The Experts below are selected from a list of 270 Experts worldwide ranked by ideXlab platform

S.g. Jalali - One of the best experts on this subject based on the ideXlab platform.

Robert H. Lasseter - One of the best experts on this subject based on the ideXlab platform.

Junrui Liang - One of the best experts on this subject based on the ideXlab platform.

  • A vibration-Powered Bluetooth wireless sensor node with running PFC Power Conditioning
    2017 IEEE International Symposium on Circuits and Systems (ISCAS), 2017
    Co-Authors: Kang Zhao, Yuheng Zhao, Junrui Liang
    Abstract:

    The kinetic energy harvesting technologies have attracted extensive research interests with the purpose to enable more distributed and wearable electronics to be Powered by their surrounding mechanical vibrations or motions. The Power Conditioning circuit is of importance for harvesting more energy from the vibration source and better managing the energy storage and Power users. This paper introduces the design and implementation of a vibration-Powered Bluetooth wireless sensor node, whose Power is acquired by a low-cost piezoelectric transducer and processed by a self-Powered synchronized switch Power Conditioning circuit. Given the capacitive feature of the piezoelectric transducers and the irregular feature of most vibration sources, the Power Conditioning circuit realizes the running Power factor correction (PFC), making the piezoelectric voltage in phase with the equivalent current source at every current zero-crossing. As a result, it can significantly enhance the energy harvesting capability. Detailed analysis on the Power consumption shows the feasibility of this design.

  • Live demo of a vibration-Powered Bluetooth sensor with running PFC Power Conditioning
    2017 IEEE International Symposium on Circuits and Systems (ISCAS), 2017
    Co-Authors: Kang Zhao, Yuheng Zhao, Junrui Liang
    Abstract:

    The energy harvesting technologies are going to replace the chemical batteries by providing an ever-lasting Power solution for future dispersive devices in the Internet of Things (IoT), in particular, wireless sensor networks (WSN) and wearable electronics. The Power Conditioning circuit plays an crucial role for enhancing the energy harvesting capability [1]. This live demonstration shows a vibration-Powered Bluetooth wireless sensor node with an emphasis on its running Power factor correction (PFC) Power Conditioning design. The concurrent full paper has been submitted to the regular ISCAS track [2]. The self-Powered sensor node is composed of three modules: the piezoelectric transducer, the self-Powered synchronized switch harvesting on inductor (SP-SSHI) circuit for the running PFC Power Conditioning, and the Bluetooth module. These modules are enclosed by a 3D-printed frame. The sensor node assembly and disassembly are shown in Fig. 1(a) and (b).

Kang Zhao - One of the best experts on this subject based on the ideXlab platform.

  • A vibration-Powered Bluetooth wireless sensor node with running PFC Power Conditioning
    2017 IEEE International Symposium on Circuits and Systems (ISCAS), 2017
    Co-Authors: Kang Zhao, Yuheng Zhao, Junrui Liang
    Abstract:

    The kinetic energy harvesting technologies have attracted extensive research interests with the purpose to enable more distributed and wearable electronics to be Powered by their surrounding mechanical vibrations or motions. The Power Conditioning circuit is of importance for harvesting more energy from the vibration source and better managing the energy storage and Power users. This paper introduces the design and implementation of a vibration-Powered Bluetooth wireless sensor node, whose Power is acquired by a low-cost piezoelectric transducer and processed by a self-Powered synchronized switch Power Conditioning circuit. Given the capacitive feature of the piezoelectric transducers and the irregular feature of most vibration sources, the Power Conditioning circuit realizes the running Power factor correction (PFC), making the piezoelectric voltage in phase with the equivalent current source at every current zero-crossing. As a result, it can significantly enhance the energy harvesting capability. Detailed analysis on the Power consumption shows the feasibility of this design.

  • Live demo of a vibration-Powered Bluetooth sensor with running PFC Power Conditioning
    2017 IEEE International Symposium on Circuits and Systems (ISCAS), 2017
    Co-Authors: Kang Zhao, Yuheng Zhao, Junrui Liang
    Abstract:

    The energy harvesting technologies are going to replace the chemical batteries by providing an ever-lasting Power solution for future dispersive devices in the Internet of Things (IoT), in particular, wireless sensor networks (WSN) and wearable electronics. The Power Conditioning circuit plays an crucial role for enhancing the energy harvesting capability [1]. This live demonstration shows a vibration-Powered Bluetooth wireless sensor node with an emphasis on its running Power factor correction (PFC) Power Conditioning design. The concurrent full paper has been submitted to the regular ISCAS track [2]. The self-Powered sensor node is composed of three modules: the piezoelectric transducer, the self-Powered synchronized switch harvesting on inductor (SP-SSHI) circuit for the running PFC Power Conditioning, and the Bluetooth module. These modules are enclosed by a 3D-printed frame. The sensor node assembly and disassembly are shown in Fig. 1(a) and (b).

R.d. Curry - One of the best experts on this subject based on the ideXlab platform.

