Common Mode EMI Noise Suppression for Bridgeless PFC Converters

Modeling and development of a bridgeless PFC Boost rectifier

“…Figure 1 shows the bridgeless PFC boost converter topology. This topology is composed of two power switches Q 1 [17][18][19].…”

“…The operating point and the steady-state model is obtained by setting all the time derivatives given in (17) to zero, such as expressed by expressions (18) to (20). Note that, the matrix A must be invertible for appropriating solution of the equations:…”

“…Some AC-DC controlled converters with PFC reported by technical literature are: conventional boost rectifier composed of diodes bridge and boost converter [12][13][14], AC-DC interleaved boost converter [15,16], and bridgeless boost PFC converter [17][18][19].…”

“…The bridgeless PFC boost converter can supply up to 3.5 kW of power to the load and can reduce the ripple voltage in load and the ripple current in source. Moreover, inductors are located on the AC side facilitating its design and EMI filtering [17][18][19][20][21][22].…”

“…This work demonstrated experimentally that the bridgeless PFC boost converter is more efficient than conventional boost rectifiers. In [17,18], an improved bridgeless PFC boost topology is proposed to reduce common mode noise. A novel technique for measuring the source current and implementation of the bridgeless PFC boost converter prototype has been introduced in [23].…”