Vector Control of Three-Phase Solar Farm Converters Based on Fictive-Axis Emulation

Kai Kang (Electrical and Computer Systems Engineering Department, Monash University, Melbourne, Victoria, Australia)
Qiaoyu Wang (Electrical and Computer Systems Engineering Department, Monash University, Melbourne, Victoria, Australia)
Jiayi Meng (Faculty of Arts, Melbourne University, Melbourne, Victoria, Australia)

Abstract


In this paper, a new method for adjusting the current of three-phase voltage source DC-AC converter in orthogonal (DQ) reference frame is presented. In the DQ reference system, AC variable appears in the constant form of DC, making the controller design the same as the DC-DC converter [1]. It provides controllable gain benefits at the steady-state operating point, and finally realizes zero steady-state error [2]. In addition, the creative analytical model is dedicated to building up a series of virtual quantities orthogonal to the actual single-phase system. In general, orthogonal imaginary numbers get the reference signal by delaying the real quantity by a quarter period. However, the introduction of such time delay makes the dynamic response of the system worse. In this paper, orthogonal quantities are generated from a virtual axis system parallel to the real axis, which can effectively improve the dynamic performance of traditional methods without increasing the complexity of controller structure. Through PSCAD simulation, the ideal experimental results are obtained.


Keywords


Current Controller;Fictive-axis Emulation (FAE);Three-phase voltage-source converters (VSCs);Vector controller

Full Text:

PDF

References


[1] Padhee, S., Pati, U. C., Mahapatra, K. Closed-loop parametric identification of DC-DC converter. Proceedings of the Institution of Mechanical Engineers,Part I: Journal of Systems and Control Engineering, 2018, 232(10): 1429-1438.

[2] Chung, K., Hong, S.-K., Kwon, O.-K. A fully integrated switched-capacitor DC-DC converter with hybrid output regulation. Analog Integrated Circuits and Signal Processing, 2018, 94(1): 117-126.

[3] Serra, F. M., De Angelo, C. H., Forchetti, D. G. IDAPBC control of a DC-AC converter for sinusoidal three-phase voltage generation. International Journal of Electronics, 2017, 104(1): 93-110.

[4] Zhou, X., Xu, J., Zhong, S. Single-Stage Soft-Switching Low-Distortion Bipolar PWM Modulation High-Frequency-Link DC-AC Converter With Clamping Circuits. IEEE Transactions on Industrial Electronics, 2018, 65(10): 7719-7729.

[5] Xie, M., Wen, H., Zhu, C., Yang, Y. A method to improve the transient response of dq-frame cascaded delayed-signal-cancellation PLL. Electric Power Systems Research, 2018, 155: 121-130.

[6] Burgos-Mellado, C., Costabeber, A., Sumner, M., Cárdenas-Dobson, R., Sáez, D. Small-Signal Modelling and Stability Assessment of Phase-Locked Loops in Weak Grids. Energies, 2019, 12(7).

[7] Khan, P. F., Sengottuvel, S., Patel, R., Gireesan, K., Baskaran, R., Mani, A. Design and Implementation of a Discrete-Time Proportional Integral (PI) Controller for the Temperature Control of a Heating Pad. SLAS Technology, 2018, 23(6): 614-623.

[8] Jigang, H., Hui, F., Jie, W. A PI controller optimized with modified differential evolution algorithm for speed control of BLDC motor. Automatika, 2019, 60(2): 135-148.

[9] Sivaraman, P., Prem. PR controller design and stability analysis of single stage T-source inverter based solar PV system. Journal of the Chinese Institute of Engineers, 2017, 40(3): 235-245.

[10] You, W. X., Zhou, Z. H., Chang, J. X., Sun, G. Comparative Study on Several PQ and V/f Controller Models in Micro-Grid. Advanced Materials Research, 2014, 1044: 738-742.

[11] Singh, K. S., Lavanya, K., Rao, M. U. M. BATS echolocation algorithm tuned PI controller for PQ improvement in a grid connected wind energy system. 2016 International Conference on Electrical, Electronics, and Optimization Techniques (ICEEOT), 2016, 4101-4105.



DOI: https://doi.org/10.30564/jcsr.v2i3.2117

Refbacks

  • There are currently no refbacks.
Copyright © 2020 Author(s)


Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.