Fast and detailed calculations of harmonics, generated by three-phase uncontrolled rectifiers with finite de smoothing, can be performed by using detailed analytical procedures (DAPs). Several DAPs are developed for continuous- and discontinuous-conduction modes (CCM and DCM) when balanced operation of the system is assumed. The authors of this paper have recently proposed a new DAP (model la) in which nonideal conditions, such as unbalances and even harmonic voltages on the ac side, are taken into account. However, only CCM is assumed in model la. The main objective of this paper is to overcome this limitation of model la so that a new DAP (model lb) for DCM is presented, which is capable of considering unbalanced operation. Moreover, the boundary of the DCM is also estimated for model lb under nonideal conditions.
Fast and detailed calculations of harmonics, generated by three-phase uncontrolled rectifiers with finite de smoothing, can be performed by using detailed analytical procedures (DAPs). Several DAPs are developed for continuous- and discontinuous-conduction modes (CCM and DCM) when balanced operation of the system is assumed. The authors of this paper have recently proposed a new DAP (model la) in which nonideal conditions, such as unbalances and even harmonic voltages on the ac side, are taken into account. However, only CCM is assumed in model la. The main objective of this paper is to overcome this limitation of model la so that a new DAP (model lb) for DCM is presented, which is capable of considering unbalanced operation. Moreover, the boundary of the DCM is also estimated for model lb under nonideal conditions. Read More
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