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Papers by Berkan ZÖHRA

Research paper thumbnail of 3 rd International World Energy Conference

Research paper thumbnail of Experimental performance verification of radial and axial flux line start permanent magnet synchronous motors

Electrical Engineering, Jan 21, 2023

Research paper thumbnail of Design of A Novel Line Start Synchronous Motor Rotor

Electronics, Dec 26, 2018

Research paper thumbnail of Performance verification of novel rotor line start PMSM

Journal of mechatronics and artificial intelligence in engineering, Nov 5, 2021

Research paper thumbnail of The transition to efficient electric motors in Turkey and Line Start Permanent Magnet Synchronous Motors

DergiPark (Istanbul University), Dec 23, 2019

Research paper thumbnail of Design Trends for Line Start Permanent Magnet Synchronous Motors

2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT), Oct 1, 2019

Starting from the first years of the proposed period right up to the 2000s, there were commercial... more Starting from the first years of the proposed period right up to the 2000s, there were commercialization concerns of line start permanent magnet synchronous motors. This situation, which developed as a result of not developing methods to adequately explain the motor operating characteristics, and also because of the limitations associated with the non-high-performance manufacturing materials, took place widely until the 1970s. In subsequent years, the development of increasingly efficient materials, as well as the use of innovative methods, such as advanced magnetic circuit models and FEM analysis, which better reflect the performance of the motor, these motors became available for an increasing number of industries. In the past 10 years, research has paid off, and finally, line start permanent magnet synchronous motors have begun to be offered on the market as an alternative to AC induction motors. These motors, which are offered on the market with an IE4 efficiency class limits level that is currently tricky to achieve with traditional AC induction motors, are already included in the catalog of many major motor manufacturers.With this study, a detailed literature search was conducted and filtered on the development and improvement of line start permanent magnet synchronous motors. As a result of the study of numerous researches and more than 50 rotor topologies, design trends were identified that are important in the development of such motors. The development steps from the proposed years to the present have been discussed in terms of manufacturability, efficiency and performance.

Research paper thumbnail of Experimental performance verification of radial and axial flux line start permanent magnet synchronous motors

Research paper thumbnail of The transition to efficient electric motors in Turkey and Line Start Permanent Magnet Synchronous Motors

Research paper thumbnail of Aşaği – Yukari Hareketli̇ Dalga Enerji̇si̇ Konvertörü Modelleme Ve Kontrol Uygulamasi (Frog – Form 2)

Research paper thumbnail of Taşıt Kontrol Sistemleri

Research paper thumbnail of Arduino İle Sensor Uygulamalari

Research paper thumbnail of Şebeke Kalkişli Radyal Akili Sabi̇t Miknatisli Senkron Motor Tasarimi Ve Prototi̇p Üreti̇mi̇

Research paper thumbnail of Design Trends for Line Start Permanent Magnet Synchronous Motors

Starting from the first years of the proposed period right up to the 2000s, there were commercial... more Starting from the first years of the proposed period right up to the 2000s, there were commercialization concerns of line start permanent magnet synchronous motors. This situation, which developed as a result of not developing methods to adequately explain the motor operating characteristics, and also because of the limitations associated with the non-high-performance manufacturing materials, took place widely until the 1970s. In subsequent years, the development of increasingly efficient materials, as well as the use of innovative methods, such as advanced magnetic circuit models and FEM analysis, which better reflect the performance of the motor, these motors became available for an increasing number of industries. In the past 10 years, research has paid off, and finally, line start permanent magnet synchronous motors have begun to be offered on the market as an alternative to AC induction motors. These motors, which are offered on the market with an IE4 efficiency class limits le...

