Top PDF Coupled-Inductor Magnetics in Power Electronics

Coupled-Inductor Magnetics in Power Electronics

Coupled-Inductor Magnetics in Power Electronics

196 14.2 MULTIPLE OUTPUT BUCK TYPE CONVERTERS WITHOUT COUPLED-INDUCTORS Since a multiple output buck type converter is equivalent to separate converters driven by the same duty ratio, th[r]

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High gain DC-DC converter with dual coupled inductor using microcontroller

High gain DC-DC converter with dual coupled inductor using microcontroller

strength of current in its field windings. Small DC motors are used in tools, toys, andappliances. The universal motor can operate on direct current but is a lightweight motor used for portable power tools and appliances. Larger DC motors are used in propulsion of electric vehicles, elevator and hoists, or in drives for steel rolling mills. The advent of power electronics has made replacement of DC motors with AC motors possible in many applications.

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Coupled Inductor Based SIMO Interleaved Step-down Converter

Coupled Inductor Based SIMO Interleaved Step-down Converter

In addition to paralleling the converters, the interleaving topology can achieve several benefits. Interleaved converters have simple structure and low control complexity. So it can use in applications where, non-isolation and high output current with low ripples are required. Interleaving topology connects one or more converters in parallel to share the power flow between the conversion chains. The main advantage of this topology is reduction in size, weight and volume of inductors and capacitors. And also it can achieve significant reduction of current and voltage ripples. In this proposed converter higher efficiency is realized by splitting the output current into different paths, substantially reducing losses and inductor AC losses in the field of power electronics.
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High-Gain Soft Switching Bidirectional Converter with Coupled Inductor

High-Gain Soft Switching Bidirectional Converter with Coupled Inductor

coordination control schemes among various converters have been proposed to harness maximum power from renewable power sources, to proper power transfer between ac and dc loads, and to maintain the stable operation of both ac and dc grids under variable supply and demand conditions. The advanced power electronics and control technologies used in this paper will make a future power grid much smarter.

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Simulation of High Boost Converter for Continuous and Discontinuous Mode of Operation with Coupled Inductor

Simulation of High Boost Converter for Continuous and Discontinuous Mode of Operation with Coupled Inductor

Er.Irfan Khan belongs to District Morena of MP. He received is BE Degree from Priyatam Institute of technology and management Indore affiliated to RGPV Bhopal in 2012.He obtained his ME in Electrical Engineering (Power system) From UIT,RGPV Bhopal MP India in 2015.He is Having 1.8 Year experience in Teaching. his field of interest includes Network Analysis , Machine ,Power system and Power Electronics.

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High Power Medium Frequency Magnetics for Power Electronics Applications.

High Power Medium Frequency Magnetics for Power Electronics Applications.

For the medium voltage solid state transformer, a three phase transformer provides the additional smoothing to transformer current and enables reduced dv/dt across the transformer input, [3]. The transformers are made with nanocrystalline material due to its low loss and high magnetizing inductance. The exact structure and design was outsourced to a professional company so the construction details are not clear. A provided equivalent model showing a three limb design is mentioned. Given the material, it is safe to assume it is some form of magnetic ribbon. However, it is known that the transformer has very low leakage inductance and requires an external inductor to meet the desired leakage for the dual active bridge. It also highlights the need for common mode chokes for blocking noise. Again, this is an ideal application space for ribbon wound cores. Finally, the authors demonstrate an auxiliary transformer in series with the original DAB. This auxiliary transformer is used to inject reactive power and enable an extension of the ZVS range. Again, in [4], magnetic ribbon cores are shown to have many design benefits. This author uses amorphous ribbon. In this work, the author uses a five limb core design to accommodate the third harmonic in a three phase transformer. In [5], the author presents a three phase axial transformer where the outer core is a magnetic ribbon nanocrystalline. This design combines the advantage of five limb and axial transformers to allow zero sequence, triplin harmonics, without nonidealities such as asymmetrical inductances.
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Wireless Power Transmission for Portable Electronics

