Nadweh Safwan, Khaddam Ola, Hayek Ghassan, Atieh Bassam, Haes Alhelou Hassan
Power Electrical Engineering, Tishreen University, Lattakia, Syria.
Mechatronics Engineering, Manara University, Lattakia, Syria.
Heliyon. 2020 Aug 9;6(8):e04648. doi: 10.1016/j.heliyon.2020.e04648. eCollection 2020 Aug.
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.
在本研究中，提出了一种新颖的花朵授粉算法（FPA），用于对变速驱动（VSD）系统控制电路中的比例（P）控制器和比例积分（PI）控制器进行优化整定。除了手动整定控制器参数外，在不同的研究中，还使用了遗传算法（GA）、粒子群优化算法（PSO）、灰狼优化算法（GWO）等多种优化算法对控制器进行优化整定。在本研究中，基于空间矢量脉宽调制（SPWM）技术，利用VSD系统中电网侧电流谐波畸变所引起的误差，来生成用于四象限斩波器电路的开关信号，该斩波器电路起到滤波器的作用，可补偿电网电流中的谐波含量，并平滑直流母线电流和电压中的纹波。所研究的驱动系统和控制电路已使用Matlab/Simulink进行建模，然后将其与所提出的算法相连接，并在不同的运行条件下进行测试。为了证实本研究的有效性，搭建并测试了一个硬件实验室模型。将所提出的算法与其他优化算法进行比较表明，该算法在改善VSD系统的时间响应、降低电网电流的总谐波畸变率（THD）以及降低纹波因数（PF）方面优于其他算法。
