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A comprehensive study of orthogonal signal generation schemes for single phase systems
conference contribution
posted on 2023-05-23, 15:17 authored by Gautam, S, Waqas HassanWaqas Hassan, Bhatta, A, Lu, DD-C, Xiao, WSingle phase dq (park) transformation finds widespread application in grid interfaced converter current control, phase locked loop, reference current generation and active/reactive power calculation. The method requires additional signal to create orthogonal set and transform it to rotating frame. This is generally achieved using orthogonal signal generation(OSG) unit. As park transformation is instantaneous, associated dynamic and steady state performance depends on how fast and accurately OSG can generate orthogonal signal set while eliminating noises and disturbance signal. Moreover, power calculation in stationary frame also necessitates orthogonal sets of voltage and current signal. This paper presents a comprehensive comparative study of several OSG mechanisms reported in literature and applied to single phase systems. Various aspects of OSGs are assessed including dynamic response, accuracy, disturbance rejection feature, frequency adaptability and implementation. Moreover, issues in complex coefficient filter based OSG are identified and a generalized time delay transformation with reduced computation is also suggested. The discussions presented are substantiated via simulation results.
History
Publication title
Proceedings of the 1st International Conference on Power Electronics and Energy (ICPEE)Pagination
1-8ISBN
978-1-7281-8774-7Department/School
School of EngineeringPublisher
Institute of Electrical and Electronics EngineersPlace of publication
United StatesEvent title
1st International Conference on Power Electronics and Energy (ICPEE)Event Venue
Virtual Conference, Online (Bhubaneswar, India)Date of Event (Start Date)
2021-01-02Date of Event (End Date)
2021-01-03Rights statement
Copyright 2021 IEEERepository Status
- Restricted