Simulation of Power Converter with Repetitive Control ...

NATIONAL RESEARCH UNIVERSITY “MOSCOW POWER ENGINEERING INSTITUTE” DEPARTMENT OF ELECTRIC DRIVES

Simulation of Power Converter with Repetitive Control System for Higher Harmonics Elimination Alecksey Anuchin Vasiliy Kulmanov Elena Bychkova Yulia Prudnikova


Traditional and perspective structures of alternating current generation systems Hydro-mechanical CSD costs 80% of total generation system cost Its maintenance needs 80% of total service time


Demands for power quality GOSTR 54073-2010 • THD less than 5% • Magnitude should stay between 1.31 and 1.51 of rated mean value of voltage • Ability to operate with rectifiers and non-linear loads


Topology of the supply system


Control system structure Single phase power converter


Open loop control system structure Single phase power converter


Open loop control system structure


Closed-loop control system structure


Closed-loop control system results


Closed-loop control system results 200

Vout, V V1, V

100 0 -100

t, s -200 0.042

0.043

0.044

0.045

0.046

0.047

0.048

0.049

0.05

iload, A 150 100 50 0 -50 -100

t, s

-150 0.042

0.043

0.044

0.045

0.046

0.047

0.048

0.049

0.05

THD, p.u. 0.1 0.05

t, s 0 0.042

0.043

0.044

0.045

0.046

0.047

0.048

0.049

0.05




Power converter design HybridPACK 2 Infineon


Power converter design Model of the converter


Control system Controller based on F28M3x Concerto microcontroller by Texas Instruments










vout

VDC

Repetitive control system structure


Repetitive control system implementation

CurrDelta = *RealInpPtr[0]; CurrPoint++; CurrPoint &= 63;

// get Delta = Vload_ref - Vload // proceed to the next point // if i==64, then i=0

//calculate point for inverter voltage reference: PrevPoint = CurrPoint-PIntAdv; // point for control with advance // (PIntAdv = 2 Tpwm) PrevPoint &= 63; PInt[PrevPoint] = PInt[PrevPoint] + CurrDelta*PIntKi; //P-Integrator calculation


Repetitive control system results

Fourier

Repetitive control



Fourier

Repetitive control



Fourier

Repetitive control


Conclusions 1. 2. 3. 4.

Totally electrical frequency conversion High reliability High efficiency The proposed control structure allows to achieve good power quality 5. Its performance was tested during simulation and practical experiments 6. Better results for a simpler solution

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