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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
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
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公开(公告)号：KR101686489B1
公开(公告)日：2016-12-14
申请号：KR1020150011175
申请日：2015-01-23
Applicant: 전남대학교산학협력단
Abstract: 본발명은멀티레벨인버터에관한것으로, 보다구체적으로는 A암과 B암에스위치가직접연결된형태로스위치내압이낮아소용량에적합하고, DC링크부의전압을두 개의단방향스위치와복수개의양방향스위치를이용하여다중레벨의출력을구현하되, 양방향스위치의개수를증설함으로써출력레벨수를늘릴수 있어출력품질을매우향상시킬수 있는멀티레벨인버터에관한것이다.
Abstract translation: 本发明涉及一种多级单反相器。 更具体地说，本发明涉及能够大大提高输出质量的多级单反相器。 由于A臂和B臂直接连接到开关，所以开关的内部压力很低。 因此，多级单逆变器适用于低容量。 通过使用双向开关和两个单向开关，通过多电平输出实现直流链路部分的电压。 双向开关的数量增加，从而增加输出电平数。
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公开(公告)号：KR1020140032576A
公开(公告)日：2014-03-17
申请号：KR1020120098787
申请日：2012-09-06
Applicant: 엘지이노텍 주식회사 , 전남대학교산학협력단
IPC: H02M3/28
CPC classification number: H02M3/33576 , H02M3/33592 , H02M2001/0048 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
Abstract: One embodiment of the present invention provides a power supply device comprising a transformer having a first coil and a second coil; a half bridge circuit which is connected to a first node, a second node, and both ends of the first coil; and a full bridge circuit which is connected to a third node, a fourth node, and both ends of the second coil. The half bridge circuit comprises a first switch and a second switch which are serially connected between the first node and the second node, and a first capacitor and a second capacitor which are serially connected between the first node and the second node. The present invention is provided to enable leakage inductance of the transformer and a bridge capacitor of the half bridge circuit to form a current resonance tank, thereby reducing a switching loss when a switch turns on/off. [Reference numerals] (120) Control unit
Abstract translation: 本发明的一个实施例提供一种电源装置，其包括具有第一线圈和第二线圈的变压器; 半桥电路，其连接到第一线圈的第一节点，第二节点和两端; 以及连接到第二线圈的第三节点，第四节点和两端的全桥电路。 半桥电路包括串联连接在第一节点和第二节点之间的第一开关和第二开关，以及串联连接在第一节点和第二节点之间的第一电容器和第二电容器。 提供本发明以使得变压器的漏电感和半桥电路的桥式电容器形成电流谐振槽，从而在开关导通/断开时减少开关损耗。 （附图标记）（120）控制单元
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