ELE 747 Lecture Notes - Lecture 9: Delta Modulation, Delta-Sigma Modulation, Simulink
9 Apr 2016
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Q: how to generate mav , mbv and mcv with adjustable amplitude and frequency: principle: 1v - to control mf (freq. of mv ) 2v - to control mv (peak of mv ) f m = 2: sine wave generator mav mbv mcv. 2k mf mav (ii) carrier wave: use repeating sequence block (rsb, delta modulation (current controller vsi, block diagram ai i . Reference current (phase a) ai ai - inverter output current (phase a) ai - error signal. Note: are not shown and bi ci: operating principle ai ai. Summary: using delta modulation, the inverter current ai will be kept between ubl and. Q: what if the bandwidth is reduced? ai ai ai t t ai more closely. If is a sine wave, ai is also a sine with some high order harmonics superimposed. High order harmonics can be filtered easily: no low order harmonics. )t i a i a dcv: load inductance, simulink model i ai.
