1. High-Efficiency Line Conditioners With Enhanced Performance for Operation With Non-Linear Loads.
- Author
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Soeiro, Thiago B., Petry, Clóvis A., Lopes, Luiz A. C., and Perin, Arnaldo J.
- Subjects
PERFORMANCE evaluation ,CASCADE converters ,ELECTRIC controllers ,ELECTRONIC modulation ,ELECTRIC resistance ,OSCILLATIONS ,TRANSFER functions ,PROTOTYPES ,FEEDBACK control systems - Abstract
This paper presents the analysis, design, and experimental performance verification of a serial type line conditioner. Since it processes only a fraction of the load power, the overall converter losses tend to be lower and the efficiency of the conditioner higher. Regarding the dynamic performance, the line inductance, which results in a positive zero in the transfer function of the plant, is taken into consideration when designing a voltage controller with higher bandwidth for faster response. In addition, a virtual resistance is included in the control of the system to damp oscillations often seen for operations at light load and with nonlinear load conditions. Experimental results obtained with a 10 kVA prototype of a serial line conditioner fed from the load side and the proposed feedback control scheme are presented to demonstrate the superior performance of the line conditioner. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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