It is possible to reduce leakage because high voltage and low voltage winding can be subdivided by using sandwich coil. The proposed methodology and software constitute a handy tool that is already applied successfully in a transformer manufacturing industry. Methodology for the optimum design of power transformers. Due to large variables search space ss, most optimization methods proposed in the literature for ptod are prone to find local minimum instead of the global one. Optimization of power transformer design using simulated.
The power transformer is one of the most important equipment in a power system. Abb transformers, 2015 total cost of ownership method basics. A survey of current research reveals the continued interest in application of advanced techniques for transformer design optimization. A power transformer is a technology investment that needs to be secured for decades. Inclusion of core loss selection of operating flux density to optimize total loss multiple winding design. With the fastpaced changing technologies in the power industry, new references addressing new technologies are coming to the market. Optimal design of transformer involves determination of design parameters of a power transformer when a chosen. Hence, this paper demonstrates a better and efficient solution for power transformer design using the said optimization techniques. Apr 04, 2014 issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. A 1mhz, 1kw llc converter is designed to verify the proposed method.
An optimal design methodology has been developed based on the revealed relationship. Half bridge converters are utilized in power supplies in the power range of 150 w. In 1959, williams, abetti, and mason restricted involving different mathematical optimization explained complete design of power transformers with a large. Pdf optimal analysis and design of power electronic. As a result, the proposed transformer design methodology accounts for leakage inductance requirements for optimal power. Optimal design of the power transformer with ansys maxwell for bidirectional battery charger dr. Costoptimal design of a 3phase core type transformer by. A contemporary evaluation of switching power design methods with real world applications written by a leading author renowned in his field focuses on switching power supply design, manufacture and debugging switching power supplies have relevance for contemporary applications including mobile phone chargers, laptops and pcs based on the authors successful switching power optimized design 2nd. It is used for core type distribution transformer and small power transformer for moderate and low voltages and shell type transformers. Laboratory for high power electronic systems, eth zurich, physikstrasse 3, ch8092 zurich, switzerland email. The resulting new power transformer with higher efficiency for bidirectional dcdc converter for electrical vehicle charging system is implemented in a practical design.
Designmethodologyapproach the optimization of the transformer design problem is formulated as an nlp problem, expressing the objective and constraint functions in terms of the selected independent variables. Summary the leakage inductance of power transformers, windings loss estimation and design optimisation is accomplished using of ansys maxwell software. Abstract switching circuits, operating at high frequencies, have led to considerable reductions in the size of magnetic components and power supplies. Power transformers built for reliability and efficiency. Optimal design methodology for llc resonant converter. The input to the program includes detail like distance between core centre c, thickness of core t, width of window bw, height of windowhw, connection, frequency etc besides the specification values. So, their optimal designing are of great importance.
Windings are surrounded by the limbs so cooling is batter in core than winding. The skeletons of the transformer are wound and connected using conductors to make three 1phase or one 3phase transformer. As previously stated, the design opt imization is broadly targetted. Evaluation of topologies and optimal design of a hybrid. Pdf cost optimal design of a singlephase dry power. Power transformer modelling for optimal performance. The two windings of the transformer are called high voltage winding and low voltage winding. Biela laboratory for high power electronic systems eth zurich, physikstrasse 3, ch8092 zurich, switzerland email. Fem based preliminary design optimization in case of. Optimal design of mhz llc converter for 48v bus converter application yinsongcai. Optimal design of a medium voltage high frequency transformer.
Abstract pulsed power systems often use a pulse transformerto generate high voltage pulses. Optimal choice for number of strands in a litzwire. Evaluation of topologies and optimal design of a hybrid distribution transformer j. Transformers, impedance matching and maximum power transfer. This study proposes a new design of power electronic distribution transformer pet by using an intelligent program to get an optimum hf operation, which leads to maximum efficiency. Optimal design of mediumfrequency transformers for solid. Designing optimal passive filters for transformers under. Pp 159 168 optimal design of transformer a compressive issuu. Optimal design of a high power high frequency transformer free download as pdf file. Optimal analysis and design of power electronic distribution transformer article pdf available in research journal of applied sciences, engineering and technology 79.
