DC feedback type DC electronic load for locomotive power supply test
A DC electronic load and power supply testing technology, which is applied in the direction of power supply testing, electrical program control, sequence/logic controller program control, etc., can solve the problems of grid harmonic pollution, increase loss, reduce efficiency, etc., and achieve control mode Simple, avoids loss and harmonic effects
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] refer to figure 1 , the DC feedback type DC electronic load for locomotive power testing, including a main circuit and a control circuit, the main circuit is composed of a step-up chopper circuit 13 and a phase-shifting full-bridge circuit 19 cascaded.
[0021] The control circuit includes a digital signal processing unit 14 and a logic control unit 16 , and also includes a human-machine interface composed of a host computer 5 and a programmable logic c...
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