A Study on Input Power Factor Compensation Capability of Matrix Converters

Abstract

In practice, the input filter is an important component in matrix converter (MC) systems for removing high harmonic components from input currents. Due to the input filter, the input power factor (IPF) at the main power supply does not always achieve unity. To investigate the behavior of the IPF, this paper analyzes the IPF compensation capacity of MCs with an LC input filter based on space vector theory and the conservation of energy law. The study shows that the range of voltage transfer ratio (VTR) to achieve unity IPF depends strongly on the quality factor, which is determined by the system parameters. If the quality factor is greater than 0.375, the MC can never achieve unity IPF for the whole range of VTR. If the quality factor is lower than 0.375, the MC can only achieve unity IPF for a certain range of VTR, except at a very low or very high VTR. Experimental results are provided to confirm the correctness of the study.

Emerging Technologies in Power Systems

“…This proposed method can be applied for the power converters in home appliances. The paper in [3], entitled "A Study on Input Power Factor Compensation Capability of Matrix Converters", also introduced the input power factor compensation capacity of the matrix converters with an inductor and capacitor filter in the input side. This paper has been demonstrated with the combination of space-vector control method and conservation energy law.…”

Conventional and Second Order Sliding Mode Control of Permanent Magnet Synchronous Motor Fed by Direct Matrix Converter: Comparative Study

“…Considering that the voltage sources must not be in short circuit and the current sources must not be in open circuit, amongst the 27 possible configurations for DMC, just 21 possible switching states indicated by 18 vectors stationary (±1, ±2, ±3, ±4, ±5, ±6, ±7, ±8, ±9) and 3 null vectors (0 a , 0 b , 0 c ), are exploited by the SVM switching algorithm to generate the preferred output voltage vector v o and the input current vector i i for the DMC (See Table 1) [1,2,7]. The projection of the stationary vectors for the output voltage and input current in the plane (α, β) enables the shaping of two regular hexagons of six sectors each, so that the sector is bounded by two consequential vectors (Figure 3).…”

“…In context, the passive filter with a damping resistor connected in parallel with the inductor illustrated by Figure 4 has been strongly recommended for this type of converter [7,8].…”

“…To improve the input current waveform, to therefore reduce the harmonic distortion rate, the DMC must be connected to the grid via a passive filter. There are various topologies that have been proposed in research works [1,2,[7][8][9][10]; however, the passive filter with a damping resistor connected in parallel with the inductor has been strongly recommended for DMC [7,8]. Due to it is many previously mentioned advantages, it is estimated that the DMC will become the most popular candidate in the variable speed field, especially in drive and generation systems.…”

High performance of variable-pitch wind system based on a direct matrix converter-fed DFIG using third order sliding mode control

“…Actually, the extensive development in the field of microelectronics and information technologies has allowed the appearance of new topologies of power converters more suitable for the supply of DFIG such as matrix converters instead of traditional indirect AC/DC/AC converters (Nguyen et al, 2020). Therefore, the DMC allows bi-directional power conversion between the DFIG and the grid without a DC link (Aydogmus et al, 2022; Dendouga and Dendouga, 2022).…”