- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2018 IEEE SENSORS - New Delhi, India (2018.10.28-2018.10.31)] 2018 IEEE SENSORS - Rectangular Array Current Transducer with Integrated Microfluxgate Sensors
摘要： Novel rectangular yokeless current transducer with the range 400 A using 16 microfluxgate sensors around the busbar conductor is presented in this paper. Compared to yokeless transducers utilizing the differential pair of magnetic sensors, our solution has much better suppression of external currents (lower crosstalk). Compared to industrial transducers with yoke, the new transducer has 10-times lower noise, 10-times better temperature stability, and same crosstalk. Sensor design, different methods for calculating the current and temperature dependence are presented in this paper. Crosstalk error is examined in dependence on the number of the operating sensors and external current position.
关键词： Finite element modelling,current sensor,microfluxgate sensors,rectangular sensor array
更新于2025-09-19 17:15:36
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Design and Implementation Low Cost of Photovoltaic Monitoring System Network Based on LoRaWAN
摘要： The photovoltaic systems sector is in full renovation continually demanding a new system that allows the user to monitor his project from long distance. One of the systems that is currently being implemented in photovoltaic farms is known as the Internet of Things. Through this system, it is intended that the user can know in the real time the status of his photovoltaic systems panels. This paper presents a new solution based on LoRaWAN technology that allows the user to have the necessary information to achieve high efficient of the photovoltaic systems panels. This system is to design and implement a new measuring circuit for measuring the output voltage and current of the PV panels from long distance by using LoRa Technology. To test the correct functioning of the device, two tests have been carried out. The first one corresponds to an essay in which the maximum distance at which a node can communicate with the gateway is measured. While the second test means measuring the voltage and current output of the photovoltaic panel of the full system. The main advantages of the final circuit can be used to monitor PV panels with low-cost, and to have high-efficiency performance from long distance.
关键词： photovoltaic system,IOT,LoRaWAN,LoRa,current sensor,smart monitoring,voltage sensor
更新于2025-09-19 17:13:59
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[IEEE 2019 International Conference on Machine Learning, Big Data, Cloud and Parallel Computing (COMITCon) - Faridabad, India (2019.2.14-2019.2.16)] 2019 International Conference on Machine Learning, Big Data, Cloud and Parallel Computing (COMITCon) - IoT Enabled Real-Time Energy Monitoring for Photovoltaic Systems
摘要： The increasing demand for solar energy, high energy prices, and operational costs are all of which lead to several compelling reasons for the need for energy monitoring. In this paper, an Internet of Things based remote real-time energy monitoring system is developed to monitor the solar power generation. Various current and voltage sensors are integrated with a multipurpose microcontroller for aggregating the data. An IoT analytics platform is adapted to visualize the aggregated data and evaluate the energy generated for a given distributed generation system. This helps in continuous remote monitoring and results in improved efficiency of the power plants. The remote monitoring also helps in identifying various anomalies that may affect the operation of solar panels. The results depict the efficiency and error associated with the developed monitoring system, which proved to be better when compared with conventional energy monitoring systems.
关键词： Monitoring,Arduino Uno,PV Module,Current Sensor,Internet of Things (IoT),Voltage Sensor
更新于2025-09-16 10:30:52
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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Design of Optical Current Sensor for Intelligent State Detection in Distribution Network
摘要： We propose a fiber optical current sensor (FOCS) based on polarization diversity for intelligent state detection in distribution network. A real-time state of polarization measurement is employed to eliminate the degradation of the Faraday effect. In experiment, a maximally 2 times higher sensitivity was achieved compared with that of the conventional one. The proposed method exhibits good immunity to the random variation of birefringence and the real rotation angle due to the Faraday effect can be accurately detected. Besides, the measurement bandwidth and accuracy of proposed FOCS are considerable.
关键词： fiber current sensor,smart grid,polarization diversity detection
更新于2025-09-10 09:29:36
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[IEEE 2018 IEEE XXVII International Scientific Conference Electronics (ET) - Sozopol, Bulgaria (2018.9.13-2018.9.15)] 2018 IEEE XXVII International Scientific Conference Electronics - ET - Shieldless Eddy-Current Displacement Sensor with Improved Measurement Sensitivity
摘要： The major limitations of eddy-current displacement sensors, such as low measurement sensitivity and low stability, can be mitigated by using low-inductance flat coils in combination with a ratiometric measurement and a high excitation frequency, thus making eddy-current sensors of interest for high-precision applications. For the ratiometric measurement, the sensing coil is used in combination with a constant inductance reference coil, which are magnetically isolated from each other by a shield. In this paper, the implications of omitting the shield are studied. It is shown that a shieldless design brings several advantages related to sensitivity, compactness and manufacturability.
关键词： eddy-current sensor,magnetic shielding,displacement sensing,ratiometric measurement,sensor design
更新于2025-09-09 09:28:46
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Reduced Current Sensor Based Solar PV Fed Motion Sensorless Induction Motor Drive for Water Pumping
摘要： This paper proposes a solar photovoltaic (PV) array fed induction motor (IM) drive operated water pumping system with an speed adaptive estimator. It focuses on the implementation of a space vector modulation (SVM) of voltage source inverter (VSI) without current sensors. The motor phase currents are estimated from the DC link current. The VSI is used for maximum power tracking and to drive an IM. A generalized integrator based flux adaptation approach is used to improve the drive performance. Moreover, a modified model reference adaptive system (MRAS) based speed estimation with rotor fluxes and stationary frame currents enhances its stability throughout the operating range. A modified algorithm based on incremental-conductance (InC) is proposed for maximum power point (MPP), which is used for peak power tracking at each insolation with a technique to control flow-rate. The overall system incorporating a single-stage PV powered space vector modulation (SVM) based VSI fed IM driven water pump is modeled and its performance is simulated in MATLAB/Simulink environment. The appropriateness of proposed system is verified experimentally on a prototype developed in the laboratory under various operating conditions.
关键词： Incremental-conductance (InC) algorithm,Speed adaptation,PV array,Induction motor drive (IMD),Water pump,Current sensor reduction,Field-oriented control (FOC)
更新于2025-09-04 15:30:14