Water cooling and high voltage frequency converter system

A high-voltage frequency converter and water-cooling technology, applied in control/regulation systems, instruments, non-electric variable control, etc., can solve the problems of reducing product reliability, increasing the difficulty and cost of on-site construction, and increasing the workload of daily maintenance. Maintenance workload, reduced maintenance workload, small footprint

Inactive Publication Date: 2016-09-28
SHENYANG YUANDA POWER ELECTRONICS TECH
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Problems solved by technology

[0004] Conventional water-cooled high-voltage inverters only use water-cooled power units, and phase-shifting transformers use air-cooled dry-type transformers or oil-immersed transformers, which reduces the reliability of the product, increases the difficulty and cost of on-site construction, and requires increased daily maintenance work quantity

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  • Water cooling and high voltage frequency converter system
  • Water cooling and high voltage frequency converter system
  • Water cooling and high voltage frequency converter system

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] Such as figure 1 As shown, the main circuit of the cascaded high-voltage inverter commonly used at present is mainly composed of a three-phase multi-secondary winding transformer 1 and several power units 2 .

[0046] Such as figure 2 As shown, it is a water-cooled high-voltage inverter system disclosed in Embodiment 1 of the present invention, including: a three-phase multi-secondary winding transformer 1, N power units 2, a control system 23 and a w...

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Abstract

The invention discloses a water cooling and high voltage frequency converter system which includes a three-phase multi-secondary side winding transformer, N power units, a control system and a water cooling system. The three-phase multi-secondary side winding transformer has a primary side which is connected to a voltage output end of a three-phase power grid. Each winding of each secondary side of the three-phase multi-secondary line winding transformer is connected to one power unit. The control system is in separate connection to the three-phase multi-secondary line winding transformer, N power units, and the water cooling system. The control system monitors operation conditions of the three-phase multi-secondary line winding transformer, and controls the water cooling system to conduct cooling on the three-phase multi-secondary line winding transformer on the basis of the operation conditions. The control system monitors operation conditions of N power units, and controls the water cooling system on the basis of the operation conditions to conduct cooling on the N power units. According to the invention, the system can meet special requirements of special industries such as nuclear power, at the same time reduces the difficulty of on-site construction, and reduces maintenance workload.

Description

technical field [0001] The invention relates to the technical field of high-voltage frequency converters, in particular to a water-cooled high-voltage frequency converter system. Background technique [0002] With the development of power electronics technology, frequency converter, as an important part of intelligent electronic control system, plays an increasingly important role in various fields of national economy, such as electric power, water conservancy, petrochemical, metallurgy and other industries. [0003] The rapid development of my country's industrialization has promoted the development of motor manufacturing and application in the direction of high voltage and high power. High-power cascaded high-voltage inverters are used to drive high-voltage and high-power motors, and are widely used in nuclear power, petrochemical, and metallurgical industries. High-power motors are often key components in the corresponding industries, and failures will cause the entire pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00G05D27/02
CPCH02M1/00G05D27/02
Inventor 常亚晖郑艳文周祖平
Owner SHENYANG YUANDA POWER ELECTRONICS TECH
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