A Resonant DC-Link Inverter and Its Voltage Compensation Strategy

Song, Jiaxiang; Chu, Enhui; Wang, Wenwen; Gao, Linyan; Li, Jingjing; Lin, Xin

doi:10.1109/jestpe.2022.3210304

Cited by 12 publications

(7 citation statements)

References 26 publications

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“…It can be seen from ( 15) and ( 16) that the suggested inverter in this paper has a lower current burden on the main switches compared to the one mentioned in literature [6] within the full load range. It is concluded that the current burden issue of the main switches is not fully resolved in literature [6], however the inverter suggested in this paper completely declines the main switches' current burden. Figure 9.…”

Section: Comparison Of Current Burden Of Main Switchmentioning

confidence: 80%

“…Figure . 5 demonstrates the key mode of the resonant DC link inverter suggested in literature [6]. Through the analysis of the whole operation process of the circuit, it can be seen that under this mode, the current passing through the main switches makes main switches' current burden reach the maximum at a certain time, the current passing through the main switch S1 is:…”

Section: Comparison Of Current Burden Of Main Switchmentioning

confidence: 99%

“…With the aim of resolving this issue, literature [6] proposed an improved auxiliary circuit structure.…”

Section: Introductionmentioning

confidence: 99%

“…The topology shunt the auxiliary loop's resonant current from the load' current by connecting an auxiliary switch in parallel. However, it neglected the fact that the flow of resonant current, generated by the auxiliary resonant inductor and the capacitor in parallel with the main switches, through the main switches during the resonant process, so the circuit structure in literature [6] does not completely solve the issue of large current burden of the main inverter switches. With the intention of completely reducing the main switches' current burden, this paper proposes a novel resonant DC link inverter.…”

Section: Introductionmentioning

confidence: 99%

“…With the intention of completely reducing the main switches' current burden, this paper proposes a novel resonant DC link inverter. This inverter has two main advantages: 1) In comparison to the literature [6], the inverter circuit suggested in this paper eliminates the need for parallel capacitors in the main switches, while maintaining the same configuration as the hard-switching inverter, and the auxiliary circuit keeps the number of switches and diodes unchanged.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A simple and efficient resonant DC link inverter with low current stress on main switch

Jia,

Xia,

Song

2024

J. Phys.: Conf. Ser.

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This paper proposes a simple and efficient resonant DC link inverter topology with low current stress on main switches. The inverter has a straightforward structure and is readily controllable, avoids the auxiliary resonant current passing through the main switches of the inverter, and the current passing through the main switches remains consistently equivalent to the load current, thus reducing the current stress and the switching loss of the main switches, thereby the inverter’s efficiency is increased. The proposed inverter’s operating principle is examined and contrasted with the inverter described in the literature. Ultimately, the validity of the resonant DC link inverter is demonstrated through simulation.

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Section: Comparison Of Current Burden Of Main Switchmentioning

confidence: 80%

Section: Comparison Of Current Burden Of Main Switchmentioning

confidence: 99%

“…With the aim of resolving this issue, literature [6] proposed an improved auxiliary circuit structure.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A simple and efficient resonant DC link inverter with low current stress on main switch

Jia,

Xia,

Song

2024

J. Phys.: Conf. Ser.

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Analysis and design of an efficient three‐phase voltage source inverter with performance optimization

Wang,

He,

Wang

2024

Circuit Theory & Apps

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SummaryThe paper designs a novel efficient three‐phase voltage source inverter with performance optimization. When auxiliary circuits connected in parallel with every bridge arm are involved in working process of the designed inverter, main switches will realize zero‐voltage switching in the wide load range, which is beneficial for further decline of the loss of main switches. Furthermore, the optimized duty cycle of the gate drive signal of auxiliary switches is used to restrict circuiting current loss. Besides, when the designed inverter works in a dead zone, the resonance will occur in the auxiliary circuits to cause the output phase voltage to vary from zero or the DC supply voltage to the DC supply voltage or zero as soon as possible, which is beneficial for further decline of the output phase voltage error and the suppression of dead effect. The paper provides relevant analysis on each working status within a switching period along with design requirements. By analyzing test waveforms, it affirms that main switches realize zero‐voltage switching. The efficiency of the designed inverter reaches 98.8% at rating condition. The experiment affirms that the designed inverter has an edge over another two inverters for comparison in performance optimization.

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An improved soft-switching inverter to eliminate pre-charge current

Ni,

Dong

2024

J. Phys.: Conf. Ser.

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To address the current stress problem brought on by the auxiliary resonant pole inverter’s pre-charge state, this paper gives an improved auxiliary circuit based on the original inverter. The improved circuit avoids a pre-charge state by adding auxiliary capacitors to form a resonant branch. In contrast to the original inverter, this inverter lowers the current stress on both the auxiliary and primary switches by resolving the pre-charge state’s current stress issue. As a result, the inverter’s losses are decreased, which raises the system’s efficiency. The working principle of this inverter is given in the paper. After a comparison and analysis of the inverter’s pre-charge state, an experiment is used to confirm the device’s viability.

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A Resonant DC-Link Inverter and Its Voltage Compensation Strategy

Cited by 12 publications

References 26 publications

A simple and efficient resonant DC link inverter with low current stress on main switch

A simple and efficient resonant DC link inverter with low current stress on main switch

Analysis and design of an efficient three‐phase voltage source inverter with performance optimization

An improved soft-switching inverter to eliminate pre-charge current

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