Wind Mill Technology

Electrical Power Project

Michala Srnová2009/2010

Content● About project● Inverter circuit● PWM Generating● Control system● Experiences

About Project● Targets

– Generate constant output power– Realizing control system

● Main Parties– Generator– Rectifier circuit– Inverter circuit– Control System

Inverter circuit● Transform DC to AC signal using PWM● Power board: Grundfos X2100S Inverter● PWM generator

– Microcintroller ATMega328P– Source code

PWM Generating● 3 phases – 6 PWM channels● Duty cycle● Timers● Samples:

– Look-up table● Calculations

PWM Generating● Program

– Setting of registers– Infinity loop– Loop for generating half of sine period– Amplitude setting

Control System● Method of control – changing of rotor

resistance● Schema

Control System● Mathematical model of induction machine

Control System● Control system in our project

Control system● PI controller

● Implemented in microprocesor => code

Experiences● Wind mills theory● PWM theory and implementation● Various method of control induction machine● Design of control system● Management tasks

Thank you for your attention