LED lamp PSpice circuit emulating first harmonic current absorption as a function of the main voltage

2018 ◽  
Author(s):  
Salvatore Di Mauro ◽  
Angelo Raciti ◽  
Santi Agatino Rizzo ◽  
Giovanni Susinni
Keyword(s):  
Harmonic Current ◽  
Main Voltage

Harmonik Pada Inverter

2018 ◽  
Author(s):  
Asnil
Keyword(s):  
Harmonic Current ◽  
Fundamental Component ◽  
Non Linear ◽  
Voltage Limit ◽  
Standard Limit ◽  
Period Wave

One of the problems of electricity quality is harmonics. Harmonic is one ofthe components sinusoidal from one period wave that has the frequency representingmultiple from the fundamental component. Voltage and current distortion caused bynon-linear loads. One of kinds of non-linear loads is Inverter. Harmonic is verydisturbs and harm when exceeding standard limit that appointed. Standard worn asreference in this research is standard IEEE 519-1992, used to voltage limit andmaximum harmonic current.

Optimization Design on Power Filter of TCR Under Asymmetrical Voltage

2015 ◽  
Vol 9 (1) ◽  
pp. 591-599
Author(s):  
Ma Wenchuan ◽  
Zhitong Li ◽  
Chen Daochang ◽  
Qi Jiaming ◽  
Zhou Qiang ◽  
...  
Keyword(s):  
Optimization Design ◽  
Reactive Power ◽  
Estimation Method ◽  
Reactive Power Compensation ◽  
Harmonic Suppression ◽  
Matlab Simulation ◽  
Steel Mill ◽  
Harmonic Current ◽  
Third Harmonic ◽  
Power Filter

For resolving the problem that power filter cannot work normally because TCR (thyristor controlled reactor) generates extra third harmonic current under asymmetrical voltage, the paper proposes the estimation method of current capacity that TCR generates extra third harmonic current under asymmetrical voltage. Considering extra third harmonic current under asymmetrical voltage, Optimum method based on genetic algorithm is used to design the parameters of power filter. With reactive power compensation and harmonic suppression project of a steel mill as example, the proposed method is simulated by Matlab. Simulation results show optimized power filter can eliminate extra third harmonic current effects under asymmetrical voltage, meet the requirement of reactive power compensation, reduce harmonics current that load injects into system, and guarantee the power filter safe operation under asymmetrical voltage.

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