This paper presents the development of a small signal analytical state-space model for a Full Bridge MMC converter. Building on the existing Half Bridge MMC analytical model, all new model equations are derived considering the new control variable, DC modulation index Mdc. The model is of 29th order, and it is developed in 3 rotating dq coordinate frames: zero sequence, fundamental frequency and second harmonic. The model is verified against detailed non-linear EMTP model for a 1 GW, 640 kV MMC test system. The verification demonstrates good accuracy for all model variables considering a range of inputs on the reference and disturbance signals. The developed model is employed to study eigenvalues position as the Mdc controller gains change, and it is concluded that Mdc controller improves damping of the dominant oscillatory mode.
|Title of host publication||2022 IEEE Power & Energy Society General Meeting (PESGM)|
|Number of pages||5|
|Publication status||Published - 1 Dec 2022|
|Event||2022 IEEE Power & Energy Society General Meeting (GM): IEEE PES - Sheraton Denver Downtown Hotel, Denver, United States|
Duration: 17 Jul 2022 → 21 Jul 2022
|Name||IEEE Power & Energy Society General Meeting|
|Conference||2022 IEEE Power & Energy Society General Meeting (GM)|
|Abbreviated title||IEEE PES|
|Period||17/07/22 → 21/07/22|
Bibliographical noteThis project has received funding from the Royal Society exchange grant.
- Full bridge MMC converter
- HVDC transmission