Research paper thumbnail of Journal of Mechatronics and Artificial Intelligence in Engineering

In this study, 5.5-kW 1500 rpm IEC-60034-30-1:2014-IE4 super premium efficiency class Line Start ... more In this study, 5.5-kW 1500 rpm IEC-60034-30-1:2014-IE4 super premium efficiency class Line Start Permanent Magnet Synchronous Motor (LS-PMSM) was presented with an innovative rotor design utilizing two different slot types have been used. The slots offered in two different geometries make a significant contribution to the motor in the form of a high starting torque thus increasing the synchronization ability. The prototype was manufactured for the optimal model obtained via analytical methods and Finite Element Software. Torque ripples that pose an important issue for permanent magnet motors were tried to be reduced by way of a skewed stator structure. In addition, motor frame and stator main dimensions were acquired from a standard IE2 induction motor design during the manufacturing of the prototype. Experimental studies for the suggested LS-PMSM topology put forth a 6 % higher efficiency in comparison with low efficiency IE2 standard induction motors with the same shaft power. Results for the starting performance, torque ripples and back-EMF were presented for the prototype motor under a constant load of 0-1.25 p.u. It was verified as a result of the study that LS-PMSMs can be used as an alternative to induction motors in pump and fan industrial applications.

Research paper thumbnail of Design of A Novel Line Start Synchronous Motor Rotor

Electronics, 2018

Line start permanent magnet synchronous motors (LS-PMSM) are preferred more and more in industria... more Line start permanent magnet synchronous motors (LS-PMSM) are preferred more and more in industrial applications, because they can start on their own and because of their high efficiency. In this study, a new LS-PMSM rotor typology is suggested, which is modelled using surface mount permanent magnets, in which two different slot types have been used together. The rotor of an asynchronous motor on the industrial market in the IE2 efficiency segment has been remodeled in the study, resulting in an increase in motor efficiency from 85% to 91.8%. A finite elements software was used for determining motor design and performance, in addition to analytical methods.

Research paper thumbnail of Türkiye’de verimli elektrik motorlarına geçiş süreci ve Şebeke Kalkışlı Sabit Mıknatıslı Senkron Motorlar

Elektrik motorlari her gelisen ulkede oldugu gibi Turkiye’de de tuketilen elektrikte buyuk paya s... more Elektrik motorlari her gelisen ulkede oldugu gibi Turkiye’de de tuketilen elektrikte buyuk paya sahiptir. Ayrica mevcut verilere gore Turkiye elektriginin %35’lik kismi sanayide yogun olarak tercih edilen asenkron motorlar tarafindan tuketilmektedir. Bu nedenle bu motorlarin daha verimli hale getirilmesi ile elektrik tuketiminde de gozle gorunur azalma saglanabilmektedir. Ayrica buyuk oranda asenkron motorlarin kullanildigi endustriyel uygulamalarda daha verimli motorlarin tercih edilmesi durumunda, firma enerji giderlerinde de tasarruf saglanabilmektedir. Gunumuzde elektrik motorlari pazarinda calisma kosullarina cevap verebilecek bircok urun mevcuttur ve bu urunler uluslararasi standartlar ile karakterize edilmektedir. Elektrik motoru ureticileri tarafindan kabul goren bu standartlar ile piyasaya sunulan elektrik motorlarinin cerceve boyutlari ve calisma sartlari gibi bircok konuda duzenleme yapilmaktadir. Yogun olarak kabul goren IEC 60034-30-1 elektrik motoru standartlarina gore...

Research paper thumbnail of Performance verification of novel rotor line start PMSM

Journal of Mechatronics and Artificial Intelligence in Engineering

Research paper thumbnail of JOURNAL OF MECHATRONICS AND ARTIFICIAL INTELLIGENCE IN ENGINEERING

Performance verification of novel rotor line start PMSM, 2021

In this study, 5.5-kW 1500 rpm IEC-60034-30-1:2014-IE4 super premium efficiency class Line Start ... more In this study, 5.5-kW 1500 rpm IEC-60034-30-1:2014-IE4 super premium efficiency class Line Start Permanent Magnet Synchronous Motor (LS-PMSM) was presented with an innovative rotor design utilizing two different slot types have been used. The slots offered in two different geometries make a significant contribution to the motor in the form of a high starting torque thus increasing the synchronization ability. The prototype was manufactured for the optimal model obtained via analytical methods and Finite Element Software. Torque ripples that pose an important issue for permanent magnet motors were tried to be reduced by way of a skewed stator structure. In addition, motor frame and stator main dimensions were acquired from a standard IE2 induction motor design during the manufacturing of the prototype. Experimental studies for the suggested LS-PMSM topology put forth a 6 % higher efficiency in comparison with low efficiency IE2 standard induction motors with the same shaft power. Results for the starting performance, torque ripples and back-EMF were presented for the prototype motor under a constant load of 0-1.25 p.u. It was verified as a result of the study that LS-PMSMs can be used as an alternative to induction motors in pump and fan industrial applications.

