Hee-Je Kim

TL;DR: In this paper, Li-ion batteries have attracted considerable attention in the EV industry owing to their high energy density, lifespan, nominal voltage, power density, and cost, and a smart battery management system is one of the essential components; it not only measures the states of battery accurately, but also ensures safe operation and prolongs the battery life.

TL;DR: This paper proposes a novel low-pass notch filter PLL (LPN-PLL) control strategy to synchronize with the true phase angle of the grid instead of using a conventional synchronous reference frame PLL, which requires a d-q-axis transformation of three-phase voltage and a proportional-integral controller.

TL;DR: In this review, the global status of the PV market, classification of the solar PV system, configurations of the grid-connected PV inverter, classified of various inverter types, and topologies are discussed, described and presented in a schematic manner.

TL;DR: The rational design and synthesis of novel nanostructured electrode materials on various flexible-based substrates and the latest representative techniques and active materials of recently developed wearable supercapacitors with superior performance are summarized.

TL;DR: This review provides a reference point on the SCs for researchers and designers working in the field of energy storage devices and applications.