AC Distribution Articles & Analysis

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By WOW Electricals

Replacing a centralized electrical distribution system with a distributed power architecture sets up a facility to handle unexpected demand spikes. The Covid-19 pandemic has radically changed the way people are using the digital infrastructure. The stay-at-home advisories and social distancing measures have increased the demand for a reliable internet speed. Whole industries have moved vast ...

By AKCP

Currently, many aircraft systems rely on hydraulic, pneumatic, and other mechanical forms of systems, though this trend is currently changing as newer technological capabilities progress. With the advancing technologies and benefits of the aircraft electrical system, aircraft design is shifting to favor electronic equipment over traditional mechanical systems. Aircraft electrical systems can save ...

By NSN Parts Now

Description : We are professional semi electric pallet jack CBD10A-II supplier and factory in China.We can produce the product according to your requirements and provide articulated forklift for sale. Product Features Two-speed driving system. Emergency brake switch. Manual lifting and motor driving. AC motor,no carbon brush,maintenance free,low noise. Sealed batteries free of ...

By Attack Global (Hongkong) Co.,Limited

Electric Reach Forklift Truck SAFETY AND STABILITY●AC motor drive with high efficiency, no need to replace carbon brush, very good ramp starting performance.●Two model function can control the speed of lift and lowering.●Low center of gravity, excellent stability for operation.●Small turning radius, good turning performance.●With advanced variable frequency AC motor free maintenance and excellent ...

By Attack Global (Hongkong) Co.,Limited

Brushless DC electric motor (BLDC motors, BL motors) also known as electronically commutated motors (ECMs, EC motors), or synchronous DC motors, are sensored brushless motor powered by DC electricity via an inverter or switching power supply which produces an AC electric current to drive each phase of the motor via a closed loop controller. The controller provides pulses of current to the motor ...

By Shenzhen TitanFlying Technology Co., Ltd (TTF)

One of the most complicated control problems in variable speed AC drives is the difficulty of processing feedback signal of the outer loop in the presence of harmonics. However, conventional fixed band hysteresis controller has a variable switching frequency throughout the fundamental period. A variable-hysteresis-band controller comes as a solution to reach an optimal ripple current. An ...

By Inderscience Publishers

In high power high performance AC drive industrial applications, multilevel inverters have established their importance, as they can synthesise output waveform with improved harmonic spectrum. In this paper, an improved synchronisation and symmetrical SVPWM algorithm is proposed for three–level inverter in overmodulation region for better utilisation of DC bus and to reduce harmonic distortion. ...

By Inderscience Publishers

The paper discusses the problem of sensorless rotor position/rotor flux angle estimation for the permanent magnet synchronous motor (PMSM) and for the induction motor (IM) and presents a family of sensorless observer designs that use a speed estimate. In sensorless field–oriented AC drive control, it is typical to measure the motor's voltages and currents and to estimate the other quantities of ...

By Inderscience Publishers

Modern induction machine (IM) drives are subject to a variety of system perturbations, i.e., weak grid conditions and the resulting DC-link voltage fluctuations, that could possibly compromise machine performance characteristics such as speed, torque, and load current. This paper investigates such circumstances, specifically the influence of DC-link variations on the IM drive under different ...

By Inderscience Publishers

Industrial Dryer Application BOILER PLANT APPLICATIONThermal Energy designed, built and installed two FLU-ACE heat recovery systems to reduce plant energy costs. The first FLU-ACE tower was designed to recover 24 MMBTU/h (at peak) and 11 MMBTU/h (winter average) of otherwise wasted heat. Stainless steel breeching collects hot gases from three separate exhausts (two rice process dryers and one ...

By Thermal Energy International Inc.

Distributed and Co-Generation has great growth potential, as the world is becoming more energy dependent and energy demanding. Distributed and Co-Generation creates alternative solutions to serve the growing energy market. In this paper, a comprehensive review of the different sources of distributed power is discussed including the main sources of the dispersed generation such as solar energy, ...

By Inderscience Publishers

This paper presents an optimised 12-pulse autotransformer-based AC–DC converter with reduced kVA magnetics for reducing the harmonic distortion in AC mains current in a vector-controlled induction motor drive (VCIMD). The proposed AC–DC converter results in elimination of fifth, seventh and 11th harmonics in the supply current. The proposed system consists of an autotransformer and a tuned ...

By Inderscience Publishers