Acta Medica Okayama 32 2 1996 Pulse-density-modulated power control of a 4 kW, 450 kHz voltage-source inverter for induction melting applications 279 286 EN Hideaki Fujita Hirofumi Akagi K. Sano R. H. Leonard <p>This paper presents a 4 kW, 450 kHz voltage-source inverter with a series resonant circuit for induction melting applications, which is characterized by the power control based on pulse density modulation (PDM). The pulse-density-modulated inverter makes an induction melting system simple and compact, thus leading to higher efficiency. A modulation strategy is proposed to realize the induction melting system capable of operation at the frequency and power level of interest. Some interesting experimental results are shown to verify the validity of the concept </p> No potential conflict of interest relevant to this article was reported.