نتایج جستجو برای: total harmonic distortion

تعداد نتایج: 881662  

1997
Bojan Djokic Miroslav D. Lutovac Miodrag Popovic

This paper deals with the real-time implementation of the IIR lters having linear phase. Powell and Chau have devised an e cient method for the design and realization of real-time linear phase IIR lters using suitable modi cations of the well-known time reversing technique. In their method, the input signal is divided into L-sample segments, time-reversed, and twice ltered using two IIR lter bl...

2009
M. A. A. Younis N. A. Rahim S. Mekhilef

This paper presents the design and analysis of a parallel connected inverter configuration of. The configuration consists of parallel connected three-phase dc/ac inverter. Series resistors added to the inverter output to maintain same current in each inverter of the two parallel inverters, and to reduce the circulating current in the parallel inverters to the minimum. High frequency third harmo...

1999
Chongming Qiao Keyue M. Smedley

This paper proposes an improved integration method to realize single phase power factor correction in continuous conduction mode by adding a ripple compensation network comprised of two resistors to the basic integration control circuitry. This method effectively reduces the total harmonic distortion (THD) in the input current. The proposed method is easy to implement. Theoretical analysis is g...

2013
L. J. Gunn

ELECT Many active devices exhibit gross nonlinearity, which is traditionally mitigated using negative feedback. In those cases where negative feedback is not desired, compensation for the distortion can be carried out at the postprocessing stage by inverting the transfer function of the device. A new technique is demonstrated where the inherent noise in the system is exploited to estimate the r...

2013
G. Arunkumar A. Prakash R. Subramanian

In this paper, a seven level modified cascaded multilevel inverter is proposed for industrial drive applications. Apart from selecting the conventional level inverters, Multi level inverters has been chosen for the industrial drive applications as it reduces the total harmonic distortion. The involvement of higher number of switches increases the complexity of the system, which leads to losses ...

1998
Wouter A. Serdijn Martijn Broest Jan Mulder Albert C. van der Woerd Arthur H. M. van Roermund

In this paper, the design and measurement of a 1-V translinear integrator and its application in a controllable secondorder lowpass filter for hearing instruments is presented. A semicustom version of the filter has been integrated in a standard 2m, 7-GHz, bipolar IC process and operates at voltages down to 1 V, consumes only 6 A, and has a dynamic range of 57 dB for a total harmonic distortion...

2018
Xinyu Liang

This paper presents a new predictive power-factorcorrection (PFC) controller for series-interleaved three-level boost (TLB) converters. Compared to the state-of-the-art TLB PFC controllers, where a two-cycle prediction and a detection of an operating region are necessary, the proposed controller achieves a low total harmonic distortion of the input current by using a single equation to predict ...

2015
B. M. Manjunatha D. V. Ashok Kumar M. Vijay Kumar

This paper proposes five level diode clamped Z source Inverter. The existing PWM techniques used for ZSI are restricted for two level. The two level Z Source Inverter have high harmonic distortions which effects the performance of the grid connected PV system. To improve the performance of the system the number of voltage levels in the output waveform need to be increased. This paper presents c...

2014
P. Umasankar

Abstract— This article represents the modeling and simulation of a Single Phase Matrix Converter (SPMC) fed Induction Heating (IH) system. The working principle and the control system using Fuzzy Logic Controller (FLC) are elucidated in detail. The performance of the system and their harmonic content analysis of Single Phase Matrix Converter are carried out in MATLAB/Simulink environment. Pulse...

2014
R. Kavitha Rani Thottungal

This paper explains a control strategy SHE-PWM and a closed loop control of the cascaded multilevel inverter based on the modulation index. The modulation index is taken as the feedback to the cascaded multilevel inverter, the proposed system reduces the total harmonic distortion by optimizing the angles of the inverter and the DC voltage sources applied to the cascaded inverter. The specific l...

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