scholarly journals PWM Method with Low d-axis Current Ripple for reducing Input Current THD at Light Loads in Three Phase PWM Rectifier

2012 ◽  
Vol 17 (6) ◽  
pp. 478-485
Author(s):  
Yong-Sin Jin ◽  
Hee-Keun Shin ◽  
Hag-Wone Kim ◽  
Kwan-Yuhl Cho
Keyword(s):  
Input Current ◽  
Pwm Rectifier ◽  
Three Phase ◽  
Current Ripple

Current Distortion Analysis of Three-Phase PWM Rectifier in Over-Modulation Region and Application to Air-Cooled Heat Pump Chiller

2020 ◽  
Vol 140 (9) ◽  
pp. 633-641
Author(s):  
Yohei Kubota ◽  
Keiichi Ishida ◽  
Masaki Kanamori ◽  
Yuki Yanase ◽  
Takahisa Endo ◽  
...  
Keyword(s):  
Heat Pump ◽  
Pwm Rectifier ◽  
Three Phase ◽  
Distortion Analysis ◽  
Modulation Region

scholarly journals Investigation of current-ripple for three-phase four-wire inverter-fed motors

2020 ◽  
Vol 6 ◽  
pp. 330-337
Author(s):  
Zhao Zhao ◽  
Roberto Leidhold
Keyword(s):  
Three Phase ◽  
Current Ripple

scholarly journals AC Current Ripple in Three-Phase Four-Leg PWM Converters with Neutral Line Inductor

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1430
Author(s):  
Aleksandr Viatkin ◽  
Riccardo Mandrioli ◽  
Manel Hammami ◽  
Mattia Ricco ◽  
Gabriele Grandi
Keyword(s):  
Numerical Simulations ◽  
Pulse Width Modulation ◽  
Neutral Line ◽  
Experimental Tests ◽  
Performance Comparison ◽  
Design Parameters ◽  
Switching Frequency ◽  
Three Phase ◽  
Ac Current ◽  
Current Ripple

This paper presents a comprehensive study of peak-to-peak and root-mean-square (RMS) values of AC current ripples with balanced and unbalanced fundamental currents in a generic case of three-phase four-leg converters with uncoupled AC interface inductors present in all three phases and in neutral. The AC current ripple characteristics were determined for both phase and neutral currents, considering the sinusoidal pulse-width modulation (SPWM) method. The derived expressions are simple, effective, and ready for accurate AC current ripple calculations in three- or four-leg converters. This is particularly handy in the converter design process, since there is no need for heavy numerical simulations to determine an optimal set of design parameters, such as switching frequency and line inductances, based on the grid code or load restrictions in terms of AC current ripple. Particular attention has been paid to the performance comparison between the conventional three-phase three-leg converter and its four-leg counterpart, with distinct line inductance values in the neutral wire. In addition to that, a design example was performed to demonstrate the power of the derived equations. Numerical simulations and extensive experimental tests were thoroughly verified the analytical developments.

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