Abstract
Generator control system decides whether the generator can work as usual or not, as well as its stability of performance. Both types of generators control system composed of the transistor and DSP are sensitive to outward electromagnetic interference, directly related to the generator performance. In this text, we first analyze the electromagnetic interference threat generator control system of transistor type may face, then design a electromagnetic protection plan for the intake, the panel and the sense organ. This work is of great significance in improving its electromagnetic protection ability and stability of performance.
Highlights
Electromagnetic interference mainly gives an effect on the booster in control system
The drive unit composed of triangle wave producer, voltage comparer and driver amplifier circuit, output square wave ub, as drive power switch
Triangle wave producer and voltage comparer can be gained by operational amplifier circuit
Summary
Electromagnetic interference mainly gives an effect on the booster in control system. The output is low voltage when the value of trigonal wave is less than u2, while high voltage on the contrary, just as Figure 2 shows. With coupling interference signals to PID regulate circuit, the scope of trigonal wave changes or control voltage becomes uncertain which makes the value of ton/T (expressed as) out of gear, as is shown by Figure 3. If we ignore the thickness of shell, its shield efficiency under the worst far electromagnetic field is as follows: SE = 100 − 20 lg D − 20 lg D × f (1) In this formula, D expresses the bore diameter and f expresses the frequency of incident electromagnetic wave.
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