scholarly journals Assessment of Efficiency and Reliability of Wide Band-Gap Based H8 Inverter in Electric Vehicle Applications

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1922 ◽  
Author(s):  
Luca Concari ◽  
Davide Barater ◽  
Andrea Toscani ◽  
Carlo Concari ◽  
Giovanni Franceschini ◽  
...  
Keyword(s):  
Ad Hoc ◽  
Wide Band ◽  
Wide Band Gap ◽  
Common Mode ◽  
Electric Motor Drives ◽  
Common Mode Voltage ◽  
Three Phase ◽  
Phase Converter ◽  
Vector Modulation ◽  
Efficiency And Reliability

This paper analyzes the performance of a three-phase converter architecture with a reduced common mode voltage to be used in electric motor drives. Starting from the classical three-phase bridge architecture, two additional switches are inserted in the DC link, in order to decouple the source from the load during the freewheeling intervals. Ad-hoc modulation strategies are introduced and evaluated against the classical three-phase space vector modulation. Three main parameters are analyzed: common mode voltage, efficiency and reliability. Experimental measurements on a converter prototype are used to evaluate the common mode performance. The efficiency in the case of Si-IGBT and SiC-MOSFETs is experimentally evaluated. Reliability analysis performed with a Coffin-Mason model showed that the higher efficiency offered by the SiC devices allows for a marked extension of the lifetime.

scholarly journals Space-vector modulation for three-phase indirect matrix converters to reduce common-mode voltage

2021 ◽  
Vol 4 (2) ◽  
pp. first
Author(s):  
Hoan Quoc Tran ◽  
Tien Manh Vu ◽  
Tuyen Dinh Nguyen
Keyword(s):  
Matrix Converter ◽  
Space Vector Modulation ◽  
Space Vector ◽  
Common Mode ◽  
Common Mode Voltage ◽  
Output Performance ◽  
Three Phase ◽  
The Common ◽  
Vector Modulation ◽  
Zero Voltage

This paper presents a space vector modulation strategy for a three-phase indirect matrix converter to reduce the common-mode voltage and maintain the output performance. To reduce the peak value of the common-mode voltage to 57.7% of the input phase voltage, three active voltage vectors are used to generate the desired output voltage with arbitrary amplitude and frequency, instead of using both active and zero voltage vectors as in the traditional space vector modulation strategy. Although the common-mode voltage is reduced, the output waveform quality of the three-phase indirect matrix converter deteriorates due to the absence of the zero voltage vectors. To overcome this problem, the proposed space vector modulation strategy is redesigned to control the rectifier stage of the indirect matrix converter by utilizing three active current vectors instead of two as usual. Consequently, the constant average dc-link voltage is achieved, which can improve the output performance in terms of the output voltage and current harmonic distortion. The simulation is implemented by PSIM software and experimental results are provided to verify the effectiveness of the proposed space vector modulation strategy.

scholarly journals An Improved T-type Switched-Capacitor Based 3-level 3-Phase Inverter with Common Mode Voltage Elimination and Voltage Boosting Capability

2021 ◽  
Author(s):  
Arpan Hota ◽  
sumon dhara ◽  
venu sonti ◽  
sachin jain ◽  
Vivek Agarwal
Keyword(s):  
Modulation Depth ◽  
Voltage Source ◽  
Switched Capacitor ◽  
Common Mode ◽  
Common Mode Voltage ◽  
Three Phase ◽  
Level 3 ◽  
Space Vectors ◽  
Vector Modulation ◽  
Type 3

<p>Zero common mode voltage (ZCMV) space vector modulation (SVM) strategy applied to a three-phase multilevel inverter (MLI) eliminates the common mode voltage (CMV). However, the usage of ZCMV-SVM strategy reduces the number of levels in the output voltage and requires higher magnitude dc voltage source due to the reduced modulation depth of the employed PWM scheme. Moreover, the usage of a single dc-source in such systems may have issues with respect to capacitor voltage balancing. Taking into account all the above issues, a 3-level inverter solution is proposed in this manuscript. The complete details of the method used for developing the proposed solution using the ZCMV space vectors is also included in this paper. The proposed topology utilizes a unique combination of a T-type 3-level inverter and a switched-capacitor (SC) circuit to achieve ZCMV performance with a single dc-source of low magnitude at a reduced component count. Analysis of the CMV and terminal voltages along with the design of the SCs are presented in this paper. The proposed topology is compared with the existing topologies to prove its unique merits over the other 3LI solutions with ZCMV capability. All the claims are validated using simulation and experimental results.</p>

scholarly journals An Improved T-type Switched-Capacitor Based 3-level 3-Phase Inverter with Common Mode Voltage Elimination and Voltage Boosting Capability

2021 ◽  
Author(s):  
Arpan Hota ◽  
sumon dhara ◽  
venu sonti ◽  
sachin jain ◽  
Vivek Agarwal
Keyword(s):  
Modulation Depth ◽  
Voltage Source ◽  
Switched Capacitor ◽  
Common Mode ◽  
Common Mode Voltage ◽  
Three Phase ◽  
Level 3 ◽  
Space Vectors ◽  
Vector Modulation ◽  
Type 3

<p>Zero common mode voltage (ZCMV) space vector modulation (SVM) strategy applied to a three-phase multilevel inverter (MLI) eliminates the common mode voltage (CMV). However, the usage of ZCMV-SVM strategy reduces the number of levels in the output voltage and requires higher magnitude dc voltage source due to the reduced modulation depth of the employed PWM scheme. Moreover, the usage of a single dc-source in such systems may have issues with respect to capacitor voltage balancing. Taking into account all the above issues, a 3-level inverter solution is proposed in this manuscript. The complete details of the method used for developing the proposed solution using the ZCMV space vectors is also included in this paper. The proposed topology utilizes a unique combination of a T-type 3-level inverter and a switched-capacitor (SC) circuit to achieve ZCMV performance with a single dc-source of low magnitude at a reduced component count. Analysis of the CMV and terminal voltages along with the design of the SCs are presented in this paper. The proposed topology is compared with the existing topologies to prove its unique merits over the other 3LI solutions with ZCMV capability. All the claims are validated using simulation and experimental results.</p>

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