Wireless Power Transmission for Portable Electronics

A senior design project group at Illinois has completed a project entitled “Wireless Power Adapter for Rechargeable Devices” [4], which was almost a year ahead of the MIT group. In the project, the group successfully demonstrated that a cell phone can be wirelessly charged. A wireless power receiver is developed which is capable of charging from either a Qi or a PMA or a proprietary resonant charger operating at 6.78 MHz power is converted though a single power path with no switches in the ac network. The overall size of the receiver is compatible with mobile phone requirements and comparable to commercial Qi solutions on the market today. It is fully self-powered, allowing charging from the dead- battery condition with no modifications to the mobile phone design. The circuits such as clock recovery circuit and buck regulator circuit makes these systems bulky and complex.
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Time of Single Stage Boost Inverter with Coupled Inductor Fed by a Fuel Cell

Time of Single Stage Boost Inverter with Coupled Inductor Fed by a Fuel Cell

To describe the operating principle and characteristics, this paper focuses on one application example of the single- stage boost inverter: a single-stage boost inverter for fuel cell. Fuel cells produce a voltage that changes widely depending on current drawn from the stacks. For fuel-cell vehicles and distributed power generation, a boost dc–dc converter is required because the voltage source inverter cannot produce an ac voltage that is greater than the dc voltage. Single stages boost inverter shown in Fig.1can used for fuel-cell applications, which can directly produce an ac voltage greater and less than the fuel-cell voltage with single stage operation.
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Study of Power Electronics Devices

Study of Power Electronics Devices

Converter grade or Phase Control thyristors These devices are the work horses of the Power Electronics. They are turned off by natural (line) commutation and are reverse biased slightly for a few milliseconds following to a conduction period. No fast switching feature is desired of these devices. They are available at voltage ratings in excess of 5 KV starting from about 50 V and current ratings of about 5 KA. The largest converters for HVDC transmission are built with series-parallel combination of these devices. Conduction voltages are device voltage rating relient and range between 1.5 V (600V) to about 3.0 V (+5 KV). These devices are not suitable for any 'forced-commutated' circuit requiring unwieldy large commutation components. The dynamic di/dt and dv/dt availabilities of the SCR have largely improved over the years borrowing emitter shorting and other techniques adopted for the faster variety. The requirement for hard gate drives and di/dt limting inductors have been removed in the process.
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Power Supplies in Medical Electronics

Power Supplies in Medical Electronics

There can be few more critical applications for power supplies in electronic equipment than in the field of medical electronics. Medical equipment will often have lives dependent upon its reliable operation. Power supplies must not only deliver the specified electrical performance but must also meet stringent specifications with respect to isolation in order that patients and medical staff are protected from the risk of electric shock. EMC is a critical issue too, both in terms of immunity and emissions. As a result, the design of power supplies for use in the medical industry is driven as much by legislation as it is by the technical requirements of powering the end equipment. System designers therefore need an understanding of this legislation, and of the markets into which their products will be sold if power solutions are not to be over-specified, over-engineered and excessively expensive as a result of building in too much safety margin when it comes to meeting legislative requirements.
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Coupled 
		Inductor Based  DC DC Converter for High Step Up Application

Coupled Inductor Based  DC DC Converter for High Step Up Application

Though this converter provides a non-pulsating current by using an auto transformer, duty ratio is limited by 0.5 and not suitable for non-linear loads (wuhua Li, Weichen Li, Xin Xiang., 2014).Here voltage stress of the active switch is reduced thereby the conversion efficiency is improved. This converter requires a multi winding transformer which makes the circuit design complex (Tsorng-Juu Liang, Jian-Hsieng Lee., 2013). This converter avoids extremely narrow turn off period, ripples and switching losses are eliminated by ZVS technique. It uses two coupled inductors which makes the circuit complex (S.V. Araújo, R.P.T. Bascopé., 2010). In this converter no additional magnetic components used, switching losses are minimized by adopting a regenerative snubber circuit. As the circuit uses more switches controlling is complex (S.K. Changchien, T.J Liang., 2010).
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IMPLEMENTATION OF BUCK  BOOST CONVERTER WITH COUPLED INDUCTOR FOR PHOTO-VOLTAIC SYSTEM

