公开(公告)号：KR101308411B1

公开(公告)日：2013-09-13

申请号：KR1020120035100

申请日：2012-04-04

Applicant: 전남대학교산학협력단

Inventor： 박성준 ,  최우석 ,  이용재

IPC: H05B6/02 ,  H05B6/06

CPC classification number: H05B6/06 ,  H02M7/4826 ,  H02M2007/4815 ,  H05B6/04 ,  Y02B70/1441

Abstract: PURPOSE: A high-speed resonance point tracking method and an induction heating system using the method provide the maximum efficiency of induction heating by rapidly tracking a resonant frequency. CONSTITUTION: Power is supplied to a load terminal (40) by operating an inverter part (30) according to a predetermined frequency during a predetermined time. A sensing part (50) detects the voltage waveform and current waveform of the load terminal and transmits a detection signal to a control part (20). The control part generates a square wave pulse signal according to the comparison of the voltage waveform and current waveform transmitted from the control part and the ground. The inverter part is operated according to an arbitrary frequency during a predetermined time before the square wave pulse signal is generated by the comparison of the detection signal and the ground. The inverter part is operated by a switching signal according to the square wave pulse signal caused by the comparison of the sensed detection signal and the ground after a predetermined time passes. [Reference numerals] (12) Rectification part AC/DC; (20) Control part (MCU, FPGA); (21) Basic signal generator; (22) Resonance signal generator; (23) Conversion signal processing part; (24) Switching signal generation part; (30) Inverter part DC/AC; (40) R-L-C load terminal; (50) Voltage/current sensing part

Abstract translation: 目的：高速共振点跟踪方法和使用该方法的感应加热系统通过快速跟踪谐振频率提供感应加热的最大效率。 构成：通过在预定时间期间按照预定频率操作逆变器部件（30），向负载端子（40）供电。 感测部件（50）检测负载端子的电压波形和电流波形，并将检测信号发送到控制部件（20）。 控制部分根据电压波形与从控制部分和地面传输的电流波形的比较产生方波脉冲信号。 在通过检测信号和地之间的比较产生方波脉冲信号之前的预定时间内，逆变器部分根据任意频率进行操作。 逆变器部分根据在预定时间过去之后由感测的检测信号与地面的比较引起的方波脉冲信号由开关信号操作。 （附图标记）（12）整流部AC / DC; （20）控制部分（MCU，FPGA）; （21）基本信号发生器; （22）谐振信号发生器; （23）转换信号处理部; （24）开关信号生成部; （30）逆变器部分DC / AC; （40）R-L-C负载端子; （50）电压/电流检测部件