**1. Introduction**

Solar photovoltaic is the most widely used renewable energy source with relatively high accessibility in many parts of the world [1–4]. In recent years, the development of the solar PV market and the use of this technology worldwide has been increasing at annual rates of 35–40%. This rapid expansion has developed rapidly due to a sharp decline in PV prices and increased attention to the importance of sustainable energy [4–8].

In addition, the market development of solar photovoltaic (PV) applications is increasing, due to their contributions to environmental protection, and use as an alternative sustainable solution to the energy crisis. In the short and long term, PV technology is considered the main source of electricity generation in various applications such as [9–16] solar desalination, solar cookers, solar cooling, and air conditioning. In PV technology, the problem that arises is the operation of PV panels around their maximum power points (MPP). Regardless of the applications used, stand-alone or grid-connected, the design of a power matching system (DC/DC converter) of the PV panels with its MPPT control (maximum power point tracking) [17, 18] is necessary to produce the maximum electrical energy during the operation of these applications [19]. In the literature, several MPPT controls are proposed [20, 21]. Each method has its advantages and disadvantages. Currently, in the context of PV energy applications that we are developing in the framework of national and international projects, we use the perturb and observe control [21–24], due to its ease of implementation and accuracy of convergence to the maximum power point of the PV panels.

In this chapter, we analyze the maximum power point (MPP) of PV panels and the PV systems that maximize this power during the operation of an application. Particular attention is paid to the description of the MPPT control, the perturb and observe type, and its application in PV solar cookers, with a power of 600 Wp.
