Title :
Operation of a three phase cascaded H-bridge multilevel active rectifier under variable DC loads
Author :
Venkat, Jakka ; Shukla, Anshuman
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Bombay, Mumbai, India
Abstract :
Cascaded H-bridge (CHB) multilevel converters have found extensive high power applications due to their modular structure, simpler layout, and reduced number of components. The reported work proposes a vector control method for a three phase CHB active rectifier (CHBAR) to offer the desired voltages across its dc-link capacitors and the prerequisite power factor at the grid terminals under variable load conditions. A phase shifted pulse width modulation scheme is used to generate the gate signals for the rectifier. The required reference signals for the modulation scheme are obtained by using the vector control. The validity of the proposed control is verified using the theoretical and simulation analysis.
Keywords :
PWM power convertors; PWM rectifiers; bridge circuits; cascade networks; power factor; reactive power control; CHB multilevel converter; CHBAR; DC-link capacitor; gate signal; grid terminal; high power application; modular structure; phase shifted pulse width modulation scheme; prerequisite power factor; reactive power control; reference signal; three phase cascaded H-bridge multilevel active rectifier; variable DC load; variable load condition; vector control method; Capacitors; Load modeling; Pulse width modulation; Reactive power; Rectifiers; Voltage control; Cascaded H-bridge converter; phase shifted pulse width modulation; vector control;
Conference_Titel :
Power Electronics, Drives and Energy Systems (PEDES), 2014 IEEE International Conference on
Conference_Location :
Mumbai
Print_ISBN :
978-1-4799-6372-0
DOI :
10.1109/PEDES.2014.7042153
