Feedback type alternating-current electronic load used for frequency converter aging test
An aging test, electronic load technology, applied in the direction of measuring electricity, instruments, measuring devices, etc., can solve the problems of increasing the difficulty of filter inductor design, complex current control algorithm, destroying system stability, etc., achieving good scalability and easy programming. Control, reliable performance
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[0035] In order to better illustrate the present invention, a further description will now be made in conjunction with the embodiments and the drawings.
[0036] The invention is a feedback type AC electronic load for the aging test of the frequency converter. Such as figure 1 Shown is a preferred embodiment of the present invention.
[0037] The present invention includes a device under test A, a first rectifying IPM module 1, a second rectifying IPM module 2 and a DSP processor 3.
[0038] The first rectification IPM module 1 is used to simulate load characteristics, including AC ports, DC ports and control ports.
[0039] The second rectifying IPM module 2 is used to feed back the electric energy absorbed by the device under test A pollution-free back to the grid, and includes an AC port, a DC port and a control port.
[0040] The DSP processor 3 includes an EVA output port for generating a PWM signal and an EVB output port for generating a PWM signal.
[0041] The AC port of the fir...
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