| Title |
Single-Phase Inverter System Using New Modulation Method |
| Authors |
Hyoung-Ju Lee ; Hwa-Young Won ; Seung-Beom Lim ; Soon-Chan Hong |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2010.24.5.029 |
| Keywords |
Single-Phase Inverter ; PWM ; PAM ; PWAM ; Variable DC voltage |
| Abstract |
In this paper, we propose a single-phase inverter system using new modulation method. The proposed system is composed of a buck-boost converter and an inverter and controlled by PWAM scheme. PWAM method is a new modulation method which is the incorporation of PWM(Pulse Width Modulation) and PAM(Pulse Amplitude Modulation) methods. The DC voltage which is the input voltage of buck-boost converter is converted into a variable DC voltage by buck-boost converter. Also, the variable DC voltage which is the output voltage of buck-boost converter is converted into a sinusoidal AC voltage by inverter. The input voltage of inverter is processed by PWM switching in PWM section and bypassed in PAM section. By using PWAM method, switching action is not existed in PAM section and thus the times of switching is reduced. As a result, the switching loss can be reduced. |