Natural capacitor voltage balancing for a flying capacitor converter induction motor drive

2008 ◽  
Author(s):  
Brendan Peter McGrath ◽  
Donald Grahame Holmes
Keyword(s):  
Induction Motor ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Voltage Balancing ◽  
Capacitor Voltage

scholarly journals A Hybrid Self-Voltage Balanced Multilevel Inverter Topologies for Induction Motors

2021 ◽  
Vol 7 (4) ◽  
pp. 1-8
Author(s):  
Sanjeev Kumar ◽  
◽  
H.K. Verma ◽  
M.P.S. Chawla ◽  
◽  
...  
Keyword(s):  
Single Phase ◽  
Pulse Width Modulation ◽  
Operating Mode ◽  
Multilevel Inverter ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Voltage Balancing ◽  
Three Phase ◽  
Capacitor Voltage ◽  
Sinusoidal Pulse Width Modulation

A hybrid structured asymmetric switching capacitor multilevel inverter (ASC-MLI) is suggested in this work. The notion behind presenting this topology is to reduce the device count and DC sources as compared with conventional MLI. The step by step operating mode of single phase ASC-MLI is presented and by doing slight modifications the same configuration is used in three phase utility application and electric drive. The proposed configurations utilize major benefits of self-voltage balancing capability of capacitor voltage, which is independent from different load type and modulations index. To generate the switching pulse for corresponding switches the multi-carrier based sinusoidal pulse width modulation (MCS-PWM) technique is used; in addition to this simulation result are obtained using MATLAB/Simulink 2016b software version. Simulation results of an induction motor drive connected as three phase load highlights good performance of 17-level MLI.

scholarly journals An IFOC-DSVPWM Based DC-Link Voltage Compensation of Z-Source Inverter Fed Induction Motor Drive for EVs

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Ananda Kumar Akkarapaka ◽  
Dheerendra Singh
Keyword(s):  
Induction Motor ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Voltage Compensation ◽  
Capacitor Voltage ◽  
Double Space ◽  
Inefficient Operation ◽  
Boost Control

The drop in DC-link voltage of adjustable speed drives (ASD) occurs mainly due to the increase in output power demands. This may lead to inefficient operation and eventually the tripping of the drive. This paper presents a Double Space Vector Pulse Width Modulation (DSVPWM) technique for boosting and compensating the DC-link voltage of Z-source inverter (ZSI). The DSVPWM technique estimates the required shoot through period of the Z-source inverter to maintain the DC-link voltage constant at the desired level through capacitor voltage control. The DSVPWM can obtain maximum boost at any given modulation index in comparison to simple boost control (SBC) method. It also utilizes the dead time more effectively. The speed control of the ZSI fed induction motor drive is done by employing indirect field-oriented (IFO) control method. A 32-bit DSP (TMS320F28335) is used to implement the IFOC-DSVPWM method for ZSI. The power structure and the modulation technique are well suited for electric vehicle application.

Sign in / Sign up

Export Citation Format

Share Document