Abstract
The purpose of this paper is to present the effects capabe of being obtained the electric braking technology through the miniaturized traction system using the 1C1M-mode.
For the present paper, a miniature traction system using a permanent-m...
Abstract
The purpose of this paper is to present the effects capabe of being obtained the electric braking technology through the miniaturized traction system using the 1C1M-mode.
For the present paper, a miniature traction system using a permanent-magnet synchronous motor (PMSM) was used to design and fabricate a device with inertia load. A motor was controlled using an individual 1C1M method in an ultra-low speed region to induce electric braking of an electric train to stoppage.
A resolver interface circuit was designed for control of a motor in an ultra-low speed region in the miniature traction system used for the experiment, and a speed observer was designed to estimate the position of the detected rotor for an accurate measurement of speed in an ultra-low speed range. An AC grid-connected converter was used to absorb regenerated power and maintain a constant voltage.
As a controller of a power converter, DSP microcontroller developed exclusively for control of a motor was used, and an integrated power converter was developed to control both a converter and an inverter with a single controller. Through repeated experiment on the miniature model, the present study was able to identify what benefits could be gained from the application of an electric braking technology.