Negative Input-Resistance Compensator for a Constant Power Load

A negative input-resistance compensator is designed to stabilize a power electronic brushless dc motor drive with constant power-load characteristics. The strategy is to feed a portion of the changes in the dc-link voltage into the current control loop to modify the system input impedance in the midfrequency range and thereby to damp the input filter. The design process of the compensator and the selection of parameters are described. The impact of the compensator is examined on the motor-controller performance, and finally, the effectiveness of the controller is verified by simulation and experimental testing.

[1]  A.J. Forsyth,et al.  Comparative study of stabilizing controllers for brushless DC motor drive systems , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[2]  Mehrdad Ehsani,et al.  On the Concept of Negative Impedance Instability in the More Electric Aircraft Power Systems with Constant Power Loads , 1999 .

[3]  R. W. Ashton,et al.  The application of feedback linearization techniques to the stabilization of DC-to-DC converters with constant power loads , 1998, ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187).

[4]  Scott D. Sudhoff,et al.  Admittance space stability analysis of power electronic systems , 2000, IEEE Trans. Aerosp. Electron. Syst..

[5]  Ali Emadi,et al.  Modeling and analysis of multiconverter DC power electronic systems using the generalized state-space averaging method , 2004, IEEE Transactions on Industrial Electronics.

[6]  Spiro P. Karatsinides.  Line-of-sight pointing accuracy improvements through analytic boresighting , 2000, IEEE Trans. Aerosp. Electron. Syst..

[7]  Scott D. Sudhoff,et al.  An Experimentally Validated Nonlinear Stabilizing Control for Power Electronics Based Power Systems , 1998 .

[8]  R. D. Middlebrook,et al.  Input filter considerations in design and application of switching regulators. , 1976 .

[9]  M. Belkhayat,et al.  Large signal stability criteria for distributed systems with constant power loads , 1995, Proceedings of PESC '95 - Power Electronics Specialist Conference.

[10]  Hans-Peter Nee,et al.  DC-Link Stabilization and Voltage Sag Ride-Through of Inverter Drives , 2006, IEEE Transactions on Industrial Electronics.

[11]  Henrik Mosskull.  Stabilization of an induction machine drive , 2003 .

[12]  Xiaopeng Wang,et al.  Subsystem-interaction restraint in the two-stage DC distributed power systems with decoupling-controlled-integration structure , 2005, IEEE Trans. Ind. Electron..

[13]  Johann W. Kolar,et al.  Differential Mode Input Filter Design for a Three-Phase Buck-Type PWM Rectifier Based on Modeling of the EMC Test Receiver , 2006, IEEE Transactions on Industrial Electronics.

[14]  M. Ehsani,et al.  Negative impedance stabilizing controls for PWM DC-DC converters using feedback linearization techniques , 2000, Collection of Technical Papers. 35th Intersociety Energy Conversion Engineering Conference and Exhibit (IECEC) (Cat. No.00CH37022).

[15]  Fred C. Lee,et al.  Impedance specifications for stable DC distributed power systems , 2002 .