TY - JOUR
T1 - FM/PWM control scheme in class DE inverter
AU - Sekiya, Hiroo
AU - Koizumi, Hirotaka
AU - Mori, Shinsaku
AU - Sasase, Iwao
AU - Lu, Jianming
AU - Yahagi, Takashi
N1 - Funding Information:
Manuscript received May 21, 2001; revised November 29, 2003. This work was supported in part by the Support Center for Advanced Telecommunications Techonology Research (SCAT), The Telecommunications Advancement Foundation (TAF), and The Yazaki Memorial Foundation for Science and Technology. This paper was presented in part at the IEEE Symposium on Circuits and Systems, 2001. This paper was recommended by Associate Editor D. Czarkowski.
PY - 2004
Y1 - 2004
N2 - This paper presents a new control scheme for a Class DE inverter, that is, frequency modulation/pulsewidth modulation (FM/PWM) control. Further, the FM/PWM controlled Class DE inverter is analyzed and we clarify performance characteristics. Since the FM/PWM controlled inverter has two control parameters, namely, the switching frequency and the switch-on duty ratio, it has one more degree of freedom for the control than the inverter with the conventional control scheme. The increased degree of freedom is used to minimize the switching losses. Therefore, it is possible to control the output power with high power-conversion efficiency for wide-range control. Carrying out the circuit experiments, we confirm that the experimental results agree well with the theoretical predictions quantitatively. For example, the proposed controlled inverter can control the output voltage from 56% to 191% of the optimum one, which is designed for 1.8 W at 1.0 MHz, with maintaining over 90% power-conversion efficiency.
AB - This paper presents a new control scheme for a Class DE inverter, that is, frequency modulation/pulsewidth modulation (FM/PWM) control. Further, the FM/PWM controlled Class DE inverter is analyzed and we clarify performance characteristics. Since the FM/PWM controlled inverter has two control parameters, namely, the switching frequency and the switch-on duty ratio, it has one more degree of freedom for the control than the inverter with the conventional control scheme. The increased degree of freedom is used to minimize the switching losses. Therefore, it is possible to control the output power with high power-conversion efficiency for wide-range control. Carrying out the circuit experiments, we confirm that the experimental results agree well with the theoretical predictions quantitatively. For example, the proposed controlled inverter can control the output voltage from 56% to 191% of the optimum one, which is designed for 1.8 W at 1.0 MHz, with maintaining over 90% power-conversion efficiency.
UR - http://www.scopus.com/inward/record.url?scp=3843085109&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=3843085109&partnerID=8YFLogxK
U2 - 10.1109/TCSI.2004.830688
DO - 10.1109/TCSI.2004.830688
M3 - Article
AN - SCOPUS:3843085109
SN - 1549-8328
VL - 51
SP - 1250
EP - 1260
JO - IEEE Transactions on Circuits and Systems I: Regular Papers
JF - IEEE Transactions on Circuits and Systems I: Regular Papers
IS - 7
ER -