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Stability assessment of high-bandwidth DC voltage controllers in single-phase active-front-ends: LTI vs LTP models (2018)
Journal Article
Salis, V., Costabeber, A., Cox, S. M., Formentini, A., & Zanchetta, P. (2018). Stability assessment of high-bandwidth DC voltage controllers in single-phase active-front-ends: LTI vs LTP models. IEEE Journal of Emerging and Selected Topics in Power Electronics, 6(4), 2147-2158. https://doi.org/10.1109/JESTPE.2018.2810282

In recent years, a considerable effort has been made to minimise the size of DC-link capacitors in single-phase activefront-ends (SP-AFE), to reduce cost and to increase power density. As a result of the lower energy storage, a high-bandwidth outer D... Read More about Stability assessment of high-bandwidth DC voltage controllers in single-phase active-front-ends: LTI vs LTP models.

Stability boundary analysis in single-phase grid-connected inverters with PLL by LTP theory (2017)
Journal Article
Salis, V., Costabeber, A., Cox, S. M., Zanchetta, P., & Formentini, A. (2018). Stability boundary analysis in single-phase grid-connected inverters with PLL by LTP theory. IEEE Transactions on Power Electronics, 33(5), 4023-4036. https://doi.org/10.1109/TPEL.2017.2714860

Stability analysis of power converters in AC net¬works is complex due to the non-linear nature of the conversion systems. Whereas interactions of converters in DC networks can be studied by linearising about the operating point, the extension of the... Read More about Stability boundary analysis in single-phase grid-connected inverters with PLL by LTP theory.

Stability Assessment of Power-Converter-Based AC systems by LTP Theory: Eigenvalue Analysis and Harmonic Impedance Estimation (2017)
Journal Article
Salis, V., Costabeber, A., Cox, S. M., & Zanchetta, P. (2017). Stability Assessment of Power-Converter-Based AC systems by LTP Theory: Eigenvalue Analysis and Harmonic Impedance Estimation. IEEE Journal of Emerging and Selected Topics in Power Electronics, 5(4), 1513-1525. https://doi.org/10.1109/jestpe.2017.2714026

Stability analysis of power-converter-based AC systems poses serious challenges not only because of the non-linear nature of power converters, but also because linearisation is not generally applied around a steady-state operating point, as in the DC... Read More about Stability Assessment of Power-Converter-Based AC systems by LTP Theory: Eigenvalue Analysis and Harmonic Impedance Estimation.

Stability analysis of single-phase grid-feeding inverters with PLL using Harmonic Linearisation and Linear Time Periodic (LTP) theory (2016)
Conference Proceeding
Salis, V., Costabeber, A., Zanchetta, P., & Cox, S. M. (2016). Stability analysis of single-phase grid-feeding inverters with PLL using Harmonic Linearisation and Linear Time Periodic (LTP) theory.

A general method for the stability analysis of power converters is presented in this paper. The method is based on Harmonic Linearisation and Linear Time Periodic (LTP) analysis techniques and a single-phase grid-feeding inverter with PLL is consider... Read More about Stability analysis of single-phase grid-feeding inverters with PLL using Harmonic Linearisation and Linear Time Periodic (LTP) theory.

Dead-time effects on the voltage spectrum of a PWM inverter (2013)
Journal Article
Moore, D. C., Odavic, M., & Cox, S. M. (2014). Dead-time effects on the voltage spectrum of a PWM inverter. IMA Journal of Applied Mathematics, 79(6), https://doi.org/10.1093/imamat/hxt006

An inverter converts a direct-current power supply to an alternating-current power supply. This con- version is achieved by switching the output between the inputs at high frequency. The resulting output voltage may be described by a high-frequency t... Read More about Dead-time effects on the voltage spectrum of a PWM inverter.