Abstract Adding photovoltaic (PV) systems in distribution networks, while desirable for reducing the carbon footprint, can lead to voltage violations under high solar‐low load conditions. The inability of traditional volt‐VAr control eliminating all is also well‐known. This article presents a novel coordinated inverter methodology that leverages system‐wide situational awareness significantly improve hosting capacity (HC). employs real‐time voltage‐reactive power (VQ) sensitivity matrix an...

An isolated active-clamped single-ended primary-inductor converter (SEPIC) power factor correction (PFC) based on SiC devices is presented. The impact of the resonant inductance switch voltage stress and range zero-voltage switching analyzed. Analytical expressions for operating points switches over line cycle are derived used to evaluate loss. Resonant snubber capacitance chosen analysis reduce loss without overstress switches. Lossless diode clamp circuits designed output so that peak...

Quadratic extended-duty-ratio (Q-EDR) boost converter is a recent topology derived from conventional quadratic and an EDR DC-DC converter. The gain of Q-EDR depends on the number phases involved in stage, which has switch each its phase. In this paper output stage interfaced with voltage multiplier cell (VMC) comprising only diode capacitor increases further without requiring any additional switch. This reduces while retaining merits as prior case. Converter operation for proposed verified...

Volt-VAr control is a popular method for mitigating overvoltage violations caused by high penetration of distributed energy resources (DERs) in distribution feeders. An inherent limitation volt-VAr that the reactive power (Q) absorbed/injected DER determined based only on terminal voltage, without considering active (P) generated DER. This leads to an inequitable burden Q support, sense those DERs generating lower P, and hence contributing less issues, may be required provide more than their...

Adding photovoltaic (PV) systems in distribution networks, while desirable for reducing the carbon footprint, can lead to voltage violations under high solar-low load conditions. The inability of traditional volt-VAr control eliminating all is also well-known. This paper presents a novel coordinated inverter methodology that leverages system-wide situational awareness significantly improve hosting capacity (HC). employs real-time voltage-reactive power (VQ) sensitivity matrix an iterative...

The conversion process of a practical large-scale feeder data from quasi-static time series (OpenDSS) model into real-time phasor (ePHASORSIM in Opal-RT) is discussed the paper. implemented using an open source Python software. Previous reported implementations for lead to several errors when applied larger-scale system such as one considered here. Hence this work, we describe common issues and propose customized solution enhance efficiency reduce complexity process. A quantitative...

As the electric power grid is brought up to date with state-of-the-art devices connected internet, pertinent information needs reliably make its way from edge cloud for system operators visualize health. Conversely, control commands also need be sent individual on in order maintain stability and safety, especially during unbalanced cases. This paper presents an affordable, brand-agnostic solution data aggregation communication using off-the-shelf products pieced together IEC 61131–3 open...

High leakage current is one of the major reliability concerns in transformerless grid-connected (TLGC) PV converters due to lack galvanic isolation. Large capacitance modules TLGC systems makes resonant frequency path very low. It forces high if switching inverter close as traditional inverters. Switching can be kept higher than achieve lower currents. A relatively new PWM method called <tex xmlns:mml="http://www.w3.org/1998/Math/MathML"...