The instantaneous power quaternion of the three-phase electric circuit with linear load

2016 ◽  
Author(s):  
Oleg V. Nos ◽  
Andrey Dudin ◽  
Jurgen Petzoldt
Keyword(s):  
Electric Circuit ◽  
Instantaneous Power ◽  
Linear Load ◽  
Three Phase

Achieving Multiple Functions of Three-Phase Electric Springs in Unbalanced Three-Phase Power Systems Using the Instantaneous Power Theory

2018 ◽  
Vol 33 (7) ◽  
pp. 5784-5795 ◽  
Author(s):  
Shuo Yan ◽  
Ming-Hao Wang ◽  
Tian-Bo Yang ◽  
Siew-Chong Tan ◽  
Balarko Chaudhuri ◽  
...  
Keyword(s):  
Power Systems ◽  
Power Theory ◽  
Multiple Functions ◽  
Instantaneous Power ◽  
Three Phase

scholarly journals Influence of PWM Methods on Semiconductor Losses and Thermal Cycling of 15-kVA Three-Phase SiC Inverter for Aircraft Applications

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 620 ◽  
Author(s):  
Bernardo Cougo ◽  
Lenin Morais ◽  
Gilles Segond ◽  
Raphael Riva ◽  
Hoan Tran Duc
Keyword(s):  
Thermal Cycling ◽  
Thermal Stresses ◽  
Pulse Width Modulation ◽  
Junction Temperature ◽  
Phase Inverter ◽  
Instantaneous Power ◽  
Power Modules ◽  
Temperature Swing ◽  
Three Phase ◽  
Three Phase Inverter

This paper presents the influence of different pulse width modulation (PWM) methods on losses and thermal stresses in SiC power modules used in a three-phase inverter. The variation of PWM methods directly impacts instantaneous losses on these semiconductors, consequently resulting in junction temperature swing at the fundamental frequency of the converter’s output current. This thermal cycling can significantly reduce the lifetime of these components. In order to determine semiconductor losses, one needs to characterize SiC devices to calculate the instantaneous power. The characterization methodology of the devices, the calculation of instantaneous power and temperature of SiC dies, and the influence of the different PWM methods are presented. A 15-kVA inverter is built in order to obtain experimental results to confirm the characterization and loss calculation, and we show the best PWM methods to increase efficiency and reliability of the three-phase inverter for specific aircraft applications.

A New Improved Walsh Function Algorithm for Active and Reactive Power Measurement

2014 ◽  
Vol 67 (3) ◽  
Author(s):  
Garba Aliyu ◽  
Saifulnizam Abd. Khalid ◽  
Jafaru Usman ◽  
Ahmad Fuad A. Aziz ◽  
Hussein Shareef
Keyword(s):  
Reactive Power ◽  
Walsh Function ◽  
Power Measurement ◽  
Nonlinear Load ◽  
Active And Reactive Power ◽  
Linear Load ◽  
Alternative Approach ◽  
Three Phase ◽  
Linear And Nonlinear ◽  
High Level

This paper present improved Walsh function (IWF) algorithm as an alternative approach for active and reactive power measurement in linear and nonlinear, balanced and unbalanced sinusoidal three phase load system. It takes advantage of Walsh function unified approach and its intrinsic high level accuracy as a result of coefficient characteristics and energy behaviour representation. The developed algorithm was modeled on the Matlab Simulink software; different types of load, linear and nonlinear were also modeled based on practical voltage and current waveforms and tested with the proposed improved Walsh algorithm. The IEEE standard 1459-2000 which is based on fast Fourier transform FFT approach was used as benchmark for the linear load system while a laboratory experiment using Fluke 435 power quality analyzer PQA which complies with IEC/EN61010-1-2001standards was used to validate the improved algorithm for nonlinear load measurement. The results showed that the algorithm has the potential to effectively measure three phase power components under different load conditions.

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