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. 2020 Aug 9;6(8):e04648.
doi: 10.1016/j.heliyon.2020.e04648. eCollection 2020 Aug.

Optimization of P& PI controller parameters for variable speed drive systems using a flower pollination algorithm

Safwan Nadweh  1 , Ola Khaddam  1 , Ghassan Hayek  1 , Bassam Atieh  2 , Hassan Haes Alhelou  1
Affiliations

Optimization of P& PI controller parameters for variable speed drive systems using a flower pollination algorithm

Safwan Nadweh et al. Heliyon. .

Abstract

In this study, a novel flower pollination algorithm (FPA) has been suggested for optimal tuning of P and PI controllers included in a variable speed drive VSD system control circuit. In addition to the manual tuning of controllers' parameters, several optimization algorithms like GA, PSO, GWO have been used for controllers optimal tuning in different studies. In this study, the errors caused by grid side current harmonic distortion in the VSD system have been used depending on SPWM technique to generate switching signals for a four-quadrant chopper circuit that acts like a filter and compensates the harmonic content in the grid current and smooth ripples in both DC-link current and voltage. The studied drive system and control circuit have been modeled using Matlab/Simulink, then it was linked with the proposed algorithm and tested under different operation conditions. A hardware laboratory model has been built and tested in order to confirm the validity of this study. Comparing the proposed algorithm with other optimization algorithms shows that the suggested algorithm outperforms other algorithms in improving the time response of the VSD system, reducing total harmonic distortion THD of grid current, and reducing ripple factor PF.

Keywords: Computer-aided engineering; Electrical engineering; Energy; Flower pollination algorithm (FPA); Four quadrant chopper; Industrial engineering; Optimization algorithms; Power quality; Variable speed drive systems (VSDS).

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Figures

Figure 1
Figure 1
Schematic diagram of Variable Speed Drive System.
Figure 2
Figure 2
Control circuit model.
Figure 3
Figure 3
The flow chart of genetic algorithm.
Figure 4
Figure 4
Forms of flower pollination.
Figure 5
Figure 5
Flow chart of flower pollination algorithm.
Figure 6
Figure 6
Grid current using both GA &FPA algorithms.
Figure 7
Figure 7
DC-link current in both GA &FPA algorithms.
Figure 8
Figure 8
Rectifier output voltage in studied system.
Figure 9
Figure 9
Dc-link voltage (output voltage).
Figure 10
Figure 10
Transistor voltages.
Figure 11
Figure 11
Implemented laboratory model.
Figure 12
Figure 12
Inverter current at (resistive – inductance) load.
Figure 13
Figure 13
Control signals for chopper transistors.
Figure 14
Figure 14
Dc-link voltage.
See this image and copyright information in PMC

References

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