Mobile On-Shore Marine Power Supply System for Harmonic Elimination

2014 ◽  
Vol 703 ◽  
pp. 290-293 ◽  
Author(s):  
Yan Qiong Song ◽  
Le Ming Xiao ◽  
Wei Qiang Ye
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Simulation Software ◽  
Matlab Simulation ◽  
Electrical System ◽  
Power Filter ◽  
Harmonic Elimination ◽  
Shore Power Supply ◽  
Frequency Power

This paper introduced the development of marine on-shore power supply system in China and abroad, and described the different control strategy of shore power based on uninterruptable power on-shore connection, as well as instance of variable frequency power supply between the port and ship for controlling harmonicdistortion, based on the Matlab simulation software to establish the simulation model of active power filter system,so as to provide the guarantee for achieving reliable paralleling between shore power and marine electrical system with effective harmonic elimination.

Research on Familiar Fault Diagnosis Technology to Electrical System of Auto Crane

2014 ◽  
Vol 875-877 ◽  
pp. 2170-2173
Author(s):  
Hong Xia Shi ◽  
Zhi Jian Duan ◽  
Xiao Bao Zhang ◽  
Yuan Li
Keyword(s):  
Fault Diagnosis ◽  
Power Supply ◽  
Theoretical Basis ◽  
Power Supply System ◽  
Working Condition ◽  
Supply System ◽  
Electrical System ◽  
Ignition System ◽  
Time Consumption

The development of truck crane is rapid, however, due to the constraint of working condition, the fault diagnosis and elimination are difficult. Pertaining to the electrical system of truck crane, the electrical system is analyzed. The electrical system is divided into four parts, including power supply system, startup system, ignition system and the whole-car circuit. The fault phenomenon is sorted and the causes of faults are analyzed. Then the detection and repairing methods of common faults are put forward, thereby save time consumption of maintenance, improve the maintenance efficiency and provide theoretical basis for actual maintaining operation.

Research on Synthesis Control Technology for Aircraft Electrical System

2012 ◽  
Vol 203 ◽  
pp. 202-206
Author(s):  
Hang Xu ◽  
Tao Zou
Keyword(s):  
Control System ◽  
Power Supply ◽  
Power Supply System ◽  
Fault Tolerant ◽  
Electrical Power ◽  
Supply System ◽  
Electromechanical System ◽  
Electrical System ◽  
Electrical Power System ◽  
Aircraft Flight

The airborne electromechanical system is essential to ensure the aircraft flight and it is most complex system in the aircraft, the aircraft intelligent power supply system and the aircraft electrical system synthesis control is the basis of airborne integrated electromechanical system. The paper gives up the hardware and software compositions and operation features of the aircraft electrical synthesis control system under based on the current situation of science and technology. It expounds the function and structure of PSP, ELMC and RT, the demands of BIT technique and fault tolerant design of electrical power system. It refers design scheme of electrical synthesis control system according to developing trends of aircraft electrical system.

Active power filter for reactive power compensation for the powerful sounding pulses shapers

2020 ◽  
Vol 1 (1) ◽  
pp. 21-30
Author(s):  
Olena Levon ◽  
Igor Domnin
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Reactive Power ◽  
Active Power Filter ◽  
Reactive Power Compensation ◽  
Active Power ◽  
Supply System ◽  
Active Filter ◽  
Supply Network ◽  
Power Filter

The expediency of using a power active filter in the mode of reactive power compensation of the supply network for the powerful sounding pulses shaper power supply system of the Institute of ionosphere NAS and MES of Ukraine is shown. An analysis of the literature has been carried out, which shows the effectiveness of solving the problem of reactive power compensation, filtering higher harmonics of the power supply network using active filtering of higher harmonics of current or voltage using an additional energy source to obtain a compensating signal in the form of current or voltage. The choice of the power circuit for constructing a power active filter has been made. A voltage inverter on IGBT transistors is used as a power active filter. The basic principles of operation of the power active filter control system are described, which are based on the p-q theory of power and provide for the calculation of instantaneous values ​​of the task currents for each phase of a three-phase power supply system. The work of the Matlab-model of the power supply system of the shaper is shown, the oscillograms of the main energy characteristics of the shaper are given. As a result of using a power active filter, the current of the supply network becomes close to sinusoidal, and the power factor tends to 1. A positive effect on the efficiency of the shaper when the power active filter is included in the supply network is noted, which is due to the efficiency of compensation of the reactive power consumed by the shaper from the supply network. The simulation results are presented, in particular, graphs of reactive power change at the point of connecting the power active filter to the supply network, at different levels of reactive power consumption by the shaper. The results obtained confirmed the possibility of using a power active filter in the mode of reactive power compensation of the supply network when solving the problems of improving the electromagnetic compatibility of powerful sounding pulses shapers with the supply network, reducing losses and increasing the reliability of the shapers. Keywords: active power filter, reactive power control, control systems

Research on Harmonic Elimination of the DC Circuit

2014 ◽  
Vol 543-547 ◽  
pp. 693-696
Author(s):  
Hao Hua Li ◽  
You Hua Wang ◽  
Dun Yu Zhu
Keyword(s):  
High Voltage ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Dc Power ◽  
Air Supply ◽  
Harmonic Elimination ◽  
Pollution Problem ◽  
Harmonic Pollution ◽  
Dc Power Supply

270V high voltage DC power supply system with grid of light weight, uninterrupted power supply and a two power density higher characteristic, in recent years become a hot research topic in domestic and international air supply system.[ To ensure the high voltage DC bus power quality, for the safe operation of the aircraft is very important. Single phase aeronautical static inverter as a typical aircraft power system load, the input current ripple of the serious pollution of the high voltage DC power supply. Therefore, the harmonic pollution problem of how to control the high voltage DC power supply system has been increasingly concerned aviation power researchers.

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