Method for controlling power supply to current vertex decelerator

Abstract

A method controls the magnetide of brake moment in slow speed by changing the magnitude of current vortex. Combining connection modes of windings at the current vortex declerator in serial or parallel controls the magnitude of current at the current vortex decelerator. The invented control method can use minor current in low-end levels to get same shockless braking moment with less size of the decelerator and more control levels.

Description

Technical field

[0001] The invention relates to a power supply control method for an eddy current retarder, in particular to a power supply control method for controlling the size of the retarder braking torque by combining the connection mode of the working coil on the eddy current retarder. Background technique

[0002] The eddy current retarder uses the stator magnetic field to generate eddy currents in the rotor to achieve the effect of non-contact retarding braking. In order to achieve the torque control when retarding, two methods are currently used: one is the widely used grouping parallel connection The connection method is to divide the stator coils into several groups in parallel and energize them separately. As the number of energized coil groups increases, a retarding torque (braking torque) proportional to the number of energized coils is obtained. In this way, relays are often used to control the connection and disconnection of the coils. Take an eddy current retard...

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