Phase Angle Control of High-Frequency Resonant Currents in a Multiple Inverter System for Zone-Control Induction Heating
Phase Angle Control of High-Frequency Resonant Currents in a Multiple Inverter System for Zone-Control Induction Heating
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DOI：
10.1109/tpel.2011.2146278
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发表时间：
2011-04
影响因子：
6.7
通讯作者：
Ha Pham Ngoc;H. Fujita;K. Ozaki;N. Uchida
中科院分区：
文献类型：
--
作者：
Ha Pham Ngoc;H. Fujita;K. Ozaki;N. Uchida
本文提出了一种区域控制感应加热（ZCIH）系统中高频谐振电流的相位角控制方法，该系统由分体工作线圈和多个逆变器组成。 ZCIH系统控制每个线圈电流的幅值，使工件上的温度分布均匀。当线圈电流的相位角调整到与其他线圈电流相同时，可以在较宽的范围内控制线圈电流的幅值。本文从理论上推导了暂态时线圈电流的相角变化，并揭示了相角变化可以被视为一阶响应。使用两区 ZCIH 系统设计并在实验中检验了相位角控制器。可以看出，相位角控制不仅可以在稳态下调节电流相位角，而且可以在瞬态下调节电流相位角。
This paper presents a phase angle control method of high-frequency resonant currents in a zone-control induction heating (ZCIH) system, which consists of split working coils and multiple inverters. The ZCIH system controls the amplitude of each coil current to make the temperature distribution on the workpiece uniform. The amplitude of the coil current can be controlled in a wide range when its phase angle is adjusted to be the same with other coil currents. This paper theoretically derives the phase-angle change of the coil current in transient states, and reveals that the phase-angle change can be considered as a first-order response. A phase-angle controller was designed and examined in experiments using a two-zone ZCIH system. It is clarified that the phase angle control makes it possible to adjust the current phase angle not only in steady states but also in transient states.