Research paper thumbnail of Türkiye'de verimli elektrik motorlarına geçiş süreci ve Şebeke Kalkışlı Sabit Mıknatıslı Senkron Motorlar

International Journal of Multidisciplinary Studies and Innovative Technologies , 2019

Elektrik motorları her gelişen ülkede olduğu gibi Türkiye’de de tüketilen elektrikte büyük paya s... more Elektrik motorları her gelişen ülkede olduğu gibi Türkiye’de de tüketilen elektrikte büyük paya sahiptir. Ayrıca mevcut verilere göre Türkiye elektriğinin %35’lik kısmı sanayide yoğun olarak tercih edilen asenkron motorlar tarafından tüketilmektedir. Bu nedenle bu motorların daha verimli hale getirilmesi ile elektrik tüketiminde de gözle görünür azalma sağlanabilmektedir. Ayrıca büyük oranda asenkron motorların kullanıldığı endüstriyel uygulamalarda daha verimli motorların tercih edilmesi durumunda, firma enerji giderlerinde de tasarruf sağlanabilmektedir. Günümüzde elektrik motorları pazarında çalışma koşullarına cevap verebilecek birçok ürün mevcuttur ve bu ürünler uluslararası standartlar ile karakterize edilmektedir. Elektrik motoru üreticileri tarafından kabul gören bu standartlar ile piyasaya sunulan elektrik motorlarının çerçeve boyutları ve çalışma şartları gibi birçok konuda düzenleme yapılmaktadır. Yoğun olarak kabul gören IEC 60034-30-1 elektrik motoru standartlarına göre 0.12 – 1000 kW mil gücü aralığındaki elektrik motorları verimliliklerine göre; IE1 - Standart Verimlilik, IE2 - Yüksek Verimlilik, IE3 - Premium Verimlilik ve IE4 - Süper Premium Verimlilik şeklinde sınıflandırılmaktadır. Asenkron motorlar teknolojik sınırlamalar ve malzeme limitleri neticesinde IE3 ve altı verimlikte piyasa sunulabilmektedir. Buna karşın asenkron motor rotorunun yüksek performanslı sabit mıknatıslar kullanılarak modellenmesi ile yüksek verim, güç faktörü ve güç yoğunluğu sunabilen elektrik motorları üretilebilmektedir. Rotorunda sincap kafesi ve sabit mıknatısların bir arada kullanılması neticesinde hibrit bir yapıya sahip olan bu motorlar literatürde “Şebeke Kalkışlı Sabit Mıknatıslı Senkron Motor” olarak yer almaktadır. Asenkron motorlar gibi sağlam ve az bakım gerektiren bu motorlar, rotorunda yer alan sabit mıknatıslar sayesinde IE3 üstü standartlarda verimlilik sunabilmektedir. Diğer bir yandan bu motorların üretim süreci sabit mıknatıs nedeni ile asenkron motorlara göre ile daha karmaşık ve maliyetli olmaktadır. Yapılan bu çalışma ile üretim maliyeti yüksek olan şebeke kalkışlı sabit mıknatıslı senkron motorların Türkiye pazarına giriş ücretleri ve yüksek verimli çalışma koşullarında motorun ne kadar zamanda alım maliyetini amorti edeceği tartışılmıştır. Ayrıca Türkiye’deki verimli motorlara geçiş sürecine ışık tutulmuştur.

