Optimal carrier based PWM strategy in overmodulation region of three-level inverter

Wu, Yongxu; Wang, Cong; Guo, Xiaojun; Gao, Yang; Cheng, Hong; Lu, Qijing

doi:10.1109/iciea.2009.5138425

Cited by 5 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, the OVM scheme is essential in electrical drive applications, if the drive is required to operate at extended speed including the field-weakening region and with higher torque and power characteristics [234], [235]. Hence the researchers tread in this field to give the significant performance of the MLI in OVM [158], [159].However, the mathematical complexity for achieving OVM is difficult. The CMV elimination in OVM is performed in [160] - [162].…”

Section: B Over Modulation Regionmentioning

confidence: 99%

“…But, when the modulation index greater than 0.907, both circular and hexagonal trajectory path is considered. This region is called as over modulation region [158], [159]. In OVM region, the Partial Elimination and Full Elimination of CMV can be done as studied in [160], [161].…”

Section: Open End Winding Five Phase Inverter: Figure 64 Five Phase Open End Winding Topologymentioning

confidence: 99%

See 1 more Smart Citation

A Comprehensive Review on Space Vector Modulation Techniques for Neutral Point Clamped Multi-Level Inverters

2021

View full text Add to dashboard Cite

The Neutral Point Clamped (NPC) Multi-Level Inverters (MLI) have been ruling the power electronics industries for the past two decades. The Multi-Carrier Pulse Width Modulation (MCPWM) is common PWM techniques which are widely used in NPC-MLI applications. However, MCPWM is not having a good impact on the balancing of DC-link voltages, Common Mode Voltage (CMV) and limiting the Total Harmonics Distortion (THD). The Selective Harmonic Elimination (SHE) technique is introduced for reducing the THD, however all the switching angles should be maintained less than π/2 to keep the eliminated harmonics at constant level which narrows down the modulation index range. Hence, in recent days Space Vector Modulation (SVM) technique is widely used in NPC-MLI, which gives better DC-link voltage balancing, self-neutral point balancing, near-zero CMV reduction, better-quality harmonics profile and switching loss minimization. Hence, it is a preferred solution for the majority of electrical conversion applications such as electric traction, high power industrial drives, renewable power generation, and gridconnected inverters, etc. The paper gives a comprehensive review of the SVM for NPC-MLI. First, this paper deliberates the state of art for two-level SVM and extends it to three-level (3L) SVM. Also compares the 3L SVM performance with other MCPWM techniques. Followed by the various modified MLI SVM techniques in terms of their implementations, DC-link capacitor balancing, and reduction of CMV. Further, the review of MLI SVM is widened to open-end winding Inverters and multiphase MLIs. The final part of this paper discussed the future trends and research directions on MLI SVM techniques and its applications.

show abstract