Multiport bidirectional DC-DC converter for PV powered electric vehicle equipped with battery and supercapacitor
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Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This study presents a novel quasi-Z-source converter integrated isolated multiport bidirectional DC-DC converter topology for a photovoltaic (PV) powered and battery/supercapacitor buffered electric vehicle (EV). The proposed topology can provide uninterrupted power to the electric motor of EV and regain the braking energy with the capability of bidirectional power flow. The system integrates quasi-Z-source and H-bridge converters with an existing switch. Thus, a four-port converter is achieved without any need for individual converters or additional switches. Besides, the high-gain quasi-Z-source converter allows the reduction of the rated voltages of the battery and supercapacitor packs, as well as allows using a high-frequency transformer (HFT) with a low turn ratio. The isolation between ports is provided by a secondary centre-tapped HFT. The secondary side of the HFT is equipped with a controlled full-wave rectifier to provide bidirectional power flow. In addition, a power flow management and corresponding control scheme are suggested. The performance of the proposed system has been evaluated for different operational changes. Results show that it properly performs the power flow between the ports under steady-state and transient conditions. The power flow capabilities and efficiency values validate the viability and effectiveness of the proposed system.
Açıklama
Anahtar Kelimeler
supercapacitors, photovoltaic power systems, DC-DC power convertors, high-frequency transformers, battery powered vehicles, electric motors, braking, bridge circuits, rectifiers, load flow control, PV powered electric vehicle, electric vehicle, EV, electric motor, bidirectional power flow, H-bridge converters, four-port converter, high-gain quasiZ-source converter, power flow management, multiport bidirectional DC-DC converter topology, supercapacitor, battery packs, braking energy, high-frequency transformer, HFT, controlled full-wave rectifier, steady-state conditions, transient conditions
Kaynak
Iet Power Electronics
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
13
Sayı
17
