Performance evaluation of a transformerless multiphase electric submersible pump system

Using of low-voltage variable-frequency drive followed by a step-up transformer is the most preferable way to feed an electrical submersible pump motor. The existence of long feeder between the motor and drive systems usually causes over-voltage problems because of the travelling wave phenomenon, wh...

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Bibliographic Details
Published in:Journal of engineering (Stevenage, England) England), 2014-08, Vol.2014 (8), p.407-414
Main Authors: Hakeem, Ahmed A, Elserougi, Ahmed Abbas, Abdel-Khalik, Ayman Samy, Ahmed, Shehab, Massoud, Ahmed Mohamed
Format: Article
Language:English
Subjects:
asynchronous machines
boost-inverter
filter networks
filter-less operation
five-phase modular winding induction machine
invertors
low-voltage variable-frequency drive
machine windings
overvoltage
overvoltage problems
pumps
sinusoidal output voltage
step-up transformer
transformerless multiphase electric submersible pump system
travelling wave phenomenon
variable speed drives
voltage boosting capability
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Summary:Using of low-voltage variable-frequency drive followed by a step-up transformer is the most preferable way to feed an electrical submersible pump motor. The existence of long feeder between the motor and drive systems usually causes over-voltage problems because of the travelling wave phenomenon, which makes the employment of filter networks on the motor or inverter terminals mandatory. The so-called boost-inverter inherently can solve this problem with filter-less operation as it offers a direct sinusoidal output voltage. As boost inverters have voltage boosting capability, it can provide a transformer-less operation as well. This study investigates the performance of a five-phase modular winding induction machine fed from a boost-inverter through a long feeder. A simulation study using a 1000 Hp system and experimental investigation on a 1 Hp prototype machine are used to support the presented approach.
ISSN:2051-3305
2051-3305
DOI:10.1049/joe.2014.0148