Dynamic Phasor Modeling of Three Phase Voltage Source Inverters

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

doi:10.1109/egrid52793.2021.9712467

Cited by 3 publications

(2 citation statements)

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“…7. The control input ⟨e⟩ k can be expressed as a phasor at each frequency k [24]. The control input can be multiplied with the complex valued gain of the controller at the corresponding frequency to compute the controller output phasors.…”

Section: A Fully Dpmentioning

confidence: 99%

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Hybrid Dynamic Phasor Modeling Approaches for Accurate Closed-Loop Simulation of Power Converters

et al. 2022

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Modelling the fast dynamics of power converters is of growing concern in power grids and Microgrids. Dynamic phasor (DP) concept has been widely applied to switched power converter for modelling fast transients efficiently due to the inherent frequency shift property of DPs. The dynamics introduced by the DC/AC power converters depend on the controllers, which are implemented either in the stationary frame or on the synchronous reference frame (SRF). Hybrid closed-loop modelling methods that consider DP-based power converter plant model are not established and the applicability and accuracy of such hybrid approaches are not fully understood. This paper attempts to address this gap by proposing two hybrid closed-loop modelling approaches: Hybrid DP-DQ and Hybrid DP-EMT and discusses the applicability and accuracy for various controller types. Furthermore, this paper presents a DP switched model of single and three phase two level power converter and discusses the selection of harmonics to reduce model complexity. The proposed hybrid approaches were validated against detailed switched power converter models and for a wide range of scenarios, the Hybrid DP-EMT method is found to be superior compared other methods. Finally, application dependent recommendations are made for the selection of suitable hybrid closed-loop model for the accurate simulation of single phase and three phase power converters.

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Section: A Fully Dpmentioning

confidence: 99%

“…The second step is the calculation of DQ domain signals from the space-phasors as given in (24) which is similar to (20). In the case of single phase converters, conversion to space-phasors is not necessary and ( 24) can be directly implemented.…”

Section: Mr Ykmentioning

confidence: 99%