Product Overview

Dry-type multi-winding frequency conversion transformers are specialized devices designed to provide multi-phase rectified power for medium and high-voltage frequency converters. Using the principle of phase-shifting with extended delta connections, these transformers can form rectifier configurations with equivalent phase numbers such as 9-phase, 12-phase, 15-phase, 18-phase, 24-phase, and 27-phase through multiple secondary windings with different phase-shifting angles. The primary side of the transformer connects to the high-voltage power grid, while the secondary side consists of multiple phase-shifted three-phase windings, enabling diversified inputs and contributing to the current diversification of high-voltage variable frequency speed regulation technology.

Application fields
Thermal power generation, metallurgical industry, petrochemical industry, cement manufacturing, water supply, sewage treatment, mining industry, papermaking, pharmaceuticals, transmission machinery, wind turbines, wind tunnel tests, etc.

Feature

• Diversified inputs and diversified technical presentations：Dry-type multi-winding frequency conversion transformers are devices specifically designed to provide multi-phase rectified power for medium and high-voltage frequency converters. Using the extended delta phase-shifting principle, they can form rectifier transformers with equivalent phases such as 9-phase, 12-phase, 15-phase, 18-phase, 24-phase and 27-phase through multiple secondary windings with different phase-shifting angles. The primary side of the transformer is connected to the high-voltage power grid, and its secondary side has multiple phase-shifted three-phase windings, which realizes diversified inputs and makes the high-voltage variable frequency speed regulation technology present a diversified situation at present.

• Lower cost, convenient installation and maintenance:In recent years, with the rapid development of power electronics technology, computer technology, and automatic control technology, AC drive and control technology has become one of the rapidly developing technologies. Frequency conversion speed regulation is widely recognized at home and abroad as a promising speed regulation method due to its excellent speed regulation and start-stop performance, high efficiency, high power factor, energy-saving effect, wide application range, and many other advantages. As an important part of frequency converters, multi-winding transformers have thus been widely used in thermal power generation, metallurgical industry, petrochemical industry, cement manufacturing, water supply, sewage treatment, mining industry, papermaking, pharmaceuticals, transmission machinery, wind turbines, wind tunnel tests, etc. Dry-type transformers are small in size and suitable for "fireproof and explosion-proof" occasions.

Basic parameters

Note: The above are general parameters, if there are different parameter requirements, they can be customized!