TY - JOUR T1 - Performance analysis of different PWM techniques on V/f-based speed control with adjustable boost voltage application for induction motors TT - Asenkron motorlar için ayarlanabilir gerilim uygulamalı V/f tabanlı hız denetiminde farklı PWM tekniklerinin performans analizi AU - Kesler, Selami PY - 2018 DA - October JF - Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi PB - Pamukkale Üniversitesi WT - DergiPark SN - 2147-5881 SP - 797 EP - 808 VL - 24 IS - 5 LA - en AB - This paperpresents a comparative study and a method to improve Volt-Hertz (V/f) basedspeed control of Induction Motors (IMs). For this purpose, Sinusoidal PulseWidth Modulation (SPWM) and space vector pulse width modulation (SVPWM)techniques are investigated and evaluated, especially from the point of theircontrol performance on the V/f-based control for three-phase IMs working atdifferent load and speed conditions. From this aspect, it is a different studyfrom the literature. Steady and transient effects of both techniques on theabove mentioned control methods are analyzed for several case studies.Afterwards, adjustable boost voltage application with modified referencecommands technique is proposed for both PWM methods in order to improvestart-up performance. All investigations for both PWM models are carried outunder the same conditions. Although SVPWM technique gives more effectiveresults in many cases, the proposed method provides noticeable improvements onSPWM-based applications from point of performance on the control method. As anovelty of this study, it is shown that, the bad performance of the controlmethod at low frequency in SPWM application, which has lower computationalburden for low cost microcontroller, can be improved by applying adjustableboost voltage along with modified references that are proportional to the DCbus current. KW - Induction motor KW - Performance analysis KW - Pulse width modulation KW - Variable speed drives KW - Volt-Hertz control N2 - Bu makale, AsenkronMotorlarının (IM veya ASM) Volt-Hertz (V/f) tabanlı hız kontrolünü iyileştirmekiçin bir yöntem ve karşılaştırmalı bir çalışma sunmaktadır. Bu amaçla,özellikle farklı yük ve hız koşullarında çalışan üç fazlı asenkron motorlarınV/f tabanlı hız kontrol performansı açısından sinüzoidal darbe genişlikmodülasyonu (SPWM) ve uzay vektör darbe genişliği modülasyonu (SVPWM)teknikleri incelenip değerlendirilmiştir. Bu bakımdan, literatürden farklı birçalışmadır. Her iki tekniğin yukarıda belirtilen kontrol yöntemi üzerindekikararlı ve geçici hal etkileri çeşitli örnek durumlar üzerinde analizedilmiştir. Daha sonra, kalkış performansını artırmak için her iki PWMyönteminde de düzeltilmiş referans komut tekniğine eşlik eden ayarlanabiliryükseltici gerilim uygulaması önerilmiştir. 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