降压型DC/DC变换实训装置的开发设计
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摘要
为了更好地进行DC/DC变换部分的培训应用、提高实践创新能力,开发设计了降压型DC/DC变换实训装置,并给出了相应的实训方法。设计的装置主电路采用Buck电路,控制驱动部分以TL494为核心,并特别巧妙地在电路中加入了开关元件。通过该装置不仅能直观掌握降压型DC/DC电路的工作原理、输入输出电压关系等基本内容,还能直观掌握电感、电容等元件在DC/DC变换电路中的作用DC/DC变换电路中的作用,掌握TL494芯片性能特点。设计的装置成本很低,可在实训中大量制作,是DC/DC变换的实训的首选装置。
In order to train and apply DC/DC converter better and to improve the ability of practice and innovation, a step-down DC/DC converter training device is developed and designed, and the corresponding training methods are given. Buck circuit is used in the main circuit of the device. TL494 is the core of the control and drive part, and switching elements are added in the circuit ingeniously. This device can not only intuitively grasp the working principle of Buck DC/DC circuit and the relationship between input and output voltage, but also intuitively grasp the role of inductance, capacitance and other components in DC/DC converting circuit, and grasp the performance characteristics of TL494 chip. The cost of the designed device is very low, and it can be manufactured in large quantities in practice. It is the preferred device for DC/DC conversion training.
In order to train and apply DC/DC converter better and to improve the ability of practice and innovation, a step-down DC/DC converter training device is developed and designed, and the corresponding training methods are given. Buck circuit is used in the main circuit of the device. TL494 is the core of the control and drive part, and switching elements are added in the circuit ingeniously. This device can not only intuitively grasp the working principle of Buck DC/DC circuit and the relationship between input and output voltage, but also intuitively grasp the role of inductance, capacitance and other components in DC/DC converting circuit, and grasp the performance characteristics of TL494 chip. The cost of the designed device is very low, and it can be manufactured in large quantities in practice. It is the preferred device for DC/DC conversion training.
引文
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[11]吴国营,张波.电流模式变换器的完整小信号模型及环路补偿[J].电工技术学报,2008,23(10):83-87.
[12]陈龙,卢旺.基于滑模变结构控制的Buck型DC/DC变换器实验研究[J].实验技术与管理,2017,34(11):66-70.
[2]王鹰,王琼,姜军,等.新工科形势下西藏高校工科人才培养--以西藏大学为例[J].高原科学研究,2018(3):104-110.
[3]陈森,张师平,吴平.基于课题型的研究型实验教学模式探索[J].实验室研究与探索,2013,32(7):171-174.
[4]杨玉岗,丁晶晶,赵若冰,等.基于耦合电感的新型Buck软开关的研究[J].电源学报,2018,16(1):23-26.
[5]贾贵玺,张春雁,肖有文,等.新型Buck软开关电路的设计与仿真[J].电工技术学报,2012,27(2):33-37.
[6]冷朝霞,刘庆丰.Buck变换器直接电流和直接电压模型预测控制[J].电力电子技术,2018,52(2):94-95+100.
[7]Jabbari M,Farzanehfard H.New resonant step-down/upconverters[J].IEEE Trans Power Electron,2010,25(1):249-256.
[8]钟山雨.仿电流斜坡峰值电流控制的Buck变换器设计[J].电力电子技术,2018,52(11):51-56.
[9]Do H L.Nonisolated bidirectional zero voltage switching DC/DC converter[J].IEEE Trans Power Electron,2011,2563-2569.
[10]张波.基于TL494的直流变换器[J].电子与封装,2010,10(12):23-26.
[11]吴国营,张波.电流模式变换器的完整小信号模型及环路补偿[J].电工技术学报,2008,23(10):83-87.
[12]陈龙,卢旺.基于滑模变结构控制的Buck型DC/DC变换器实验研究[J].实验技术与管理,2017,34(11):66-70.