Research paper thumbnail of Design Trends for Line Start Permanent Magnet Synchronous Motors

2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT), Oct 11, 2019

Starting from the first years of the proposed period right up to the 2000s, there were commercial... more Starting from the first years of the proposed period right up to the 2000s, there were commercialization concerns of line start permanent magnet synchronous motors. This situation, which developed as a result of not developing methods to adequately explain the motor operating characteristics, and also because of the limitations associated with the non-high-performance manufacturing materials, took place widely until the 1970s. In subsequent years, the development of increasingly efficient materials, as well as the use of innovative methods, such as advanced magnetic circuit models and FEM analysis, which better reflect the performance of the motor, these motors became available for an increasing number of industries. In the past 10 years, research has paid off, and finally, line start permanent magnet synchronous motors have begun to be offered on the market as an alternative to AC induction motors. These motors, which are offered on the market with an IE4 efficiency class limits level that is currently tricky to achieve with traditional AC induction motors, are already included in the catalog of many major motor manufacturers.With this study, a detailed literature search was conducted and filtered on the development and improvement of line start permanent magnet synchronous motors. As a result of the study of numerous researches and more than 50 rotor topologies, design trends were identified that are important in the development of such motors. The development steps from the proposed years to the present have been discussed in terms of manufacturability, efficiency and performance.

Research paper thumbnail of 3 rd International World Energy Conference

Research paper thumbnail of Experimental performance verification of radial and axial flux line start permanent magnet synchronous motors

Electrical Engineering, Jan 21, 2023

Research paper thumbnail of Design of A Novel Line Start Synchronous Motor Rotor

Electronics, Dec 26, 2018

Research paper thumbnail of Performance verification of novel rotor line start PMSM

Journal of mechatronics and artificial intelligence in engineering, Nov 5, 2021

Research paper thumbnail of The transition to efficient electric motors in Turkey and Line Start Permanent Magnet Synchronous Motors

DergiPark (Istanbul University), Dec 23, 2019

Research paper thumbnail of Design Trends for Line Start Permanent Magnet Synchronous Motors

2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT), Oct 1, 2019

Starting from the first years of the proposed period right up to the 2000s, there were commercial... more Starting from the first years of the proposed period right up to the 2000s, there were commercialization concerns of line start permanent magnet synchronous motors. This situation, which developed as a result of not developing methods to adequately explain the motor operating characteristics, and also because of the limitations associated with the non-high-performance manufacturing materials, took place widely until the 1970s. In subsequent years, the development of increasingly efficient materials, as well as the use of innovative methods, such as advanced magnetic circuit models and FEM analysis, which better reflect the performance of the motor, these motors became available for an increasing number of industries. In the past 10 years, research has paid off, and finally, line start permanent magnet synchronous motors have begun to be offered on the market as an alternative to AC induction motors. These motors, which are offered on the market with an IE4 efficiency class limits level that is currently tricky to achieve with traditional AC induction motors, are already included in the catalog of many major motor manufacturers.With this study, a detailed literature search was conducted and filtered on the development and improvement of line start permanent magnet synchronous motors. As a result of the study of numerous researches and more than 50 rotor topologies, design trends were identified that are important in the development of such motors. The development steps from the proposed years to the present have been discussed in terms of manufacturability, efficiency and performance.

Research paper thumbnail of Experimental performance verification of radial and axial flux line start permanent magnet synchronous motors

Research paper thumbnail of The transition to efficient electric motors in Turkey and Line Start Permanent Magnet Synchronous Motors

Research paper thumbnail of Aşaği – Yukari Hareketli̇ Dalga Enerji̇si̇ Konvertörü Modelleme Ve Kontrol Uygulamasi (Frog – Form 2)

Research paper thumbnail of Taşıt Kontrol Sistemleri

Research paper thumbnail of Arduino İle Sensor Uygulamalari

Research paper thumbnail of Şebeke Kalkişli Radyal Akili Sabi̇t Miknatisli Senkron Motor Tasarimi Ve Prototi̇p Üreti̇mi̇

Research paper thumbnail of Design Trends for Line Start Permanent Magnet Synchronous Motors

Starting from the first years of the proposed period right up to the 2000s, there were commercial... more Starting from the first years of the proposed period right up to the 2000s, there were commercialization concerns of line start permanent magnet synchronous motors. This situation, which developed as a result of not developing methods to adequately explain the motor operating characteristics, and also because of the limitations associated with the non-high-performance manufacturing materials, took place widely until the 1970s. In subsequent years, the development of increasingly efficient materials, as well as the use of innovative methods, such as advanced magnetic circuit models and FEM analysis, which better reflect the performance of the motor, these motors became available for an increasing number of industries. In the past 10 years, research has paid off, and finally, line start permanent magnet synchronous motors have begun to be offered on the market as an alternative to AC induction motors. These motors, which are offered on the market with an IE4 efficiency class limits le...

