Energy Storage Systems and Power Conversion Electronics for E-Transportation and Smart Grid

Abstract

The special issue “Energy Storage Systems and Power Conversion Electronics for E-Transportation and Smart Grid” on MDPI Energies presents 20 accepted papers, with authors from North and South America, Asia, Europe and Africa, related to the emerging trends in energy storage and power conversion electronic circuits and systems, with a specific focus on transportation electrification and on the evolution of the electric grid to a smart grid. An extensive exploitation of renewable energy sources is foreseen for smart grid as well as a close integration with the energy storage and recharging systems of the electrified transportation era. Innovations at both algorithmic and hardware (i.e., power converters, electric drives, electronic control units (ECU), energy storage modules and charging stations) levels are proposed.

An Extensive Critique on Smart Grid Technologies: Recent Advancements, Key Challenges, and Future Directions

“…Smart grid infrastructure architecture is driven by smart grid system priorities and requirements. The self-healing and interoperability capabilities of the grid, the reliability, and the robustness of the system will depend on the implementation of the smart grid [23]. The National Institute of Standards and Technology (NIST) [24] and IEEE propose and implement conceptual models to support preparation, documentation, specification setting, interconnection of networks, and smart grid equipment.…”

A current control method for bidirectional multiphase DC-DC boost-buck converter

“…where 𝐼 𝐵 (𝑠) and 𝐷(𝑠) are Laplace transform of 𝑖 𝐵 ̂(𝑡) and 𝑑 ̂(𝑡). Battery-to-current transfer function, 𝐺 𝑖𝑒 (𝑠), and DC microgrid-to-current transfer function, 𝐺 𝑖𝑜 (𝑠), can also be obtained by similar fashion and is given by ( 11) and (12):…”

“…Disturbance either from 𝑉 𝑜 (𝑠), 𝐷(𝑠), or 𝐸(𝑠) will have the similar behavior because the denominator of ( 10), (11), and ( 12) is same. From ( 10), (11), and (12), relationship between 𝐼 𝐵 (𝑠), 𝑉 𝑜 (𝑠), 𝐷(𝑠), and 𝐸(𝑠) can be derived and is given by ( 13):…”

“…Fluctuation of DC microgrid voltage and ever-changing EV battery's state of charge (SoC) make it possible for the battery voltage to be higher or lower than the DC microgrid voltage. This phenomenon, which is called as 'overlapping' in some literature [11], implies that DC-DC power converter plays an important role in ensuring energy transfer between EV batteries and DC microgrid happens [12]. Various converter topology for aiding in bidirectional energy transfer between battery and DC microgrid has been reviewed in [13] but none of them concerned about overlapping phenomenon.…”