Abstract
This chapter presents robust control of an islanded DC microgrid in the presence of CPL using sliding mode control. A robust sliding mode control scheme is proposed to ensure system stability in the presence of CPL and the desired DC bus voltage regulation. Furthermore, a charging/discharging algorithm is implemented in the control loops of BDC to facilitate three mode charging of the battery bank. The test system consists of solar PV arrays interfaced to dc bus through dc/dc boost converters, energy storage system (lead-acid batteries) interfaced through a BDC, and a mixed load (Resistive, voltage regulator and a speed controlled drive). Tightly regulated voltage regulator and a speed controlled dc/dc drive, both represent CPLs in the system. The proposed theory is validated through simulation studies and experimental results. It is shown through simulation studies and experimental results that the proposed control scheme ensures stabilized dc bus voltage, i.e. it does not show any destabilizing effect of CPLs, under different operating conditions. It has been found that the proposed control ensures voltage regulation of less than 5 % and is robust to changes in the load.
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References
Kwasinski, A., Onwuchekwa, C.N.: Dynamic behavior and stabilization of dc microgrids with instantaneous constant-power loads. IEEE Trans. Power Electron. 26(3), 822–834 (2011)
Huddy, S.R., Skufca, J.D.: Amplitude death solutions for stabilization of dc microgrids with instantaneous constant-power loads. IEEE Trans. Power Electron. 28(1), 247–253 (2013)
Magne, P., Nahid-Mobarakeh, B., Pierfederici, S.: Dynamic consideration of dc microgrids with constant power loads and active damping systema design method for fault-tolerant stabilizing system. IEEE J. Emerg. Sel. Top. Power Electron. 2(3), 562–570 (2014)
Sulligoi, G., Bosich, D., Giadrossi, G., Zhu, L., Cupelli, M., Monti, A.: Multiconverter medium voltage dc power systems on ships: constant-power loads instability solution using linearization via state feedback control. IEEE Trans. Smart Grid 5(5), 2543–2552 (2014)
Radwan, A.A.A., Mohamed, Y.R.: Linear active stabilization of converter-dominated dc microgrids. IEEE Trans. Smart Grid 3(1), 203–216 (2012)
Tabari, M., Yazdani, A.: A mathematical model for stability analysis of a dc distribution system for power system integration of plug-in electric vehicles. IEEE Trans. Veh. Technol. 64(5), 1729–1738 (2015)
Ahmadi, R., Ferdowsi, M.: Improving the performance of a line regulating converter in a converter-dominated dc microgrid system. IEEE Trans. Smart Grid 5(5), 2553–2563 (2014)
Tahim, A., Pagano, D., Lenz, E., Stramosk, V.: Modeling and stability analysis of islanded dc microgrids under droop control. IEEE Trans. Power Electron. 30(8), 4597–4607 (2015)
Magne, P., Nahid-Mobarakeh, B., Pierfederici, S.: General active global stabilization of multiloads dc-power networks. IEEE Trans. Power Electron. 27(4), 1788–1798 (2012)
Magne, P., Nahid-Mobarakeh, B., Pierfederici, S.: Active stabilization of dc microgrids without remote sensors for more electric aircraft. IEEE Trans. Ind. Appl. 49(5), 2352–2360 (2013)
Singh, S., Kumar, V., Fulwani, D.: Mitigation of destabilizing effect of cpls in island dc microgrid using nonlinear control. IET Power Electron. (provisionally accepted)
Gautam, A., Singh, S., Fulwani, D.: Dc bus voltage regulation in the presence of constant power load using sliding mode controlled dc-dc bi-directional converter interfaced storage unit. In: 2015 IEEE First International Conference on DC Microgrids (ICDCM), pp. 257–262 (2015)
Chen, Q.: Stability analysis of paralleled rectifier systems. In: 17th International Telecommunications Energy Conference, 1995. INTELEC’95., pp. 35–40. IEEE (1995)
Anand, S., Fernandes, B.G., Guerrero, J.M.: Distributed control to ensure proportional load sharing and improve voltage regulation in low-voltage dc microgrids. IEEE Trans. Power Electron. 28(4), 1900–1913 (2013)
Khorsandi, A., Ashourloo, M., Mokhtari, H.: An adaptive droop control method for low voltage dc microgrids. In: 2014 5th Power Electronics, Drive Systems and Technologies Conference (PEDSTC), pp. 84–89. IEEE (2014)
Santi, E., Monti, A., Li, D., Proddutur, K., Dougal, R.A.: Synergetic control for dc-dc boost converter: implementation options. IEEE Trans. Ind. Appl. 39(6), 1803–1813 (2003)
Mattavelli, P., Rossetto, L., Spiazzi, G., Tenti, P.: General-purpose sliding-mode controller for dc/dc converter applications. In: 24th Annual IEEE Power Electronics Specialists Conference, 1993. PESC’93 Record., pp. 609–615. IEEE (1993)
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Fulwani, D.K., Singh, S. (2017). Robust Control of an Islanded DC Microgrid in Presence of CPL. In: Mitigation of Negative Impedance Instabilities in DC Distribution Systems. SpringerBriefs in Applied Sciences and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-10-2071-1_5
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DOI: https://doi.org/10.1007/978-981-10-2071-1_5
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