Investigation of the accuracy of VFD analog output data and the energy performance of different voltage controls in a VFD-motor-belt-fan system

Wang, Gang; Han, Zhitao

doi:10.1016/j.enbuild.2019.04.008

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…The VFD for large-sized motors can provide consistent VFD output power, which has a stable value by the filter inside the VFD. Figure 20 compares the motor power input read from a VFD and the motor power input measured by a power analyzer for a 5.6 kW (7.5 HP) motor [39]. It reveals that the VFD output power measured by the VFD is different from the actual VFD output power but has a consistent correlation with actual VFD output power.…”

Section: Discussion On Alternative Power Measurementmentioning

confidence: 99%

Loose Belt Fault Detection and Virtual Flow Meter Development Using Identified Data-driven Energy Model for Fan Systems

Wang

Tiamiyu

et al. 2023

Sustainability

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An energy model that correlates fan airflow, head, speed, and system power input is essential to detect device faults and optimize control strategies in fan systems. Since the application of variable-frequency drives (VFDs) makes the motor-efficiency data published by manufacturers inapplicable for VFD–motor–fan systems, the fan efficiency and drive (belt–motor–VFD) efficiency must be identified for each individual system to obtain accurate energy models. The objectives of this paper are to identify an energy model of existing VFD–motor–fan systems using available experimental data and demonstrate its applications in loose belt fault detection and virtual airflow meter development for optimal control. First, an approach is developed to identify the fan head, fan efficiency, and drive-efficiency curves using available fan head, speed, and system power input as well as temporarily measured airflow rate without measuring shaft power. Then, the energy model is identified for an existing VFD–motor–fan system. Finally, the identified model is applied to detect the slipped belt faults and develop the virtual airflow meter. The experiment results reveal that the developed approach can effectively obtain the energy model of VFD–motor–fan systems and the model can be applied to effectively detect slipped belt faults and accurately calculate the fan airflow rate.

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Section: Discussion On Alternative Power Measurementmentioning

confidence: 99%

Loose Belt Fault Detection and Virtual Flow Meter Development Using Identified Data-driven Energy Model for Fan Systems

Wang

Tiamiyu

et al. 2023

Sustainability

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“…VFD memantau berbagai data operasional motor, termasuk frekuensi, arus, tegangan, dan daya. Frekuensi dan arus yang dihasilkan oleh VFD memberikan nilai yang sangat akurat sesuai dengan nilai sebenarnya, sedangkan tegangan dan daya memiliki hubungan konsisten dengan nilai aktual tetapi tidak dapat memberikan nilai yang akurat secara langsung [13].…”

Section: Penelitian Relevanunclassified

Kendali Motor Induksi Menggunakan Variable Speed Drive

Aripriharta

2023

JKTE

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Abstrak—Lebih dari 65% energi listrik industri dikonsumsi oleh motor, yang saat ini sangat umum digunakan sebagai penggerak utama pada sebagian besar mesin untuk aplikasi idustri dan pertambangan. Dasar sebuah motor induksi yaitu menggunakan prinsip induksi elektromagnetik diamana gaya gerak listrik diinduksi dan melintasi konduktor listriknya ketika medan magnet berputar. Kecepatan putar pada motor induksi dipengaruhi oleh nilai frekuensi tegangan yang masuk ke dalam motor. Ketika beban bertambah, kecepatan putar motor juga akan berubah. Variable Speed Drive digunakan untuk mendapatkan nilai kecepatan putaran motor dengan mengatur nilai frekuensi dari tegangan yang akan masuk ke motor walaupun jumlah beban yang digunakan bisa berubah sewaktu-waktu. Pengujian dilakukan dengan melakukan analisa terhadap proses kerja perangkat kecepatan variabel (VSD) untuk pengaturan kecepatan motor induksi 3 fasa. Parameter pengujian berupa arus stator (Is), kecepatan putar rotor (Nr), dan torsi elektromagetik (Te). Berdasarkan hasil pengujian yang telah dilakukan, diketahui bahwa pemasangan VSD pada motor memiliki kemampuan untuk mengatur kecepatan motor dengan baik.

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“…However, most of the existing studies have mainly conducted studies related to the energy efficiency of HVAC systems based on analysis in static conditions. These results are applicable only in the design stage, and in the actual operation stage, various factors such as changes in indoor and outdoor environmental conditions and system performance degradation affect the energy efficiency of HVAC systems [18], [19]. Therefore, for the energy-efficient operation of the HVAC system in a pig house, the role of dynamic simulation that can present a control strategy responding to changes in environmental conditions and system performance is required.…”

Section: Introductionmentioning

confidence: 99%

Digital Twin Application: Making a Virtual Pig House Toward Digital Livestock Farming

Jeong,

Jo,

Lee

et al. 2023

IEEE Access

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Digital twins, an emerging technology, are widely used in various industries. It builds a virtual space by mirroring a physical space and performs different simulations to solve problems that are complicated or impossible to solve in the physical space. Livestock farming in agriculture is evolving rapidly with the introduction of various information and communication technologies for digital farming. However, only few studies have examined the digital twin in terms of HVAC systems directly related to productivity in livestock farming. Here, we propose a novel digital twin framework for livestock farming focusing on pig houses. Livestock farming is one of perspective areas where digital twins can provide benefits for the growth of livestock and their operation in an efficient manner. To validate effect of the proposed digital twin framework for a pig house, we perform various simulations using a real-world dataset of a pig house. As a result of analyzing the energy demands for heating in pigsty based on the digital twin framework, the fan-coil unit was found to be the most energy efficient. In addition, when the optimal control of the HVAC system was applied, it was found to be more energy efficient than the conventional control method. The results obtained in this study show that our approach is superior to existing operational conventions, particularly in terms of energy efficiency.INDEX TERMS Digital livestock farming, digital twin, energy, simulation.

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Investigation of the accuracy of VFD analog output data and the energy performance of different voltage controls in a VFD-motor-belt-fan system

Cited by 7 publications

References 7 publications

Loose Belt Fault Detection and Virtual Flow Meter Development Using Identified Data-driven Energy Model for Fan Systems

Loose Belt Fault Detection and Virtual Flow Meter Development Using Identified Data-driven Energy Model for Fan Systems

Kendali Motor Induksi Menggunakan Variable Speed Drive

Digital Twin Application: Making a Virtual Pig House Toward Digital Livestock Farming

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