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The three-phase current source inverter has the characteristics of accurate current control, high dynamic response speed and strong current limiting ability, and the DC side voltage can be adjusted from zero. In this paper, the three-phase current source inverter topology is studied, the mathematical model of the converter is established in the three-phase static coordinate system and two-phase rotating...
This paper presents a voltage control strategy for a DC load powered by a three phase inverter connected to a Permanent Magnet Synchronous Generator (PMSG). The DC load consists of a DC capacitor in parallel with the inverter and the unknown current load. The control strategy is designed based on Simple Adaptive Control (SAC) technique. The structure is a cascade controller designed in rotor reference...
Input current of a Current Fed Switched Inverter (CFSI) contains the switching frequency component (75 kHz) and a second harmonic component of line frequency (100 Hz) apart from the DC part. In prior designs, the second harmonic component was suppressed by increasing the size of passive components (inductor or capacitor), which makes the inverter implementation bulky. This paper presents a control...
CCAMY systems in partnership with Lille University currently develops Emulatio: a simulation and diagnosis platform for multi-physic systems, using Hybrid Bond Graph. This platform is devoted to automatically build model of industrial Computer-Aided Design schematics, then generate Block-Diagrams for simulation and export Global Analytical Redundancy Relations for model-diagnosis. For this task, a...
This work provides the guidelines to calculate the size of the DC-link capacitor to contribute with additional energy - for a short period of time - than the photovoltaic panel can supply under normal operating conditions. First, a model of a three-phase electric generation system is used that combines photovoltaic panels and an inverter with an LCL filter at network side. In addition, a control algorithm...
With the development of electrical control technology and the need of environmental protection, the marine shaft generating system based on PWM technology is developed and used. In shaft generator system, inverters parallel and parallel of inverter and diesel generator are key problems. Therefore, the paper proposes a control strategy based on virtual synchronous generator theory that simulates the...
Based on the fact that both the phase and amplitude characteristics of fractional capacitor are related to its order, the introduction of fractional capacitor will make power factor correction (PFC) more flexible compared with the one using conventional capacitor. In order to verify the PFC function with fractional capacitor, an equivalent fractional capacitor model composed of an inverter and a resistor...
Electrical power demand have grown rapidly over the years which results in power system congestion, depletion of fossil fuels and increased environmental hazards. Further existing power system generations are inadequate for the exponential demand growth. Environmental risks and depleting fossil fuels created a pocket for renewable energy based distributed generations that are cleaner, and renewable...
To achieve longer life for ac machine drives it is desirable to supply them with pure sinusoidal voltages. This reduces the stress on the windings mechanical structure. This can be accomplished by connecting an additional L-C filter at the terminals of the machine. However such filter will induce resonance effect at the motor terminals due to sidebands of switching frequency in the voltage spectrum...
A solar converter with integrated battery back-up is presented in this paper for medium power application. The proposed system uses a single stage power conversion topology to extract power from solar panels. The integrated battery energy storage system ensures continuity of power flow during partial shading and night times. Proposed solution reduces the cost and complexity of solar power converters...
This paper proposes a cascade voltage/current control method (vector control) for a three-phase inverter for grid connected applications. The study mainly focuses on the innovative control law based on the flatness properties for a three-phase inverter with output LC filter. Utilizing the flatness principle, we propose simple solutions to the control and stabilization problems. The effectiveness of...
In this paper the design of control law to calculate width of PWM pulse to generate the desire output voltage is described. Design of hardware and control law is carried out by considering 100 Watt application(load). This design is carried out with state space variable using digital control technique. Digital controlier is design using pole placement technique to achive desire transient response....
This paper is aimed at modeling, control and analysis of Solar PV-Grid integration system using Anti-Hebbian control algorithm. The inverter performs multiple functions such as transferring real power produced by PV into the grid, fundamental and harmonic reactive power compensation, real power compensation, power factor correction and voltage regulation. The under mentioned simulation results and...
If microgrid is connected with main grid, there will be no problem of stability. But after islanding, stability issues occurs. For stability analysis of microgrid the effect of control strategy used in inverters is necessary to study. Load and network parameters also affects on stability of system. The controller of inverter, load and network should sense the signals accurately and quickly because...
This paper addresses the modeling and control of the grid connected photovoltaic system. The system contains a PV panel that converts irradiation to electrical power, a boost converter which increases the voltage of the PV, and a grid connected inverter to convert the DC power to three Phases AC power. MPPT control is developed in order to track the maximum power provided by the photovoltaic generator...
This paper presents for the first time, the modeling and simulation of a bidirectional DC/DC Buck-Boost converter-DC motor system. This configuration allows the motor shaft to rotate in both directions. The mathematical model is obtained by applying the Kirchhoff's laws in each of the operating modes of the system, whereas the simulation results are obtained using Matlab-Simulink. The results show...
This paper deals with measurement and evaluation of electromagnetic noise generated by induction electric motor fed by inverter controlled by PWM. It suggests and describes possible method of evaluation the electromagnetic noise which can be used in real-time applications.
The paper presents topics about the connection of two single-phase inverters with different power capabilities connected in parallel to supply linear loads. The equations of difference related to control and modelling are programed in an embedded DSP 320TMS28F335 system. The model of synchronization of Phase Locked Loop (PLL), the measurement of active and reactive power and the selected control strategy...
An algorithm of electrical machine phase current curve approximation was designed for motors powered by autonomous voltage inverter. The algorithm realization results in virtual model are presented. The algorithm is destined for mechatronic systems using informative properties of autonomous inverter.
Electric vehicle appears to be one of the valuable solutions for environmental protection and the fast rate of depletion of world fuel oil supply. In particular, due to an increase in the elderly population and aging of a megacity, the need for electric micro mobility is even more apparent. Electric vehicles have serious disadvantages because of the limitation on cruising range imposed by weight,...
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