Handcart type middle-high-voltage solid soft starter

Abstract

The invention discloses a handcart type middle-high-voltage solid soft starter, belongs to the technical field of power electronics, and mainly aims to solve the problems of absence of unified standard configuration and inconvenience in internal device maintenance of a valve assembly of the existing starter. The handcart type middle-high-voltage solid soft starter is mainly characterized by comprising a PT trolley and three single-phase valve assemblies assembled on the PT trolley; the PT trolley comprises a PT trolley framework, a chassis trolley, an aviation socket, a connecting lever and a device room; each single-phase valve assembly comprises a valve assembly mounting frame, a thyristor and radiator assembly, optical fiber trigger driving plates, a resistance capacitance absorbing system, contact arms, contact arm sleeves and plum-flower-shaped contacts; and each valve assembly mounting frame is divided into a radiator room on the back part and an optical fiber trigger driving room and a resistance capacitance absorbing room on the front part. The handcart type middle-high-voltage solid soft starter has the characteristics of unified standard configuration of structures, high universality of accessories, suitability for batch production and convenience in internal device maintenance of the valve assemblies; and the handcart type middle-high-voltage solid soft starter is mainly used for the handcart type middle-high-voltage solid soft starter for starting a middle-high-voltage asynchronous motor.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a handcart-type medium-high voltage solid-state soft starter, which realizes voltage adjustment through a corresponding drive system and an auxiliary electric control thyristor to start a medium-high voltage asynchronous motor. Background technique [0002] At present, there are certain problems in the traditional medium and high voltage solid state soft starter: [0003] 1. At present, there is no unified assembly and technical standards for the structure of medium and high voltage solid state soft starters. The design and production of internal parts have their own characteristics, which makes it difficult to mass-produce, and the versatility of parts is poor; [0004] 2. If there is a problem with the valve components of the soft starter cabinet, before repairing, first cut off the high voltage power supply of the switch cabinet in front of the soft start...

AI Technical Summary

Problems solved by technology

[0003] 1. At present, there is no uniform assembly and technical standards for the structure of medium and high voltage solid state soft starters. The design and production of internal parts have their own characteristics, which is difficult to mass-produce, and the versatility of parts is poor;

[0004] 2. If there is a problem with the valve components of the soft starter cabinet, before repairing, first cut off the high-voltage power supply of the switch cabinet in front of the soft starter cabinet. If the switch cabinet has other loads, other loads will not be able to run;

[0005] 3. It is difficult to maintain the internal components of the valve assembly of the soft lift cabinet, especially the thyristor. Maintenance personnel need to drill into the cabinet to dismantle the valve assembly and control circuit before the valve assembly to be repaired can be lifted out of the cabinet for maintenance, which will cause users On-site power outage time is long and maintenance efficiency is low

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