The inverter can output a fundamental voltage four times the dc-link voltage. However, there is no doubt that with the increase of the dc sources number, the cost of the entire system will increase significantly.
In addition to having fewer components and higher efficiency, the dc voltage utilization ratio of the inverter is 2.5 times that of the traditional inverter such as Neutral Point Clamped (NPC), FC, and Active NPC (ANPC).
The higher operation efficiency can also be obtained, reaching 98.1%. With the same power, the proposed inverter has higher efficiency than other advanced inverters. In general, the proposed inverter has great advantages in the number of components, voltage stress of switching devices, dc voltage utilization and operation efficiency.
The proposed inverter can synthesize up to nine voltage levels with only ten switching devices and a flying capacitor (FC). To improve the operation efficiency, a hybrid-device topology based on Si and SiC is proposed. The total device cost of this inverter is much lower than the all-SiC-based inverter.
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This will in turn reduce the maximum active- and reactive-power that the inverter could otherwise provide, unless PWM references are adjusted. In this paper, an atypical PWM …
It can not only improve the utilization of DC voltage, but also enlarge the power balance constraint range between the units in the phase of cascaded PV inverter, so as to …
Therefore, they are widely used in high power AC drive systems. As one of the key technologies of CHB multilevel inverters, the modulation methods have an important impact on …
1) The dc voltage utilization rate is doubled compared with traditional three-phase five-level NPC, ANPC, and FC inverter families, while the voltage stress on each switch is Vdc/2.
In the three-phase bridge inverter, the DC voltage utilization rate of the conventional SPWM control method is only 0.866, and the DC voltage utilization ratio of the relatively …
In the frequency conversion device, the DC voltage utilization rate is one of the important indicators to measure the advantages and disadvantages of the modulation method, …
This paper proposes a new hybrid nine-level inverter topology with high efficiency and high dc voltage utilization ratio, which provides a potential for renewable energy power …
It can not only improve the utilization of DC voltage, but also enlarge the power balance constraint range between the units in the …
Furthermore, there are many modulation strategies for inverters that can improve the DC voltage utilization of PV systems (Kabalcı, 2020). Trapezoidal modulation has been …
Several five-level inverters have limitations, such as low DC-bus voltage utilization and a large number of components. This paper describes a new five-level inverter with a …
Design and implementation of novel multilevel inverter with full DC-utilization: International Journal of Electronics: Vol 112, No 6 - Get Access
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