The Photovoltaic (PV) panels used to convert electrical energy from the Sun have conversion efficiency only up to 18%. One of the ways to increase their conversion efficiency is accurate method of extracting maximum power from PV panel by spotting the Maximum Power Point (MPP). As the solar radiation is not constant always, the available maximum power also varies throughout the day and hence Maximum Power Point Tracking (MPPT) becomes continual and essential. Perturb and Observe (P&O) is one of the algorithms used for MPPT and is renowned due to its simplicity. Wrong tracking direction, less convergence speed and oscillations around MPP are the drawbacks of this algorithm which decelerate its usage to the maximum extent. Many researchers develop proven concepts in the literature to overcome these drawbacks. Without comparative assessment, using the developed concepts will not meet the expected outcome for PV panel designer. Without detailed review of recent developments, the researchers may not find scope for future developments towards excellence in this area. The students to become researchers require detail analysis of original concepts with present progresses. To fulfill these requirements, several literature published in the popular journals between the years 2012 and 2019 are reviewed in this paper. The reviewed papers are compared with respect to simplicity of algorithms, type which they belong, number of sensors used and control strategy adopted with convergence speed qualified. This review is expected to render suitable reference for understanding, selection and developments for the students, designers and researchers.

用于转换来自太阳的电能的光伏（PV）面板的转换效率仅高达18％。提高转换效率的方法之一是通过发现最大功率点（MPP）从PV面板中提取最大功率的精确方法。由于太阳辐射并不总是恒定不变的，因此可用的最大功率也会在一天中变化，因此最大功率点跟踪（MPPT）变得持续且必要。Perturb and Observe（P＆O）是用于MPPT的算法之一，并且由于其简单性而闻名。错误的跟踪方向，较小的收敛速度和MPP周围的振荡是该算法的缺点，它最大程度地降低了其使用率。许多研究人员在文献中开发了经过验证的概念来克服这些缺点。没有比较评估，使用已开发的概念将无法满足光伏面板设计人员的预期结果。如果不对最新的发展情况进行详细的回顾，研究人员可能找不到在该领域追求卓越的未来发展空间。要成为研究人员的学生需要对具有当前进展的原始概念进行详细分析。为了满足这些要求，本文回顾了2012年至2019年间在流行期刊上发表的几种文献。对所审查的论文进行比较，包括算法的简单性，算法的类型，使用的传感器数量以及采用收敛速度合格的控制策略。预期该评论将为学生，设计师和研究人员的理解，选择和发展提供适当的参考。