CN203277063U - Auxiliary winding placement structure for dry-type rectifier transformer for variable frequency speed regulation - Google Patents

Abstract

The utility model relates to an auxiliary winding placement structure for a dry-type rectifier transformer for variable frequency speed regulation. The structure comprises a low iron yoke cushion block, a primary winding and a secondary winding, and further comprises an auxiliary winding, wherein a groove for installation of the auxiliary winding is formed in the lower iron yoke cushion block, a longitudinal insulation layer is arranged between the primary winding and the secondary winding, transverse insulation layers are arranged between the primary winding and the auxiliary winding and between the secondary winding and the auxiliary winding, and the transverse insulation layers and the longitudinal insulation layer are vertically distributed. According to the auxiliary winding placement structure for the dry-type rectifier transformer for the variable frequency speed regulation, the auxiliary winding is placed in the lower iron cushion block with the groove in a reinforced insulation mode, therefore the height of an iron core and the height of a coil can be effectively reduced, manufacturing cost of the transformer is saved, and meanwhile requirements of customers are completely met.

Description

A placement structure for auxiliary windings of dry-type rectifier transformers for frequency conversion and speed regulation

technical field

The utility model relates to a transformer auxiliary winding placement structure, in particular to a special lower iron yoke cushion block for slotting the auxiliary winding after reinforced insulation, which can effectively reduce the height of the iron core and the coil, and save the manufacturing cost of the transformer. The placement structure of the auxiliary winding of the dry-type rectifier transformer for frequency conversion and speed regulation.

Background technique

With the rapid development of modern power electronics technology and microelectronics technology, frequency conversion speed control devices are becoming more and more mature, and their application fields and scope are becoming more and more extensive, which makes efficient and reasonable use of energy, especially electric energy. possible. Frequency conversion speed regulation has also been listed as one of the 10 resource-saving and comprehensive utilization technological transformation demonstrations implemented by key national organizations. It is a device that transforms the power frequency power supply (50Hz or 60Hz) into AC power supply of various frequencies to realize the variable speed operation of the motor. The rectifier circuit transforms the alternating current into direct current, and the direct current intermediate current smoothes and filters the output of the rectifier circuit, and the inverter circuit inverts the direct current into alternating current with controllable frequency and voltage. The dry-type rectifier transformer for frequency conversion speed regulation is an indispensable and important component as the isolated power supply in the frequency conversion speed regulation device.

The secondary side of the dry-type rectifier transformer for frequency conversion and speed regulation is required to place an auxiliary winding with a 380V output of about 10KVA for the power supply of the bottom fan and the control circuit power supply. According to customer requirements, the auxiliary winding requires high insulation and withstand voltage for both the primary winding and the secondary winding, and is usually placed axially with the secondary winding. Due to the increase in the height of the transformer core and coil, the manufacturing cost has increased significantly.

Utility model content

In view of the above-mentioned problems, the main purpose of this utility model is to provide a frequency conversion inverter that places the auxiliary winding in a slotted special lower iron yoke block after reinforced insulation, effectively reduces the height of the iron core and coil, and saves the manufacturing cost of the transformer. The placement structure of the auxiliary winding of the dry-type rectifier transformer for speed regulation.

The utility model solves the above-mentioned technical problems through the following technical solutions: a placement structure for the auxiliary winding of a dry-type rectifier transformer for frequency conversion and speed regulation, the structure includes a lower iron yoke pad, a primary winding and a secondary winding. The structure also includes auxiliary windings. There is a slot for installing auxiliary windings on the lower iron yoke pad. A longitudinal insulation layer is provided between the primary winding and the secondary winding. A horizontal insulation layer is provided between the primary winding, secondary winding and the auxiliary winding. layer, horizontal insulating layer and vertical insulating layer are distributed vertically.

In a specific implementation example of the present utility model: the output of the auxiliary winding is 380V.

The positive and progressive effect of the utility model is that the placement structure of the auxiliary winding of the dry-type rectifier transformer for frequency conversion and speed regulation provided by the utility model has the following advantages:

The auxiliary winding placement structure of the dry-type rectifier transformer for frequency conversion and speed regulation provided by the utility model places the reinforced insulation of the auxiliary winding in the slotted special lower iron yoke pad, which can effectively reduce the height of the iron core and the coil, and save the transformer. Manufacturing cost, but also fully meet the needs of customers.

Description of drawings

Fig. 1 is a structural schematic diagram of the placement structure of the auxiliary winding of the dry-type rectifier transformer for frequency conversion and speed regulation provided by the utility model.

Detailed ways

The preferred embodiments of the utility model are given below in conjunction with the accompanying drawings to describe the technical solution of the utility model in detail.

Fig. 1 is a structural schematic diagram of the placement structure of the auxiliary winding of the dry-type rectifier transformer for frequency conversion and speed regulation provided by the utility model. As shown in Figure 1: the auxiliary winding placement structure of the dry-type rectifier transformer for frequency conversion and speed regulation provided by the utility model includes the lower iron yoke pad 1, the primary winding 3 and the secondary winding 4, and the structure also includes the auxiliary winding 2, the lower There is a slot for installing the auxiliary winding 2 on the iron yoke pad 1, a longitudinal insulating layer 5 is arranged between the primary winding 3 and the secondary winding 4, and a horizontal insulating layer 5 is arranged between the primary winding 3, the secondary winding 4 and the auxiliary winding 2. The insulating layer 6, the horizontal insulating layer 6 and the vertical insulating layer 5 are distributed vertically.

The output of auxiliary winding 2 is 380V.

The auxiliary winding placement structure of the dry-type rectifier transformer for frequency conversion and speed regulation provided by the utility model places the reinforced insulation of the auxiliary winding in the slotted special lower iron yoke pad, which can effectively reduce the height of the iron core and the coil, and save the transformer. Manufacturing cost, but also fully meet the needs of customers.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model, and the claimed protection scope of the utility model is defined by the appended claims and their equivalents.

Claims (2)

1. A dry-type rectifier transformer auxiliary winding placement structure for variable frequency speed regulation, the structure includes a lower iron yoke pad, a primary winding and a secondary winding, it is characterized in that: the structure also includes an auxiliary winding, a lower iron yoke pad There is a slot for installing the auxiliary winding on the block, a longitudinal insulating layer is arranged between the primary winding and the secondary winding, and a horizontal insulating layer is arranged between the primary winding, the secondary winding and the auxiliary winding, and the horizontal insulating layer and the longitudinal insulating layer are perpendicular to each other. distributed. 2. The placement structure of the auxiliary winding of the dry-type rectifier transformer for frequency conversion and speed regulation according to claim 1, wherein the output of the auxiliary winding is 380V.

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