变压器信号源内阻与传输线负载阻抗匹配研究

变压器作为电压的转换装置,在各种自动化、机械化设备中起到了关键作用。为此,为提高变压器性能,研究一种新的变压器信号源内阻与传输线负载阻抗匹配方法。该方法首先利用增大测量回路电阻法测量变压器信号源内阻值,然后利用史密斯图法计算传输线负载电阻,最后利用模拟退化智能算法实现变压器信号源内阻与传输线负载阻抗匹配。经测试,结果表明:与两种传统阻抗匹配方法相比,所提方法的变压器信号源内阻与传输线负载阻抗匹配度达到最大,说明所提方法性能更为优越,有效提高了变压器的可靠性和稳定性。

Research on matching of transformer signal source internal resistance and transmission line load impedance

Transformers as voltage replacement devices play a key role in various automation and mechanization equipment.In order to improve the performance of transformer,a new matching method between the internal resistance of transformer signal source and the load impedance of transmission line is studied.Firstly,the internal resistance of transformer signal source is measured by increasing the measuring circuit resistance,then the Smith diagram method is used to calculate the load resistance of transmission line,and finally,the simulated annealing intelligent algorithm is used to match the internal resistance of transformer signal source with the load impedance of transmission line.The test results show that,compared with the two traditional impedance matching methods,the matching degree between the internal resistance of transformer signal source and the load impedance of transmission line reaches the maximum under the application of this method,which shows that the performance of this method is better and the reliability and stability of transformer are improved effectively.