Impedance Modeling and Stability Analysis for Cascade System of Three-Phase PWM Rectifier and LLC Resonant Converter
Abstract
:1. Introduction
2. The Stability Criterion of Three-Phase Balanced Voltage PWM Rectifier and LLC Resonant Converter Cascade System
3. Output Impedance Modeling of Three-Phase Balanced PWM Rectifier
4. Modeling of Input Impedance of LLC Resonant Converter
5. Simulation Verification and Stability Analysis of Cascade System
5.1. Simulation Verification and Stability Analysis of PWM Rectifier
5.2. Simulation Verification and Stability Analysis of LLC Resonant Converter
5.3. Simulation Verification and Stability Analysis of Cascaded System
6. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Parameters | Value |
---|---|
AC line voltage | 100 V |
DC voltage | 200 V |
AC inductance | 1.8 mH |
DC capacitance | 2200 uF |
Resistance of load | 36 Ω |
Voltage outer loop parameters (proportion) | 0.75 |
Voltage outer loop control parameters (integral) | 50 |
Current inner loop control parameters (proportion) | 10 |
Current inner loop control parameters (integral) | 400 |
Parameters | Symbol | Value |
---|---|---|
LLC switching frequency | fs | 40 k |
Transformer turn ratio | n | 1 |
Transformer excitation inductance | Lm | 1 m |
Transformer leakage inductance | Lr | 30.7 u |
Resonant capacitance | Cr | 0.33 u |
Output filter capacitance | Co | 500 u |
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Wang, R.; Wu, Y.; He, G.; Lv, Y.; Du, J.; Li, Y. Impedance Modeling and Stability Analysis for Cascade System of Three-Phase PWM Rectifier and LLC Resonant Converter. Energies 2018, 11, 3050. https://doi.org/10.3390/en11113050
Wang R, Wu Y, He G, Lv Y, Du J, Li Y. Impedance Modeling and Stability Analysis for Cascade System of Three-Phase PWM Rectifier and LLC Resonant Converter. Energies. 2018; 11(11):3050. https://doi.org/10.3390/en11113050
Chicago/Turabian StyleWang, Rutian, Yuyang Wu, Guoqing He, Ying Lv, Jiaxing Du, and Yanhao Li. 2018. "Impedance Modeling and Stability Analysis for Cascade System of Three-Phase PWM Rectifier and LLC Resonant Converter" Energies 11, no. 11: 3050. https://doi.org/10.3390/en11113050