DocumentCode :
3094784
Title :
Extending the performance limits of vector controlled AC drives
Author :
Jones, R.
Author_Institution :
CEGELEC Ind. Controls Ltd., UK
fYear :
1995
fDate :
34843
Firstpage :
42461
Lastpage :
410
Abstract :
A range of industrial vector controlled inverter drives is now available for operation at power levels from 5 kW to 1 MW. The entire product range uses insulated gate bipolar transistors (IGBTs) as the power switch in a 3 phase voltage source bridge configuration. The drives provide full four quadrant operation through sinusoidal, line regenerative network bridges which are themselves identical IGBT based voltage source inverters. By adopting a fully controllable network bridge to manage the power flow to and from the DC link, the products achieve extremely low network harmonics and the feature of a fixed DC link voltage, the benefits of which are discussed further in this article. This paper considers two application examples to illustrate the performance levels that can be achieved with correctly specified vector controlled AC drives. The first example discusses the factors influencing high torque production below base speed and considers how motor and inverter characteristics can be tailored to optimise the overall system behaviour. The second example considers operation into the field weakening region. This is of particular interest for machine tool and coiler/un-coiler applications where wide constant horsepower characteristics are required
Keywords :
AC motor drives; bridge circuits; insulated gate bipolar transistors; invertors; machine control; power control; switching circuits; torque; voltage control; 3 phase voltage source bridge; DC link voltage control; IGBT based voltage source inverters; coiler/un-coiler applications; constant horsepower characteristics; field weakening region; four quadrant operation; industrial drives; insulated gate bipolar transistors; inverter characteristics; line regenerative network bridges; low network harmonics; machine tool applications; motor characteristics; performance limits extension; power flow; power switch; vector controlled AC drives;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Advances in Control Systems for Electric Drives, IEE Colloquium on
Conference_Location :
London
Type :
conf
DOI :
10.1049/ic:19950757
Filename :
405137
Link To Document :
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