Research and Implementation of the Triangular Wave Pulse Power Device

2012 ◽  
Vol 241-244 ◽  
pp. 657-660
Author(s):  
Da Yong Wu ◽  
Sheng Bao Yu
Keyword(s):  
High Reliability ◽  
Pulsed Power ◽  
Pulse Power ◽  
Power Device ◽  
Detection Systems ◽  
Transient Electromagnetic ◽  
Voltage Clamping ◽  
Output Characteristics ◽  
Dual Polarity ◽  
Transmitted Waveform

The pulsed power is an important part of the airborne geophysical method detection systems. However, the traditional method of aerial transient electromagnetic transmitted waveform will cause the interference which is not conducive to process the post-data. The paper presents a new kind of dual polarity triangle pulse power device. The experimental results verify the correctness of theoretical analysis by using constant voltage clamping method to achieve emission of the isosceles triangular current pulse. Its falling edge of high linearity, high reliability, the output characteristics of a good anti-interference ability.

Design of Transient Electromagnetic Transmitter Based on FPGA

2014 ◽  
Vol 496-500 ◽  
pp. 630-633 ◽  
Author(s):  
Lei Zhang ◽  
Qing Ming Duan ◽  
Hao Sun ◽  
Ting Zhe Huang ◽  
Jun Wei Shi ◽  
...  
Keyword(s):  
High Power ◽  
Detection System ◽  
High Reliability ◽  
Field Application ◽  
Constant Voltage ◽  
Transient Electromagnetic ◽  
Electromagnetic Detection ◽  
Voltage Clamping ◽  
Electromagnetic Transmitter ◽  
Off Time

Transient electromagnetic transmitter is a part of the transient electromagnetic detection system. In the aspect of short turn-off time for high-power current, there are still many problems to be solved urgently. This paper put forward a design scheme of transient electromagnetic transmitter, amplified the control signal with triode, and put forward a kind of passive constant voltage clamping absorbing circuit, which made the turn-off time shorter and the linearity of the emission currents lagging edge higher. This transient electromagnetic transmitter system is portable and easy to operate. Through experiments we can prove that the transmitter has the characteristic of short turn-off time and high reliability, and it has reached the requirements of field application.

Electrothermal Instability Studies on a Small Pulsed Power Device

2017 ◽  
Author(s):  
S. M. Miller ◽  
A. M. Steiner ◽  
R. D. McBride ◽  
D. A. Yager-Elorriaga ◽  
N. M. Jordan ◽  
...  
Keyword(s):  
Pulsed Power ◽  
Power Device

Research on the MPPT Stability of the Single-Stage and Single-Phase Photovoltaic Grid-Connected System

2012 ◽  
Vol 263-266 ◽  
pp. 2252-2257 ◽  
Author(s):  
Loembe Souamy
Keyword(s):  
Single Phase ◽  
High Reliability ◽  
Single Stage ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Multi Stage ◽  
Output Characteristics ◽  
Power Point ◽  
Pv Grid

At present the multi-stage transformation topology are more used in photovoltaic (PV) grid-connected system, although the control of this structure is relatively simple but the conversion efficiency is difficult to improve due to increase in transformation series. The single stage topology has a simple topology with high reliability and efficiency because of low power consumption, but control algorithm is more complex because of its power convert main circuit without DC-DC. This paper describes a method for maximum power point tracking (MPPT) in the single-stage and single-phase PV grid-connected system. In the paper, the nonlinear output characteristics of the PV including I-V & P-V are obtained in changed solar insulations or temperature based on MATLAB, and the MPPT algorithm which is based on the particle swarm optimization (PSO) method is also described. The simulation model of the single-stage and single-phase PV grid-connected system is built , and simulation results show the MPPT algorithm has excellent dynamic and static performances ,which verifies the PSO method is effective for MPPT in the single-stage and single-phase PV grid-connected system.

scholarly journals Multieffect Coupled Nanogenerators

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-24
Author(s):  
Yun Ji ◽  
Yuan Liu ◽  
Ya Yang
Keyword(s):  
Electronic Device ◽  
High Reliability ◽  
High Accuracy ◽  
Charge Carriers ◽  
Energy Harvesters ◽  
Available Energy ◽  
Potential Applications ◽  
Self Powered ◽  
Output Characteristics ◽  
Device Interaction