A transformer consists of two windings coupled through a magnetic medium. Optimal design to be offered based on customer input the task is to design a transformer that minimizes the total ownership cost using more materials reduces the losses and the running costs, but on the other hand can increase the manufacturing costs an optimizing software is used to find the lowest total ownership cost. Cost optimal design of a singlephase dry power transformer raju basak 265 exposed area of the coil 0. However, bythe use ofa reset circuit additional losses are generated. The design parameters are related to the electrical parameters of the transformer by mathematical models. A power law to model insulation thickness is combined with standard analysis of proximityeffect losses to.
View optimal design of power transformer research papers on academia. Optimal design of a furnace transformer by intelligent. Optimum design of cross section of transformer core power. In core type transformer the ratio of depth to width of core varies. In this paper, a power transformer design methodology using multiobjective evolutionary optimization is proposed.
Optimal design of the power transformer with ansys maxwell. Present paper firstly provides efficient and reliable solution for the design optimization problem with several variables and secondly, it guarantee that the obtained solution is a global optimum. Index termsdecision trees, optimum design, power transformers. Optimal design of power transformer using simulated annealing. Improved fast evolutionary ifep for program for optimum. The trend toward high power density, high operating frequency, and low profile in power converters has exposed a number of limitations in the use of conventional wirewound magnetic component structures. Optimal design of power transformer using genetic algorithm. Transformer design1 chapter 15 transformer design some more advanced design issues, not considered in previous chapter. Optimal design of mhz llc converter for 48v bus converter. Section 4 power transformer design power transformer design this section covers the design of power transformers used in buckderived topologies. In these basic configurations the peak voltage across the load is equal to the peak value of the ac. Design of highdensity transformers for highfrequency high. Optimal design of power transformer using simulated.
Pdf optimal design of the power transformer with ansys. A new type of transformers based on power electronics pet has been introduced, which realizes voltage transformation, galvanic isolation, and power quality improvements in a single device. Optimal design of power transformer using genetic algorithm abstract. Simulation analysis and comparison of optimal design parameters with those derived by conventional optimization technique. Optimal design of a medium voltage high frequency transformer with a high isolation voltage 115kv michael jaritz, jurgen biela. Three 1phase transformer requires each bank isolated. Increasing the switching frequency to shrink the passive component size is the biggest contribution towards increasing power density. Finally, the design parameters of a power transformer that can be optimized to reduce losses are considered in this project. Pdf optimal design of singlephase shelltype distribution. The reliability and efficiency of the transformer has a major impact on the total cost of transmission over a long period of time. Cost optimization by three evolutionary intelligent techniques viz. Pp 159 168 optimal design of transformer a compressive, author.
Design of three phase transformer shital patel, ee department design of dc machines and transformer 2160912 3. Optimal design of transformer involves determination of design parameters of a power transformer when a chosen objective is optimized, simultaneously satisfying a set of constraints. In addition, design considerations for core and wire selections, isolation requirements, and different transformer structures are investigated. Pdf optimal design of a 3phase core type distribution. The skeleton of the power transformer is designed with metal which is laminated by sheets.
Analysis and design of power electronic transformer based. To meet this requirement, the core loss will be checked first. Optimal design produces a graph that can show a number of comparisons. Power transformer optimal design ptod is a complex multiobjective optimization problem including numerous design variables that aim to design a transfor due to large variables search space ss, most optimization methods proposed in the literature for ptod are prone to find local minimum instead of the global one. Presentation of a n algorithm to optimal design of high. Optimization of power transformer design 195 generated by the transition mechanism. The chart on the next page shows power on the yaxis and sample size on the x axis. A performanceoriented power transformer design methodology. Antoniazzi in mainssupplied electronic systems the ac input votlage must be converted ni to a dc voltage wthi the right value and degree of stabilization. Due to market globalization, power transformer manufacturers are facing an increasingly competitive environment that mandates the adoption of design strategies yielding better performance at lower costs. Chenyao liu, jhaocyuan huang, dingoa huang, nsrrc, hsinchu, taiwan.
Optimal design and tradeoff analysis of planar transformer in high power dcdc converters abstract. Power transformer optimal design ptod using an innovative. In this paper, a power transformer design methodology using. The optimal number of the litzwire strands and their diameter are determined for minimum losses in a given transformer. In this paper simulated annealing sa is used for optimization of power transformer design. Optimal design for resonant power transformer chenyao liu, jhaocyuan huang, dingoa huang, nsrrc, hsinchu, taiwan abstract the energy and dc to dc conversion of the resonant transformer are required to achieve optimal design and working condition of the resonant region frequency. Many transformer models has been published in the literature for preliminary design optimization of power transformers 10,16.
