Energy regeneration technique for electric vehicles driven by a brushless DC motor

Abstract

The development of energy regeneration capability in electric vehicles can extend their driving range making them a competent alternative for conventional internal combustion engine vehicles. In this study, a novel energy regeneration technique, called a two-boost method, for electric vehicles driven by a brushless DC (BLDC) motor, a widely used motor in vehicular technology, is proposed. Based on this technique, the BLDC motor driver, which is selected to be a three-phase inverter, is converted into two simultaneous boost converters during energy regeneration periods in order to transfer energy from the BLDC motor into the battery and provide the braking force. Also, this method is compared with the single-boost method. The simulation and experimental results show that the amount of regenerated energy in this method is more than twice of that in the single-boost method. Moreover, it is observed that in the two-boost method, the motor speed changes linearly without any control of the electrical torque. In addition, since the amount of regenerated energy in this method as compared to the single-boost method is higher, the energy regeneration efficiency in this method is increased significantly.

Adaptive Controller of Bidirectional DC-DC Converter Based on Extreme Learning Machine for Electric Vehicle

“…Research effort in [9], shows that DC motor could provide satisfied power performance when used as the electric vehicle motor. Bahrami et all shows the efficacy of DC motor for electric vehicle when operated in regenerative breaking operation as reported in [10]. However, the problem is motor DC is how to the control the speed of DC motor.…”

“…The parameter values to be substituted are R = 1.544 ohms, V⁄∆t = 1% and f = 10,000 Hz. By substituting equation (10) with Eq. ( 24) and other parameter values, then, 𝐶 𝑚𝑖𝑛 = 0.7 (1.544)(0.01)10,000 (25) 𝐶 𝑚𝑖𝑛 = 4.54 𝑥 10 −3 𝐹 (26)…”

Investigation of Regenerative Braking Performance of Brushless Direct Current Machine Drive System

“…In [21], a slip-rate control strategy based on sliding mode control and braking force control strategy based on the Economic Commission for Europe's (ECE) regulation are presented to improve the efficiency of recovered electrical energy. A novel two-boost method which is exploiting the motor converter as a cascade connected two-level boost converter is asserted for BLDC motor regenerative braking [22]. In [23], a downshifting strategy is described to improve recovery energy by adjusting operating regions of electric motor for electric and hybrid vehicles with stepped automatic transmissions.…”

An integrated permanent magnet brushless motor driver with commutation current ripple reduction

“…In recent years, due to the rising awareness of environmental protection, electric motorcycles have gradually become the development focus. Permanent magnet brushless motors are widely used because of their benefits in maintenance, high power density, and simple control methods [1,2,3,4,5,6]. The three-phase full-bridge inverter with six active switches is the most common topology of the motor driver.…”