An Extremely High Efficient Three-Level Active Neutral-Point-Clamped Converter Comprising SiC and Si Hybrid Power Stages

Guan, Qingxin; Li, Chushan; Zhang, Yu; Wang, Shuai; Xu, Dewei; Li, Wuhua; Ma, Hao

doi:10.1109/tpel.2017.2784821

Cited by 176 publications

(64 citation statements)

References 19 publications

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“…The HANPC topology was presented in [4] to realize high power density for a 3L-NPC inverter with SiC-MOSFETs. Figure 3 shows the circuit configuration of a grid-connected three-phase HANPC with DC power source (V DC ) and filter inductor (L).…”

Section: Operation Principlementioning

confidence: 99%

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Fault Diagnosis of Open-Switch Failure in a Grid-Connected Three-Level Si/SiC Hybrid ANPC Inverter

Kwon

Kim

et al. 2020

Electronics

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A diagnostic method for an open-circuit switch failure in a hybrid active neutral-point clamped (HANPC) inverter is proposed in this paper. The switching leg of the HANPC inverter consists of four silicon insulated gate bipolar transistors and two silicon carbide metal-oxide-semiconductor field-effect transistors to achieve higher efficiency and power density compared to conventional neutral-point clamped inverters. When an open-circuit failure occurs in a switching device, the output current is severely distorted, causing damage to the inverter and the connected loads. The proposed diagnostic method aims to detect the open-switch failure and protect the related devices without additional sensors or circuits. The faulty conditions of six different switches are investigated based on the current distortion in the stationary reference frame. By analyzing the individual characteristic of each switch failure, it is possible to detect the exact location of the failed switch in a short period. The effectiveness and feasibility of the proposed fault-diagnostic method are verified using simulation and experimental results.

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Section: Operation Principlementioning

confidence: 99%

“…The three-level hybrid active NPC (3L-HANPC) inverter was introduced to get better efficiency and achieve a uniform power-loss profile in both power-flow directions [4]. The 3L-HANPC is composed of six switching devices, four Si-IGBTs, and two silicon carbide metal-oxide-semiconductor field-effect transistors (SiC-MOSFETs) in a leg.…”

Section: Introductionmentioning

confidence: 99%

Fault Diagnosis of Open-Switch Failure in a Grid-Connected Three-Level Si/SiC Hybrid ANPC Inverter

Kwon

Kim

et al. 2020

Electronics

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“…As far as the price of SiC devices is concerned, if all six switching devices in the ANPC topology are replaced with SiC devices, the high cost will limit the widespread application of such products. Considering this problem, many studies have proposed hybrid applications of SiC and silicon (Si) devices, that is, only some of the devices in a system or topology are replaced with SiC devices [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. In [5], a Si CSI (current source inverter)/SiC VSI (voltage source inverter) series inverter system was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…This hybrid topology can increase efficiency by 66%. In addition, based on the diversity of ANPC topology commutation modes, various hybrid SiC and Si configuration schemes have also been proposed [8][9][10][11][12][13][14][15][16][17][18][19]. In [8][9][10][11], the outer tubes connected to the bus and clamp tubes in the ANPC topology were replaced by SiC devices.…”

Section: Introductionmentioning

confidence: 99%

“…In [13][14][15][16][17][18][19], the two tubes in the ANPC topology, except the outer tubes connected to the bus and clamp tubes, were replaced by SiC devices. In [13][14][15], specific SPWM (sinusoidal pulse width modulation) modulation strategies were applied to concentrate switching losses on SiC devices to achieve high efficiency and high power density. In [16,17], new SVPWM modulations were used to concentrate switching losses on SiC devices.…”

Section: Introductionmentioning

confidence: 99%

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A High-Efficiency Three-Level ANPC Inverter Based on Hybrid SiC and Si Devices

et al. 2020

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Silicon carbide (SiC) devices have excellent performance, such as higher switching frequency and lower switching loss compared with traditional silicon (Si) devices. The application of SiC devices in inverters can achieve higher efficiency and power density. In recent years, the production process of SiC devices has become more mature, but the cost is still several times that of traditional Si devices. In order to balance cost and efficiency, replacing only some of the Si devices with SiC devices in a topology is a better choice. This paper proposed a high-efficiency hybrid active neutral point clamped (ANPC) three-level inverter which has only two SiC devices and the other devices are Si devices. A specific modulation strategy was applied to concentrate switching losses on the SiC devices and reduce the on-state loss through parallel operation during freewheeling intervals. Theoretical efficiency curves and experimental verification of the proposed hybrid scheme with Si-only and SiC-only schemes were carried out.

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Improved Space Vector Modulation of Single-Phase ANPC Three-Level Converter with Balanced Loss Distribution

Yang,

Li,

Guo

et al. 2024

Lecture Notes in Electrical Engineering

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An Extremely High Efficient Three-Level Active Neutral-Point-Clamped Converter Comprising SiC and Si Hybrid Power Stages

Cited by 176 publications

References 19 publications

Fault Diagnosis of Open-Switch Failure in a Grid-Connected Three-Level Si/SiC Hybrid ANPC Inverter

Fault Diagnosis of Open-Switch Failure in a Grid-Connected Three-Level Si/SiC Hybrid ANPC Inverter

A High-Efficiency Three-Level ANPC Inverter Based on Hybrid SiC and Si Devices

Improved Space Vector Modulation of Single-Phase ANPC Three-Level Converter with Balanced Loss Distribution

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