Feedback Control of Five-Level PWM Rectifier: Application to the Stabilization of DC Voltages of Five-Level NPC Active Power Filter

 

 T. Abdelkrim1, E.M. Berkouk2, K. Benamrane1, T. Benslimane3

  1Applied Research Unit on Renewable Energies, Industrial zone, B.P. 88, Ghardaïa, Algeria.

2Laboratory of Process Control, Polytechnic National School, Street Hassen Badi, El Harrach, B.P. 182 Algiers, Algeria.

3University of M’sila, BP. 166, street Ichbilia, M’sila, Algeria. Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.

 

 

 

Abstract—The purpose of this paper is to develop a control and  regulation  method  of  input  DC  voltages  of  five-level Neutral Point Clamping (NPC) Active Power Filter (APF). This APF is applied for the enhancement of 5,5kV (ph-ph) network power quality by compensation of harmonic currents produced by an induction motor speed variator. In the first part, the authors present a topology of five-level NPC Voltage Source Inverter  (VSI),  and  then,  they  propose  a  model  of  this converter and its PWM control strategy. In the second part, the control strategy of five-level PWM current rectifier is presented. In the third part, to remedy to instability problem of the  input  DC  voltages  of  the  APF,  the  authors  propose feedback control of the five-level PWM rectifier followed by clamping bridge filter. After that, the sliding mode regulator used to control the APF is developed. The application of the proposed feedback control algorithm to the studied cascade offers the possibility of stabilizing the DC voltages of APF. Stable DC bus supply associated with sliding regulator of APF allows getting low-harmonic content network currents with unity power factor. In all over, the instability problem associated with use of multilevel APF is solved. The obtained results are full of promise to use the multilevel APF in high voltage and great power applications.

 

Index Terms—Active power filter, NPC multilevel inverter, feedback control, PWM rectifier, clamping bridge.

 

 

 

 

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