1. Hu, J., Shan, H., Kang, C., et al.: Dynamic operation simulation of PV Grid-connected urban rail transit power supply system. Urban Mass Transit 26(05), 243–250 (2023). (in Chinese)
2. Chen, Z., Yan, C., Zhu, G., et al.: Phase locked technology of regenerative braking energy inverter device in UMT. Urban Mass Transit 19(02), 46–49+64 (2016). (in Chinese)
3. Hu, J., He, Y.: Modeling and control of grid-connected voltage-sourced converters under generalized unbalanced operation conditions. IEEE Trans. Energy Convers. 23(3), 903–913 (2008)
4. Wang, Y., Wang, H., Zhu, B., et al.: Control strategy of grid-connected inverter based on VSG under unbalanced grid voltage. Renew. Energy Resour. 40(05), 696–702 (2022). (in Chinese)
5. Wang, N., Liu, X., Wang, H.: Study on control strategy of photovoltaic grid-connected inverter under unbalanced grid voltage. Shanxi Electr. Power 236(05), 52–57 (2022). (in Chinese)