Title :
A new single-phase five-level PWM inverter employing a deadbeat control scheme
Author :
Park, Sung-Jun ; Kang, Feel-Soon ; Lee, Man Hyung ; Kim, Cheul-U
Author_Institution :
Dept. of Electr. & Electron., Tong-Myong Coll., Pusan, South Korea
fDate :
5/1/2003 12:00:00 AM
Abstract :
A single-phase five-level PWM inverter is presented to alleviate harmonic components of the output voltage and the load current. Operational principles with switching functions are analyzed. To keep the output voltage sinusoidal and to have the high dynamic performances even in the cases of load variations and the partial magnetization in filter inductor, the deadbeat controller is designed and implemented on a prototype. The validity of the proposed inverter is verified through simulation and experiments. To assess the proposed inverter, it is compared with the conventional single-phase three-level PWM inverter under the conditions of identical supply DC voltage and switching frequency. In addition, it is compared with the five-level cascaded PWM inverter.
Keywords :
DC-AC power convertors; PWM invertors; control system synthesis; harmonic distortion; harmonics suppression; power conversion harmonics; power supply quality; switching convertors; voltage control; deadbeat control scheme; dynamic performances; filter inductor partial magnetization; harmonic components alleviation; load current harmonics; load variations; operational principles; output voltage harmonics; single-phase five-level PWM inverter; supply DC voltage; switching frequency; switching functions; Inductors; Load management; Magnetic analysis; Magnetic separation; Magnetization; Power harmonic filters; Prototypes; Pulse width modulation inverters; Switching frequency; Voltage control;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2003.810837