Series resonant circuit and its automatic tuning method for high-power long-wave signaling system

Abstract

The invention discloses a series resonant circuit of a high-power long-wave signaling system and an automatic tuning method thereof. Control the number of capacitors connected in the parallel capacitor network for the corresponding frequency range; step 3) adjust the inductance value of the adjustable inductor, and find the inductance value and its corresponding rotor position when the current in the circuit is maximized by monitoring the current change in real time , the adjustable inductance is adjusted to the rotor position, that is, the tuning is realized. The series resonant circuit and its automatic tuning method of the present invention can quickly and accurately realize the tuning of the working frequency point of the high-power signaling system, shorten the start-up time in various situations such as normal scrambling, and have a very important role in safe transmission and signaling. Importantly, the present invention can also be used in other types of signaling systems.

Description

technical field [0001] The invention relates to the field of radio frequency control, in particular to a series resonant circuit of a high-power long-wave signaling system and an automatic tuning method thereof. Background technique [0002] At present, the domestic high-power long-wave signaling system has not yet fully realized automatic tuning. Due to its large current (hundreds of amperes), high voltage (tens to hundreds of kilovolts), harsh electromagnetic environment, and the controlled equipment is specially made For large equipment with high voltage and high current resistance, it is very difficult to realize automatic tuning. The usual method is to use the frequency preset method, that is, the commissioning personnel will debug first, and store the debugging data records of common frequency points in the control equipment. When the user uses it, the control program will call out the stored location information according to the frequency points. After comparing with...

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Problems solved by technology

[0003] In the frequency preset method, the program usually processes the storage location according to a certain frequency interval. If there are special frequency points, they are stored separately. At this stage, this method can meet the needs of use, but it is not flexible enough. Debuggers are required to conduct at least 2 times the frequency interval in the whole frequency band, and once a new frequency point needs to be used, they need to tune the frequency point by themselves according to their debugging experience, which requires high technical level of users

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