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Driven by economic and environmental concerns, countries around the world are demanding renewable energy resources (RES). Among the available renewable resource; wind and solar energy are promising resources. Recent energy regulations in Jordan have allowed the customers to install their own Photovoltaics generation (PVs) to cover their full energy consumption. This paper investigates the impact of...
This paper reviews the use of UHF double class-E (class-E2) topologies for dc/dc power conversion. After introducing this attractive resonant converter in the context of the time-reversal duality principle, two different lumped-element networks are described for appropriately terminating the drain of the switching devices. Recent implementation examples, taking advantage of GaN HEMT processes, are...
The timing accuracy of a single-photon avalanche diode (SPAD) based receiver is analyzed as a function of excess bias voltage. The width of the used optical pulse was 100 ps, which matches well with the jitter of the used SPAD receiver fabricated in a 0.35 pm HVCMOS technology. The timing error was measured to be 900 ps within the excess bias voltage range of ∼1.25 V–3.25 V. The single-shot resolution...
The isolated electrical system is the one solution for electrical distribution in the archipelago. Any disruption to this system would disserve the public and detriment the utility companies because it can't sell the energy. The problem of an isolated solar plant failure is happened in Indonesia exactly in System A. Currently, there are few references that address the investigation of real cases problem,...
Droop control is widely used in distributed generators for relating their terminal parameters to power generation. These generators are usually assumed to have enough capacities for supplying the required power. This is however not always true, especially with renewable sources with no or insufficient storage. To deal with this issue, an improved droop-based control is proposed for single-phase two-stage...
Digital-physical hybrid real-time simulation is considered to be an advanced method for future power system simulation. However, the physical interface will inevitably exist DC component, which causes negative effects on practical applications, such as degradation of simulation performance, damage to physical equipment, etc. A novel DC component elimination control strategy for the digital-physical...
Parallel inverters are commonly adopted in high power applications, for instance wind energy system, smart transformer, and power conditioners. Meanwhile, interleaved PWM is usually considered as an optimal approach to reduce the current ripple and harmonics of the parallel inverters. However, in case of a common dc-link, the problem of circulating current emerges and leads to performance degradation...
Advanced control techniques such as Volt-Watt and Volt-VAR Control have been developed for high integration of distributed renewable energy, such as Photovoltaic (PV) resources, on an electric distribution system. However, designing these control parameters which yields the best results in the system is complicated and depends on feeder conditions. This paper proposes a method to properly design the...
There has recently been a significant interest directed towards residential battery storage systems mainly motivated by high penetration of renewables, the low cost and high efficiency of power electronic devices, and the advancements in the safety and energy density of the batteries, especially Lithium-Ion (Li-Ion) batteries. Furthermore, the possibility for the end user to become a utility-independent...
This paper proposes an improvement of the finite control set model predictive control (FCS-MPC) strategy for enhancing the voltage regulation performance of a voltage source converter (VSC) used for standalone microgrid and uninterrupted power supply (UPS) applications. The modification is based on tracking the voltage reference trajectory derivative using a single step prediction horizon. The main...
To address the DC link voltage regeneration issue in parallel Uninterruptible Power Supply (UPS) system, a DC link voltage protection (DCVP) method through online virtual resistance regulation is proposed. The proposed control strategy is able to protect the DC link from overvoltage that may trigger the protection mechanism of the UPS system. Moreover, a current sharing control strategy by regulating...
In this paper, a method to diagnose and identify the open-circuit faults of IGBT for a six-level hybrid inverter (6L-HI) is proposed, which is based on the signals of the inner device voltages, the flying capacitor voltages and the phase currents of the inverter. Since the flying capacitor voltage sensors and the output current sensors are already employed for the inverter operation, only one additional...
In this paper, a wireless power transmission with foreign-object detection (FOD) consideration is proposed. In the foreign-object detecting technique, a closed-loop feedback control is proposed by tracking the voltage and current of transmitting coil in order to signal the occurrence of a significant phase difference, anticipating preventing the system from potential risks. To validate the effectiveness...
A predictive control scheme for the third-harmonic injection two-stage matrix converter (3TSMC) under unbalanced input voltages is presented. The proposed scheme is designed to predict the future behavior of the third-harmonic injection current and load currents respectively for each valid switching state. The control scheme selects the state that minimizes the error between the predicted currents...
This paper provides a novel voltage space vector modulation algorithm dedicated to the inverter fault-tolerant motor drive systems based on the four-switch inverter topology. The proposed technique ensures an accurate phase voltage modulation even under a DC-link voltage imbalance. Moreover, the capacitor voltages of the DC-link are leveled up so that the simultaneous motor drive operation is obtained...
Microgrids (MGs) represent surely the most challenging topic in electrical engineering, promising the decreasing of carbonization, the totally integration of different renewable sources and a cheap solution for those rural areas where electric distribution is economically unsustainable. The most important feature of a MG is represented by the possibility to work in islanded configuration in order...
The design of a digital state-space controller employing a deadbeat state observer is presented for uninterruptible power source (UPS) inverter applications with inductor-capacitor (L-C) filters. Conventionally, the inductor current and capacitor voltage values are utilized as the measured feedback variables for the controller, and the load current is either measured or estimated. In the proposed...
This paper presents a design approach to an embedded monitoring system found in distributed renewable energy power systems. The grid connected distributed power system, delivers energy to the consumers located on the micro-grid, operating at distribution voltage levels, and also delivering the remaining surplus energy to the main distribution grid. The aim of this paper is to present the development...
This paper proposes an energy storage unit integrated dual input PV system with distributed maximum power point tracking (MPPT). Through applying a symmetrical configuration, the proposed PV system has a single stage structure to implement voltage boosting and inversion, which contributes to the advantages such as compact size and high power conversion efficiency. The design of the control strategy...
State Grid of China has constructed multiple ultra high-voltage direct current (UHVDC) projects in recent years. UHVDC projects like Ximeng-Taizhou are hierarchically connected to different AC systems at the receiving end. The high voltage and low voltage valve groups on the hierarchical side are connected to different AC systems, and different tap changer steps of transformers, measurement error,...
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