船舶甲板感应加热矫平机电能变换及能量转换系统  

Electrical Energy Conversion and Energy Transformation System of Ship Deck Induction Heating Leveling Machine

作　　者：李俊南 方臣富[1] 杨志东[1] 秦梵超 陈鑫毅 孙宏伟[2] LI Junnan;FANG Chenfu;YANG Zhidong;QIN Fanchao;CHEN Xinyi;SUN Hongwei(School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Jiangsu Automation Research Institute,Lianyungang 222006,China)

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003 [2]江苏自动化研究所,江苏连云港222006

出　　处：《电焊机》2022年第5期74-83,90,共11页Electric Welding Machine

基　　金：工信部高技术船舶科研项目([2019]360);工信部高技术船舶科研项目(MC-201917-C09)。

摘　　要：船厂以往均采用火焰加热工艺矫平工艺平整甲板,容易引发火灾且平整效率较低。感应加热矫平工艺采用感应加热矫平机将三相正弦波高压小电流交流电变换成单相高频矩形波低压大电流交流电,并通过电磁、磁电转换在钢板中产生涡流热能和磁滞热能,快速、精准、可控地加热甲板特定区域。感应加热矫平机由固定式调功器、移动式调频器和小车式感应加热器通过电缆串联组成,突破了不能高效长距离输送高频低压大电流交流电的技术瓶颈;研发了变频器频率跟踪、调节及锁相技术,保证了输出回路为准纯电阻性态,高效利用电网电能;设计了小车式感应加热器,可按需移至任意区域施行矫平工艺,参数可就近调节。实验室测试和造船厂应用表明:船舶甲板感应加热矫平机电能变换及能量转换系统工作稳定可靠,可始终保证矫平机工作在准谐振状态,使感应加热器输出功率因数接近为1。Shipyards have previously used flame heating processes to level decks,which are prone to fires and have low lev‐eling efficiency.The induction heating leveling process adopts an induction heating leveling machine to convert three-phase sine wave high-voltage small-current alternating current(AC)into single-phase high-frequency rectangular wave low-voltage high-current AC,and through electromagnetic and magnetoelectric conversion to produce eddy current heat and hysteresis heat in the steel plate to quickly,accurately and controllably heat specific areas of the deck.The induction heating leveling machine is composed of a fixed power regulator,a mobile frequency regulator and a trolley-type induction heater connected in series through cables,which breaks through the technical bottleneck that high-frequency,low-voltage,and high-current AC power cannot be efficiently transmitted over long distances.The frequency tracking,regulation and phase locking tech‐nology of the frequency converter was developed,which ensures the quasi-pure resistive state of the output circuit so as to efficiently utilize the grid power.A trolley type induction heater was designed,which can be moved to any area as required to carry out the leveling process and the parameters can be adjusted nearby.Laboratory tests and shipyard applications show that the electrical energy conversion and energy transformation system of ship deck induction heating leveling machine is stable and reliable,and can always ensure that the leveling machine works in a quasi-resonant state and the output power fac‐tor of the induction heater is close to one.

关 键 词：船舶甲板 感应加热 矫平 准纯电阻性态 准谐振状态 

分 类 号：TG155.2[金属学及工艺—热处理]