Page 45 - Modern Control of DC-Based Power Systems
P. 45

10                                  Modern Control of DC-Based Power Systems


          the implementation of load control. Nevertheless it presents the advantage
          of being installed on all loads of a network thus treating “locally” the
          impact of each CPL and could therefore be considered a decentralized
          control technique.
             A generation side or feeder control is applicable in situations where
          there is access to the control of the bus supplying the converters. In this
          case, it is possible to implement controls laws on the bus which take into
          account, either through the addition of compensatory terms or specific
          nonlinear control laws, the destabilizing impact of the CPL on the sys-
          tem, and thereby increase the stability of it. Furthermore, being based on
          the interface converters at the generator side/feeder, it allows for using
          commercial off-the-shelf converters as the interface on the load side.




          REFERENCES
          [1] C. Rivetta, A. Emadi, G.A. Williamson, R. Jayabalan, B. Fahimi, Analysis and control
             of a buck DC-DC converter operating with constant power load in sea and undersea
             vehicles, in: Conference Record of the 2004 IEEE Industry Applications Conference,
             2004. 39th IAS Annual Meeting, vol. 2, October 3 7, 2004, pp. 1146, 1153.
          [2] W. Du, J. Zhang, Y. Zhang, Z. Qian, F. Peng, Large signal stability analysis based on
             gyrator model with constant power load, in: 2011 IEEE Power and Energy Society
             General Meeting, July 24 29, 2011, pp. 1, 8.
          [3] K. Seyoung, S.S. Williamson, Negative impedance instability compensation in more
             electric aircraft DC power systems using state space pole placement control, in: 2011
             IEEE Vehicle Power and Propulsion Conference (VPPC), September 6 9, 2011, pp.
             1, 6.
          [4] A.K. AlShanfari, J. Wang, Influence of control bandwidth on stability of permanent
             magnet brushless motor drive for “more electric” aircraft systems, in: 2011
             International Conference on Electrical Machines and Systems (ICEMS), August
             20 23, 2011, pp. 1, 7.
          [5] A.P.N. Tahim, D.J. Pagano, M.L. Heldwein, E. Ponce, Control of interconnected
             power electronic converters in dc distribution systems, in: 2011 Brazilian Power
             Electronics Conference (COBEP), September 11 15, 2011, pp. 269, 274.
          [6] Z. Liu, J. Liu, W. Bao, Y. Zhao, F. Liu, A novel stability criterion of AC power system
             with constant power load, in: 2012 Twenty-Seventh Annual IEEE Applied Power
             Electronics Conference and Exposition (APEC), February 5 9, 2012, pp. 1946,
             1950.
          [7] P. Magne, B. Nahid-Mobarakeh, S. Pierfederici, A design method for a fault-tolerant
             multi-agent stabilizing system for DC microgrids with Constant Power Loads, in:
             2012 IEEE Transportation Electrification Conference and Expo (ITEC), June 18 20,
             2012, pp. 1, 6.
          [8] W. Du, J. Zhang, Y. Zhang, Z. Qian, Stability criterion for cascaded system with con-
             stant power load, IEEE Trans. Power Electron. 28 (4) (April 2013) 1843, 1851.
          [9] S. Sanchez, M. Molinas, Assessment of a stability analysis tool for constant power loads
             in DC-grids, in: Power Electronics and Motion Control Conference (EPE/PEMC),
             2012 15th International, September 4 6, 2012, pp. DS3b.2-1, DS3b.2-5.
   40   41   42   43   44   45   46   47   48   49   50