نتایج جستجو برای: تکنیک z source

تعداد نتایج: 588316  

2015
A. Shanmugapriya M. Ishwarya Niranjana G. Jagadeeswaran

The Transformer based Z-Source inverter is an enhanced series inductance Z-Source impedance network. This proposed inverter is used to combine the main circuit and the power source. This configuration delivers a strong boost capacity to overcome the barriers of the series inductance Z-source inverter. Further, with the usage of low voltage capacitors and the transformer, the capacitor voltage s...

Journal: : 2022

نخستین گام در راستای تحلیل و ارزیابی ریسک‌های زنجیره تأمین شناسایی این ریسک‌ها است. روش‌های مرسوم بر اساس فیلترهای دستی یا خودکار داده‌­محور ارائه شده فیلتر به‌­دلیل محدودیت‌های نمونه‌گیری دارای مشکلات اعتبارسنجی هستند از طرف دیگر مبتنی داده، داده‌های ریسک که پیچیده مبهم هستند، عملکرد ضعیفی دارند. برای پرکرده خلل پژوهشی، پژوهش، چارچوبی تعاملی بین تحلیل‌­گر ماشین حجم وسیعی حوزه مواد غذایی با است...

2013
E. Rajendran Dr. C. Kumar R. Rajesh kanna

Wind energy is a leader area of application for variable-speed generators operating on the constant grid frequency. This paper depicts the power quality enhancement in wind power system using permanent magnet synchronous generator (PMSG) and Quasi Z-source Inverter. The PMSG is connected to the power network by means of a quasi z-source inverter (qZSI). The PMSG are used by these technologies d...

2015
Xu Jin Li Lin Sun Yuwen

Z-source inverter takes advantage of a distinctive impedance source network and modulation method of shootthrough vector, and achieves the function of buck/boost DC AC inverter in the single stage system at the same time, which is suitable for grid-connected PV systems with large input voltage variations. The purpose of this study is to draw a unified method of shoot-through vector and grid inv...

2013
N. Usha M.Vijaya Kumar

This paper presents the modeling and simulation results of Z-Source Inverter based Static Compensator (STATCOM).The thirty bus system with and without STATCOM are modeled and simulated using the MATLAB software. The present work proposes Z-Source Inverter for the control of reactive power. Z-Source inverter would ensure a constant DC voltage across the DC link during the process of voltage. The...

2014
Qianfan Zhang Shuai Dong Ping Xue Chaowei Zhou ShuKang Cheng

A novel modified space vector pulse width modulation (MSVPWM) strategy for Z-Source inverter is presented. By rearranging the position of shoot-through states, the frequency of inductor current ripple is kept constant. Compared with existing MSVPWM strategies, the proposed approach can reduce the maximum inductor current ripple. So the volume of Z-source network inductor can be designed smaller...

2014
Saswati Swapna Dash Byamakesh Nayak Subrat Kumar

Abstract—This paper presents an overall study of Feedback Control of Z-Source Converter Fed Separately excited DC motor with centrifugal Pump Set. Z-source converter can be used for both voltage buck and boost mode using LC impedance network. In this paper the dynamic modeling of Z-source with motor load and centrifugal pump set is carried out with new findings. The compensators for speed feedb...

2003
A. P. Smale J. Homan E. Kuulkers

We present results from four Rossi X-ray Timing Explorer (RXTE) observations of the bright low mass X-ray binary LMC X–2. During these observations, which span a year and include over 160 hrs of data, the source exhibits clear evolution through three branches on its hardness-intensity and color-color diagrams, consistent with the flaring, normal, and horizontal branches (FB, NB, HB) of a Z-sour...

در این پژوهش اکسیدگرافن (GO) با نانوذرات Fe2O3 به نسبت حجمی 1 به 10 با استفاده از التراسونیک پروبدار مخلوط شد. جذب غیرخطی GO، نانوذرات Fe2O3 و مخلوط GO-Fe2O3 با استفاده از تکنیک جاروب-z روزنه باز مورد بررسی قرار گرفت. همچنین محدودکنندگی نوری این مواد بررسی شد. مشاهده شد که جذب غیرخطی و محدودکنندگی نوری اکسیدگرافن در اثر مخلوط شدن با نانوذرات Fe2O3 تقویت شده است. منبع نوری استفاده شده در تمامی آ...

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