基于推挽式供电和PID温控的半导体冰箱系统设计

Semiconductor Refrigerator System Design Based on Push-pull Power Supply and PID Temperature Control

随着科技的发展,半导体制冷技术已经广泛的应用于军事、医疗、日常生活等方面;然而现有半导体冰箱的制冷技术由于热端与冷端不能像金属那样分离,存在着恒温效果差和制冷效率低等问题;针对上述问题,根据帕尔帖效应,采用推挽式供电方式和PID温控的方法设计出了一种半导体冰箱,并且设计了3种制冷强度:高档、中档和低档;最终实验结果表明,给出设定温度和制冷强度,该冰箱可以在工作一段时间后使温度稳定在温度设定值,上下浮动不超过0.5℃,而且所用时间与预期相符合。

With the development of science and technology,the semiconductor refrigeration technology has been widely used in military,medical,daily life and so on.However,in the existing refrigeration technology of the semiconductor refrigerator,since the hot end and the cold end cannot be separated like metal,there are problems like that the constant temperature effect is poor and the cooling efficiency is low and so on.To solve the above problems,according to the Peltier effect,a semiconductor refrigerator was designed using a push-pull power supply method and PID temperature control method,and three kinds of refrigeration strengths were designed:high grade,middle grade,and low grade.The final experimental results showed that,given the set temperature and refrigeration strength,the refrigerator can stabilize the temperature at the temperature set value after working for a period of time,and the fluctuation does not exceed 0.5℃and the time used is in line with the expectation.