scholarly journals Multiple-Fault-Tolerant Strategy for Three-Phase Hybrid Active Neutral Point Clamped Converters Using Enhanced Space Vector Modulation Technique

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 180113-180123
Author(s):  
Laith M. Halabi ◽  
Ibrahim Mohd Alsofyani ◽  
Kyo-Beum Lee
Keyword(s):  
Fault Tolerant ◽  
Neutral Point ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Multiple Fault ◽  
Modulation Technique ◽  
Three Phase ◽  
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.

Sign in / Sign up

Export Citation Format

Share Document