An improved 24‐pulse rectifier for harmonic mitigation in more electric aircraft

Abstract

To increase the power rating and reduce the cost and complexity of a multi-pulse rectifier (MPR), it is well known that the pulse number must be increased. In some practical cases, a 12-pulse rectifier (12PR) is suggested as a good solution considering its relatively simple structure and low weight. However, 12-pulse rectifiers cannot technically meet the standards of harmonic distortion requirements for some industrial applications, and therefore they must be used along with output filters. Two cost-effective 24-pulse rectifiers (24PRs) are suggested in the article, which consist of a polygon autotransformer 12PR and two pulse doubling circuits (PDCs) at dc link. The first PDC (PDC1) is based on an interphase transformer (IPT) with a step-up secondary winding, and the second one (PDC2) is based on an IPT with a step-down secondary winding. To show the advantages of the proposed combinations compared with other solutions, simulation results are used, and also a prototype is implemented to evaluate and verify the simulation results. The simulation and experimental test results show that the total harmonic distortion (%THD) of the input current for the 12PR with PDC1 is less than 3.67%, and the 12PR with PDC2 is less than 1.45%, which meets the IEEE 519 and DO-160G requirements. Also, it is shown that in comparison with other solutions, the proposed two configurations are cost-effective, power factor is near unity, rating is almost 29% of the load rating, and the efficiency is almost 97.5%, which makes them a practical solution for more electric aircraft.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

A new series‐connected 36‐pulse rectifier with hybrid DC‐reinjection method for high power output

“…The passive harmonic injection method uses entirely passive devices with no additional signal source and high immunity to interference. Two parallel cost-effective 24-pulse rectifiers are suggested in [16], which use two passive harmonic injection circuits at dc link. In [17,18], two series 24-pulse rectifiers with various passive voltage harmonic injection circuits are proposed.…”

A 40-Pulse Autotransformer Rectifier Based on New Pulse Multiplication Circuit for Aviation Application

“…Therefore, passive PMCs have been considered by many researchers. To tackle the problem, the passive PMCs have been proposed for upgrading 12 pulse rectifiers (12PRs) in [18][19][20][21][22][23]. In [18][19], the pulses have been increased from 12 to 24, and in [20][21][22][23], the researchers have increased the number of pulses in the 12PR to 36 pulses.…”

“…To tackle the problem, the passive PMCs have been proposed for upgrading 12 pulse rectifiers (12PRs) in [18][19][20][21][22][23]. In [18][19], the pulses have been increased from 12 to 24, and in [20][21][22][23], the researchers have increased the number of pulses in the 12PR to 36 pulses. Furthermore, this method has also been used to upgrade a 20PR to 40 pulses [24][25][26], and also to upgrade a 36PR to 72 pulses [27][28].…”

A low‐rating 40‐pulse AC–DC rectifier based on a new passive harmonic mitigation circuit

“…Therefore, passive HMCs have been suggested in many research studies. They have been proposed for upgrading 12 pulse rectifiers (12PRs) in [17][18][19][20][21][22]. In [17,18], the pulses have been increased from 6 to 18 and 12 to 24, respectively.…”

“…They have been proposed for upgrading 12 pulse rectifiers (12PRs) in [17][18][19][20][21][22]. In [17,18], the pulses have been increased from 6 to 18 and 12 to 24, respectively. In [19][20][21][22], the researchers have increased the number of pulses in the 12PR to 36 pulses.…”