@thesis{thesis,
		author={Pratama Putera  Rizki and Rahman  Farrel Fadhur},
		title ={Perbandingan Perbaikan Tegangan Dip Menggunakan Dynamic Voltage Restorer dan Variable Frequency Drive di PLTA Maninjau},
		year={2021},
		url={http://156.67.221.169/3847/},
		abstract={The dip voltage discussed in this thesis is caused by the starting current of a 75 kW motor, a large starting current causes a voltage dip when the motor will operate. To correct the voltage flicker, it is simulated using Matlab Simulink using Dynamic Voltage Restorer (DVR) and Variable Frequency Drive (VFD). In the use of the DVR, it has a way of working, namely detecting voltage dips by comparing the input voltage with a reference voltage, then the voltage will be injected into the load voltage that experiences a dip. While the use of VFD so that the starting current of the motor is not large, a frequency control of 25 Hz is carried out at 0-0.3 seconds after which the frequency returns to 50 Hz. Comparison of the DVR and VFD dip voltage improvement is able to improve the dip voltage of 11.16% on the DVR and 20.65% on the VFD. Characteristics of the DVR, the load voltage becomes normal at 379.72 V after 0.243 seconds while the VFD value of the load voltage and motor supply fluctuates in the range of 367 V-379.72 V.}
		}