A New CUK-Based Z-Source Inverter
Abstract
:1. Introduction
2. Topologies Classification
2.1. CUK-Based ZSI
2.2. Mode Analysis of Proposed CUK-Based ZSI
- First mode: In this mode, switches S1 and S3 are turned on, whereas switch S2 is turned off, as depicted in Figure 3a. The inductor Lf is magnetized by input voltage , and capacitors C1, C2 and C0 are charged; C3 is discharged. The equations of this mode can be expressed as:
- Second mode: In this mode, switches S1 and S2 are turned on, whereas switch S3 is turned off, as depicted in Figure 3b. The inductor Lf is magnetized by input voltage , and capacitors C1, C2 and C0 are discharged; C3 is charged. The equations of this mode can be expressed as:
- Third mode: In this mode, switches S2 and S3 are turned on, whereas switch S1 is turned off, as depicted in Figure 3c. The capacitors C1, C2 and C0 are charged; C3 is discharged.
2.3. Control of Proposed CUK-Based ZSI
3. Device Stress Calculation and Passive Component Design
3.1. Device Stress Calculation
3.2. Passive Component Design
4. Simulation and Comparison
4.1. Simulation Conditions and Results
4.2. Comparison
5. Experimental Verification
6. Conclusions
Author Contributions
Funding
Conflicts of Interest
Abbreviations
Acronims | |
ZSI | Z-source inverter |
VSI | Voltage source inverter |
TSTS | Three-switch three-state |
FFT | Fast Fourier transform |
THD | Total harmonic distortion |
Nomenclature | |
Peak voltage gain | |
k | Maximum boost radio |
, , | Duty cycle functions |
Output voltage angular frequency | |
S1, S2, S3 | Semiconductor switches |
DC input voltage | |
Voltage of inductors | |
Voltage of capacitors | |
Voltage of switches | |
Current of inductors | |
Current of capacitors | |
Output peak current | |
Current ripple of inductors | |
Voltage ripple of capacitors | |
Switching period | |
fs | Switching frequency |
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Parameters | Proposed Topologies |
---|---|
Input voltage, Vin | 90 V |
Output voltage (rms), Vo | 110 V |
Switching frequency, fs | 20 kHz |
Output voltage gain, A | 1.75 |
Maximum boost ratio, k | 2 |
Inductance Lf | 0.48 mH |
Z-impedance inductance, L1 and L2 | 1 mH |
Z-impedance capacitance, C1 and C2 | 46.3 |
Capacitance C3 | 27.4 |
Inductance L3 | 1.45 mH |
Output capacitance, C0 | 10 |
Z-Source Inverter Topologies | Total no. Component | Complexness | Power Density | Cost | Voltage Gain | Switches’ Voltage Stress | THD % | ||
---|---|---|---|---|---|---|---|---|---|
S | L | C | |||||||
Semi-ZS-Based in [24] | 2 | 3 | 3 | simple | high | low | <1 | / | / |
Semi-ZSI in [22] | 2 | 2 | 3 | simple | high | low | <1 | / | |
Boost-based TSTS-ZSI in [23] | 3 | 3 | 3 | simple | high | low | >1 | 2.82 | |
Buck‒boost-based TSTS-ZSI in [23] | 3 | 3 | 4 | simple | High | low | >1 | 3.15 | |
Proposed | 3 | 4 | 4 | simple | High | low | >1 | 2.71 |
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Wang, B.; Tang, W. A New CUK-Based Z-Source Inverter. Electronics 2018, 7, 313. https://doi.org/10.3390/electronics7110313
Wang B, Tang W. A New CUK-Based Z-Source Inverter. Electronics. 2018; 7(11):313. https://doi.org/10.3390/electronics7110313
Chicago/Turabian StyleWang, Baocheng, and Wei Tang. 2018. "A New CUK-Based Z-Source Inverter" Electronics 7, no. 11: 313. https://doi.org/10.3390/electronics7110313
APA StyleWang, B., & Tang, W. (2018). A New CUK-Based Z-Source Inverter. Electronics, 7(11), 313. https://doi.org/10.3390/electronics7110313