Proceedings Article10.1109/EPE.2016.7695510
A generalised harmonic linearisation method for power converters input/output impedance calculation
Valerio Salis,Alessandro Costabeber,Pericle Zanchetta,Stephen M. Cox +3 more
- 01 Sep 2016
pp 1-7
9
TL;DR: A general method for the evaluation of small-signal input impedances of power converters is presented, based on harmonic linearisation and Fourier analysis techniques and a single-phase boost PFC is considered as case study.
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Abstract: A general method for the evaluation of small-signal input impedances of power converters is presented in this paper The method is based on harmonic linearisation and Fourier analysis techniques and a single-phase boost PFC is considered as case study The analysis is based on the average model of the converter but no further approximations have been made and both voltage and current loops are included A comparison between time domain and numerical simulation is presented to validate the proposed model
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Citations
Stability Assessment of Power-Converter-Based AC systems by LTP Theory: Eigenvalue Analysis and Harmonic Impedance Estimation
TL;DR: In this article, two general methods to assess the stability of power-converter-based ac systems are presented based on the linear time periodic (LTP) systems theory.
Stability Boundary Analysis in Single-Phase Grid-Connected Inverters With PLL by LTP Theory
TL;DR: In this article, a single-phase grid-connected inverter with phase-locked loop (PLL) is considered as case study, and the stability boundaries can be precisely evaluated by the proposed method, despite the nonlinearity introduced by the PLL.
Dual-loop Control for Three-phase Vienna Rectifier with Duty-ratio Feedforward
Chuanhao Ji,Li Zhang,Rui Zhao,Baolin Chen,Yan Ming,Yan Xing,Xudong Ma +6 more
- 01 Oct 2019
TL;DR: The simulation and experimental results are given, which are compared with the commonly used grid-voltage feedforward in the dq-domain, to verify that the proposed feedforward strategy can not only operate stably at partial load, but also optimize THD to a certain extent.
4
Input Impedance Modeling of Three-Level Multi-Stage NPC Topology
M. Makoschitz,J. Stoeckl,W. Hribernik +2 more
- 01 Jun 2018
TL;DR: This paper presents a simple and vivid method to model the small signal input impedance of a single-phase three-level multi-stage neutral point clamped (NPC) converter system based on an electric locomotive as used for e.g. passenger trains.
3
A Small Signal Rotating Frame Model of a Self-synchronizing Single-phase Grid-tied Inverter
R. Agrawal,Brendan McGrath,Carlos Teixeira,Richardt H. Wilkinson +3 more
- 22 May 2023
TL;DR: This paper introduces a small-signal rotating frame model for a self-synchronizing single-phase grid-tied inverter, enabling stability analysis using Floquet theory and validating the model with detailed switched simulations and experimental results.
2
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Analysis of D-Q Small-Signal Impedance of Grid-Tied Inverters
TL;DR: In this article, the small-signal impedance of three-phase grid-tied inverters with feedback control and phase-locked loop (PLL) in the synchronous reference ( d-q ) frame is analyzed.
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