In on grid solar generation system the irradiance causes voltage mismatch as a result of this the nonlinearities increase in the output voltage of the multilevel inverter. The sunlight is not uniform at all places, variation in irradiance is inevitable when it comes to solar power. The Solar power is not similarly circulated there is a change in sun orientation with respect to geometrical positions. The un symmetrical voltage results in unbalancing and introduces more harmonics. The article proposed here analyses a topology where a DC-DC converter is utilized ahead of the multilevel inverter so as to overcome the voltage varieties, thereby reducing the harmonics in the system. Particle swarm optimization is carried out in minimizing the Harmonics. Different observation and studies working stages their simulations and results for both are studied and recorded. Since solar energy is an essential, a complete analysis of this is done. A variety of initial calculations in designing the converter are also carried out. Similar calculations are also carried out informing the solar panel and harvesting the energy. By facilitating MATLAB simulation of particle swarm optimization for firing angles employed in multilevel inverter along with the converter. The measure of total harmonic distortion THD obtained is taken as a measure of evaluation for the performance of this combined system.

在并网太阳能发电系统中，辐照度导致电压失配，其结果是多电平逆变器输出电压的非线性增加。太阳光并非在所有地方都是均匀的，在使用太阳能时，不可避免地会发生辐照度变化。太阳能没有类似地循环，因此太阳方向相对于几何位置发生了变化。不对称的电压导致不平衡并引入更多的谐波。本文提出的文章分析了一种拓扑结构，其中在多电平逆变器之前使用了DC-DC转换器，以克服电压变化，从而减少系统中的谐波。在最小化谐波的情况下进行粒子群优化。研究和记录了不同观察和研究工作阶段的模拟和结果。由于太阳能是必不可少的，因此需要对它进行完整的分析。在设计转换器时，还执行了各种初始计算。还进行了类似的计算，以通知太阳能电池板并收集能量。通过促进MATLAB粒子群优化仿真，对与转换器一起在多电平逆变器中使用的点火角进行了优化。所获得的总谐波失真THD的量度被用作评估该组合系统性能的量度。还进行了类似的计算，以通知太阳能电池板并收集能量。通过促进MATLAB粒子群优化，对与转换器一起在多电平逆变器中使用的点火角进行仿真。获得的总谐波失真THD的量度用作对该组合系统性能进行评估的量度。还进行了类似的计算，以通知太阳能电池板并收集能量。通过促进MATLAB粒子群优化仿真，对与转换器一起在多电平逆变器中使用的点火角进行了优化。获得的总谐波失真THD的量度用作对该组合系统性能进行评估的量度。