electrical power project
DESCRIPTION
Exchange Study in Denmarkgenerating of PWM signaldesign of control systemTRANSCRIPT
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