Title :
A comparison of output envelope waveforms of the delta-sigma modulated class D series resonant inverter
Author :
Koizumi, Hirotaka ; Kurokawa, Kosuke ; Mori, Shinsaku
Author_Institution :
Dept. of Elec. & Electron. Eng., Tokyo Univ. of Agric. & Tech.
Abstract :
The output envelope waveforms of the delta-sigma modulated class D series resonant inverter is analyzed, compared, and discussed based on the simulation results with Matlab Simulink simulator. The class D inverter operating at 200 kHz generates 50 Hz envelope waveform through the additional switching legs. Firstly, the relationship between the feed-back gain of the delta-sigma modulator and the output envelope waveforms is clarified. Secondly, the variable parameters are expanded to the loaded Q-factor QL. For QL = 10 to 10000, the output waveforms are analyzed. The simulation results show that THD is held under 3 % from QL = 50 to 100. The obtained envelope waveform is highly qualified as an ac power source
Keywords :
Q-factor; delta-sigma modulation; resonant invertors; 200 kHz; 50 Hz; Matlab Simulink simulator; Q-factor; class D series resonant inverter; delta-sigma modulated inverter; delta-sigma modulator; output envelope waveforms; switching legs; Analytical models; Circuit simulation; Delta modulation; Frequency; Power generation; Q factor; Resonance; Resonant inverters; Zero current switching; Zero voltage switching;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1692570
