8-bit logic circuit for current coordination compensation of photovoltaic cell-super capacitor device series array and implementation method
A supercapacitor and logic circuit technology, applied in the field of photovoltaic power generation, can solve the problems such as the inability to fully compensate the missing current of the solar cell and the inability to change the mismatch state of the photovoltaic array.
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Embodiment 1
[0064] In the photovoltaic cell-supercapacitor series array under the partial shadow shielding condition given in this embodiment, the first mismatched device lacks current I d,1 is 1.5A, the maximum compensation current I′ of the supercapacitor of the mismatched device itself C,1,max It is 2A, after entering the logic compensation circuit, it is compared in the first comparator B1. Due to the maximum compensation current I′ of the supercapacitor of the first mismatch device C,1,max Greater than the first mismatch device missing current I d,1 , the supercapacitor of the mismatched device can fully compensate for the missing current, the output of the first comparator B1 is 0, the output of the first NOT gate F1 is 1, the sixth AND gate Y6 is turned on, and D1-D8 outputs the output of the first mismatched device The supercapacitor should compensate for the missing current I d,1 . The output of the output terminal S1 is 1, the output of the output terminal S2 is 0, and the D...
Embodiment 2
[0066] In the photovoltaic cell-supercapacitor series array under the partial shadow shielding condition given in this embodiment, the first mismatched device lacks current I d,1 is 2.5A, the maximum compensation current I′ of the supercapacitor of the mismatched device itself C,1,max is 2A, after writing into the first registers R1 and R2 respectively, the comparison is performed in the first comparator B1. Due to the maximum compensation current I′ of the supercapacitor of the first mismatch device C,1,max less than the first mismatched device missing current I d,1 , the mismatched device's own supercapacitor cannot fully compensate for the missing current. The output of the first comparator B1 is 1, the fourth AND gate Y4 is turned on, and the first subtractor J1 takes the missing current I of the first mismatch device d,1 The maximum compensation current I′ of the super capacitor of the mismatched device itself C,1，max The difference, that is, the missing current value...
Embodiment 3
[0069] In the photovoltaic cell-supercapacitor series array under the partial shadow shielding condition given in this embodiment, the first mismatched device lacks current I d,1 is 4.5A, the maximum compensation current I′ of the supercapacitor of the mismatched device itself C,1，max is 2A, after writing into the first registers R1 and R2 respectively, the comparison is performed in the first comparator B1. Due to the maximum compensation current I′ of the supercapacitor of the first mismatch device C,1,max less than the first mismatched device missing current I d,1 , the mismatched device's own supercapacitor cannot fully compensate for the missing current. The output of the first comparator B1 is 1, Y4 is turned on, and the first subtractor J1 takes the missing current I of the first mismatch device d，1 The maximum compensation current I′ of the super capacitor of the mismatched device itself C，1，max The difference, that is, the missing current value still required by t...
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