With the advent of diverse electronics, the available energy may be light, thermal, and mechanical energies. Multieffect coupled nanogenerators (NGs) exhibit strong ability to harvest ambient energy by integrating various effects comprising piezoelectricity, pyroelectricity, thermoelectricity, optoelectricity, and triboelectricity into a standalone device. Interaction of multitype effects can promote energy harvesting and conversion by modulating charge carriers’ behaviour. Multieffect coupled NGs stand for a vital group of energy harvesters, supporting the advances of an electronic device and promoting the resolution of energy crisis. The matchless versatility and high reliability of multieffect coupled NGs make them main candidates for integration in complicated arrays of the electronic device. Multieffect coupled NGs can also be employed as a variety of self-powered sensors due to their rapid response, high accuracy, and high responsivity. This article reviews the latest achievements of multieffect coupled NGs. Fundamentals mainly including basic theory and materials of interest are covered. Advanced device design and output characteristics are introduced. Potential applications are described, and future development is discussed.

High-Reliability Wireless Packaging for High-Temperature SiC Power Device Sintered by Novel Organic-Free Nanomaterial

2020 ◽  
Vol 10 (12) ◽  
pp. 1953-1959
Author(s):  
Hui Ren ◽  
Guisheng Zou ◽  
Zhenyu Zhao ◽  
Mengya Wan ◽  
Hongqiang Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
High Reliability ◽  
Power Device

Strategic Overview of High-Voltage SiC Power Device Development Aiming at Global Energy Savings

2014 ◽  
Vol 778-780 ◽  
pp. 1089-1095 ◽  
Author(s):  
Lin Cheng ◽  
John W. Palmour ◽  
Anant K. Agarwal ◽  
Scott T. Allen ◽  
Edward V. Brunt ◽  
...  
Keyword(s):  
Power Systems ◽  
High Voltage ◽  
Energy Savings ◽  
System Size ◽  
Pulsed Power ◽  
Power Device ◽  
Current Status ◽  
Variable Speed ◽  
Device Development ◽  
Compact Pulsed Power

Advanced high-voltage (≥10 kV) silicon carbide (SiC) devices described in this paper have the potential to significantly impact the system size, weight, high-temperature reliability, and cost of modern variable-speed medium-voltage (MV) systems such as variable speed (VSD) drives for electric motors, integration of renewable energy including energy storage, micro-grids, traction control, and compact pulsed power systems. In this paper, we review the current status of the development of 10 kV-20 kV class power devices in SiC, including MOSFETs, JBS diodes, IGBTs, GTO thyristors, and PiN diodes at Cree. Advantages and weakness of each device are discussed and compared. A strategy for high-voltage SiC power device development is proposed.

scholarly journals Power Device Thermal Fault Tolerant Control of High-Power Three-Level Explosion-Proof Inverter Based on Holographic Equivalent Dual-Mode Modulation

2017 ◽  
Vol 2017 ◽  
pp. 1-9
Author(s):  
Shi-Zhou Xu ◽  
Chun-jie Wang ◽  
Yu-feng Peng
Keyword(s):  
Thermal Stability ◽  
High Power ◽  
Pulse Width Modulation ◽  
Fault Tolerant ◽  
High Thermal Stability ◽  
Equivalent Model ◽  
Power Device ◽  
Power Devices ◽  
Dual Mode ◽  
Output Characteristics

It is necessary for three-level explosion-proof inverters to have high thermal stability and good output characteristics avoiding problems caused by power devices, such as IGBT, so it becomes a hot and difficult research point using only one control algorithm to guarantee both output characteristics and high thermal stability. Firstly, the simplified SVPWM (Space Vector Pulse Width Modulation) algorithm was illustrated based on the NPC (neutral-point-clamped) three-level inverter, and then the quasi-square wave control was brought in and made into a novel holographic equivalent dual-mode modulation algorithm together with the simplified SVPWM. The holographic equivalent model was established to analyze the relative advantages comparing with the two single algorithms. Finally, the dynamic output and steady power device losses were analyzed, based on which the power loss calculation and system simulation were conducted as well. The experiment proved that the high-power three-level explosion-proof inverter has good output characteristics and thermal stability.

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