Plugging Braking of Two-PMSM Drive in Subway Applications with Fault-Tolerant Operation

Abstract

The Permanent Magnet Synchronous Motor (PMSM) is commonly used as traction motors in the electric traction applications such as in subway train. The subway train is better transport vehicle due to its advantages of security, economic, health and friendly with nature. Braking is defined as removal of the kinetic energy stored in moving parts of machine. The plugging braking is the best braking offered and has the shortest time to stop. The subway train is a heavy machine and has a very high moment of inertia requiring a high braking torque to stop. The plugging braking is an effective method to provide a fast stop to the train. In this paper plugging braking system of the PMSM used in the subway train in normal and fault-tolerant operation is made. The model of the PMSM, three-phase Voltage Source Inverter (VSI) controlled using Space Vector Pulse Width Modulation technique (SVPWM), Field Oriented Control method (FOC) for independent control of two identical PMSMs and fault-tolerant operation is presented. Simulink model of the plugging braking system of PMSM in normal and fault tolerant operation is proposed using Matlab/Simulink software. Simulation results for different cases are given.

Driver intention based coordinate control of regenerative and plugging braking for electric vehicles with in‐wheel PMSMs

“…In this case, the relationship between the brake pedal displacement and vehicle deceleration is designed as linear. According to [17], the braking deceleration should be less than , the relationship between the brake pedal displacement and vehicle deceleration is designed as As shown in (47), the desired braking deceleration is when the is . It is able to meet the requirement of linear relationship and will not make the passengers feel uncomfortable.…”

“…An off‐line calculation and on‐line look‐up table method is adopted to obtain the optimal downshift point to get the best energy efficiency of electric vehicles during the regenerative braking. It cooperatives control of regenerative braking and hydraulic braking to ensure brake safety during downshift process [17]. In [18], an hybrid electric vehicle (HEV) equipped with an automated manual transmission is chosen as the study platform.…”