In a grid infrastructure setting, a conventional inverter will invert DC power from solar panels …
To meet this need, Delta developed an optical storage and charging bi-directional inverter (BDI). This all-in-one solution integrates the conversion and control of AC and DC power for household electricity infrastructure, rooftop solar power, energy storage batteries, and EV charging.
Modular system design of bidirectional isolated dc ac converter improves the diversity of connection between the battery pack and PCS system 100kW module achieves 300-600kW PCS system, flexible configuration, easy maintainance, excellent choice for the hybrid energy storage solutions.
Figure 4-8 and Table 4-2 show the efficiency of the bidirectional DC/DC converter functioning in buck mode at 400V DC-link output. The input battery voltages considered are 80V, 160V, 240V, and 320V and the table shows that the converter achieves peak efficiencies of 97.9%, 99.0%, 99.2%, and 99.4% respectively. Figure 4-8.
The inverter stage is bidirectional, enabling power conversion from DC stage to AC stage and vice versa. The topology is constituted by an H-Bridge with each group of diagonal switches operating at high frequency during one half-wave of output voltage.
Bi-directionality is necessary since the DC/DC converter needs to act as a battery charger (buck mode) in one direction and discharge the battery (boost mode) providing a higher and stable output voltage at the DC-link. Figure 1-2. Bidirectional DC/DC Converter Block Diagram
Adopting three level control technology, Energy Storage Power Conversion System is a high efficiency and reliable performance bidirectional dc dc converter from 300kW up to 600kW for the energy storage system solution in Power Generation and Transmission application.