In general, Photovoltaic (PV) array is not able to generate maximum power automatically, because some partial shading caused by trees, clouds, or buildings. Irradiation imperfections received by the PV array are overcome by applying maximum power point tracking (MPPT) to the output of the PV array. In order to overcome these partial shading problems, this system is employing particle swarm optimization (PSO) as MPPT method. It optimizes the output power of the solar PV array by Zeta converter. Output voltage of MPPT has high rate such that it needs stepdown device to regulate certain voltage. Constant voltage will be the input voltage of buck converter and controlled using adaptive PID. Adaptive control based on model reference adaptive control (MRAC) has design that almost same as the conventional PID structure and it has better performance in several conditions. The proposed system is expected to have stable output and able to perfectly emulate the response of the reference model. From the simulation results, it appears that PSO have high tracking accuracy and high tracking speed to reach maximum power of PV array. In the output voltage regulation, adaptive control does not have a stable error status and consistently follows the set point value.

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The use of DC power systems is increasingly widely used, so we need a system to convert DC power systems, one of which is a buck converter. The buck converter system requires a controller so that the output voltage generated is as desired without any disturbance when the buck is operating. This study examines improvements in buck converter performance using backstepping and SMC controllers. Backstepping controller and SMC are able to maintain stability where it can be shown by looking at the output voltage value of the buck converter. The results of a comparison of the simulation implementation of the backstepping controller and the SMC show that the recovery time of the SMC is faster than backstepping. From this comparison it is also seen that the amount of SMC voltage deviation is smaller than backstepping.

Duwet Village have potential that cannot be underestimated. Duwet Village has a UMK that can produce several superior products, including corn rice (gerit), cassava crackers and bamboo crafts (besek). They need media that can be used for marketing media. However, the lack of promotion of the mainstay products produced by Duwet Village can affect the sustainability Therefore, we need a promotional media for superior products in Duwet village that can improve the quality of as well as support efforts to increase consumers of the mainstay products in Duwet village. Given the beauty of a promotional media but also a very effective promotional media and can bring many benefits to a business. With this problem, we propose the manufacture of displays of superior products from Duwet village. This display will be used as a special place to place corn rice, cassava crackers and bamboo crafts which are the mainstay of Duwet village. This display is very useful as a medium for promoting flagship products to all visitors who come to Duwet village which incidentally will become one of the local tourist destinations in Malang Regency.

This activity aims to design an information system that contains prayer time schedules and other important information that is very useful for musholla Al-Khoir pilgrims. The purpose of the activity is to provide technical guidance to the mosque administrators. The result of this activity is that people in the Tegal Weru area become easier to find out the prayer schedule and other important information related to worship activities