  • Overview of a compact Power Conditioning system for high Power VHF and microwave sources
    IET European Conference on European Pulsed Power 2009. Incorporating the CERN Klystron Modulator Workshop, 2009
    Co-Authors: K.a. O'connor, R.d. Curry
    Abstract:

    The University of Missouri-Columbia has investigated a compact Power Conditioning system to integrate with flux compression generators. The main elements of the Power Conditioning system are a non-magnetic core spiral-wound transformer, an exploding wire fuse, and a crowbar switch. The Power Conditioning system can drive two types of loads. The first type of load utilizes a compact high voltage capacitor to both store the energy from the Power Conditioning system at high voltage and form an oscillating circuit to produce a VHF output signal. The second load is a high Power microwave (HPM) source, which is often modelled as a low resistance. This paper presents a brief overview of the Power Conditioning system with experimental and theoretical results of operation with the VHF and HPM sources, respectively. The pulse transformer and exploding wire fuse are described. The operation of the system with a VHF source is detailed, and experimental results are reviewed of the Power Conditioning system and VHF source driven by a simulator of a flux compression generator. The operation of the system with a HPM source is also described, and results from advanced simulations of the system with the dynamic resistance of the exploding wire fuse are provided. (4 pages)

  • Overview of a compact Power Conditioning system for high Power VHF and microwave sources
    2009 IET European Pulsed Power Conference, 2009
    Co-Authors: K.a. O'connor, R.d. Curry
    Abstract:

    The University of Missouri-Columbia has investigated a compact Power Conditioning system to integrate with flux compression generators. The main elements of the Power Conditioning system are a non-magnetic core spiral-wound transformer, an exploding wire fuse, and a crowbar switch. The Power Conditioning system can drive two types of loads. The first type of load utilizes a compact high voltage capacitor to both store the energy from the Power Conditioning system at high voltage and form an oscillating circuit to produce a VHF output signal. The second load is a high Power microwave (HPM) source, which is often modelled as a low resistance. This paper presents a brief overview of the Power Conditioning system with experimental and theoretical results of operation with the VHF and HPM sources, respectively. The pulse transformer and exploding wire fuse are described. The operation of the system with a VHF source is detailed, and experimental results are reviewed of the Power Conditioning system and VHF source driven by a simulator of a flux compression generator. The operation of the system with a HPM source is also described, and results from advanced simulations of the system with the dynamic resistance of the exploding wire fuse are provided.

  • Investigation of an FCG and pulse transformer based Power Conditioning system
    2007 16th IEEE International Pulsed Power Conference, 2007
    Co-Authors: Thomas A. Holt, K.a. O'connor, Andrew J. Young, Mohammed A. Elsayed, Andreas A. Neuber, M. Kristiansen, R.d. Curry
    Abstract:

    A cooperative effort was initiated between Texas Tech University and the University of Missouri-Columbia to develop a single-shot Power Conditioning system to drive an RF load. The purpose of the system is to convert prime Power to an output capable of driving a load with an impedance ranging from 15 to 30 Ohms. A Helical Flux Compression Generator (HFCG) was chosen as the electrical energy amplification stage due to its portability and high energy density. Certain topologies of HFCGs are better suited to drive low impedance loads (i.e. short circuits or similar), however, cascaded HFCG systems are capable of driving higher impedance loads, thereby reducing the requirements from subsequent pulse forming stages to match the HFCG output to the load impedance. Therefore, a dual-stage HFCG was chosen to drive a pulse transformer and series fuse in order to produce voltages on the order of 150 kV to 300 kV across the secondary of the pulse transformer. The fuse has been designed to open in 280 ns or less when a peak current of 25 kA-40 kA is reached. The output voltage will be used to drive an RF load or to charge a mesoband oscillator. Both topologies for Power Conditioning are being considered and tests to date indicate that both types of geometries can be driven by the HFCG and Power Conditioning system. The results of the experimental tests as well as the energy transfer efficiency will be discussed.

  • Investigation of an FCG and Pulse Transformer Based Power Conditioning System
    2007 IEEE 34th International Conference on Plasma Science (ICOPS), 2007
    Co-Authors: Thomas A. Holt, K.a. O'connor, Andrew J. Young, Mohammed A. Elsayed, Andreas A. Neuber, M. Kristiansen, R.d. Curry
    Abstract:

    Summary form only given. A cooperative effort was initiated between Texas Tech University and the University of Missouri-Columbia to develop a single-shot Power Conditioning system. The purpose of the system is to convert prime Power to an output capable of driving a load with an impedance ranging from 15 to 30 Ohms. A helical flux compression generator (HFCG) was chosen as the electrical energy amplification stage due to its portability and high energy density. Certain topologies of IIFCGs are better suited to drive low impedance loads (i.e. short circuits or similar), however, cascaded HFCG systems are capable of driving higher impedance loads, thereby reducing the requirements from subsequent pulse forming stages to match the HFCG output to the load impedance. Therefore, a dual-stage HFCG was chosen to drive a transformer and series fuse in order to step-up the voltage to the 150 k V-300 kV level. A staged fuse has been designed to open in 280 ns or less with 25 kA-40 kA peak currents. The output voltage will be used to drive an RF load or to charge a mesoband oscillator. Both topologies for Power Conditioning are being considered and tests to date indicate that both types of geometries can be driven by the HFCG and Power Conditioning system. The results of the experimental tests as well as the energy transfer efficiency will be discussed.