@article{liu_youssef_chescheir_appelboom_poole_arellano_skaggs_2019, title={Effect of controlled drainage on nitrogen fate and transport for a subsurface drained grass field receiving liquid swine lagoon effluent}, volume={217}, ISBN={1873-2283}, DOI={10.1016/j.agwat.2019.02.018}, journal={AGRICULTURAL WATER MANAGEMENT}, author={Liu, Yu and Youssef, Mohamed A. and Chescheir, George M. and Appelboom, Timothy W. and Poole, Chad A. and Arellano, Consuelo and Skaggs, R. Wayne}, year={2019}, pages={440–451} }
 @inproceedings{zhou_liu_bhattacharya_huang_2010, title={New inductor current feedback control with active harmonics injection for inverter stage of solid state transformer}, DOI={10.1109/iecon.2010.5675216}, booktitle={Iecon 2010: 36th annual conference of the ieee industrial electronics society}, author={Zhou, X. H. and Liu, Y. and Bhattacharya, S. and Huang, A.}, year={2010} }
 @inproceedings{li_liu_bhattacharya_huang_2009, title={An optimum PWM strategy for 5-level active NPC (ANPC) converter based on real-time solution for THD minimization}, DOI={10.1109/ecce.2009.5316229}, booktitle={2009 IEEE Energy Conversion Congress and Exposition, Vols 1-6}, author={Li, J. and Liu, Y. and Bhattacharya, S. and Huang, A. Q.}, year={2009}, pages={1903–1909} }
 @inproceedings{liu_z. p._z. g._w. c._s._a._j._m._w._l._et al._2009, title={Controller hardware-in-the-loop validation for a 10 MVA ETO-based STATCOM for wind farm application}, DOI={10.1109/ecce.2009.5316033}, booktitle={2009 IEEE Energy Conversion Congress and Exposition, Vols 1-6}, author={Liu, Y. and Z. P., Liang and Z. G., Song and W. C., Bhattacharya and S., Huang and A., Langston and J., Steurer and M., Litzenberger and W., Anderson and L., Adapa and et al.}, year={2009}, pages={1336–1341} }
 @inproceedings{huang_liu_chen_li_song_2009, title={Emitter turn-off (ETO) thyristor, ETO light converter and their grid applications}, DOI={10.1109/pes.2009.5275226}, booktitle={2009 ieee power & energy society general meeting, vols 1-8}, author={Huang, A. and Liu, Y. and Chen, Q. and Li, J. and Song, W. C.}, year={2009}, pages={1861–1868} }
 @article{liu_hong_huang_2009, title={Real-time algorithm for minimizing THD in multilevel inverters with unequal or varying voltage steps under staircase modulation}, volume={56}, DOI={10.1109/TIE.2009.2015360}, number={6}, journal={IEEE Transactions on Industrial Electronics}, author={Liu, Y. and Hong, H. and Huang, A. Q.}, year={2009}, pages={2249–2258} }
 @article{liu_huang_song_bhattacharya_tan_2009, title={Small-signal model-based control strategy for balancing individual DC capacitor voltages in cascade multilevel inverter-based STATCOM}, volume={56}, DOI={10.1109/TIE.2009.2017101}, number={6}, journal={IEEE Transactions on Industrial Electronics}, author={Liu, Y. and Huang, A. Q. and Song, W. C. and Bhattacharya, S. and Tan, G. J.}, year={2009}, pages={2259–2269} }
 @article{smart grid technologies_2009, volume={3}, DOI={10.1109/MIE.2009.932583}, number={2}, journal={IEEE Industrial Electronics Magazine}, year={2009}, pages={16–23} }
 @inproceedings{liu_bhattacharya_song_huang_2008, title={Control strategy for cascade multilevel inverter based STATCOM with optimal combination modulation}, DOI={10.1109/pesc.2008.4592734}, booktitle={2008 IEEE Power Electronics Specialists Conference}, author={Liu, Y. and Bhattacharya, S. and Song, W. C. and Huang, A. Q.}, year={2008}, pages={4812–4818} }
 @article{liu_luo_2008, title={Trinary hybrid 81-level multilevel inverter for motor drive with zero common-mode voltage}, volume={55}, DOI={10.1109/TIE.2007.909072}, number={3}, journal={IEEE Transactions on Industrial Electronics}, author={Liu, Y. and Luo, F. L.}, year={2008}, pages={1014–1021} }