Hybrid phase-shifted modulation method for hybrid cascaded H-bridge inverters

Hu, Wenhua; Guo, Jia-Min; Liu, Jianfeng; Yang, Yuan

doi:10.1007/s43236-021-00287-9

Cited by 4 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cascaded inverter topology in comparison to a conventional three-level inverter allows a decrease in current and voltage harmonics and reduced switching losses of the inverter by distributing power over two inverters. In the proposed reactive power compensator, the hybrid modulation technique [22][23][24] is used for the forming of the compensator output voltage. In order to reduce switching losses, the majority of inverter power is produced using the first cascade operating at low (grid) frequency.…”

Section: Topology Of Static Synchronous Reactive Power Compensator Ba...mentioning

confidence: 99%

Cascaded Multilevel Inverter-Based Asymmetric Static Synchronous Compensator of Reactive Power

et al. 2022

View full text Add to dashboard Cite

The topology of the static synchronous compensator of reactive power for a low-voltage three-phase utility grid capable of asymmetric reactive power compensation in grid phases has been proposed and analysed. It is implemented using separate, independent cascaded H-bridge multilevel inverters for each phase. Every inverter includes two H-bridge cascades. The first cascade operating at grid frequency is implemented using thyristors, and the second one—operating at high frequency is based on the high-speed MOSFET transistors. The investigation shows that the proposed compensator is able to compensate the reactive power in a low-voltage three-phase grid when phases are loaded by highly asymmetrical reactive loads and provides up to three times lower power losses in the compensator as compared with the situation when the compensator is based on the conventional three-level inverters implemented using IGBT transistors.

show abstract

Section: Topology Of Static Synchronous Reactive Power Compensator Ba...mentioning

confidence: 99%

Cascaded Multilevel Inverter-Based Asymmetric Static Synchronous Compensator of Reactive Power

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Generally, when compared with single H-bridge inverters, not only do CHB ers have better waveform quality, but they are also more suitable for high voltage ers [14,15]. When compared with the PS-PWM strategy, the LS-PWM strategy has waveform quality of the line voltage [16,17].…”

Section: Introduction Of the Pb-rpwm Strategymentioning

confidence: 99%

Modified RPWM Strategy Based on Level-Shifted Random Carrier and Power Balance to Reduce the PWM Voltage Noise in Three-Phase CHB Inverters

2023

View full text Add to dashboard Cite

Aimed at the pulse width modulation (PWM) voltage noise and power imbalance in three-phase cascaded H-Bridge (CHB) inverters, a modified random PWM (RPWM) strategy, named the power-balanced RPWM (PB-RPWM) strategy, is proposed in this paper. The PB-RPWM strategy mainly includes three steps: (1) random pulse signals are generated by compared modulation wave with level-shifted random carriers; (2) the random pulse signals are circularly distributed between CHB units by a logic operation method, and then the driving pulse signals of switching devices are produced; (3) the driving pulse signals are used to control the inverter. Under the PB-RPWM strategy, the spectra of the line voltage become uniform and continuous, that is, the PWM voltage noise of the line voltage can be effectively reduced. The output voltage of a single H-bridge unit can contain three basic voltages within 3/2 TA, that is, the power balance between CHB units can be realized. When compared with conventional non-random and random PWM strategies, the PB-RPWM strategy has a lower PWM voltage noise and smaller total harmonic distortion (THD). When compared with the level-shifted PWM (LS-PWM) strategy, the PB-RPWM strategy has a balanced power performance. The effectiveness and feasibility of the PB-RPWM strategy is verified by abundant simulations and experiments.

show abstract

Power-Balanced Modified TPWM Strategy for Three-Phase Cascaded H-bridge Inverters

Liu,

Gong,

Zhang

et al. 2024

Lecture Notes in Electrical Engineering

View full text Add to dashboard Cite

Hybrid phase-shifted modulation method for hybrid cascaded H-bridge inverters

Cited by 4 publications

References 24 publications

Cascaded Multilevel Inverter-Based Asymmetric Static Synchronous Compensator of Reactive Power

Cascaded Multilevel Inverter-Based Asymmetric Static Synchronous Compensator of Reactive Power

Modified RPWM Strategy Based on Level-Shifted Random Carrier and Power Balance to Reduce the PWM Voltage Noise in Three-Phase CHB Inverters

Power-Balanced Modified TPWM Strategy for Three-Phase Cascaded H-bridge Inverters

Contact Info

Product

Resources

About