Abstract: BESSs connect renewable generations (RGs) to the utility grid. In this cascaded configuration of the grid-connected inverter, battery, and RG, the battery power is passively governed by the RG-grid power difference. This compromises battery…
Abstract: We propose vector current control derived from direct power control (VCC-DPC) for a three-phase voltage source inverter (VSI) in the synchronous rotating frame using instantaneous real and reactive powers. Since we obtain the VSI…
Abstract: This project analyzes and designs a three-phase-isolated Cuk-based PFC converter. To achieve PFC at ac input, the converter uses discontinuous output inductor current mode. The inner current control loop is avoided, eliminating current sensing….
Abstract: This letter describes a single-phase adaptive frequency-locked loop (FLL) with fixed-length transfer delay units. A grid voltage linear regression model is created by analyzing its transfer delay signals. Thus, TD-AFLL is suggested. Mathematically, the…
Abstract: To improve reliability, this paper examines fault diagnosis and fault-tolerant control strategies for dual three-phase permanent-magnet synchronous motor (PMSM) drives. A series of diagnostic and tolerant control methods for speed-sensor, dc-link voltage-sensor, current-sensor, open-phase,…
Abstract: Modular multilevel converter (MMC) is popular in high-power applications due to its attractive features. ACPS may use the full bridge-based MMC with three-phase to single-phase direct AC/AC conversion. This paper proposes modulated model predictive…
Abstract: Grid-connected diode rectified adjustable speed drives (ASDs) use electrolytic capacitors with dc-side inductors for dc-link filtering. Stability and power quality determine dc-link filter size. However, the dc-link filter’s reliability depends on both component capability…
Abstract: Small low-frequency data is difficult to use for permanent magnet synchronous machine drive inverter fault diagnosis without additional hardware and affecting accuracy. This problem often wastes system memory, computes unnecessary data, increases hardware requirements…
Abstract: A photovoltaic and energy storage system (ESS) needs a bidirectional buck-boost converter, which this paper proposes. For zero-voltage switch turn-ON, conventional bidirectional buck-boost converters for ESSs use discontinuous conduction mode (DCM). DCM operation causes…
Abstract: Under non-unity voltage gain conditions, modulating phase-shift ratios in a dual active bridge (DAB) dc-dc converter reduces reactive power and increases efficiency. Because a DAB can operate in four scenarios (forward/backward, buck/boost) with five…
Abstract: This paper proposes a new class of single-stage high-frequency ac-link power converters that can step up/down voltage across a wide frequency and voltage range. The bidirectional power flow family can interface various single/multi-port dc…
Abstract: This paper proposes multiport switched-capacitor multilevel inverter (SCMLI) topologies for high-frequency AC power distribution. Its asymmetric dc voltage sources and common ground make it ideal for renewable energy farms and electric vehicles. The proposed…
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