نتایج جستجو برای: current drive

تعداد نتایج: 849350  

2014
Mohammad Marufuzzaman Mamun Bin Ibne Reaz Labonnah Farzana Rahman Tae Gyu Chang

Original scientific paper A Field Programmable Gate Array (FPGA) based solution of current dq PI controller is proposed in this research, which is usually implemented in digital signal processor (DSP) based computer. The main problem in DSP based solution is the execution time, which is usually in microseconds range as well as reaching its physical limits. Therefore, completing the execution wi...

2002
Jody J. Nelson Giri Venkataramanan

Asymmetry in power circuit layout, mismatch in gate drive circuits, and lack of carefully matched device selection commonly result in dynamic and static current mismatch during parallel operation of IGBT devices. This paper is aimed at presenting a technique for actively controlling the gate drive of the IGBT to ensure appropriate current sharing under transient and steady state conditions. The...

2008
K. Sakamoto F. Albajar T. Bigelow B. Beaumont A. Chakraborty C. Darbos R. Goulding J. Graceffa T. Gassmann R. Hemsworth M. Henderson D. Rasmussen S. L. Rao G. Saibene R. Sartori

Recent progress in the R&D and the design work of plasma heating and current drive (H&CD) technologies for ITER are described. The H&CD systems are composed of 20 MW electron cyclotron (EC), 20 MW ion cyclotron (IC) and 33 MW negative ion based neutral beam (N-NB) systems, and design and R&D work continues for plasma commissioning. Significant progress in R&D during the preceding two years has ...

2006
B. N. Singh Bhim Singh B. P. Singh

Ahslract-The paper presents the performance analysis of a vector controlled cage induction motor drive. The drive is fed from a current controlled converterinverter system. The switching technique being used in control of the converter as well as inverter is PWM current control. Closed loop control of the cage induction motor utilizes fuzzy PID speed controller. The advantages offered by the cu...

This paper presents a new adaptive Sliding-Mode flux observer for speed sensorless and rotor flux control of three-phase induction motor (IM) drives. The motor drive is supplied by a three-level space vector modulation (SVM) inverter. Considering the three-phase IM Equations in a stator stationary two axis reference frame, using the partial feedback linearization control and Sliding-Mode (SM) c...

In this paper, a novel stator current based Model Reference Adaptive System (MRAS) estimator for speed estimation in the speed-sensorless vector controlled induction motor drives is presented. In the proposed MRAS estimator, measured stator current of the induction motor is considered as a reference model. The estimated stator current is produced in an adjustable model to compare with the measu...

2013
M. Divandari

This paper presents a simple and novel procedure for acoustic noise reduction in Switched Reluctance Motors (SRMs) drive. The main sources of acoustic noise in a SRM are the radial magnetic force and torque ripple. To investigate the radial force, an analytical relationship between motor designs and drive parameters is required. Thus, in this method two mathematical methods for calculation of r...

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