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The work done in this paper attempts to exploit a Stackelberg game theoretic approach for resilient control of a networked system. A switching control design has been incorporated to modify the system dynamics on occurrence of an attack to enable online recovery. A case of grid forming Voltage Source Inverters (VSI's) is considered and systematic analysis concerning effectiveness of the proposed control...
In this paper, we propose a generation control strategy for islanded lossless microgrids with inverter-interfaced generators. In particular, we address the problem of obtaining a desired active power load sharing while regulating the frequency to some nominal value. The proposed control strategy is based on the slow readjustment of the active power reference of each inverter, i.e., each inverter aims...
In this paper we propose the structure and the functioning of a photovoltaic (PV) connected to the electric distribution and transmission network, equipped with the malfunction detection blocks. The studies that were carried focused on the injection of a power of 16 KW, produced by a PV panel field, on the electrical network of medium voltage (25 KV). In order to the reliability of the injection system...
The synchronous inverter is an electrical inverter device which is synchronizing inverter phase into the micro-grid phase at the same amplitude and frequency. A three phase phase synchronous inverter (PSI) is basically used in the high efficiency power supply systems. The inverter phase is depend on the controllers which are two level pulse width modulation (PWM) generator, phase lock loop (PLL) regulator,...
Many of advanced countries shift to renewable age, to reduce fossil fuel consumptions, to moderate climate change, and most importantly to maintain energy security in future. Many of developing countries accelerate grid extensions. However, most of the lower population zone are not cost effective to apply the conventional grid architecture. They realize that the shift to renewable energy will be promising...
This paper presents synchrophasor deployment for microgrid automation applications. A microgrid, which is the main component of future smart grids, requires sophisticated measurement and control capabilities. Conventional RTU based automation approaches suffer from slow measurement update and lack of time-stamp values. In this study, a time-synchronized control approach is proposed for a deployable...
This paper presents low computation algorithms for single phase integration of permanent magnet generators associated with a wind turbine emulator test-rig. The grid synchronisation and grid side control are performed by Second Order Generalised Integrators (SOGI). A SOGI-FLL (frequency locked loop) was used for robust, accurate and low computation single phase grid synchronisation. Proportional-Resonant...
This paper focuses on the performance evaluation of grid-connected photovoltaic (PV) inverters in terms of static maximum power point tracking (MPPT) efficiency. A simple test-bench set-up is proposed to accurately analyze the behavior of commercial inverters applied to PV plants under partial shading conditions. The system performs a real-time monitoring of the operating point of the PV plant during...
Smart Grid is being considered in power systems industry for its vast potentials in providing numerous benefits that include efficient management, self-healing of the network and dynamic pricing. Such a concept can also be applied in managing grid networks that contain renewable energy sources such solar panel, wind and biogas based plants. Renewable energy (RE) sources and the related technology...
This paper presents the architecture of a hybrid phase lock loop circuit topology for synchronizing a single-phase inverter fed from a renewable energy source such as a photovoltaic (PV) generator to the low voltage utility grid. The system uses a digital phase lock loop (DPLL) architecture, which is based on the arctan phase detector, driving a phase lock loop (PLL) to synchronize a PV generator...
This paper presents the emulation of grid-connected wind energy conversion system based on the 30 MIPS Digital Signal controller (DSC) dsPIC30f3011. This system is composed by a three-phase permanent magnet generator, an AC to DC converter and a single phase Voltage Source Inverter (VSI). The inverter was driven using Space Vector Pulse Width Modulation (SVPWM) at a switching frequency of 18 kHz and...
This paper presents principles and results of dynamic testing of an SRAM-based FPGA using time- resolved fault injection with a pulsed laser. The synchronization setup and experimental procedure are detailed. Fault injection results obtained with a DES crypto-core application implemented on a Xilinx Virtex II are discussed.
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
A high bandwidth critical path monitor (1 sample/ cycle at 4-5 GHz) capable of providing real-time timing margin information to a variable voltage/frequency scaling control loop is described. The critical path monitor tracks the critical path delay to within 1 FO2 inverter delay with a standard deviation less than 3 FO2 delays over process, voltage, temperature, and workload. The CPM is sensitive...
A circuit for on-chip measurement of long-term jitter, period jitter, and clock skew, is demonstrated. The circuit uses a single latch and a voltage-controlled delay element, and is evaluated in a stand-alone pad frame. Excellent reproduction of jitter measured by oscilloscope is shown. Measured jitter resolution is 1 ps or better. The circuit is also incorporated into a 2 GHz clock distribution network...
This paper proposes an improved synchronization control scheme of a low cost 400 Hz power supply for no-break power transfer. In the case of aircraft application, the 400 Hz power supply called as ground power units (GPU) has been accepted as external electrical power system during stopovers in ground. When transferring from one power source to the other, there is a momentary break in supply. To transfer...
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