Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 63 for “"Current Sensor"”.
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A Wide-Bandwidth Galvanically Isolated Current Sensor with Frequency Modulation
Highly-integrated galvanically isolated current sensing solutions are required to satisfy the demands arising from recent developments in areas such as electric vehicles, smart homes and industrial electronics. These sensors must also be able to provide measurements for wide bandwidths and with …
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A common platform for current sensor evaluation in industrial automation applications
… of an evaluation system for Silicon Labs' current sensor products. The system provides significant advantages over existing evaluation systems by reducing hazardous voltages and currents through increased sense resistance and improving simplicity through a modular motherboard, daughtercard, …
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A retrot current sensor for non-intrusive power monitoring at the circuit breaker
This thesis presents a new sensor for power monitoring that measures current flow in a circuit breaker without permanent modification of the breaker panel or the circuit breaker itself. At the breaker panel, an inductive pickup and low-power amplifier sense current from the breaker face. Two …
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Multi-Branch Current Sensing Based Single Current Sensor Technique for Power Electronic Converters
A new concept of current sensor reduction technique called multi-branch current sensing technique (MCST) is proposed in this dissertation. In the proposed current sensing method, one more branch currents are simultaneously measured several times in a single switching cycle by using a single current …
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Integrated Current Sensor using Giant Magneto Resistive (GMR) Field Detector for Planar Power Module
… power modules have limited application for high-current operation, mainly because of their poor thermal management capability. Planar power modules have excellent thermal management capability and lower parasitic inductance, which means that the planar packaging method is desirable for high-power …
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PCB-Embedded Phase Current Sensor and Short-Circuit Detector for High Power SiC-Based Converters
… bandwidth, high performance Rogowski coil switch current sensors are employed. These sensor were embedded on the PCB and integrated on the gate driver. High bandwidth switch current sensor measurement is used for fast short-circuit detection and protection of the SiC MOSFET semiconductor switches. …
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Development of the BASS rake acoustic current sensor : measuring velocity in the continental shelf wave bottom boundary layer
… shelf. A flow distortion model for the sensor head is developed and the empirical determinations of the Reynolds number, Keulegan-Carpenter number, and angular dependencies of the sensor response for the laboratory and field prototypes is presented. The calibrated sensor response of the …
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Development of the BASS rake acoustic current sensor : measuring velocity in the continental shelf wave bottom boundary layer
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1997.
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An analog and digital data acquisition system for Non-Intrusive Load Monitoring
… on having access to digital samples of the current and voltage signals at the distribution point. This thesis presents a analog to digital converter for this task and a new low-power inductive current sensor for deployment in a standard circuit breaker box. The current sensor uses discrete …
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Real time power control strategy for output power for single phase inverter-linear load
… power for inverter-linear load connection. The current control strategy was adapted in controlling the output power of inverter to the resistive load. This was done by controlling the output current of the inverter. The output current was controlled by comparing between desired value with the …
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Mathematical model for improved mass flow estimation in the feeder housing of a forage harvester
… data, the model performed better than the current sensor system for some parameter sets, and as well as the current sensor system for others. Because of the mathematical complexity of the full dynamic model, and in order to reduce computation time, a reduced order quasi-static polynomial …
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Automatic sensor fault diagnosis and controller reconfiguration for induction motor drives sensor fault-tolerance
… motor (IM) drives normally incorporates position sensor, phase current sensors, de-link voltage sensor and de-link current sensor. In this research, a sensor fault-diagnosis and fault-tolerance scheme for IM drives is presented that will allow IM drive system to operate properly in the event of …
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High performance control of VRM circuits
… because of its ability to handle large load current and to achieve fast dynamic transient response under large step-load condition.The first part of this thesis fully investigates this issue for three popular control schemes used currently: Voltage Mode Control (VMC), Average Current Mode …
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State of Health Estimation System for Lead-Acid Car Batteries Through Cranking Voltage Monitoring
… to estimate the SOH with battery voltage and current; however, using a current sensor increases the installation cost of a system due to parts and labor. The battery SOH estimation method with the battery terminal voltage during engine cranking was previously proposed. The proposed SOH …
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Nonreciprocal effects and their applications in fiber optic networks
… and the known nonreciprocity-based fiber optic sensors are the fiber optic gyroscope and the fiber optic current sensor. The major difficulty in forming a general optical network theory is the complexity of optical signals compared to the electrical signal, because each light signal consists of …
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Development of the Advanced Emitter Turn-Off (ETO) Thyristor
… problems. Method to measure the ETO current and transfer the current information to a PWM signal is proposed. Based on the ETO's built-in current sensor, the over-current protection function of the ETO is designed as well. The experimental results show that the built-in current sensor …
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Tool Carousel to Support Agricultural Rover Soil Testing
… the intent to then exchange tools. The primary sensors are the Intel RealSense 435i camera and the tool-detecting current sensor both established on the rover, as well as limit switches for tool detection on the carousel. With polished fabrication and completed code implementation, the tool …
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Fundamental investigation of fuel cell-based breath alcohol sensors and the cause of sensor degradation in low-humidity conditions
… available fuel cell-based breath alcohol sensor. Characteristics of the existing sensor were compared with state of the art power generating fuel cells with the goal of understanding the factors that limit performance, lifetime and cost effectiveness of the sensors. This will guide the …
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Design of feedforward active ripple filters for power converters
… circuit which cancels or suppresses the ripple current and EMI generated by the power stage of a power converter, thus reducing the passive filtration requirements. This thesis presents the design and evaluation of various current sensing and injection methods for feedforward active filter …
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Development of repetitive current control for lead acid battery using arduino
This project focused on development of repetitive current control for lead acid battery using Arduino. The project uses Buck-Boost converter circuit with reference voltage of 14V from lead acid battery. The range of buck operation input voltage is between 18V to 15V while boost operation input …
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