IMPLEMENTATION OF BUCK BOOST CONVERTER WITH COUPLED INDUCTOR FOR PHOTO-VOLTAIC SYSTEM

The solar energy is a very interesting alternative on supplement the electrical system generation. In this paper, a photovoltaic based system is obtained from a boost cascaded with a buck converter along with Coupled inductor. Due to its novel operating modes, high efficiency can be achieved because there is only one switch operating

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High step up interleaved dc dc converter with coupled inductor

High step up interleaved dc dc converter with coupled inductor

efficiency, high-voltage step-up dc converters are required as an interface between the available low voltage sources and the output loads, which are operated at much higher voltages. Examples of such applications are as follows. Different distributed energy storage components such as batteries, fuel cells, and ultracapacitors are used in the power trains of hybrid electric vehicles (HEV), electric vehicles (EV), and fuel cell vehicles sent power train architectures of these vehicles, the voltage levels of the energy storage elements are usually low, whereas the motors of the vehicles are driven at [4]. Next, the telecom and the dard batteries, with low up power source [5], [6]. In such end converter with dual inputs is dc converter, used in this case, is required to input voltage of the batteries to the high voltage of the dc bus. Another example is the automotive headlamps,
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Coupled Inductor based Interleaved Boost Converter for Enhanced Time Response

Coupled Inductor based Interleaved Boost Converter for Enhanced Time Response

The key factors for renewable energy power conversion systems in industrial applications are Efficiency, power quality, and reliability. Du [3] suggested a novel scheme to improve performances of high-voltage large-capacity photovoltaic power stations. The power conversion of the photovoltaic system is divided into two stages, i.e. DC/DC power conversion and DC/AC power conversion. In DC/DC stage, many power units are connected in parallel, each one of which includes a photovoltaic array and a non-isolated DC/DC converter. The DC/AC power conversion is equivalent to a voltage source in series with a current source. A family of a single-switch three-diode DC-DC Pulse Width Modulated (PWM) converters operating at a constant frequency and a constant duty cycle is presented by Ismail[4]. It’s described that the converters are different from the conventional DC-DC step-up converters, and they possess higher voltage gain with small output voltage ripples.
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uCube: control platform for power electronics

uCube: control platform for power electronics

de-rating). The isolated CAN bus transceiver is instead based on the Analog Devices ADM3053BRWZ IC, with 2.5 kVrms isolation. The FO-PSU-COM expansion board is also equipped with the circuitry required to drive up to 24 fibre optics based channels, allowing for the flexibility to configure them as inputs or outputs and to drive different baud rates capable transceiver by simply replacing one component in the circuit. Visual feedback of the fibre optics status is provide as well for quick reference by means of buffered LEDs. Additionally, the board hosts two fast response dc-dc converter to power the FPGA internal banks, properly sequenced to avoid damages to the Microzed board and high in-rush currents at star-tup. The overall aspect of the FO-PSU-COM expansion board is depicted in Fig. 2a
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ASSORTED TRENDS IN POWER ELECTRONICS

ASSORTED TRENDS IN POWER ELECTRONICS

Power electronics is widely used in many major industrial applications, power supply, battery management system, smart grid etc. Huge demand emerges in the major industrial applications for power , electronics expertise, which requires the theory of power electronics and the real industrial needs to be combined tightly. Most renewable energy resources tend to be geographical dependent and clustered in certain areas due to availability of natural resources. This paper illustrates basic history of power electronics including various trends in this industry with its certain prime applications.
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Development Of Power Electronics Learning Software

Development Of Power Electronics Learning Software

Power electronics subject is usually taught theoretically, which make it difficult and time consuming to be understood by the student. On the other hands, one of the main difficulties in learning process mainly in three phase circuit is to clearly represent the waveform of the voltages and currents. Because of this, the students spend long time in task that directly not related with the learning of the circuit [2].

