A New Current Phasor-Controlled ZVS Twin Half-Bridge High-Frequency Resonant Inverter for Induction Heating

作者：Mishima Tomokazu^*; Takami Chikanori; Nakaoka Mutsuo

来源：IEEE Transactions on Industrial Electronics, 2014, 61(5): 2531-2545.

DOI：10.1109/TIE.2013.2274420

• Asymmetrical pulsewidth modulation (PWM)
• current phasor
• high frequency (HF) resonant (HF-R) inverter
• induction heating (IH)
• phase shift (PS) angle control
• zero voltage soft switching (ZVS)

A novel soft-switching high-frequency (HF) resonant (HF-R) inverter for induction heating (IH) applications is presented in this paper. By adopting the current phasor control of changing a phase shift (PS) angle between two half-bridge inverter units, the IH load resonant current can be regulated continuously under the condition of wide-range soft-switching operations. In addition to this, the dual-mode power regulation scheme-based PS angle control and asymmetrical pulsewidth modulation in one inverter unit is proposed for improving the efficiency in low output power settings. The essential performances on the output power regulation and soft-switching operations are demonstrated in an experiment using its 1-kW 60-kHz HF-R inverter prototype, and then, the topological validity is evaluated from a practical point of view.

• 出版日期2014-5