TY - GEN
T1 - LCL filter design for grid-connected inverters by analytical estimation of PWM ripple voltage
AU - Sahoo, Ashish Kumar
AU - Shahani, Arushi
AU - Basu, Kaushik
AU - Mohan, Ned
PY - 2014
Y1 - 2014
N2 - LCL filter is becoming an attractive choice over conventional L filters for grid-connected voltage source inverters (VSI) due to smaller inductor size and better attenuation of the ripple components in the grid current. The modulation of the VSI generates switched voltages which results in distorted currents. In this paper, a simple closed form analytical expression is derived for the higher order switching components present in the inverter voltage. This is used in a systematic design procedure to design the LCL filter components for allowable grid current harmonics. A passive damping resistor is designed ensuring minimum power loss. The design is validated by simulations in MATLAB/Simulink and experiments on a laboratory prototype.
AB - LCL filter is becoming an attractive choice over conventional L filters for grid-connected voltage source inverters (VSI) due to smaller inductor size and better attenuation of the ripple components in the grid current. The modulation of the VSI generates switched voltages which results in distorted currents. In this paper, a simple closed form analytical expression is derived for the higher order switching components present in the inverter voltage. This is used in a systematic design procedure to design the LCL filter components for allowable grid current harmonics. A passive damping resistor is designed ensuring minimum power loss. The design is validated by simulations in MATLAB/Simulink and experiments on a laboratory prototype.
KW - Passive input filter
KW - Space vector pulse-width modulation (SVPWM)
KW - Total harmonic distortion (THD)
KW - Voltage source inverter (VSI)
UR - http://www.scopus.com/inward/record.url?scp=84900452473&partnerID=8YFLogxK
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U2 - 10.1109/APEC.2014.6803471
DO - 10.1109/APEC.2014.6803471
M3 - Conference contribution
AN - SCOPUS:84900452473
SN - 9781479923250
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1281
EP - 1286
BT - APEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
Y2 - 16 March 2014 through 20 March 2014
ER -