A novel PLL based algorithm for seamless transfer from autonomous to grid mode for utility interactive converters

Shan, S; Umanand, L.

doi:10.1109/appeec.2017.8308925

Cited by 1 publication

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The switch passes the instantaneous angular difference (Δθ) of the PCC space vector with respect to the PLL d − q frame as an enhancement term to the conventional PLL. The concept of enhancement of PLL and switching logic has been presented previously in [14].…”

Section: Proposed Configurationmentioning

confidence: 99%

“…However, in the event of a phase jump, a high overcurrent will be introduced in the system and this causes the OCI output to be 1. The detailed working of OCI is given in [14]. The OCI output being 1 activates the switching block which appropriately produces a switching function for the switch S.…”

Section: A the Acceleration Indicator (Aci)mentioning

confidence: 99%

“…Hence the switching function block is activated and the angular difference (Δθ) at the instant of harmonic introduction (say at t = t 0 ) will added to the PLL. The angle caluclation is done based on the table I and equation (14). The angle calculation block informs the HMI block of the angle added.…”

Section: The Harmonic Indicatormentioning

confidence: 99%

See 2 more Smart Citations

A Simple Indicator based PLL for Distorted Grid Conditions

Shan

Umanand

2018

2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)

Self Cite

View full text Add to dashboard Cite

This paper proposes a simple indicator based phase lock loop (PLL) which is capable of producing distortionless reference waveforms in case of the presence of unbalance and harmonics in the grid. The proposed configuration also has a faster dynamic response thus catering to phase jumps as well. Unlike the existing research works, this proposal doesnt make use of filtering, signal modifications or advanced algorithms. The simplest form of synchronous reference frame (SRF) PLL is retained and effectively made use of in the simplest way to achieve the objectives. The proposed concept makes use of the idea of controlling the instantaneous acceleration between the point of common coupling (PCC) space vector and the existing d−q frame by adding the error to the PLL. This addition is activated or disabled depending on the conditions like phase jump, unbalance and harmonics leading to the acceleration. Separate algorithms indicate the condition. The proposed concept is validated with sufficient simulation results.

show abstract

Section: Proposed Configurationmentioning

confidence: 99%

Section: A the Acceleration Indicator (Aci)mentioning

confidence: 99%