基于海马优化器的光伏-温差混合系统重构

Reconfiguration of PV-TEG Hybrid System Based on Sea Horse Optimizer

部分遮蔽(partial shading conditions,PSC)是导致光伏(photovoltaic,PV)–温差(thermoelectricgeneration,TEG)混合系统(PV-TEG)输出功率损耗和组件失配的主要原因之一。为了提升PSC下PV-TEG混合系统的发电效率,提出一种基于海马优化器(sea horse optimizer,SHO)的PV-TEG混合系统重构方法。该方法以PV-TEG混合系统的输出功率为目标函数,利用SHO调整电气开关动作来改变混合系统阵列中PV-TEG组件的位置,以提高系统整体功率输出。为验证SHO的可行性和优越性,在实际PSC条件和标准PSC条件下对4×4阵列、9×9阵列和15×9阵列进行仿真分析,并与粒子群优化算法、遗传算法、人工蜂群算法和蚁群算法进行全面对比(失配损耗、平均输出功率和开关动作数量),证明采用SHO算法可以缓解遮蔽带来的影响,提升系统功率。仿真结果表明,通过SHO重构后的PV-TEG混合系统功率在4×4阵列中提高38.36%,在9×9阵列中提高20.74%,在15×9阵列中提高21.14%。此外,基于RTLAB平台进行硬件在环实验(hardware in the loop,HIL),验证了PSC下SHO应用于PV-TEG混合系统的硬件可行性。

Partial shading conditions(PSC)is one of the major causes of the output power loss and component mismatch in the photovoltaic(PV)and thermoelectric generation(TEG)(PV-TEG)hybrid systems.In order to improve the power generation efficiency of the PV-TEG hybrid system under the partial shading conditions(PSC),a reconfiguration method of the PV-TEG hybrid system based on the sea horse optimizer(SHO)is proposed in this paper.The method takes the output power of the PV-TEG hybrid system as the objective function.By adjusting the electrical switching,the position of the PV-TEG module in the hybrid system array is changed by using the SHO so as to improve the overall system power output.In order to verify the feasibility and superiority of the SHO,the 4×4 array is simulated under the actual PSC and the 9×9 array and the 15×9 array are under the standard PSC.The results are compared with those of the particle swarm optimization(PSO),the genetic algorithm(GA),the artificial bee colony(ABC),and the ant colony optimization(ACO)(in the mismatch loss,the average output power and the number of switching actions).It is proved that the SHO algorithm can be used to alleviate the influence of shading and improve the system power.Simulation results show that the power of the PV-TEG hybrid system reconstructed by the SHO is improved by 38.36%in the 4×4 array,by 20.74%in the 9×9 array and 21.14%in the 15×9 array.Furthermore,the hardware in the loop(HIL)test is conducted based on the RTLAB platform to verify the hardware feasibility of the SHO in the PV-TEG hybrid system under the PSC.