Electrical system of hybrid power rail car

Abstract

The invention discloses an electrical system of a hybrid power rail car. The electrical system comprises a main and auxiliary integrated converters of one weight or more than two weights. The main and auxiliary integrated converter comprises a rectification module, a first bridge arm, an intermediate DC link, a traction inversion module, an auxiliary inversion module connected to the intermediate DC link, and an isolation output module connected with the auxiliary inversion module which are connected in sequence. An engine is connected to a generator which is then connected to the rectification module. One end of the power battery is connected between the two serially connected switch tubes of the first bridge arm through the chopper reactor, and the other end of the power battery is in common ground connection with the intermediate DC link. And the traction motor is connected with the traction inversion module. The technical problems that an existing electrical system adopts uncontrollable rectification, the size of intermediate direct-current voltage cannot be adjusted, a contact network and an engine unit cannot supply power at the same time, and power is insufficient due to the fact that the system cannot adapt to power reduction operation of the engine in a contact network-free environment and a plateau environment can be solved.

Description

technical field [0001] The invention relates to the technical field of track engineering electrical technology, in particular to an "internal combustion + power battery" hybrid rail car electrical system. Background technique [0002] At present, my country's high-speed railway has been fully promoted, and a large number of long tunnels have been newly built. However, a large number of existing railway railcars are powered by internal combustion engines. During tunnel construction, the exhaust gas emitted by diesel engines is not easy to spread in a short time, which makes the work site visibility and The air quality is poor, which seriously affects the safety, health and work efficiency of construction personnel, and there are great potential safety hazards. The existing internal combustion rail car electrical system mainly has the following deficiencies: [0003] 1) The power system of the traditional internal combustion rail car adopts the hydraulic (hydraulic) transmissi...

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Problems solved by technology

[0010] In view of this, the object of the present invention is to provide a hybrid rail car electrical system to solve the problem that the existing electrical system adopts uncontrollable rectification, the intermediate DC voltage cannot be adjusted, the catenary and the engine group cannot supply power at the same time, and cannot adapt to non-contact The technical problem of insufficient power caused by the reduced power operation of the engine in the network environment and plateau environment

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