Research paper thumbnail of Journal of Mechatronics and Artificial Intelligence in Engineering

In this study, 5.5-kW 1500 rpm IEC-60034-30-1:2014-IE4 super premium efficiency class Line Start ... more In this study, 5.5-kW 1500 rpm IEC-60034-30-1:2014-IE4 super premium efficiency class Line Start Permanent Magnet Synchronous Motor (LS-PMSM) was presented with an innovative rotor design utilizing two different slot types have been used. The slots offered in two different geometries make a significant contribution to the motor in the form of a high starting torque thus increasing the synchronization ability. The prototype was manufactured for the optimal model obtained via analytical methods and Finite Element Software. Torque ripples that pose an important issue for permanent magnet motors were tried to be reduced by way of a skewed stator structure. In addition, motor frame and stator main dimensions were acquired from a standard IE2 induction motor design during the manufacturing of the prototype. Experimental studies for the suggested LS-PMSM topology put forth a 6 % higher efficiency in comparison with low efficiency IE2 standard induction motors with the same shaft power. Results for the starting performance, torque ripples and back-EMF were presented for the prototype motor under a constant load of 0-1.25 p.u. It was verified as a result of the study that LS-PMSMs can be used as an alternative to induction motors in pump and fan industrial applications.

Research paper thumbnail of Design of A Novel Line Start Synchronous Motor Rotor

Electronics, 2018

Line start permanent magnet synchronous motors (LS-PMSM) are preferred more and more in industria... more Line start permanent magnet synchronous motors (LS-PMSM) are preferred more and more in industrial applications, because they can start on their own and because of their high efficiency. In this study, a new LS-PMSM rotor typology is suggested, which is modelled using surface mount permanent magnets, in which two different slot types have been used together. The rotor of an asynchronous motor on the industrial market in the IE2 efficiency segment has been remodeled in the study, resulting in an increase in motor efficiency from 85% to 91.8%. A finite elements software was used for determining motor design and performance, in addition to analytical methods.

Research paper thumbnail of Türkiye’de verimli elektrik motorlarına geçiş süreci ve Şebeke Kalkışlı Sabit Mıknatıslı Senkron Motorlar

Elektrik motorlari her gelisen ulkede oldugu gibi Turkiye’de de tuketilen elektrikte buyuk paya s... more Elektrik motorlari her gelisen ulkede oldugu gibi Turkiye’de de tuketilen elektrikte buyuk paya sahiptir. Ayrica mevcut verilere gore Turkiye elektriginin %35’lik kismi sanayide yogun olarak tercih edilen asenkron motorlar tarafindan tuketilmektedir. Bu nedenle bu motorlarin daha verimli hale getirilmesi ile elektrik tuketiminde de gozle gorunur azalma saglanabilmektedir. Ayrica buyuk oranda asenkron motorlarin kullanildigi endustriyel uygulamalarda daha verimli motorlarin tercih edilmesi durumunda, firma enerji giderlerinde de tasarruf saglanabilmektedir. Gunumuzde elektrik motorlari pazarinda calisma kosullarina cevap verebilecek bircok urun mevcuttur ve bu urunler uluslararasi standartlar ile karakterize edilmektedir. Elektrik motoru ureticileri tarafindan kabul goren bu standartlar ile piyasaya sunulan elektrik motorlarinin cerceve boyutlari ve calisma sartlari gibi bircok konuda duzenleme yapilmaktadir. Yogun olarak kabul goren IEC 60034-30-1 elektrik motoru standartlarina gore...

