A Problem with IFOC and a New PWM Based 180 Degree Conduction Mode for Three Phase Inverter (original) (raw)

Free PDF

FPGA Based Three-Phase Sinusoidal PWM Control for Voltage Source Inverter Fed IM

This thesis presents a design and practical implementation of a Field Programmable Gate Array (FPGA) based Sinusoidal Pulse Width Modulation (SPWM) for a three-phase inverter to control the speed of a three-phase Induction Motor (IM). The control is achieved via varying the stator voltage, and varying the stator voltage and frequency with V/F control method. The inverter is employed as a Voltage Source Inverter (VSI). The FPGA is used to generate the appropriate PWM signals for the inverter switches. The proposed control schemes have been realized and implemented on the Spartan-3E Starter kit. The FPGA programme was carried out using hardware description language VHDL and Xilinx-ISE 9.2i design software. As compared with conventional digital PWM techniques, the proposed methods offer several advantages: easy digital design, minimal scaling of digital circuits, reconfigurability, flexibility in adaptation, and direct hardware implementation. In addition to FPGA, MATLAB/SIMULINK software was used for simulation and verification of the proposed circuit performance. The simulation results have been compared with the experimental results obtained from hardware circuit. Simulation and experimental results show that both are in a close agreement.

Free PDF

SVPWM & SPWM CONTROLLER BASED PERFORMANCE EVALUATION OF THREE PHASE INDUCTION MOTOR

This paper presents the performance analysis of three phase induction motor using sinusoidal pulse width modulation(SPWM) and space-vector modulation(SVPWM). The main objective of this paper is to evaluate the power factor, efficiency and THD of three phase induction motor and compare the results using SPWM and SVPWM method. Space vector pulse width modulation (SVPWM) technique has emerged as a most used modulation strategy for the voltage source inverter (VSI) fed AC motor drives. This paper describes comparison of SVPWM and SPWM modulating techniques with induction motor as load. Switching strategies for the inverter based on space vector PWM (SPWM) and sinusoidal PWM (SPWM) is used in this paper.

Free PDF

A Problem with IFOC and a New PWM Based 180 Degree Conduction Mode for Three Phase Inverter (original) (raw)

Free related PDFsRelated papers