Design and field programmable gate array implementation of cascade neural network based flux estimator for speed estimation in induction motor drives

This study presents design and hardware implementation of cascade neural network (NN) based flux estimator using field programmable gate array (FPGA) for speed estimation in induction motor drives. The main focus of this study is the FPGA implementation of cascade NN based flux estimator. The major...

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Bibliographic Details
Published in:IET electric power applications Vol. 11; no. 1; pp. 121 - 131
Main Authors: Venkadesan, Arunachalam, Himavathi, Srinivasan, Sedhuraman, Karthikeyan, Muthuramalingam, A
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 01.01.2017
Subjects:
cascade neural network based flux estimator design
cascade NN based flux estimator
Cascades
cost optimisation
cost reduction
Elliott function
Estimators
excitation function
execution time reduction
field programmable gate array implementation
Field programmable gate arrays
Flux
FPGA implementation
Hardware
induction motor drives
Induction motors
layer multiplexing concept
minimum bit precision
Multiplexing
neural nets
Neural networks
nonlinear activation function
power engineering computing
resource allocation
resource utilization
Spartan FPGA kit
speed estimation
cost reduction
field programmable gate array implementation
cost optimisation
field programmable gate arrays
layer multiplexing concept
minimum bit precision
induction motor drives
speed estimation
execution time reduction
cascade NN based flux estimator
power engineering computing
Elliott function
resource allocation
cascade neural network based flux estimator design
FPGA implementation
excitation function
Spartan FPGA kit
nonlinear activation function
resource utilization
neural nets
ISSN:1751-8660, 1751-8679, 1751-8679
Online Access:Get full text
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Description
Summary:This study presents design and hardware implementation of cascade neural network (NN) based flux estimator using field programmable gate array (FPGA) for speed estimation in induction motor drives. The main focus of this study is the FPGA implementation of cascade NN based flux estimator. The major issues in FPGA implementation are optimisation of cost (resource) and execution time. A simple non-linear activation function called as Elliott function is used to reduce the execution time. To reduce the cost, and effectively utilise resource, the concept of layer multiplexing is adopted. The lowest bit precision needed for good performance of the estimator is identified and implemented. The proposed NN based flux estimator using simple excitation function and minimum bit precision is implemented using layer multiplexing technique. The designed estimator is tested on Spartan FPGA kit (3sd1800afg676-4) and the results obtained are presented.
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ISSN:1751-8660
1751-8679
1751-8679
DOI:10.1049/iet-epa.2016.0550