- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2018 IEEE Industry Applications Society Annual Meeting (IAS) - Portland, OR, USA (2018.9.23-2018.9.27)] 2018 IEEE Industry Applications Society Annual Meeting (IAS) - Performance Based Design of IMD for Single Stage PV Fed Water Pumping
摘要： This paper presents an improved designed induction motor, used for photovoltaic (PV) array fed water pumping system. The overall system is designed without a mechanical sensor to reduce both cost and complexity with simultaneous assurance of optimum power utilization of a PV array. The proposed system consists of an induction motor operated water pump, controlled by field-oriented control (FOC) with artificial neural network (ANN) current control technique. The MPPT (Maximum Power Point Tracking) as well as DC link voltage, is regulated by three-phase voltage source inverter (VSI). The estimation of motor speed eliminates the use of mechanical sensor and makes the system cheaper and robust. A new robust speed adaptive algorithm is presented, which is less dependent on parameters. A detailed study of various factors affecting the efficiency of the motor, is given to improve the behavior of the induction motor drive (IMD) for water pumping. The designed motor is tested on the developed prototype in the laboratory and its suitability is judged through various results under steady state and dynamic conditions of insolation variations.
关键词： Field-Oriented Control (FOC),Speed Adaptation,Finite Element Method,ANN Based Current Control,IMD (Induction Motor Drive),Water pump,PV Array,P&O Based MPPT Algorithm
更新于2025-09-23 15:23:52
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Adaptive Nonlinear Equalization of a Tunable Bandpass Filter
摘要： The mitigation of third-order intermodulation distortion produced by a nonlinear tunable bandpass filter (BPF) in a digital receiver channel is demonstrated. An iterative solution is proposed, in the use of the least-mean-square algorithm, as an effective way to allow the correction coefficients to adapt to the changes in the system characteristics when the center frequency is changed. Results are shown using a two-pole, varactor-loaded BPF, and an Analog Devices AD9371 transceiver.
关键词： Adaptive signal processing,nonlinear distortion and intermodulation distortion (IMD),nonlinear filters,least mean square
更新于2025-09-23 15:22:29
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Linearization of Photonic Link Based on Phase-Controlled Dual Drive Dual-Parallel Macha??Zehnder Modulator
摘要： This paper presents analytical analysis for a linearization method of a microwave photonic (MWP) link based on dual-drive dual-parallel Mach–Zehnder Modulator. Electric phase shifters are utilized to suppress intermodulation distortion terms and to further increase linearity of the link. A simulation model is designed to evaluate spurious free dynamic range (SFDR) against third order intermodulation distortion as it is a key performance measurement parameter of MWP link. A suppression of 68 dB is found in intermodulation terms and SFDR enhances by 16 dB which ensures the improvement in performance of link against intermodulation terms.
关键词： DD-DPMZM,SFDR,MWP,IMD
更新于2025-09-23 15:19:57
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[IEEE 2019 Compound Semiconductor Week (CSW) - Nara, Japan (2019.5.19-2019.5.23)] 2019 Compound Semiconductor Week (CSW) - Multi-wavelength DFB laser array in InAs/GaAs quantum dot material epitaxially grown on Silicon
摘要： A ?rst proof-of-concept mm-sized implantable device using ultrasonic power transfer and a hybrid bi-directional data communication link is presented. Ultrasonic power transfer enables miniaturization of the implant and operation deep inside the body, while still achieving safe and high power levels (100 W to a few mWs) required for most implant applications. The current implant prototype measures 4 mm 7.8 mm and is comprised of a piezoelectric receiver, an IC designed in 65 nm CMOS process and an off-chip antenna. The IC can support a maximum DC load of 100 W for an incident acoustic intensity that is 5% of the FDA diagnostic limit. This demonstrates the feasibility of providing further higher available DC power, potentially opening up new implant applications. The proposed hybrid bi-directional data link consists of ultrasonic downlink and RF uplink. Falling edge of the ultrasound input is detected as downlink data. The implant transmits an ultra-wideband (UWB) pulse sequence as uplink data, demonstrating capability of implementing an energy-ef?cient M-ary PPM transmitter in the future.
