Title :
Shaping the Spectra of the Acoustic Noise Emitted by Three-Phase Inverter Drives based on the New Hybrid Random PWM Technique
Author :
Ki-Seon Kim ; Young-Gook Jung ; Young-Cheol Lim
Author_Institution :
Dept. of Electr. Eng., Chonnam Nat. Univ., Kwangju
Abstract :
This paper proposes a new hybrid random PWM (HRPWM) technique using a LF2407 DSP board in order to spread the power spectra of an induction motor. The proposed method is composed to the PRBS (pseudo-random binary sequence) with the lead-lag random bit and the random triangular carrier for the logical comparison. For verification of the proposed method, the experiments were conducted with a three-phase adjustable speed a.c drives, and the results of simulations and experiments are presented
Keywords :
PWM invertors; acoustic noise; binary sequences; digital signal processing chips; induction motor drives; random sequences; variable speed drives; LF2407 DSP board; acoustic noise; hybrid random PWM technique; induction motor; lead-lag random; power spectra; pseudo-random binary sequence; random triangular carrier; three-phase adjustable speed a.c drives; three-phase inverter drives; Acoustic noise; Digital signal processing; Frequency; Induction motors; Pulse generation; Pulse width modulation; Pulse width modulation inverters; Random number generation; Signal generators; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE
Conference_Location :
Jeju
Print_ISBN :
0-7803-9716-9
DOI :
10.1109/PESC.2006.1711823
