) application are proposed here. The exemplarily presented to a modified APF structure. main advantage over other strategies is the achieved excellent simplicity-to-performance ratio. based on concept of virtual impedance emulation provide high factor in system. To validate operating principle, single-phase low-power prototype has been built and experimentally tested. This operates at remarkably low switching frequency 5...

The digital control of a three-phase three-switch buck-type rectifier system is analyzed in this paper. Three main sources time delays the loop can be identified for implementation on signal processor (DSP): 1) delay due to sampling quantities; 2) one calculation DSP; and 3) sample-and-hold function pulsewidth modulator. Using as an example, influence stability inner current discussed, two prediction methods time-delay compensation, i.e., linear Smith prediction, are comparatively evaluated....

This paper presents a comprehensive physical characterization and modeling of the three-phase common-mode (CM) inductors along with equivalent circuits that are relevant for their design. Modeling issues treated sparsely in previous literature explained this paper, novel insightful aspects presented. The calculation leakage inductance is reviewed, magnetic core saturation issues, new expression flux path derived. influence material characteristics on performance component discussed, method...

Future active distribution networks appear as a solution to the energy challenges. In this context, dc systems show potential for reducing losses and electronic equipment costs. Power electronics is main enabler initiative strong research efforts are ongoing in order find solutions evaluate benefits requirements power converters be applied systems. There evidence that bipolar advantageous due higher reliability increased transmission capability. such network, currents typically unbalanced...

A novel three-phase hybrid multilevel converter is proposed for medium-voltage applications. The employs a conventional voltage source inverter (VSI) linking series connected half-bridge modules at each phase. With the connection, large portion of energy can be processed by VSI employing single multi-pulse rectifier, while smaller power shares are within modules. Thus, requirements galvanically insulated dc sources reduced. Modularity naturally achieved. modulation scheme four-level version...

For a three-phase buck-type pulsewidth modulation rectifier input stage of high-power telecommunications power supply module, differential-mode (DM) electromagnetic compatibility (EMC) filter is designed for compliance to CISPR 22 Class B in the frequency range 150 kHz-30 MHz. The design based on harmonic analysis current and mathematical model measurement procedure including line impedance stabilization network (LISN) test receiver. Guidelines successful are given, components 5-kW prototype...

Silicon carbide (SiC) power semiconductor devices are capable of being operated at higher voltages, frequencies and temperatures than silicon devices. These SiC device capabilities will provide the electronics designer with new possibilities to produce compact designs. Presently JFET is only controlled turn off/on that close commercialization available as restricted samples. However a normally-on requires negative gate voltage off. In order correctly design driver one must understand...

Electromagnetic compatibility (EMC) filters are typically included in offline power converters, controlling electromagnetic emissions, but adding volume to electronic systems. During the last decades, one of main objectives electronics industry has been increase density. Thus, it is reasonable analyze how affect density values, imposing limits or ldquobarriersrdquo it. The impact EMC on overall three-phase pulsewidth modulation (PWM) converters studied here for range 5-10 kW. An analytical...

This paper presents new three-level unidirectional single-phase PFC rectifier topologies well suited for applications targeting high efficiency and/or power density. The characteristics of a selected novel topology including its principles operation, modulation strategy, feedback control scheme, and circuit design related analysis are presented. Finally, 220-V/3-kW laboratory prototype is constructed used in order to verify the converter, which include remarkably low switching losses single...

Multilevel converters (MLCs) are widely recognized for their exceptional benefits and have emerged as the preferred choice medium- high-power/voltage applications. Their usage has also been extended to low-power applications overcome issues associated with high switching frequencies electromagnetic interference (EMI) commonly encountered in two-level converters. Common dc-link MLCs received particular attention industry due ability eliminate need bulky inefficient transformers rectifiers,...

Power density of power electronic converters has roughly doubled every 10 years since 1970. Behind this trajectory is the continuous advancement semiconductor devices, which increased converter switching frequencies by a factor decade. However, today's cooling concepts and passive components are major barriers for continuation trend. To identify such technological barriers, paper investigates volume system as function frequency determines that minimizes total volume. A limit 28kW/dm3 at...

Almost two decades of research on unidirectional three-phase multilevel boost-type pulsewidth modulation (PWM) rectifiers have shown the benefits employing this technology to comply with power quality standards while assuring high efficiency and low volume weight. However, topologies directly derived from conventional three-level bidirectional converters, such as neutral point clamped (NPC), flying capacitor cascaded H-bridge converters not been properly analyzed. This letter introduces some...

This paper presents a study and practical implementation of an active filter employing high-frequency (HF) power amplifier passive-filter components to be connected the ac lines in order mitigate common-mode conducted emissions three-phase pulsewidth modulation converter systems. The topology is chosen from different possibilities listed literature survey studied regarding issues, where requirements for HF applied filtering are derived. Special attention put on stability analysis challenges...

Model-predictive control is a constrained optimization method with superior performance than linear methods for multivariable and multiobjective of power converters. Nonetheless, its limited by model uncertainties measurement noise. This study tackles this challenge proposing new hybrid parallel-cascade extended state observer (PC-ESO) two key advantages: 1) higher disturbance rejection the conventional ESO cascade (CESO) at low bandwidth 2) better noise suppression ESO. PC-ESO's time-domain...

This paper presents a microcontroller-controlled closed-loop fluxgate current sensor utilizing digital proportional–integral–derivative (PID) control with single-neuron-based self-pre-optimization algorithm. The PID controller within the microcontroller (MCU) regulates drive circuit to generate feedback in winding based on zero-flux principle system. is proportional measured external current, thereby achieving magnetic compensation. Although parameters can be determined using heuristic...

This paper presents the study of a dc-dc buck converter with three-level clamping (buck-buck), zero-voltage switching (ZVS), active clamping, and constant-frequency pulsewidth modulation (PWM). Other ZVS topologies that employ cells are introduced, their steady-state dc gain is analyzed. analysis shows buck-buck has characteristics warrant more detailed study. A feature common to all introduced theoretical reduction voltage stresses across semiconductors 50% corresponding two-level...

The configuration of power converters in future bipolar dc active distribution networks influences the electrical functions such and their overall conversion efficiency. In this context, dc-dc that are employed to balance feeder voltages and/or its transmitted powers key elements systems. This work addresses different converter topologies can be implement networks. semiconductor efforts losses for each topology evaluated able perform discussed aiming compare devices. Furthermore, application...