Research paper thumbnail of Performance verification of novel rotor line start PMSM

Journal of Mechatronics and Artificial Intelligence in Engineering

Research paper thumbnail of JOURNAL OF MECHATRONICS AND ARTIFICIAL INTELLIGENCE IN ENGINEERING

Performance verification of novel rotor line start PMSM, 2021

In this study, 5.5-kW 1500 rpm IEC-60034-30-1:2014-IE4 super premium efficiency class Line Start ... more In this study, 5.5-kW 1500 rpm IEC-60034-30-1:2014-IE4 super premium efficiency class Line Start Permanent Magnet Synchronous Motor (LS-PMSM) was presented with an innovative rotor design utilizing two different slot types have been used. The slots offered in two different geometries make a significant contribution to the motor in the form of a high starting torque thus increasing the synchronization ability. The prototype was manufactured for the optimal model obtained via analytical methods and Finite Element Software. Torque ripples that pose an important issue for permanent magnet motors were tried to be reduced by way of a skewed stator structure. In addition, motor frame and stator main dimensions were acquired from a standard IE2 induction motor design during the manufacturing of the prototype. Experimental studies for the suggested LS-PMSM topology put forth a 6 % higher efficiency in comparison with low efficiency IE2 standard induction motors with the same shaft power. Results for the starting performance, torque ripples and back-EMF were presented for the prototype motor under a constant load of 0-1.25 p.u. It was verified as a result of the study that LS-PMSMs can be used as an alternative to induction motors in pump and fan industrial applications.

Research paper thumbnail of Türkiye'de verimli elektrik motorlarına geçiş süreci ve Şebeke Kalkışlı Sabit Mıknatıslı Senkron Motorlar

International Journal of Multidisciplinary Studies and Innovative Technologies , 2019

Elektrik motorları her gelişen ülkede olduğu gibi Türkiye’de de tüketilen elektrikte büyük paya s... more Elektrik motorları her gelişen ülkede olduğu gibi Türkiye’de de tüketilen elektrikte büyük paya sahiptir. Ayrıca mevcut verilere göre Türkiye elektriğinin %35’lik kısmı sanayide yoğun olarak tercih edilen asenkron motorlar tarafından tüketilmektedir. Bu nedenle bu motorların daha verimli hale getirilmesi ile elektrik tüketiminde de gözle görünür azalma sağlanabilmektedir. Ayrıca büyük oranda asenkron motorların kullanıldığı endüstriyel uygulamalarda daha verimli motorların tercih edilmesi durumunda, firma enerji giderlerinde de tasarruf sağlanabilmektedir. Günümüzde elektrik motorları pazarında çalışma koşullarına cevap verebilecek birçok ürün mevcuttur ve bu ürünler uluslararası standartlar ile karakterize edilmektedir. Elektrik motoru üreticileri tarafından kabul gören bu standartlar ile piyasaya sunulan elektrik motorlarının çerçeve boyutları ve çalışma şartları gibi birçok konuda düzenleme yapılmaktadır. Yoğun olarak kabul gören IEC 60034-30-1 elektrik motoru standartlarına göre 0.12 – 1000 kW mil gücü aralığındaki elektrik motorları verimliliklerine göre; IE1 - Standart Verimlilik, IE2 - Yüksek Verimlilik, IE3 - Premium Verimlilik ve IE4 - Süper Premium Verimlilik şeklinde sınıflandırılmaktadır. Asenkron motorlar teknolojik sınırlamalar ve malzeme limitleri neticesinde IE3 ve altı verimlikte piyasa sunulabilmektedir. Buna karşın asenkron motor rotorunun yüksek performanslı sabit mıknatıslar kullanılarak modellenmesi ile yüksek verim, güç faktörü ve güç yoğunluğu sunabilen elektrik motorları üretilebilmektedir. Rotorunda sincap kafesi ve sabit mıknatısların bir arada kullanılması neticesinde hibrit bir yapıya sahip olan bu motorlar literatürde “Şebeke Kalkışlı Sabit Mıknatıslı Senkron Motor” olarak yer almaktadır. Asenkron motorlar gibi sağlam ve az bakım gerektiren bu motorlar, rotorunda yer alan sabit mıknatıslar sayesinde IE3 üstü standartlarda verimlilik sunabilmektedir. Diğer bir yandan bu motorların üretim süreci sabit mıknatıs nedeni ile asenkron motorlara göre ile daha karmaşık ve maliyetli olmaktadır. Yapılan bu çalışma ile üretim maliyeti yüksek olan şebeke kalkışlı sabit mıknatıslı senkron motorların Türkiye pazarına giriş ücretleri ve yüksek verimli çalışma koşullarında motorun ne kadar zamanda alım maliyetini amorti edeceği tartışılmıştır. Ayrıca Türkiye’deki verimli motorlara geçiş sürecine ışık tutulmuştur.

