Adaptive noise suppression filter based integrated voltage and frequency controller for two-winding single-phase self-excited induction generator

• Published in: IET renewable power generation Vol. 8; no. 8; pp. 827 - 837
• Main Authors: Kalla, Ujjwal Kumar, Singh, Bhim, Murthy, S.S
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.11.2014
• Subjects: adaptive control; adaptive noise suppression filter based control algorithm; Adjustable; adjustable reactive power; asynchronous generators; chopper; Controllers; dc‐bus; digital signal processor; dynamic conditions; Electric potential; Filters (fluid); frequency control; frequency estimation; Hydraulic turbines; Induction generators; integrated voltage and frequency controller; IVFC; machine control; Noise; nonlinear loads; phase shifting technique; point of common coupling voltage; power 5 kW; quadrature signal; reactive power; resistive dump load; seasonal changes; speed governor‐free hydro turbine driven SEIG; steady state conditions; terminal voltage control; two‐winding single‐phase self‐excited induction generator; unregulated micro hydro turbine; Voltage; voltage control; voltage source converter; VSC; machine control; integrated voltage and frequency controller; chopper; IVFC; resistive dump load; point of common coupling voltage; quadrature signal; phase shifting technique; digital signal processor; two-winding single-phase self-excited induction generator; speed governor-free hydro turbine driven SEIG; seasonal changes; dc-bus; steady state conditions; power 5 kW; adaptive noise suppression filter based control algorithm; voltage source converter; VSC; asynchronous generators; adaptive control; dynamic conditions; frequency control; terminal voltage control; frequency estimation; reactive power; unregulated micro hydro turbine; adjustable reactive power; nonlinear loads; voltage control
• ISSN: 1752-1416; 1752-1424; 1752-1424
• DOI: 10.1049/iet-rpg.2013.0271

In this study, an adaptive noise suppression filter based control algorithm is proposed for integrated voltage and frequency controller (IVFC) of a speed governor-free hydro turbine driven single-phase self-excited induction generator (SEIG). A voltage source converter (VSC) is employed to control the terminal voltage of SEIG with adjustable reactive power. It also mitigates the harmonics injected by non-linear loads in the SEIG system. A resistive dump load with a chopper is connected at dc-bus of VSC. The dump load is controlled to regulate the system frequency at varying loads and mechanical power input to the unregulated micro hydro turbine during seasonal changes. The frequency estimation and phase shifting technique is used for frequency estimation and for generation of quadrature signal of point of common coupling voltage. The proposed IVFC is designed, developed and implemented using a digital signal processor for a two-winding single-phase SEIG of 5 kW rating and test results are presented to demonstrate its performance under steady state and dynamic conditions.