A modular multilayer voltage equalizer with a distributed controller is proposed to equalize the voltage of series-connected energy storage cells. In the cell-level equalizer, every two cells are connected in series through a module, and in the module-level equalizer, all modules are connected through the ac bus established with the transformer’s secondary side windings. As the module-level equalizer topology is an ac fully coupled structure, based on the proposed controller method, all cells can transfer or receive energy in a switching cycle simultaneously. The implemented distributed controller requires only one voltage sensor per two cells, and each module benefits from using only one switch without the need for current feedback. Therefore, this method has fewer components than the existing methods with similar features and prevents increasing component rates, as the number of battery cells increases. The proposed circuit is comprehensively analyzed, and its feasibility is verified by experimental results.
Modular Voltage Equalizer Circuit With AC-Bus Inter-Modules Connection
IEEE Transactions on Transportation Electrification ; 10 , 1 ; 682-698
2024-03-01
4174506 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Planar Lightwave Circuit Dispersion Equalizer
British Library Online Contents | 1996
|Full-electronic inter-station connection execution module circuit
Europäisches Patentamt | 2021
|Double-capacitor voltage-multiplying equalizer and control method thereof
Europäisches Patentamt | 2021
|Storage module voltage equalizer, storage device, and operating machine
Europäisches Patentamt | 2016
|