A novel triangular wave quadrature oscillator without passive components for sinusoidal pulse width modulation DC-AC power conversion
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
International Journal of Electrical and Computer Engineering, Volume 13, issue 3
AbstractIn this study, a low-cost quadrature triangle oscillator using a voltage-controlled closed-loop dual operational amplifier (Op-Amp) architecture is proposed. Unlike other typical designs, this oscillator does not require any passive components. The use of an Op-Amp-based circuit is attractive for a triangle oscillator because it is more cost-effective than a microcontroller-based solution. This is especially true for sinusoidal pulse width modulation (SPWM) DC-AC power conversion applications. The slew-rate restriction of an Op-Amp is a useful characteristic for producing a triangle waveform when seen from the perspective of wave shaping techniques. The MC4558 and the JRC4558D are two examples of dual Op-Amps that are evaluated, contrasted, and described in this article. At supply voltages of +7 V and -7 V, the suggested quadrature triangle oscillator that uses Op-Amps MC4558 and JRC4558D has the same oscillation frequency, which is 63 kHz, as demonstrated by simulation and experimental data. The frequency stability is estimated to be around 0.23%. In addition, the findings from the experiment demonstrate that the proposed oscillator is a practical solution for the SPWM DC-AC power conversion application.
Funding Information: The authors would like to express their gratitude to the Indonesia Endowment Fund for Education (Lembaga Pengelola Dana Pendidikan) for their financial support of this study regarding the Multi-Function CNC Machine project. The authors would also like to thank Astra Polytechnic, Aalto University, Universitas Ahmad Dahlan, and President University for their support of this collaboration. Publisher Copyright: © 2023 Institute of Advanced Engineering and Science. All rights reserved.
DC-AC converter, Op-Amp-based oscillator, Pulse width modulation, Quadrature oscillator, Quadrature triangular oscillator, Sinusoidal PWM, Triangular wave generator
Garinto , D , Valerie , T , Yanto , H A , Sutikno , T & Simatupang , J W 2023 , ' A novel triangular wave quadrature oscillator without passive components for sinusoidal pulse width modulation DC-AC power conversion ' , International Journal of Electrical and Computer Engineering , vol. 13 , no. 3 , pp. 3572-3584 . https://doi.org/10.11591/ijece.v13i3.pp3572-3584