An efficient soft-switched vienna rectifier topology for EV battery chargers

Sliding mode based adaptive linear neuron proportional resonant control of Vienna rectifier for performance improvement of electric vehicle charging system

“…However, the size and cost of the system rise with the stringency of the specification. Assuming having equal C 1 = C 2 values of the DC-link capacitors are chosen based on the desired ripple magnitude of the DClink voltage, which is given as follows [51,52]:…”

“…where P rate represents the rated power of the VR, ∆ṽ o,dc is the percentage ripple of the DC-link voltage and f is the grid frequency. Line or filter inductance can be selected to provide continuous line current to reduce the ripple and lower the stress at the switching frequency, f sw [51,52].…”

Study of a novel soft‐switched Vienna rectifier using simple active technique

“…A Vienna rectifier based on the proposed active snubber circuit is a novel topic. Active and passive techniques employed in the Vienna rectifier topology exist in the literature 26,42,43 ; however, the simplicity and less control effort in addition to soft-switching conditions make the proposed method more attractive than the existing ones. For example, in most of the existing active snubber circuits such as Bodur and Yildirmaz, 44 these conditions are achieved through a rather complicated configuration of active snubber circuit.…”

“…In Jang et al, 47 an auxiliary transformer with a high magnetizing inductance value is required, and the auxiliary switch is partially hard‐switched under the magnetizing current. In addition, a comparison is made between the proposed method and other potential prior‐art soft‐switching methods such as NPDC converter reported in Li et al 36 and a transformer‐assisted snubber based vienna rectifier scheme reported in Ali et al, 42 taking circuit's components count and complexity into account.…”

“…The components count of the proposed and existing soft‐switching converter schemes employing active snubber circuits are compared and summarized in Table 3, when the three‐phase circuit arrangements are taken into account. Due to less number of auxiliary inductors, main and auxiliary power switches (half in count), the proposed soft‐switched and existing transformer‐assisted snubber based vienna rectifier scheme reported in Ali et al 42 are recommended for higher power density applications compared to the NPDC converter reported in Li et al 36 The less components count results in considerable reduction in weight, volume, and cost of the converters. The rectifier diodes and snubber capacitors are equal in number in proposed and existing topologies.…”