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The increased power demand has led to lengthier, complex interconnections of power systems. Erection of new transmission lines is avoided due to environmental and economic reasons, hence increased power transfer in the existing system. To monitor and control of power system, continuous performance analysis is required; also FACTS devices helps in improving system performance. In this work, various...
In this paper, Design and development of control circuit algorithm of 3-Φ Voltage Source Inverter (VSI) using Unipolar Sinusoidal Pulse Width Modulation (SPWM) techniques is proposed using STM32F407VGTx discovery board interfaced with MATLAB Simulink Environment. For implementing 3-Φ VSI, this method is most useful as it will eliminate complexity of control circuit algorithm occurred due to analog...
Energy efficiency of the process equipment is achieved by the use of modern energy-saving electric drives. One of the ways of development such systems is the use of induction motor electric drive with power factor correction (PFC). The article provides analysis of PFC, built on the boost voltage converter, develop of its control system and also functional model, made in Matlab Simulink.
The most common reference current detection methods for shunt active power filters are optimized and compared in this article, theoretically and through experimental tests. One used discrete Fourier transform (DFT), d-q axes theory, p-q Instantaneous Reactive Power (IRP) theory and Sinusoidal Signal Integrators (SSI). MATLAB/Simulink software is used because it provides specialized tools in order...
Modern HVDC systems are having many advantages than HVAC systems. Two AC systems are connected using a new VSC-MMC based Hybrid HVDC system in this paper which gives many advantages than the conventional HVDC systems and LCC-VSC Hybrid systems. The proposed system gives the fast dynamic response by using different control strategies. The active and reactive power is controlled and the dc line voltage...
The most used reference current detection methods for shunt active power filter are analyzed and compared in this article, theoretically and through simulations in MATLAB/Simulink. Some practical aspects of hardware implementation are also discussed. Measured data, acquired with a dedicated data acquisition system provides the parameters required for a non-ideal real system simulation, namely a static...
On the bases of the comprehensive analysis, this paper puts forward a system design plan about the topology and control strategy of the charging system in vehicle. The system design plan has high performance and carries on the simulation of common control strategy by MATLAB, what's more, it also makes the comparative analysis of the control effect.
This paper deals with the problem of the design of an all-digital implementation of a three-phase PLL and the control logic of a shunt active filter implemented with a Multilevel Current Source Inverter (MCSI). The active filter is connected to the medium voltage level of a power distribution system where compensation of reactive power and harmonics is mandatory. The PLL is essential to obtain a reference...
The protection to the sensitive loads from voltage sags, swells and harmonics can be achieved using the dynamic voltage restorer (DVR) in a cost effective manner. In this paper, a new control algorithm based on unit templates and instantaneous symmetrical component theory along with complex Fourier series is used for the generation of reference voltages for a dynamic voltage restorer (DVR). These...
In this paper, a novel control algorithm has been proposed to regulate the DC bus voltage of a single phase shunt active power filter using a fuzzy logic controller. The DC bus voltage of a shunt active power filter should be controlled to compensate the filter losses on the grid. In many industrial applications, a PI controller is generally used to regulate the DC bus voltage of shunt active power...
High Voltage Direct Current (HVDC) transmission systems are now getting more popular due to their low power losses and fast controllability of power in DC lines as compared to AC systems currently used. The primary goal for this study is to control the voltage and power flow direction by adjusting the firing angles of rectifier (α) and extinction angle of inverter (γ). Constant Extinction Angle (CEA)...
This paper presents a comparative study through simulations of two different controllers for generation of PWM pulses for an Active Power filter namely Hysteresis Current Control and State Vector Pulse Width Modulation. A synchronous reference frame based controller for three phase three wire voltage source active power filter has been selected for the study. Constant capacitor voltage technique is...
In this paper, the development of three-phase renewable energy inverter by using the dSPACE DS1104 digital signal processing controller board is presented. The board enables the MATLAB/Simulink model linking to the hardware. The standalone voltage source inverter's control system which is implemented in the DS1104 board utilizes a digital proportional integral controller to stabilize its 50Hz sinusoidal...
This paper deals with modeling, control and co-simulation of a single-phase single-stage Grid-interactive photovoltaic (PV) system with active filter functions. Single-phase PV systems are the most prevalent in roof-top configurations. In this paper, the modeling of a PV array with maximum power point tracking is performed in MATLAB/Simulink. The developed PV array model may be directly connected...
This paper proposes a approach to filter the harmful harmonics using a five-level diode-clamped converter based shunt active power filter. A multi-level converter provides superior filtering performance however, it suffers from a voltage imbalancement in its DC-link. Therefore, a novel control method for an auxiliary balancing circuit and a pulse-width modulator are also proposed. The mathematical...
Two methods for detecting harmonics and reactive currents: p-q theory and ip-iq theory, which are based on three-phase instantaneous reactive power theory, are presented. The model of shunt active power filter(APF), based on the two methods in MATLAB, is built. In the model, the root-mean-square (RMS) part takes place of the low pass filter (LPF) part. But the two methods can't work properly when...
An active power filter (APF)based on digital signal processor (DSP) and complicated programming logic component (CPLD) is designed in this paper. Solft and hard wares are introduced and the simulation experiment to compensate the reactive power and harmonics in three-phase four-wires system is done. By using Matlab. simulation model is build for the device. The result shows that this model can restrain...
This paper deals with the control of voltage and frequency of an autonomous wind power generation based on isolated asynchronous generator (IAG) feeding three-phase four-wire loads. The proposed control scheme is using the synchronous reference frame (SRF) theory based current detection. The proposed voltage and frequency controller (VFC) consists of a three leg voltage source converter (VSC) with...
In this paper, a DSTATCOM (Distribution Static Compensator) using three single-phase VSCs (voltage source converters) integrated with three single phase transformers is employed for the power quality improvement in three-phase fourwire distribution system. Three single phase transformers are used for isolation and connection of H-bridge VSCs. This DSTATCOM provides the voltage regulation or power...
This paper presents the study of dynamic interactions between passive filters and high power cycloconverters drives. The dynamic interaction considers the impact of connection and disconnection of passive filters operating in conjunction with high power cycloconverters. The inrush currents generated by filter connection affects the cycloconverter operation. The paper presents a detailed analysis based...
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