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No abstract

Krisis energi pada masa ini, membuat kita belajar akan memanfaatkan atau mengembangkan suatu sumber daya energi terbarukan untuk mengurangi penggunaan bahan bakar fossil yang tidak dapat diperbaharui layaknya seperti batubara. Penggunaan sumber daya energi terbarukan ini sangat ramah lingkungan serta bisa meminimalisir dampak buruk dari penggunaan bahan bakar fosil untuk pembangkit listrik. Metode dalam penelitian sistem monitoring energi solar dan wind kincir vertical dengan sistem hybrid berbasis internet of things. Memonitoring kedua pembangkit solar dan wind dengan sistem hybrid mengunakan mikrokontroller Arduino Uno sebagai pengolahan data yang di dapat dari sensor yang digunakan untuk penelitian dan NodeMCU yang digunakan sebagai proses pengiriman datanya, data hasil tersebut dapat dimonitoring melalui smartphone ataupun pc dengan sebuah website.Hasil pengujian sistem monitoring energi solar dan wind kincir vertikal dengan sistem hybrid berbasis internet of things, dapat membaca keluaran yang diberikan oleh kedua pembangkit energi solar dan wind. Sensor yang digunakan dalam pengujian ini Sensor tegangan DC yang memiliki galat rata – rata 0,085%, sensor arus DC ACS712 30 yang memiliki galat rata – rata 0,14%, sensor tegangan AC ZMPT101B yang memiliki galat rata – rata 0.37%, sensor arus AC712 5A yg memiliki galat rata – rata 80.9%, dari ketiga sensor tersebut bisa dikatan pembacaan sensor yang presesi sedangkan penggunaan ACS712 5A dikatan tidak presisi karena arus yang tebaca oleh sensor bisa kurang dari 0A atapun dalam pembacaan mA.

Regulating the output voltage based on the desired set point is useful for many applications. However, getting the optimal value using fast computation with minimal error is still challenging. This paper aims to design, simulate, and implement a second-order Buck-Boost DC-DC converter circuit so that the voltage result according to the desired set point can be achieved. Initially, testing is conducted using Matlab Simulink. Then, Proteus is used to test the computation of the program on embedded systems in which the result is implemented in C. In low voltage power electronics applications, this approach has never been used to determine the output form. To determine the value of Kp, Ki, dan Kd, PID, Ziger Nichos (Guo, 2002). method is used. Meanwhile, tuning is done through Matlab. For simulation on Proteus, the output is tested by setting the setpoint values of 3.0, 2.5, and 1.7 volts. This aims to see the pattern of changes in the simulation. The simulation results with Proteus show that they have similar peak values but with different overshoot values. This is because the simulation must pass the reference voltage before it drops to the desired setpoint value. Proteus simulation can also help to prove embedded system programs are running correctly. On the other hand, the value of 1.7 volts is used as a setpoint in device implementation. This is due to the determination that the setpoint voltage in the implementation does not exceed the value of the source/power supply. The results show that for the rise time value of 378,770 ms, Overshoot and settling time are 11.798% and 0, respectively. This means the result produces an optimal value which is a return to the initial target. The optimal factor is assessed from the ability to minimize existing errors as well as having the shortest possible computational process.

This paper aims to modification the transducer ultrasonic for measuring the distance to develop measure time of flight in the pipe with simultaneous method. To implement the application, we try to develop the microcontroller with one command transmitter and one command receiver in the same time, different from the conventional way, the transmitter and receiver work with consecutively. We try to reduce the delay time in two different transducers. In industrial, the symmetries profile must be ensured the profile always laminar. In this research, we try to use one path configuration. The result with the reference hot wire, we got the 27.76 percentage the difference of result. This is because the hot wire can measure the one path of flow in the one way of dot point.