voltage fluctuation Articles
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Harmonics impacts evaluation for single-phase traction load
A planned electric utility substation supplying the single-phase traction load at New Haven, CT, USA was evaluated with regard to several important aspects of power quality. Harmonics: the trains are non-linear and time-varying loads. Harmonic current levels were measured at a nearby single-phase traction substation, which serves the same line as the future New Haven substation. These results ...
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Reactive power compensation strategies for wind generation in distribution systems: a power quality approach
This paper studies the impact on the voltage profile of wind energy based generators connected to distribution power systems. Voltage fluctuations arise in distribution levels including noncontrollable primary energy sources because of their corresponding active power injection variations. A number of reactive power strategies have been analysed and compared focusing on the voltage fluctuation ...
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Evaluation of voltage source IGBT converters for three-phase induction motor drives
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 ...
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What are the PMG and AREP Systems for?
To ensure the generator’s stable operation, it is important that there are no major voltage fluctuations. For this purpose, an excitation current is created to provide power to the AVR (Automatic Voltage Regulator), a device that maintains the generator's nominal voltage at a preset value, even when there are sudden load variations or in the case of special operations, such as: parallel ...
By Grupel SA
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Difference between Frequency and high-frequency forklift
First, the difference between the high frequency and power frequency Workers Electric Reach Truck charger power devices operating in the linear state, which means he used up the power device is always at work, and therefore would result in low efficiency of his work, generally in the range of 50% to 60%, have to say he is good linear power. Linear power supply works, so that he must change from ...
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Voltage Stabilizer - Buy Voltage Stabilizers Online at Lowest Prices in India
All of us know what voltage fluctuations can do to electrical appliances like air conditioners, refrigerators, televisions etc. Voltage Stabilizers are designed specifically for this purpose. Voltage Stabilizers regulate voltage and provide constant voltage to your expensive appliances. They prevent permanent damage to appliances caused because of high or low voltage. Choose from a wide ...
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Reactive and real power compensation with DSTATCOM and BESS for mitigation of flicker
Voltage flicker, a phenomenon of annoying light intensity fluctuation, caused by rapid change in industrial and domestic load such as electric arc furnaces (EAF), rolling mills, welding equipments and pumps operating periodically, has been a major concern for supply utilities, electricity regulatory agencies and costumers. The FACTS devices like SVC's, STATCOM and custom power devices like ...
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A self-tuning optimised unscented Kalman filter for voltage flicker and harmonic estimation
This paper presents a novel technique for estimation of two important power quality problems like voltage flicker and harmonics in power networks using an unscented Kalman filter (UKF) algorithm. The fluctuating voltage of a power network resulting in voltage flicker is tracked for estimating its envelope, voltage magnitude, and frequency. Further, the unscented filter is used to estimate ...
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Why energy meter device can improve the utilization rate of production equipment
Energy meter device is widely used in equipment, which can help enterprises better manage energy, monitor power status, save energy and reduce emissions, maintain equipment, control production costs, comply with environmental protection regulations and improve production efficiency. The energy meter device has become one of the indispensable and important equipment in modern industrial and ...
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How an Uninterruptible Power Supply Supports Pharma 4.0
A reliable, continual power supply is critical to any industrial process to prevent costly interruptions. But nowhere is it more critical than in a sterile environment that handles aseptic / Biological manufacturing. An interruption can lead to discarding entire batches of products, potentially costing producers hundreds of thousands of dollars. That’s why an industrial uninterruptible ...
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