Present practice in the design of asynchronous drive system is primarily directed towards modifications in the control circuit of the converter unit to achieve reduced ripples in the power supply waveform, so that the ill-effects of time-harmonics on the operation of the induction motors can be obviated.
Reduced rippling can be obtained by choosing a differential delay element δ so that the imaging channels would come even closer together, in terms of OPD, providing a relatively flat top sensitivity curve when combined, as suggested by the profile in Fig. 4(b).
Each detail is squared, then the average of each five samples is calculated to reduce ripples in the record.
A novel switched-loop filter, which can significantly reduce ripples on voltage controlled oscillator (VCO) control line, is proposed for phase-locked loops (PLL) with an automatic frequency calibration technique.
Excellent dynamic performance, reduced torque ripple and current oscillation can be achieved when the coefficients of PI controller are optimized by using SBFA.
Because of its simple system configuration, low EMI at input ac mains and reduced voltage rippled dc side, multi-pulse rectifier (MPR) is widely used in adjustable speed drives, electro-chemical processes, aircraft converter systems and renewable energy conversion systems [1, 2, 3, 4, 5, 6].
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To reduce torque ripple, the motor/controller set is viewed as a "black box".
In this paper, we proposed a simple method to reduce the ripple by current shaping.
