| Title |
A Pseudo-Random Carrier PWM Technique by Fixed Frequency Carrier Composition |
| Authors |
김종남(Kim, Jong-Nam) ; 정영국(Jung, Young-Gook) ; 임영철(Lim, Young-Cheol) ; 박성준(Park, Sung-.Jun) ; 김광헌(Kim, Kwang-Heon) |
| Keywords |
Pseudo-Random Frequency Carrier, Random PWM ; Cascade Multi-Level Inverter ; Power Spectra |
| Abstract |
This paper describes a pseudo-random carrier PW technique for the power converters. The proposed method generates a new pseudo-random carrier by randomly composing a carrier with fixed frequency and a carrier with opposition phase. To confirm the validity of the proposed method, a single-phase multi-level inverter was implemented and tested. The experimental results show that the output voltage and current harmonics spectra of an inverter have broadening effect of harmonics, as only simple composition of fixed frequency carries. |