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A micro processor based A.C. drive with a Mosfet inverter
Author(s)
Baird, John Malcolm Edward
Date Issued
1991
Type
Thesis
Publisher
Cape Technikon
Abstract
A detailed study into the development of a three phase motor
drive, inverter and microprocessor controller using a scalar
control method. No mathematical modelling of the system was
done as the drive was built around available technology.
The inverter circuit is of a Vo~tage source inverter
configuration whicp uses MOSFETs switching at a base frequency
of between 1.2 KHz and 2 KHz.
Provision has been made for speed control and dynamic braking
for special applications, since the drive is not going to be
put into a specific application as yet, it was felt that only
a basic control should be implemented and space should be left
for special requests from prospective customers.
The pulses for the inverter are generated from the HEF 4752
I.e. under the control of the micro processor thus giving the
processor full control over the inverter and allowing it to
change almost any parameter at any time.
Although the report might seem to cover a lot of unimportant
ground it is imperative that the reader is supplied with the
back-ground information in order to understand where A.e.
drives failed in the past and where A.e. drives are heading in
the future. As well as where this drive seeks to use available
technology to the best advantage.
drive, inverter and microprocessor controller using a scalar
control method. No mathematical modelling of the system was
done as the drive was built around available technology.
The inverter circuit is of a Vo~tage source inverter
configuration whicp uses MOSFETs switching at a base frequency
of between 1.2 KHz and 2 KHz.
Provision has been made for speed control and dynamic braking
for special applications, since the drive is not going to be
put into a specific application as yet, it was felt that only
a basic control should be implemented and space should be left
for special requests from prospective customers.
The pulses for the inverter are generated from the HEF 4752
I.e. under the control of the micro processor thus giving the
processor full control over the inverter and allowing it to
change almost any parameter at any time.
Although the report might seem to cover a lot of unimportant
ground it is imperative that the reader is supplied with the
back-ground information in order to understand where A.e.
drives failed in the past and where A.e. drives are heading in
the future. As well as where this drive seeks to use available
technology to the best advantage.
Additional information
Thesis (Masters Diploma (Electrical
Engineering)--Cape Technikon, Cape Town,1991
Engineering)--Cape Technikon, Cape Town,1991
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Micro processor based A.C. drive with a mosfet inverter.pdf
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