A Power Network Voltage Fluctuation Analysis Using Multi-Domain Simulation for EPS System Power Consumption

2009 ◽  
Vol 129 (6) ◽  
pp. 356-359
Author(s):  
Kimitoshi TSUJI
Keyword(s):  
Power Consumption ◽  
Fluctuation Analysis ◽  
Power Network ◽  
Voltage Fluctuation ◽  
System Power

scholarly journals Comparison between PI, PR+HC, and modified PR+HC current controller in inverter system

2019 ◽  
Vol 13 (3) ◽  
pp. 1167
Author(s):  
S. Salimin ◽  
M. Armstrong ◽  
S.A. Jumaat ◽  
R. Hamdan
Keyword(s):  
Power Electronic ◽  
Power Network ◽  
Compensation Scheme ◽  
Electronic Components ◽  
Harmonic Compensation ◽  
Proportional Integral ◽  
Current Controller ◽  
System Power ◽  
Study Development

<span>This paper presents the comparison between proportional integral (PI) current controller, proportional resonance and harmonic compensator (PR+HC) current controller and modified PR+HC current controller in the inverter system. Power electronic components like inverter and current controller uses in the system produce unwanted harmonics that affect the quality of distribution power network. In this study, development and simulation of current controller using conventional proportional integral (PI), the selective harmonic compensation scheme (PR+HC), and modified version of the latter are considered so to overcome these harmonics injection. Modification is by adding control parameter randomisation technique to the PR+HC scheme. Results compare the three controllers and proved that with modification to the selective harmonic compensation scheme, the overall current THD can be reduced</span>

scholarly journals Voltage Jump Suppression and Capacitor Voltage Fluctuation Analysis for a Four-Level Hybrid Flying Capacitor T-Type Converter

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 698 ◽  
Author(s):  
Chen Wei ◽  
Xibo Yuan ◽  
Juan Zhou ◽  
Kangan Wang ◽  
Yonglei Zhang ◽  
...  
Keyword(s):  
Dead Time ◽  
Fluctuation Analysis ◽  
Voltage Fluctuation ◽  
Multilevel Converters ◽  
Medium Voltage ◽  
Time Period ◽  
Capacitor Voltage ◽  
And Control ◽  
Laboratory Prototype ◽  
Voltage Jump

In low and medium voltage power conversion systems, multilevel converters are becoming more and more attractive due to improved power density. However, the complexity of topology and control is a big challenge for the application of multilevel converters. In this paper, a four-level (4L) hybrid flying capacitor (FC) T-type converter has been researched in detail. The topological advantage of the converter is displayed in comparison to existing four-level converters. According to the feature of the topology, the operating status has been analyzed and the reason for the voltage jump is researched in detail during the dead-time period. A strategy to reduce voltage jump by adjusting the switching states has be presented. The FC voltages can be balanced by selecting the appropriate switching states. The relationships between the fluctuations of FC voltages and the modulation index and power factor (PF) have been analyzed by simulation results. The performance of the 4L converter has been investigated in MATLAB/Simulink as well as on a down-scaled laboratory prototype.

Impacts of Current and Voltage Harmonics for Industrial Power Network

2019 ◽  
Vol 891 ◽  
pp. 239-245
Author(s):  
Nattachote Rugthaicharoencheep
Keyword(s):  
Power Quality ◽  
Medical Devices ◽  
Voltage Sags ◽  
Power Network ◽  
Equipment Manufacturing ◽  
The Subject ◽  
Voltage Harmonics ◽  
Domestic Appliances ◽  
System Power

Power quality (PQ) has become a more important issue recently due to the use of more sophisticated and sensitive equipment. Medical devices, telecommunication servers and equipment, manufacturing and domestic appliances rely on a good supply of power. This paper presents the review of the power quality in power system. Power quality has always been important for customers, but with increasing applications of electronic loads and controllers sensitive to the power quality, the subject has attracted renewed interest in recent times. Power quality encompasses several aspects: harmonics, over voltage, flicker voltage sags and swells interruptions etc. A major factor contributing to the importance of the quality of power is the deregulation of the power industry. Customers will demand higher levels of power quality to ensure the proper and continued operation of sensitive equipment and processes.

Energy Saving Design Principle Analysis of Power Electronic Transformation System

2013 ◽  
Vol 760-762 ◽  
pp. 1343-1347
Author(s):  
Tao Wan
Keyword(s):  
Genetic Algorithm ◽  
Energy Consumption ◽  
Power Consumption ◽  
Good Effect ◽  
Frequency Regulation ◽  
Measurement Technology ◽  
Power Electronic ◽  
Transformation System ◽  
Industrial Control ◽  
System Power

Power electronic transformation system is applied widely in industrial control and the application environment is complex. Big, small and medium-sized system power consumption improves continuously, so it is urgent to reduce the system energy consumption problems. This paper proposes a way to reduce the energy consumption of power electronic transformation system based on genetic algorithm. Work frequency regulation and working voltage measurement technology are used in industrial control system and the voltage and frequency produced by system power consumption are calculated. Genetic algorithm is used to calculate the optimal solution. And then achieve the purpose of reducing energy consumption. Experimental results show that this control algorithm can effectively reduce the power consumption of power electronic transformation system in industrial control and has a good effect.

Experimental Study on Miniature-Refrigeration System

2012 ◽  
Vol 531-532 ◽  
pp. 584-587
Author(s):  
Juan Juan Yang ◽  
Ke Li ◽  
Xin Yang Cui
Keyword(s):  
Power Consumption ◽  
Water Temperature ◽  
Compression Ratio ◽  
Cooling System ◽  
Operating Conditions ◽  
Operation Condition ◽  
Environment Temperature ◽  
Chilled Water ◽  
Compressor Power ◽  
System Power

A prototype of miniature cooling system was developed, which mainly consists of the miniature compressor from DONG YUAN and a spiral-tube evaporator designed by ourselves. The performances of the prototype with different parameters were tested. The influence of ambient temperature, chilled water temperature on the performance of the cooling system were analyzed. The best operating conditions and the optimum amount of refrigerant were obtained. Conclusions were gotten as follows:1) With environment temperature rising, compression ratio increases, system power consumption increases and refrigerating capacity COP decreases. 2) With chilled water temperature rising, compression ratio and power consumption decrease, refrigerating capacity increases, and COP increases rapidly.3) Paper gets system performance: refrigerating capacity is 63 W, compressor power consumption is 24.5 W, COP value is 2.57. in operation condition: refrigerant amount is 40g, environment temperature is 30°C, chilled water temperature is 40 °C, chilled water mass flow is 45 kg/h.

Sign in / Sign up

Export Citation Format

Share Document