نتایج جستجو برای: inverter control

تعداد نتایج: 1335651  

2016
S. Jaanaa Rubavathy

This paper proposes a unique topology of Class D series resonant inverter with output power control schemes for Induction Heating (IH) application. The main aim of this work is to reduce the steady state error so as to get better performance for induction heating applications under varying load conditions. The power control strategy allows the class D series resonant inverter to operate nearly ...

2013
P. DEVI KIRAN M. RAMACHANDRA RAO

In high power high voltage application BLDC motor are widely used because of higher efficiency, simple in construction, lower cost, less in maintenance and higher torque or high output power per unit volume. For driving the BLDC motor an electrical commutator (inverter) is required. PWM inverter gives good performance. In two level inverter there are problems of harmonics distortions, low elect...

2000
Fang Z. Peng Donald J. Adams

An electric bus system has been operating in the downtown area of Chattanooga, Tennessee for more than four years. The buses use traditional hard-switched IGBT inverters driving special induction motors with a speed sensor (tachometer) and two embedded fluxsensing windings to provide rotor speed and flux information to the motor controller for implementation of high performance field oriented c...

2014
Gaurav Sharma Ankita Kosti

This paper explores Switched Inductor (SL) Zsource inverter which adjusts the voltage and have application in Fuel cells (FCs) which have achieved global attention as an alternative power source for hybrid electric vehicles (HEVs). The proposed inverter uses inductor and capacitor circuit to join the source and load circuit. On comparing with the initial Z-source inverter, the explored circuit ...

2014
Jaysing Ashok Kshirsagar K. Vadirajacharya Ashok Kshirsagar

Reformations in electricity sector along with various renewable energy promotion policies has increased the importance of small grid connected photovoltaic (PV) systems utilizing single-stage single-phase inverters. To improve the performance multilevel inverter are preferred over two levels. This paper proposes a single-stage five level inverter for grid connected (PV) system. The output curre...

2004
E. G. Shivakumar K. Gopakumar

scheme proposed here makes the individual inverter A space vector PWM technique is developed based switching frequency equal to half of the motor phase on the combination of space vectors from dual inverters switching frequency. %is results in low inverter switching feeding the induction motor from both ends (open-end with reduced power circuit complexity when compared to winding without neutra...

2005
Henrik Mosskull Johann Galic Bo Wahlberg

In a companion paper (Part I), we investigated stability of induction motor drives, with resonant input filters. By using a linearized feedback model of the drive, it was shown how stability specifications could be transformed into constraints on the input admittance of the voltage source inverter. The stabilization problem then becomes a standard feedback control loop-shaping problem, where th...

This paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. The hybrid DC power sources are connected to grid using power electronic converters include DC-DC converter and grid connected voltage source inverter. The power from hybrid power sources is controlled during voltage sag by designing of control strategy for DC-DC converter....

In this paper, a multi-stage Z-source inverter with high boost factor is proposed. The proposed topology by using the combination of a power supply and Z-source networks are increased the voltage. Regarding voltage increase capability over the wide range, good resistance against electromagnetic noise and immunities against shoot through (ST), this inverter can be used widely in the photovoltaic...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی برق 1387

افزایش وابستگی زندگی مدرن امروز به تجهیزات الکتریکی و سیستم های کامپیوتری، نیاز به سیستم های تغذیه توان با قابلیت اعتماد بالا را ضروری ساخته است. این نیاز در مورد بارهای بحرانی از قبیل بیمارستان ها ، سیستم های مخابراتی، مراکز اطلاعاتی وغیره بیشتر احساس می شود، به گونه ای که قطع تغذیه چنین بارهائی مستلزم بهره گیری از سیستم های تغذیه توان بدون وقفه (ups) به عنوان واحد رزرو تغذیه کننده این بارها ا...

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