Abstracttransformer design is primarily determined by minimizing the overall manufacturing cost, including the cost of materials and the labor cost. Inclusive of highfrequency effects william gerard hurley, senior member, ieee, werner hugo wol. Optimal design of a dc reset circuit for pulse transformers. Asystemwithout dcreset circuit is limited to bsatbrem i. However, the ever growing and extensive range of standard format.
One of the design challenges of the highdensity power converter design is to have highdensity magnetic components which are usually the most bulky parts in a converter. Magnetics design for switching power supplies lloyd h. Highlights investigation of optimal design parameters of a furnace transformer for an electric arc furnace. The risk of failure is therefore, an inevitable cost to be considered when evaluating the total cost of ownership. Analysis of high frequency effects like skin and proximity losses in the transformer windings is presented in this paper. In orderto improvethe utilization of the transformer core material usually a dc reset circuit is applied whichresults in asmallertransformervolume. Simulation analysis and comparison of optimal design parameters with those derived by. Optimal design and tradeoff analysis of planar transformer.
Optimal design of subtransmission transformer this paper deals with the design optimization of subtransmission power transformers as well as the distribution transformers since subtransmission is regarded as high voltage distribution in many unified systems. Modernizing their power transformer fleet is a sound investment for power companies. Optimal design software the optimal design for multilevel and longitudinal research is a free standalone software program for performing statistical power calculations of impact evaluation studies, particularly grouprandomized trials. Optimal design of voltage withstand test is required for verifying the. The effect of those design parameters on the transformers performance is supported by some papers related to. Optimal design of a high power high frequency transformer. Dec 23, 2016 optimal design of power transformer using genetic algorithm. Feshki farahani1, 1department of electrical engineering, ashtian branch, islamic azad university, ashtian, iran abstract high frequency transformers are used in different applications such as switching power supply. May 12, 2017 power transformer optimal design ptod is a complex multiobjective optimization problem including numerous design variables that aim to design a transformer with minimal material costs. Ashot melkonyan siemens ag, munich, germany summary the leakage inductance of power transformers, windings loss estimation and design optimisation is accomplished using of ansys maxwell software. When circular coils are required for distribution and power transformers, the square and stepped cores are used.
The pet provides a fundamentally different and more complete approach in transformer design by using power. This topology also uses two major magnetic components, a transformer and an output inductor, but in this case the transformer core is better utilized than in a forward converter. The paper presents power transformer design, using genetic algorithm ga and simulated annealing sa by minimizing total active cost, keeping in view the constraints imposed by international standards and power transformer specifications. For shell type transformer the cross section may be rectangular. Transformers, impedance matching and maximum power transfer introduction the transformer is a device that takes ac at one voltage and transforms it into another voltage. Design of three phase transformer shital patel, ee department design of dc machines and transformer 2160912 6 distribution transformer is designed for less iron loss compared to power transformer i. Optimum design of cross section of transformer core power system analysis free pdf download flux density of a core will be maintained by changing the cross sectional area of the core during its design. Figures 1 and 2 show the simplest rectifier circuits. Performance comparison of conventional, genetic algorithm. The voltage pulse results in a change of flux density jb which can be maximal 2bsat with bsatbreset for a system. William gerard hurley, senior member, ieee, werner hugo wol. This minimization, however, has to take into consideration constraints that are imposed by international specifications and customers needs. Optimal design of power transformer research papers. Dixon section 1 figure 11 transformer equivalent circuit introduction experienced switchmode power supply design ers know that smps success or failure depends heavily on the proper design and implementation of the magnetic components.
Introduction in recent years, tremendous progresses in the power semiconductor devices bring numerous capabilities to manage the energy conversion in the different parts of the power systems. Reference 12, presents a method to construct a high frequency planar transformer model with improved accuracy which is. Even a short power transformer outage may cost millions of dollars in lost revenues. The complexity of transformer design demands reliable and rigorous solution methods. Power versus sample size for a given effect, effect size versus sample size for a given desired power, with many other options. Easily share your publications and get them in front of issuus. Introduction with the development of power conversion technology, power density becomes the major challenge for frontend acdc converters 1 2 3. Optimal design of the power transformer with ansys. The design methodology for reaching costoptimality has been discussed in details by authors like ramamoorty.
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