Steady state analysis of a novel single phase induction generator for renewable energy conversion

Abstract

This paper presents the equivalent circuit and steady state behaviour of a recently introduced single phase generator configuration of a three phase squirrel cage induction machine. One winding of the three phase machine is used for real and reactive power control of the machine while remaining two windings are connected in series to form the output terminals to which the variable consumer load and a fixed excitation capacitor are connected. Starting from abc reference frame model, the paper derives dynamic equations of the system in both α-β and d-q reference frames. Complete set of steady state equations are then derived in α-β reference frame model before proposing a novel steady state equivalent circuit. The steady state behaviour of the machine is analysed using Matlab Simulink under different conditions of load, rotor speed, excitation capacitance and voltage applied to the controlled winding. Comparison of the steady state values obtained from transient model and respective results obtained from the equivalent circuit shows the accuracy of the derived steady state model.

A Comparative Analysis of Prominent Virtual Synchronous Generator Strategies Under Different Network Conditions

“…A comprehensive frequency and voltage stability analysis is performed under static, dynamic and non-linear loads. The static and dynamic load modelling methods presented in [35] are used for the analysis. Similar to Section IV, the VSG-based GFMIs with a rating of 20 kW are considered for the analysis.…”

“…The schematic diagram of the non-linear load is represented in Fig. 13, and the modelling details can be found in [35].…”