Research paper thumbnail of Design Trends for Line Start Permanent Magnet Synchronous Motors

2019 3rd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT), Oct 11, 2019

Starting from the first years of the proposed period right up to the 2000s, there were commercial... more Starting from the first years of the proposed period right up to the 2000s, there were commercialization concerns of line start permanent magnet synchronous motors. This situation, which developed as a result of not developing methods to adequately explain the motor operating characteristics, and also because of the limitations associated with the non-high-performance manufacturing materials, took place widely until the 1970s. In subsequent years, the development of increasingly efficient materials, as well as the use of innovative methods, such as advanced magnetic circuit models and FEM analysis, which better reflect the performance of the motor, these motors became available for an increasing number of industries. In the past 10 years, research has paid off, and finally, line start permanent magnet synchronous motors have begun to be offered on the market as an alternative to AC induction motors. These motors, which are offered on the market with an IE4 efficiency class limits level that is currently tricky to achieve with traditional AC induction motors, are already included in the catalog of many major motor manufacturers.With this study, a detailed literature search was conducted and filtered on the development and improvement of line start permanent magnet synchronous motors. As a result of the study of numerous researches and more than 50 rotor topologies, design trends were identified that are important in the development of such motors. The development steps from the proposed years to the present have been discussed in terms of manufacturability, efficiency and performance.

Research paper thumbnail of AŞAĞI – YUKARI HAREKETLİ DALGA ENERJİSİ KONVERTÖRÜ MODELLEME VE KONTROL UYGULAMASI (FROG – FORM 2)

Research paper thumbnail of MICROGRID ADVISOR YAZILIMI İLE MİKRO ŞEBEKELERDE ENERJİ OPTİMİZASYONU

