Title :
A 3-D generalized direct PWM algorithm for multilevel converters
Author :
Dai, Ning-Yi ; Wong, Man-chung ; Chen, Yuan-Hua ; Han, Ying-Duo
Author_Institution :
Fac. of Sci. & Technol., Univ. of Macau, China
Abstract :
A three-dimensional (3-D) generalized direct pulse width modulation (PWM) algorithm is proposed for multilevel converters in a three-phase, four-wire system. It is proved to be equivalent to the newly proposed generalized 3-D space vector modulation (SVM). However, the direct PWM greatly simplifies the calculation process and is much easier to implement in digital controllers. The direct PWM can be used in all applications needing a 3-D control vector, such as active filters, uninterruptible power supplies, etc. Simulation and experimental results are given to show the validity of the proposed control strategy.
Keywords :
PWM power convertors; digital control; 3-D control vector; 3-D space vector modulation; PWM algorithm; active filter; digital controller; multilevel converter; three-dimensional direct pulse width modulation; three-phase four-wire system; uninterruptible power supply; Costs; Electromagnetic interference; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Space technology; Space vector pulse width modulation; Stress; Support vector machines; Voltage control; 3-D direct PWM; multilevel converters; three-phase four-wire system;
Journal_Title :
Power Electronics Letters, IEEE
DOI :
10.1109/LPEL.2005.855112
