Simplified reference signal generator equation for single phase grid-tied photovoltaic inverters
Journal
2017 IEEE Conference on Energy Conversion, CENCON 2017
Journal Volume
2018-January
Pages
271-276
Date Issued
2018
Author(s)
Abstract
The current controller for a single phase grid-tied photovoltaic (PV) inverters widely compete with a variety of methods. This paper concentrates on a ramp comparison method which mainly focus on pulse width modulation (PWM). In PWM, the reference with compensated error is compared to a triangle waveform. The desired reference current from the inverter is produced through the generated reference signal. Nevertheless, the conventional method becomes complex in determining the reference signal if the system's ac main voltage varied. Thus, this paper proposes a simplified equation of the reference signal in order to cut down the mathematical complexity. The simplified method is verified using a 5 kVA single phase half-bridge grid-tied inverter. The simulated result shows the difference of the error uncertainty for the desired reference current between conventional and simplified equations is ±0.02 %. © 2017 IEEE.
Subjects
current controller; half-bridge grid-tied inverter; PWM
SDGs
Other Subjects
Electric current control; Energy conversion; Pulse width modulation; Voltage control; Comparison methods; Conventional methods; Current controller; Half bridge; Mathematical complexity; Photovoltaic inverters; Simplified equations; Triangle waveforms; Electric inverters
Type
conference paper