Series excitation direct-current motor controller with regenerative braking function

Abstract

The invention discloses a series excitation direct-current motor controller with a regenerative braking function, which comprises a storage battery, a main switch, an armature, an exciter and a power switch which are connected in series, and also comprises a changeover switch and a third fly-wheel diode, wherein the changeover switch enables the armature and the exciter to be connected in parallel or in series; the third fly-wheel diode is connected with the armature and both ends of the series branch of the exciter in parallel when the armature and the exciter are connected in series, and connected with both ends of the exciter in parallel when the armature and the exciter are connected in parallel; both ends of the main switch are connected with the first fly-wheel diode in parallel; and the negative pole of the first fly-wheel diode is connected with the positive pole of the storage battery. The invention can be used for realizing regenerative braking of the series excitation direct-current motor, has the advantages of simple hardware structure and low cost, can effectively reclaim the kinetic energy produced when the vehicle brakes or runs downhill and recharge the storage battery so as to improve the energy utilization ratio, can effectively lower the risk of wheel lockup, and has important meanings for improving the vehicle stability and controllability during braking.

Description

Technical field [0001] The invention involves the speed control technology of the motor, which especially involves a chop controller with a recycled braking function for stringing DC motors for electric vehicles. Background technique [0002] In recent years, with the increasingly serious energy crisis and environmental issues, problems such as unsustainable fuel and high pollution of traditional internal combustion engines have attracted more and more attention.In particular, the outbreak of the petroleum crisis and the financial crisis has been severely damaged by the traditional automobile industry. The development of electric vehicles has become a common strategic choice for major car manufacturers in the world.In this regard, my country has spared no effort to support the electric vehicle industry, and has established the "three vertical and three horizontal" R & D layouts of electric vehicles. [0003] During the driving process, electric vehicles often brake and go downhil...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the armature cannot provide continuous counter electromotive force due to the fact that the excitation cannot continue to flow during braking, and to provide a The improved boost circuit that can be applied to series-excited DC motors expands the regenerative braking technology to the category of series-excited DC motors, and obtains a series-excited DC motor controller with regenerative braking function to make full use of energy

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