Photovoltaic three-phase grid control method for fast and steadily implementing maximal power tracing
A control method and technology of maximum power point, applied in photovoltaic power generation, control/regulation system, single-grid parallel feeding arrangement, etc., can solve problems such as power loss
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[0038] The method is implemented in the digital signal processor DSP according to the following steps:
[0039] Step (1). Utilize the digital signal processor to collect a, b two-phase grid voltage signals, and use the formula u α = u α , u β = ( 2 u b + u a ) / 3 Carry out Clark transformation to obtain the grid voltage rotation angle θ.
[0040] Step (2). Use the digital signal processor to collect the two-phase grid-connected current signals output by the inverter, a and b, and perform Clark transformation on them, and then use the grid angle θ obtained in step (1) to use the formula i d = i α cosθ+i β sinθ,i q =-i α sinθ+i β Cosθ performs Park transformation to convert the current signals of the α and β phases to the DC...
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