The Research On Rectifier DC Electrical Source For Electrolyzing Cuprum And Monitor Technique

To aim at the ubiquity disadvantages of bad reliability, no monitor and not to know the real-time operation status and data of rectifier DC electrical source of electrolysis profession in nowadays, this paper introduces a kind of digital triggering thyristor and digital curve show rectifier system that directly use computer. By running in electrolysis profession, it can raise the production efficiency of enterprise, and promote automatic producing and supervisory level of enterprise. In this system, we combine the control and the monitor with computer technique, we adopt NN PID regulator to control the electrolysis current in real time closed loop, Additional, design a equipment to keep watch on the working condition of total rectifier DC electrical source.Main circuit is a controlled rectification circuit with reciprocal pair star that bring a balanced reactor, the rectification transformer is a advanced five-limb transformer, incorporate the balanced reactor within the rectification transformer, of simple structure, small value, low noise, such advantages as the material energy-saving, etc., reduced the installing and safeguarded cost at the same time.It adopt the single-phase voltage as the synchronous signal voltage, pass phase locking loop 3 times to synchronous voltage frequently, as the initial base of the trigger pulse. The software timer delay time to finish the moving-phase of the trigger pulse, there are advantages that synchronous method is simple, and that trigger is the punctual.We adopt the three dots law to sample the AC signal, to calculate virtual value fast, as so as to reduce the speed demand to sample signal, and the calculation quantity demand.In software, we use Visual C++ and assembler language mix programming technology to solve the contradiction of good user interface and operating hardware that system requires. Through multi-thread procedure designing technique of Visual C ++, we solve the contradiction between the three of that human-computer interaction needs responding at any time, data calculating is chronic, interrupt must respond in real time.The main techniques are: multithread technique to parallel handle three task of user interface, thyristor digital trigger and adjust PID parameter automatically; five-limb transformer technique; fast sampling technique of AC signal; PLL (phase locked loop) synchronization technique; high accuracy timer technique; multiplex digital filter technique.It is proved by practice that this system's control precision and reliability is all right, and that it can meet the production need and raise the production efficiency.