B.Control System Strueture The general eontrol bloek diagramof the ProPosed hybridinverter baseddrive 15 shown in Fig.6.The overall eon-trolstrategy 15 eomPosed Of two maineontrol loOPs. The first eontrol IooP 15 the ...B.Control System Strueture The general eontrol bloek diagramof the ProPosed hybridinverter baseddrive 15 shown in Fig.6.The overall eon-trolstrategy 15 eomPosed Of two maineontrol loOPs. The first eontrol IooP 15 the motoreed eontrol based on oPeration oftheVSI.The motor展开更多
The general control block diagram ofthe proposed hybrid inverter based ac driveis shown in Fig. 6. The overall control strat-egy is composed of two main control loops.
A novel approach for improving the spectral performance of sinusoidal Pulse Width Modulation (SPWM) inverter is presented. By varying the carrier frequency according to chaotic time-sequence, the discrete spectrum of ...A novel approach for improving the spectral performance of sinusoidal Pulse Width Modulation (SPWM) inverter is presented. By varying the carrier frequency according to chaotic time-sequence, the discrete spectrum of the output voltage is transformed into the continuous spectrum, which could reduce the acoustic noise concentrated at specific tones in an inverter-driven electric machine. Fourier analysis shows that the harmonic at the fixed frequency has been restrained effectively and the distribution of the spectrum is in a wider range. Besides, a novel variable is introduced for the evaluation of the output voltage spectrum in SPWM inverter. Simulations and experiments with DSP confirm the advantages of the novel approach. Experimental results show the annoying acoustic noise has been translated into some enjoyable sound like a fall or water flowing when this novel method is applied.展开更多
文摘B.Control System Strueture The general eontrol bloek diagramof the ProPosed hybridinverter baseddrive 15 shown in Fig.6.The overall eon-trolstrategy 15 eomPosed Of two maineontrol loOPs. The first eontrol IooP 15 the motoreed eontrol based on oPeration oftheVSI.The motor
文摘The general control block diagram ofthe proposed hybrid inverter based ac driveis shown in Fig. 6. The overall control strat-egy is composed of two main control loops.
文摘A novel approach for improving the spectral performance of sinusoidal Pulse Width Modulation (SPWM) inverter is presented. By varying the carrier frequency according to chaotic time-sequence, the discrete spectrum of the output voltage is transformed into the continuous spectrum, which could reduce the acoustic noise concentrated at specific tones in an inverter-driven electric machine. Fourier analysis shows that the harmonic at the fixed frequency has been restrained effectively and the distribution of the spectrum is in a wider range. Besides, a novel variable is introduced for the evaluation of the output voltage spectrum in SPWM inverter. Simulations and experiments with DSP confirm the advantages of the novel approach. Experimental results show the annoying acoustic noise has been translated into some enjoyable sound like a fall or water flowing when this novel method is applied.
