نتایج جستجو برای: multilevel drive
تعداد نتایج: 109532 فیلتر نتایج به سال:
The Modular Multilevel Converter is a good alternative for high power, medium voltage drive applications due to its modularity and scalability. However, the control complex typically involves several highly-coupled circulating current feedback loops implemented using Single-Input Single-Output design tools. Additionally, each has many different frequency components electrical sequences increase...
In this study, a fault diagnostic system in a multi-level inverter using a MLP network is developed. Using a mathematical model, it is difficult to diagnose a Multilevel-Inverter Drive (MLID) system, because MLID system complexity has a non-linear factor and it consist of many switching devices. Therefore neural network classification is applied to fault diagnosis of MLID system. Multilayer per...
The objective of this paper is to present a multilevel inverter topology for induction motor with open-end winding. Multi level inversion is achieved by feeding an open-end winding induction motor with a two-level inverter in cascade with three auxiliary circuits from one end and a single two-level inverter from the other end of the motor. The combined inverter and auxiliary system with open-en...
Certain aspects of a computer-generated world have always been difficult to simulate. Cloth is one such example since, unlike a rigid object, it is flexible and subject to many internal and external forces which drive the fabric into a natural form. As a consequence of these difficulties, realistic simulations demand a significant computational cost, which makes parallel computing highly advant...
Asymmetrical structure is used to reduce the number of bridges and gate drive circuits and DC sources. This structure therefore provides the capability to produce higher voltages at higher speeds with low switching frequency which has inherent low switching losses and high converter efficiency. Newton Raphson (N-R) algorithm is investigated for the selective harmonic elimination (SHE) to calcul...
We apply the adaptive multilevel finite element techniques described in [20] to the nonlinear Poisson-Boltzmann equation (PBE) in the context of biomolecules. Fast and accurate numerical solution of the PBE in this setting is usually difficult to accomplish due to presence of discontinuous coefficients, delta functions, three spatial dimensions, unbounded domains, and rapid (exponential) nonlin...
This paper presents a new transformer based multilevel inverter, with a novel pulse width modulation scheme to achieve seven-level inverter output voltage. The proposed inverter switching pattern consists of three fundamental frequency sinusoidal reference signals with an offset value, and one high frequency triangular carrier signal. This switching scheme has been implemented using an 8-bit Xi...
Multilevel Inverters are emerging technology playing a vital role in power electronics, Electric drive systems and Power systems etc. Here new multilevel topology is discussed. Cascaded HBridge (CHB) 7 level inverter is designed using Simulink, finally it is simulated and inverter switching signals are controlled using FPGA controller. H-bridges are connected seriously to achieve 7 level output...
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