关键词： implantable biomedical devices,active recti?er,mm-sized implants,ultrasonic power transfer,piezoelectric receivers,bi-directional data communication,CMOS,antennas,IMD,AC-DC converter,radio transmitters
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE 4th International Conference on Image, Vision and Computing (ICIVC) - Xiamen, China (2019.7.5-2019.7.7)] 2019 IEEE 4th International Conference on Image, Vision and Computing (ICIVC) - A Method for Generating Spray Trajectory of a Shoe Sole Based on Laser Vision
摘要： A ?rst proof-of-concept mm-sized implantable device using ultrasonic power transfer and a hybrid bi-directional data communication link is presented. Ultrasonic power transfer enables miniaturization of the implant and operation deep inside the body, while still achieving safe and high power levels (100 W to a few mWs) required for most implant applications. The current implant prototype measures 4 mm 7.8 mm and is comprised of a piezoelectric receiver, an IC designed in 65 nm CMOS process and an off-chip antenna. The IC can support a maximum DC load of 100 W for an incident acoustic intensity that is 5% of the FDA diagnostic limit. This demonstrates the feasibility of providing further higher available DC power, potentially opening up new implant applications. The proposed hybrid bi-directional data link consists of ultrasonic downlink and RF uplink. Falling edge of the ultrasound input is detected as downlink data. The implant transmits an ultra-wideband (UWB) pulse sequence as uplink data, demonstrating capability of implementing an energy-ef?cient M-ary PPM transmitter in the future.
关键词： piezoelectric receivers,bi-directional data communication,mm-sized implants,CMOS,ultrasonic power transfer,active recti?er,IMD,antennas,radio transmitters,AC-DC converter,implantable biomedical devices
更新于2025-09-19 17:13:59
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[IEEE 2018 2nd IEEE International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES) - Delhi, India (2018.10.22-2018.10.24)] 2018 2nd IEEE International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES) - Neuro-ELO Based Speed Estimation of Improved Designed Induction Motor Drive for Single Stage Photovoltaic Fed Water Pumping
摘要： This paper deals with a system with an improved designed induction motor for photovoltaic (PV) array fed water pumping system. The induction motor drive (IMD) is made mechanical sensorless using a proposed adaptive observer based neuro-Luenberger technique to reduce both cost and complexity with the single stage PV array based maximum power point tracking (MPPT) providing cost-effective solution along with simultaneous assurance of optimum power utilization of a PV array. The proposed system is controlled by field-oriented control (FOC). The MPPT as well as DC link voltage, is regulated by three-phase voltage source inverter (VSI). The estimation of motor speed eliminates the use of mechanical sensor and makes the system cheaper and robust. A new robust speed adaptive algorithm is presented, which is less dependent on parameters. A detailed study of various factors affecting the efficiency of the motor, is given to improve the behavior of the IMD for water pumping. The designed motor is tested on the developed prototype in the laboratory and its suitability is judged through various test results under steady state and dynamic conditions of insolation variations.
关键词： IMD (Induction Motor Drive),Water pump,Speed Adaptation,Field-Oriented Control (FOC),Neuro-Extended Luenberger Observer (ELO),PV Array
更新于2025-09-16 10:30:52
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RoF system based on phase modulator-employing polarization for linearization
摘要： In this paper, an analytical model is represented to analyze and improve the performance of radio over fiber (RoF) links against nonlinear distortion. RoF transmission link comprised of a phase modulator, polarizer and optical filter is considered. By controlling angles of polarization, the signals are fed to the modulator. Polarizer helps to suppress intermodulation distortion along the considered link. Performance is found in terms of spurious-free dynamic range (SFDR). Results show an improvement of 7.5-dB in SFDR for a polarized link in comparison with the conventional link.
关键词： Polarizer,IMD,SFDR,RoF,Nonlinear distortion
更新于2025-09-10 09:29:36
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[IEEE 2017 14th IEEE India Council International Conference (INDICON) - Roorkee (2017.12.15-2017.12.17)] 2017 14th IEEE India Council International Conference (INDICON) - An Effective Solar PV Fed Modified Vector Control of IMD for Water Pumping
摘要： The present paper deals with a speed sensorless technique of vector controlled induction motor drive fed from solar PV (Photovoltaic) array used for water pumping. This sensorless technique is based stator flux oriented in stationary reference frame. The special feature of the proposed topology is the additional feedforward loop added to the existing vector control loop, which makes it decoupled as a key feature of vector control. The mechanical sensorless induction motor drive is powered by solar photovoltaic (SPV) array to be utilized to drive the submersible water pump. The simulation of proposed topology is performed in MATLAB/Simulink environment and its performance is validated on test setup developed in the laboratory.
关键词： induction motor drive (IMD),Solar photovoltaic (SPV) array,DC-DC converter,decoupled control,SVM technique,water pumps,three-phase inverter
更新于2025-09-10 09:29:36
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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