Analysis of Inter Converter Interactions using Harmonic State Space Modeling

Motwani, Jayesh Kumar; Xue, Yaosuo; Nazari, Arash; Dong, Dong; Cvetkovic, Igor; Boroyevich, Dushan

doi:10.1109/egrid52793.2021.9662130

Cited by 1 publication

(3 citation statements)

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“…Matrices C and D are included in (24). The state variables and input matrices are shown in (25) and (26). For brevity and space restrictions, only selected row and column matrix 'A' are filled.…”

Section: Three Phase Multi-inverter Hss Modelmentioning

confidence: 99%

“…[24], [25] have tried similar Bessel-based approaches but are overly simplified. [26] explores utilizing Bessel functions for implementing dual-tone modulator, i.e. with two modulator inputs, but it cannot accommodate carrier phase information.…”

Section: Introductionmentioning

confidence: 99%

“…To instill the capability to capture time-varying components, several new concepts like sampling window and sampling frequency for HSS are introduced. While some optimizations have been explored earlier for harmonic domain modeling [26], [27], no literature yet, has tapped into the full potential of harmonic domain methods. HSS, in particular, has a key advantage over traditional methods due to its ability to select the harmonics under observation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling of Power Electronics Systems and PWM Modulators in Harmonic-State Space

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IEEE Open J. Power Electron.

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Modeling and simulation of the converter dominated systems have recently emerged as a monumental challenge. These simulations are useful for predicting instability and system's harmonic content, consequently assisting in developing better control and filters. But, as more and more converters are incorporated into the system, time-domain simulation models have a tradeoff of either limited accuracy or fewer simulated converters. On the contrary, frequency-domain modeling methods like linear timeinvariant models cannot capture the system's time-varying nature and complex converter interactions. The recently developed harmonic state space (HSS) modeling approach has emerged to provide an alternate avenue to model and simulate these converterdominated systems. HSS models, while accurate, until recently have not been able to reliably model the non-linear pulse width modulator. This paper solves this challenge and develops a new modulator model for harmonic domain models, including HSS. The proposed large-signal modulator is computationally less demanding and can reliably capture the harmonic spectrum of complex multi-converter systems till converter switching frequencies. Several optimization methods are introduced to utilize the unique multi-harmonic nature of HSS, making simulations faster than conventional time-domain methods. Results are verified with extensive simulations and experiments. The application, challenges, and future scope for this method are also highlighted.

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Section: Three Phase Multi-inverter Hss Modelmentioning

confidence: 99%