An asymmetric chain hybrid energy storage system and its control method
A technology of a hybrid energy storage system and a control method, which is applied in the chain hybrid energy storage system and its control field, and can solve problems such as replenishment, weak power output capacity of batteries, and difficult energy of supercapacitors, and achieve the effect of power exchange
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[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0037] Such as figure 1 As shown, an asymmetric chain hybrid energy storage system includes a supercapacitor energy storage unit, several battery energy storage units, an output inductor 1, an AC bus 2, an LC tuned filter 3, a current detection unit 7, A voltage detection unit 8 and a controller 9 . Wherein: the supercapacitor energy storage unit is composed of a supercapacitor 5 correspondingly connected in parallel with an input terminal of a cascaded converter 4 . Each battery energy storage unit is composed of a battery 6 correspondingly connected in parallel with an input end of a cascaded converter 4 . The two terminals of the output end of each energy storage unit are respectively connected in series with the output end terminals of the adjacent energy storage unit. The positive terminal of the output end of the first energy storage unit is c...
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