Design of an FPGA-Based 3-Phase Sinusoidal PWM Controller

Guoxiang, Chang; Wang, Chengyuan; Dian-ling, Guo; Xia, Jiakuan; Liu, Xiuling

doi:10.1109/chicc.2006.280878

Cited by 1 publication

(1 citation statement)

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“…Rangkaian analog terdiri dari komponen diskrit seperti kapasitor, resistor dan chip op-amp, tapi kekurangan menggunakan rangkaian ini adalah tidak dapat diubah dengan mudah kemampuan kerjanya karena harus mengganti komponen terlebih dahulu. Rangkaian digital terutama yang memakai perangkat sistim embedded seperti mikrokontroler AVR, ARM, chip DSP, chip Field Programmable Gate Array (FPGA) [3], dapat diprogram untuk menghasilkan bentuk gelombang PWM, keuntungan rangkaian digital untuk menghasilkan bentuk gelombang PWM adalah pada kontrolnya dan modifikasinya fleksibel dan mudah. Dengan improvisasi yang berkelanjutan pada performa switching komponen elektronik, teknologi PWM berkembang dengan pesat.…”

Section: Pendahuluanunclassified

Rancang Bangun Generator PWM Berbasis Mikrokontroler AVR ATmega

Firdaus

Chadri

Nasrullah

2020

EJI

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PWM is widely used in the fields of automatic control, power electronics and cellular communications. Previous research designed a PWM generator using the OMAP-L138 chip to produce a simple, high-precision, flexible and portable circuit. Another generator uses a single board computer FEZ Panda III and an Arduino board for power inverters. While the FPGA Spartan 3 is also used to generate PWM signals that can vary the duty cycle. In this paper, the PWM signal generator is made using the AVR ATmega8535 microcontroller where the frequency parameters and the output signal duty cycle can be adjusted via the keypad. The signal is tested using a measuring instrument for its accuracy. The ATmega AVR microcontroller family has a timer / counter with one of its operating modes, namely fast PWM. In order to change the frequency and duty cycle as desired, the ICR register is used to store the TOP value and the OCR register for the MAX value. The OCR value determine the duty cycle and the ICR value specify the frequency. The results are the higher the PWM frequency, the greater the value of the measured and desired frequency difference, this is because the large frequency makes ICR register value becomes small even though the frequency divider at minimum value. The difference between measurements and calculations on the Duty Cycle gives the result under 1%. This difference also occurs due to the rounding of the ICR and OCR values, but at a frequency of 20 kHz and a 25% Duty Cycle where the ICR value is 599 and OCR is 116 resulting in the minimum difference in frequency and Duty Cycle. From the experiments that have been carried out, the design of the PWM generator based on the AVR ATmega microcontroller has been successfully realized

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Section: Pendahuluanunclassified