Inverse direct power control method of grid connection converter
A power control and converter technology, which is applied in the field of reverse direct power control of grid-connected converters, can solve problems such as large amount of computation, high dependence on mathematical model parameters, and weak robustness
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[0035] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0036]The grid-connected converter back-stepping direct power control system in this embodiment includes a voltage source type grid-connected converter 1, a voltage sensor 2 for detecting the voltage of the three-phase grid, and a current Hall sensor 3 for detecting the three-phase current. The voltage sensor 4 for detecting the DC bus voltage, the current Hall sensor 5 for detecting the load current on the DC side, and the control loop for adjusting the output active and reactive power of the grid-connected converter. The control loop is composed of a feedback signal processing channel and a forward control channel, wherein the feedback signal processing channel includes a digital phase-locked loop module 6, which is used to obtain the stator voltage in t...
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