Analysis of loss distribution of Conventional Boost, Z-source and Y-source Converters for wide power and voltage range

Abstract

Boost converters are needed in many applications which require the output voltage to be higher than the input voltage. Recently, boost type converters have been applied for industrial applications, and hence it has become an interesting topic of research. Many researchers proposed different impedance source converters with their unique advantages as having a high voltage gain in a small range of duty cycle ratio. However, the thermal behaviour of the semiconductor devices and passive elements in the impedance source converter is an important issue from a reliability point of view and it has not been investigated yet. Therefore, this paper presents a comparison between the conventional boost, the Z-source, and the Y-source converters based on a thermal evaluation of the semiconductors. In addition, the three topologies are also compared with respect to their efficiency. In this study the results show that the boost converter has higher efficiency than the Zsource and Y-source converter for these specific voltage gain of 2 and 4. The operational principle, mathematical derivations, simulation results and final comparisons are presented in this paper.

Loss distribution and thermal behaviour of the Y-source converter for a wide power and voltage range

“…Different power loadings are considered for the loss distribution investigation. These losses can be listed as switching, conduction, capacitor ESR, core and winding losses [6] [10].…”

Novel active clamped Y‐source network for improved voltage boosting

“…The loss estimation for the proposed active clamped YSC is mathematically expressed in this section with the knowledge of [27].…”

“…The core loss due to hysteresis for the selected ferrite core FT240-43 can be calculated using Steinmetz's equation, which is given in (27).…”

DC-link Current Harmonic Mitigation via Phase-shifting of Carrier Waves in Paralleled Inverter Systems

“…Also, the power loss of the capacitor, which is a function of the current harmonic spectrum and its Equivalent Series Resistance (ESR) increases as the capacitor current increases [8]. Several studies show that 30% of the total failure root causes in the power electronic systems are due to capacitors failures [9], and hence they are considered as the most fragile components in a power electronic system [9][10][11][12]. In order to extend the lifetime of the DC-link capacitor, two possible solutions are considered.…”