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Power Electronics Converters and Wind Turbine

Power Electronics Converters and Wind Turbine

Another important concept which is popular for the new developing wind turbines is shown in Fig.2 In this a full-scale power converter is used to interconnect the power grid and stator windings of the generator, there for all the generated power from the wind turbine can be regulated. The asynchronous generator, wound rotor SG (WRSG) or permanent magnet SG (PMSG) can be reported used in this topology. The elimination of slip rings, simplicity, no gearbox, full power and speed controllability as well as better grid support are the chief advantages compared with the DFIG-based concept. The more complex and expensive power electronic components plus the higher power losses in the converter are the main disadvantages for this concept As the converter used in this concept needs to carry all the generated power by wind turbines, the 2L-BTB converter topology at this power level(up to 10MW) may suffer from large switching loss and many devices may need to be connected in parallel and the cabling in case of low voltage level can be a great design/physical challenge. Therefore, it becomes very difficult for a single 2L-BTB topology to achieve appreciable good performance for the full-scale wind power converter, even though having the low cost. To handle the growing power with the exiting 2L-BTB technology, some multicell converter configurations are introduced (i.e., parallel/series connection of 2L-BTB converter cells) for achieving higher voltage and power level, multilevel converters are becoming more popular in the full-scale converter based technologies. The three-level neutral point diode clamped (3L-NPC) topology is one of the most commercialized and popular multilevel topologies on the market. Similar to the 2L-BTB, it is usually configured as a BTB structure in the wind power application. The 3L-BTB converters gives one more output voltage level and less dv/dt stress compared with the 2L-BTB, thus it is possible to convert the power at medium voltage with lower current, less
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The 2018 GaN Power Electronics Roadmap

The 2018 GaN Power Electronics Roadmap

Status. Since the irst conirmation of a 2DEG at the AlGaN/ GaN interface in 1992 and the irst availability of GaN-on- SiC radio frequency power transistors in 1998, nitride semi- conductor hetero structure electron devices now constitute a hundred million dollar market for RF power. As regards power conversion applications, GaN-on-Si high voltage power tran- sistors have been in development stage for the past decade with initial focus on depletion mode devices, due to the inher- ent nature of the 2DEG. However, most power electronic applications demand for enhancement mode devices. The irst high voltage solution released to market in 2015 by Trans- Phorm [138] is based on a cascode coniguration of a low voltage Si-MOSFET in series connection with a high voltage GaN MIS-HEMT to solve that issue. Following the progress of enhancement mode devices based on a p doped GaN gate module for low voltage GaN power transistors from EPC [139], we now see the irst fully industrial qualiied 600  V true enhancement mode (E-mode) GaN power transistors on the market from Panasonic and Inineon [140, 141]. These E-mode GaN power transistors are based on a fully recessed gate module with subsequent regrowth of a second AlGaN bar- rier with pGaN (see igure 31) on top for an excellent control of the threshold voltage independent of the drift layer carrier density [142]. pGaN is also used at the drain region as drain extension which improves the dynamic on state resistance to well below 10% even at high temperatures of 150 °C and at a full rated drain voltage of 600 V down with delay times as short as few hundreds of ns from blocking mode to settled on state resistance measurement. At the same time, this drain sided pGaN region (see igure 31) also improves the robust- ness of the device to the required levels for hard switching applications [140]. The devices are offered in surface mount device packages allowing for designs with low loop induc- tances including top side cooled variants for enabling 3 kW converters without need for paralleled devices (see igure 31). Recently, it has been demonstrated that the gate module even allows for a >10 µs short circuit robustness at full bus volt- age of 400 V when driven properly [143]. The technology has been implemented in a volume silicon power fab with a very high degree of equipment sharing with standard silicon pro- cesses to achieve economy of scale.
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Design & Development of Single Phase Multilevel Inverter (MLI) Using Coupled Inductor

Design & Development of Single Phase Multilevel Inverter (MLI) Using Coupled Inductor

ABSTRACT: In this paper, a novel single-phase 7 level inverter is proposed using coupled inductors. This inverter can output seven level voltages with only one DC source. Multilevel inverters with coupled inductors need only one source without input capacitors. For the inverter with coupled inductor, three limbs coupled inductors is the most desirable one; however, coupled inductor with high inductance value is not preferred. PWM control technique at 15 KHz switching frequency is generated using TMS320F28069 DSP controller. Simulation is carried out for a 5 KVA single phase inverter to check for 7 level output voltage and filter consideration in order to generate sine wave.12 switches are required to generate 7-level output. Finally, a prototype of 7-level inverter with 400 V input and 230 Vrms/5KW output is implemented.
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