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Installation of an online power quality monitoring system for the industry and applications
(2023-01-01)
Boonseng, C.
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Gitnumlapcharoen, P.
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Boonseng, R.
The use of non-linear power loads causes power system distortion or harmonic problems. When that problem occurs, it must be resolved in time. Therefore, this document presents an online power quality measurement system that can quickly notify events and information. Fast data acquisition results in the quick analysis as well. Finally, the electrical system will be solved by installing a hybrid filter that is suitable for that problem.
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Data Measurements of Harmonic and Subra-Harmonics Emission by AC Drive for Dry Milling Systems
(2019-08-01)
Boonseng, C.
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Boonseng, R.
;
Kularbphettong, K.
The ac drives which operate at a poor power factor decreases motor speed and injected large harmonic current and subra-harmonics into the supply network. The effects of harmonic and subra-harmonic that are injected into the network include overheating of transformers and motor and other instrumentation that were not designed with an insensitivity to harmonic in the supply. Thus, some form of harmonic and subra-harmonic mitigation is required. The PQube3 compact instrument is simply the best power monitor and real-time sensor and it records harmonic and supra-harmonics of AC drive for dry-milling system. To reduce the harmonic current and subra-harmonic injected in the network. The Hybrid Power Filter System(HPFs) are chosen because they can solve this problem with the least cost and the same effect as active filter. The results show that the association of HPFs is a very good solution for harmonic and subra-harmonic problems.
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The 3rd Harmonic current and Power Quality Improvements of Data Centers Using Hybrid Power Filters
(2019-08-01)
Boonseng, C.
;
Boonseng, R.
;
Kularbphettong, K.
This paper proposes a reduced 3rd harmonic current of server power supply units which effects of heating neutral cables and transformer. The data centers require the operation of many parallel-connected switch mode power supply on the same bus and transformer. Such a system significantly increases the high neutral current and power quality problems on the distribution network. Finally, using the Hybrid Power Filter System(HPFs) to solve this problem, the results can reduce distortion in current. The HPF is the combination of Active Power Filter (APF) and Passive Power Filter (PPF) which mostly use for reducing 3rd, 5th currents and power quality improvements of the system.
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Design and Installation of Active Filters for Power Quality Improvement for Water Treatment Plants
(2019-07-01)
Boonseng, C.
;
Boonseng, R.
;
Nilinmitr, N.
;
Kularhpettong, K.
This paper presents a simple of active power filters (APF) design techniques to minimize harmonic distortion and improve power factor caused by a harmonic source such as variable-frequency drives (VFDs) using 12-pulse converters. A method is finding the maximum rating of active power filter to minimize voltage and current harmonic distortion at a load bus where it is desired to maintain the displacement power factor at a desired level constraining the compensator value, which would create resonance condition. The water treatment plants require the operation of many parallel-connected VFDs on the same bus, such as a system significantly increases the power quality problems. The purpose of APF is sufficient to eliminate the harmonic currents, balance currents of the ac line input and increase power factor. The results show that the APF are a very appropriate solution for most typical harmonic problems, unbalanced current and power factor correction.

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