Three-phase and five-column electric reactor of new structure

Abstract

A three-phase and five-column electric reactor of a new structure comprises three iron core columns and three sets of coils installed on the three iron core columns respectively in a sleeved mode. The three-phase and five-column electric reactor of the new structure is characterized in that two side columns are arranged on the two sides of the three iron core columns, iron yokes are connected to the upper portions and the lower portions of the two side columns, the two side columns, the upper iron yoke and the lower iron yoke define an outer framework of the three iron core columns and the coils installed on the three iron core columns in the sleeved mode, the three iron core columns are made of soft magnetic materials or super silicon steel of the sheet thickness being below 0.15mm, and the two side columns, the upper iron yoke and the lower iron yoke are made of ordinary silicon steel sheets. Due to the adoption of the three-phase and five-column structure, the three-phase and five-column electric reactor is equivalent to three single-phase electric reactors in a magnetic circuit, the size is reduced, the cost is lowered, and the structural intensity is enhanced. Due to the characteristics and advantages, the three-phase and five-column electric reactor of the new structure can be applied to a three-phase and five-column electric reactor product.

Description

Technical field [0001] The invention relates to a three-phase five-column reactor, in particular to a three-phase five-column reactor adopting a soft magnetic material iron core column. Background technique [0002] With the rapid development of power electronics technology, the application fields of three-level converters are also expanding. Mainly used in DC uninterruptible power supply systems, aerospace power supply systems, electric vehicles, fuel cells, and many other applications. In recent years, power electronic devices have been developing in the direction of high frequency and high efficiency, and at the same time, the converter must also be developed toward high efficiency and high reliability, and at the same time, it must be downsized. Among them, the reactor is an important part of the converter. Therefore, how to improve the efficiency and temperature rise of the reactor in the high frequency environment without increasing the volume of the reactor, that is, the...

AI Technical Summary

Problems solved by technology

But at the same time, because of the three single-phase reactors, the cost is relatively high and the volume will be relatively large, so it has no advantage in the fierce market competition.

Although the traditional three-phase three-column reactor can solve the problem of small size and low cost, the circuit and magnetic circuit between the three phases interfere with each other.

Images