文档介绍：SENSORLESS SPEED CONTROL OF INDUCTION
MOTOR USING VHDL/FPGA
Abstract
This project presents the mathematical principles and algorithm
underlying a new sensorless control strategy for a three phase squirrel cage
induction motor. The control prises of two elements: the stator
current control strategy and sensorless speed control strategy both of them
based on equivalent 3-φR-L-e circuit where parameter are designed from
space vector model of the induction motor. The work algorithm is
used to generate 3-bit code associated with the output voltage generated by a
PWM inverter. The work size and architecture is determined based
on the necessary calculations precision and available hardware resemblance..
The motor controller structure developed in this project uses FPGA (field
programmable gate array) implemented work alongside pipelined
digital structure to carryout putationally intensive task of controlling
the stator current. The use of specialized digital structure ensures fast
operation and allows speed control and current control algorithm to be
performed in parallel. The VHDL design for the three phase induction motor
and FPGA implementation are presented including simulation result.
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Chapter 1
Introduction
Historical Review
The history of electrical motors goes back as far as 1820, when
Hans Christian Oersted discovered the ic effect of an electric
current. One year later, Michael Faraday discovered the ic
rotation and built the first primitive . motor. Faraday went on to discover
ic induction in 1831, but it was not until 1883 that Tesla
invented the asynchronous motor. In 1882, Nikola Tesla identified the
rotating ic field principle, and pioneered the use of a rotary field of
force to operate machines. He exploited the principle to design a unique two-
phase induction motor in 1883. In 1885, Galileo Ferraris independently
researched the concept. In 1888, Ferraris published his research in a paper to
the Royal Acad