A new space vector modulation strategy for three-switch three-phase delta inverter

2016 ◽  
Author(s):  
Hana Mahdhi ◽  
Asma Ben Rhouma ◽  
Mahmoud Hamouda
Keyword(s):  
Space Vector Modulation ◽  
Space Vector ◽  
Three Phase ◽  
New Space ◽  
Vector Modulation

scholarly journals A new space vector modulation technique for quasi Z-source B4 inverter

2020 ◽  
Vol 11 (4) ◽  
pp. 1890
Author(s):  
Izni Mustafar ◽  
Naziha A. Azli ◽  
Norjulia M. Nordin
Keyword(s):  
Output Voltage ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Modulation Technique ◽  
Front End ◽  
Voltage Ripple ◽  
Three Phase ◽  
New Space ◽  
Vector Modulation ◽  
Inverter Topology

A Quasi Z-Source (qZS) network has been utilized in a B4 inverter topology to provide voltage boosting effect by turning on the upper and lower switches simultaneously which is known as zero shoot-through states. However, the design of a qZS B4 inverter is not as straightforward as adding a qZS LC impedance network to the front-end of a B4 inverter. This is because there is no zero vectors available in a B4 inverter topology to insert the shoot through zero states, as in the case of a B6 inverter. This paper proposes a new Space Vector Modulation (SVM) technique for a qZS B4 inverter. Additional zero vectors have been appropriately added and distributed in the proposed SVM to avoid altering the existing volt-sec per switching cycle for the existing active vectors. The voltage vectors switching placement is carefully designed in order to enable the voltage boosting effect for this topology without altering the initial output voltage. In addition, an approach to compensate the DC-link voltage ripple has also been taken into consideration in its initial calculation to achieve balanced output voltage. The performance of the proposed modulation technique is verified using MATLAB/Simulink. It is shown that by using the proposed modulation technique, there is an overall improvement on the line to line output voltage where by it is able to produce balanced output voltages for the three-phase loads with or without boosting effect.

scholarly journals Modified Space Vector Modulation for Cascaded H-Bridge Multilevel Inverter with Open-Circuit Power Cells

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Hoang Truong ◽  
Chung Mai ◽  
Cao Nguyen ◽  
Phuong Vu
Keyword(s):  
Open Circuit ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Phase Line ◽  
Common Mode Voltage ◽  
Three Phase ◽  
New Space ◽  
Modulation Control ◽  
Vector Modulation ◽  
The Impact

In this research, a new space vector modulation control algorithm is proposed to increase the reliability of the cascaded H-bridge multilevel inverters in case of faulty situations, where one or several power cells do not function. Methods to detect faults ensure finding open-circuit module exactly, which is fast and easy to program. By giving a detailed analysis of the impact of the faulty power cells, optimal redundant level states are chosen such that highest possible output voltage can be achieved, while the balance of the three-phase line-to-line voltage is maintained and common-mode voltage is reduced. The proposed algorithm is generalized so that it can be applied to H-bridge inverters of any level. The validity of the method is verified by numerical simulations and experiment results with an 11-level cascaded H-bridge inverter.

Sign in / Sign up

Export Citation Format

Share Document