A Novel Series 24-Pulse Rectifier Operating in Low Harmonic State Based on Auxiliary Passive Injection at DC Side
Abstract
:1. Introduction
2. Materials and Methods
2.1. Topology Analysis
2.2. Operating Modal Analysis of APHIC
2.3. Operating Characteristics Analysis of Rectifier
2.3.1. 24-Step Voltage Formation Process
2.3.2. Optimal Turns Ratio Design of AST
3. Verification and Analysis
3.1. Verification of Rectifier Operating State under Resistive Load
3.2. Verification of Rectifier Operating State under Resistive Inductive Load
3.3. Analysis of Rectifier Fault Tolerance during APHIC Diode Open-Circuit Failure
3.4. Comparison of Different Harmonic Suppression Methods
4. Conclusions
- (1)
- The realization of this rectifier relies on the auxiliary passive harmonic injection circuit, including the passive harmonic injection auxiliary transformer and the auxiliary single-phase full bridge rectifier circuit; the rectifiers all use passive devices, which are simple in structure, strong in anti-jamming capability, and easy to realize.
- (2)
- Compared with the 12-pulse rectifier, the proposed rectifier can multiply the number of pulses of the input voltage from 12 pulses to 24 pulses, the THD value of the input voltage is reduced from 14.03% to 4.86%, and the waveform of the input voltage is closer to a sinusoidal waveform. The THD value of the input current on the AC side is reduced from 5.30% to 2.16%, which is nearly sinusoidalized. The harmonic suppression ability of the rectifier has been greatly improved. When the turn ratio of the passive harmonic injection transformer is 2.02, the input power factor is increased from 98.86% to 99.83%, which reduces the pollution of the rectifier reactive current on the grid and significantly improves the power quality.
- (3)
- Robustness. The proposed rectifier in the auxiliary diode open circuit fault case has a good system fault tolerance in this state; although it will have a certain impact on the AC side power quality, it can still realize the rectification function, and the rectification effect is better than that of the series 12-pulse wave rectifier.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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NO. of uan | Value of uan |
---|---|
u1 | |
u2 | |
u3 | |
u4 | |
u5 | |
u6 |
Parameter Name | Value |
---|---|
The input phase voltage, Um | 380 V |
Inductances, Ls | 20 mH |
The turn ratio, k1, k2 | k1 = 1.732:1, k2 = 1:1 |
The turn ratio, m | 2.02 |
Capacitors of C1(C2) | 3300 μF |
Resistive load, R | 50 Ω |
Inductance load, L | 20 mH |
Frequency | 50 Hz |
Topology | Pulse Number | THD (uan) | THD (ia) | Number of Auxiliary Diodes | Types of Injected Transformers |
---|---|---|---|---|---|
No injection circuit | 12 | 14.04% | 5.30% | 0 | —— |
Literature [28] | 24 | 7.52% | —— | 4 | One single-phase transformer (no taps) |
Literature [29] | 24 | 3.34% | 2.65% | 2 | One single-phase transformer (with taps) |
Literature [30] | 24 | 4.45% | 2.51% | 2 | One single-phase transformer (with taps) |
This paper | 24 | 4.86% | 2.16% | 4 | One single-phase transformer (no taps) |
Literature [31] | 36 | 4.61% | —— | 6 | Two single-phase transformers (with taps) |
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Chen, X.; Bai, T.; Wang, Y.; Gong, J.; Mu, X.; Chang, Z. A Novel Series 24-Pulse Rectifier Operating in Low Harmonic State Based on Auxiliary Passive Injection at DC Side. Electronics 2024, 13, 1160. https://doi.org/10.3390/electronics13061160
Chen X, Bai T, Wang Y, Gong J, Mu X, Chang Z. A Novel Series 24-Pulse Rectifier Operating in Low Harmonic State Based on Auxiliary Passive Injection at DC Side. Electronics. 2024; 13(6):1160. https://doi.org/10.3390/electronics13061160
Chicago/Turabian StyleChen, Xiaoqiang, Tun Bai, Ying Wang, Jiangyun Gong, Xiuqing Mu, and Zhanning Chang. 2024. "A Novel Series 24-Pulse Rectifier Operating in Low Harmonic State Based on Auxiliary Passive Injection at DC Side" Electronics 13, no. 6: 1160. https://doi.org/10.3390/electronics13061160
APA StyleChen, X., Bai, T., Wang, Y., Gong, J., Mu, X., & Chang, Z. (2024). A Novel Series 24-Pulse Rectifier Operating in Low Harmonic State Based on Auxiliary Passive Injection at DC Side. Electronics, 13(6), 1160. https://doi.org/10.3390/electronics13061160