3rd International World Energy Conference, 2023

Son yıllarda yaşanan enerji krizlerini de göz önüne aldığımızda ülkelerin kendi enerji ihtiyacını... more Son yıllarda yaşanan enerji krizlerini de göz önüne aldığımızda ülkelerin kendi enerji ihtiyacının hiç de azımsanmayacak bir kısmını ana şebekeden bağımsız, kesintisiz ve yenilenebilir kaynaklardan karşılamayı planladıkları bir gerçektir. Bu konudaki ana motivasyonları daha ucuz enerji maliyetleri, kesintisiz enerji ve sürdürülebilirliktir. Bununla beraber tüm enerji ihtiyacımızı yenilenebilir kaynaklarından karşılayamazsak da ‘grid-tied’ (şebeke ile entegre) veya ‘Island-able’ (ada modeli) mikro şebeke yapıları ile geleneksel enerji kaynaklarımızı çeşitlendirip optimize etmek mümkündür. Daha ucuz, sürdürülebilir ve dirençli elektrik altyapısına sahip yazılım destekli mikro şebekeler ile konutların, kurumların ve hatta devletlerin enerji ihtiyaçlarının karşılanması mümkündür. Mikro şebekeler, tüm saha işlemlerinde birbiri ile iletişim kuran ve internete açılarak bulut katmanına çıkabilen bağlanabilir niteliklere sahip cihazların kullanılması ile oluşturulur. Oluşturulan şebeke dağıtılmış enerji kaynaklarının tamamından uluslararası protokoller vasıtasıyla nokta bazlı veriler toplar. Alınan tüm veriler PLC’ler gibi saha cihazlarında toplanır. Toplanan veriler buluta çıkabilen bir kontrol cihazı üzerinden bu alana özel olarak geliştirilmiş, makine öğrenmesi gibi yetkin karar algoritmalarını destekleyen ‘Akıllı Micro Şebeke Yazılım’ına aktarılır. Buradan dağıtılmış enerji kaynakları arasında sisteme entegre SCADA desteği ile operasyonel olarak yönlendirmeler, otopilot modunda çalışma modeli veya gelişmiş izleme ve tahmin yöntemi ile çıktılar takip edilir. Yazılım, üretilen ve tüketilen enerjinin herhangi bir ‘t’ anında en verimli şekilde kullanılması için binlerce senaryo arasından en doğruyu seçer ve buna göre yönlendirme yapar. Bunu yaparken tüketilen enerjinin mümkün olduğunca yenilenebilir kaynaklardan sağlanması, ucuz olarak tüketilmesi ve enerjinin sürekliliği esas alınır. Bu bağlamda kaynakların yönlendirilmesinde elektrik tarife ücretinin durumu da göz önünde bulundurulur. Ayrıca karar sürecinde veri tabanında tutulan istatiksel veriler ve hava tahmini gibi çevresel koşullara ait veriler kullanılarak geleceğe yönelik %98’in üzerinde doğruluk payı ile tahminler yapılabilir. Yazılım destekli kararlı mikro şebeke modeli ile enerji taleplerinin yüksek kaliteli, kesintisiz ve verimli bir şekilde karşılanması olanaklı hale gelmektedir. Yapılan bu çalışma modeli ile mikro-şebeke mimarileri, bileşenleri ve Schneider Electric tarafından geliştirilerek piyasa sunulan Microgrid Advisor yazılımın kullanım olanaklarının incelemesi yapılmıştır. Çalışma kapsamında bir Demo uygulama ile şebeke yönetimi yazılımının sunduğu saha çözümleri uygulamalı olarak gözlemlenmiştir.
Anahtar Kelimeler: Mikrogrid, Şebeke optimizasyonu, SCADA, Microgrid Advisor
*** Considering the energy crises experienced in recent years, it is a fact that countries plan to meet a significant part of their energy needs from uninterrupted and renewable sources independent of the main grid. Their main motivations in this regard are cheaper energy costs, uninterrupted energy and sustainability. However, even if we cannot meet all our energy needs from renewable sources, it is possible to diversify and optimize our traditional energy sources with 'grid-tied' (integrated with the grid) or 'Island-able' (island model) microgrid structures. It is possible to meet the energy needs of residences, institutions and even governments with software-supported microgrids with cheaper, sustainable and resilient electrical infrastructure. Microgrids are created by using connectable devices that communicate with each other in all field operations and can be accessed to the cloud layer by opening to the internet. The created network collects point-based data from all distributed energy resources through international protocols. All received data is collected in field devices such as PLCs. The collected data is transferred to the 'Smart Micro Grid Software', which has been developed specifically for this field and supports competent decision algorithms such as machine learning, through a control device that can go to the cloud. From here, the outputs are monitored through operational guidance, operating model in autopilot mode or advanced monitoring and forecasting method among distributed energy sources with SCADA support integrated into the system. The software selects the most correct scenario among thousands of scenarios to ensure that the energy produced and consumed is used in the most efficient way at any time 't' and directs accordingly. In doing so, the basis is to ensure that the energy consumed is sourced from renewable sources as much as possible, that it is consumed cheaply, and that the continuity of the energy is ensured. In this context, the status of the electricity tariff fee is also taken into consideration when directing resources. In addition, predictions for the future can be made with an accuracy of over 98% by using statistical data kept in the database and data on environmental conditions such as weather forecasts during the decision-making process. With the software-supported stable microgrid model, it becomes possible to meet energy demands in a high-quality, uninterrupted and efficient manner. In this study, microgrid architectures, components and usage possibilities of Microgrid Advisor software developed and marketed by Schneider Electric were examined. Within the scope of the study, field solutions offered by the network management software were observed in practice with a demo application.
Keywords: Microgrid, Grid optimization, SCADA, Microgrid Advisor