DSP based Voltage Source Inverter for an application of Induction Motor control

The paper presents a Single-phase inverter configuration dependent on IGBTs utilizing a Digital Signal Processor by the SPWM method. The equipment configuration is actualized utilizing IGBT Inverter Module. The equipment results are examined in the paper. The IGBT, which requires 15v of activating pulse to their individual gates, is taken care of through the isolation circuit. The circuit is intended to enhance the pulse from the DSP controller, up to the necessary abundancy, and goes about as an isolation circuit. The inverter input is given through the DC rectifier circuit with consistent voltage, and the output is Controllable AC with variable voltage and frequency.

MPPT Controller Based on Fuzzy Logic for Photovoltaic Systems using Line-Commutated Inverter and Sepic Converter

A controller for maximum power point tracking (MPPT) based on fuzzy logic was developed to connect the solar panels and three phase grid through an inverter. MPPT controller traces the maximum power and then feeds this power to the three phase grid irrespective of the changes in solar irradiations. The input and output variables for the fuzzy logic controller were selected in order to vary the inverter firing angle to track the maximum power from the solar panels. The proposed system using fuzzy logic controller was built using MATLAB Simulink /Power System Block (PSB) set. A DSP controller has been embedded with program for firing of the thyristors used in the inverter with appropriate pulses. Hardware of the entire system was fabricated in the laboratory and the outputs from the PV array of 90 volts, 11 amperes are exhibited. Both the hardware and simulation outputs have been compared which are in close agreement to validate the suggested system.

Implementation of Coupled Inductor Based 7-level Inverter with Reduced Switches

<p>This paper proposes implementation of coupled inductor based 7 level inverter with reduced number switches. The inverter which generates the sinusoidal output voltage by the use of coupled inductor with reduced total harmonic distortion. The voltage stress on each switching devices, capacitor balancing and common mode voltage can be minimized. The proposed system which gives better controlled output current and improved output voltage with diminished THD value. The switching devices of the system are controlled by using hysteresis current control algorithm by comparing the carrier signals with constant pulses with enclosed hysteresis band value. The simulation and experimental results of the proposed system outputs are verified using matlab/Simulink and TMS320F3825 dsp controller respectively.</p>

Wind-PV Hybrid Energy Source Fed Three Level NPC with Quasi Z Source Network

Multilevel inverters find use in industrial drive applications and grid based power generation. Owing to the increasing power demand and rising conventional generation costs a new alternative in renewable energy source is gaining popularity and acceptance. A Wind-PV hybrid renewable energy source is proposed which increases power reliability and improves standalone generation efficiency. A Quasi Z source network allows inverter shoot through possibility while boosting the dc voltage fed to the Neutral Point Clamped MLI. Simulation results were obtained for two levels VSI and further simulations for 3 level quasi NPC-TLI verified using Matlab Simulink and hardware implementation results verified by using DSP controller