Stability analysis and implementation of chopper fed DC series motor with hybrid PID-ANN controller

ABSTRACT:In normal MPPT controlling methods, all the PV panels are connected to single MPPT to produce maximum output. If any fault occurs in the PV Panel or less irradiance in some part of the panel (partially shaded PV system) also leads to reduction in power generation. In the proposed system the efficiency is increased for partially shaded PV system by using "distributed" MPPT (DMPPT) technique. In this method each panel is connected separately to separate MPPT. Each MPPT is connected to the Buck-Boost converter to compensate the voltage variation in the different PV panel. Finally all the MPPT's are connected in parallel which increases the power production and efficiency.

Section: Mppt Techniquesmentioning

confidence: 99%

“…The real challenging task of this method is tracking the maximum power point as it provides many peak powers at different times. To track the maximum power of the PV panel the maximum power point technique (MPPT) is used in the solar system [2].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Distributed Maximum Power Point Tracking for Partially Shaded PV Systems

oth¹,

Umar²,

nandam³

2015

“…The error between actual and reference voltage is checked by the proportional controller. This error is compensated by comparing the error with the repeated sequence thereby improving the efficiency of the entire converter [21][22][23][24][25].…”

Section: Conventional Systemmentioning

confidence: 99%

SEPIC Converter Based Switched Mode Power Supply Design for Battery

ra¹,

Andam²

2015

This paper proposes a plug-in electric vehicle battery charger using SEPIC converter with coupled inductor. Here, the charger operates as a switched mode power supply (SMPS). The output dc voltage is controlled by varying the duty ratio of dc/dc converter by PWM technique. In addition, a new approach is introduced to control the dc link voltage using PI and PID controllers. The proposed model provides reduced cost, lower switching losses, lower conduction losses and higher efficiency. This topology optimize the efficiency of the converter over the battery voltage range (9V -38V) and load conditions without adding any additional circuit or implementing any on/off control techniques. The configuration without full bridge LLC converter are presented and analyzed. A 3.3 KW Lithium-ion battery with an output voltage of 9V to 38V from variable dc link voltage is simulated. In comparison to conventional approaches, the efficiency of the SEPIC converter is improved by 6%.

“…The distributed generation (DG) concept emerged as a way to integrate different power plants, increasing the DG owner's reliability, reducing emissions, and providing additional power quality benefits. [1][2][3][4][5]. The energy sources used in DG systems usually have different output characteristics, and for this reason, power electronic converters are employed to connect these energy sources to the grid, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Power Quality Features Improvement In Single -Phase Grid -Connected Inverter With Non-Linear Loads

K.Prabha¹

2015

ABSTRACT:The increasing application of nonlinear loads may cause distribution system power quality issues. This work presents a control of Single-phase Grid Interactive Inverters with nonlinear loads and a technique for Harmonic compensation and power factor correction of nonlinear loads employing Current Controlled Voltage Source Inverter. This work will focus on the design methodology and the analysis of control strategy which allows the compensation of harmonics and phase displacement of the input current, for non-linear loads. The Utility-Connected Inverter should operate at both Stand-alone and Grid-Connected modes. However, the waveform qualities of the grid current in GridConnected mode and the output voltage in Stand-alone mode are poor under the nonlinear critical load with the conventional control. The impact of the nonlinear load on the grid current is analyzed. Harmonics problem in industrial power systems with non-linear loads are presented. By adding the load current into the filter inductor current loop, the influence of the nonlinear load on the grid current can be eliminated, and the waveform quality of the output voltage in stand-alone mode can be improved. The control method is simple and easy to be achieved. Simulation results from a Full-bridge Grid-Interactive Inverter with a Diode Rectifier load verify the theoretical analysis.