DCMotor Drives

Abstract

The DC motor‐based drive of electric vehicles (EVs) and hybrid electric vehicles (HEVs) consists of a DC motor and a related controller. The controller converts the energy from batteries to the DC motor and then the DC motor converts electrical energy into mechanical energy so as to achieve the desired torque and speed requested from the EVs and HEVs. The DC motor exhibits the advantages of larger starting torque, shorter response time, wider adjustable speed range, better speed regulation ability, and more convenient control on speed and torque separately and have been successfully employed in some EV drive systems. It should be emphasized that these above‐mentionedadvantages are particularly important for electric propulsion in EVs and HEVs applications. This chapter comprehensively discusses the topology, operating principle, and mechanical performance of DC motor‐based drive systems. The principle and characteristic of three key control methods, namely, combined armature voltage and field control, chopper control, and multi‐quadrant control of chopper‐fed DC motor drives, are analyzed, elaborated, and evaluated.

Torque control of a 5 KW, 220 V separately excited DC motor using microcomputer

“…Compared to conventional mechanical brakes, eddy current braking has many advantages. Due to the lack of physical contact between components, eddy current brakes require very little maintenance and are suited for a wide range of machinery [20]. It is incorporated to provide smooth loading of the DC motor.…”

“…Figure14shows the thyristor zed power circuit of the single-phase half-controlled bridge converter fed separately excited DC motor[20]. It consists of two diodes D1, and D2, and silicon-controlled rectifiers SCR1, and SCR2.…”

Modeling and Simulation of Brushless DC Motor Speed Control System Based on SPWM

“…Output current controller is transformed to the appropriate PWM signal applied to the motor power converter module. By controlling the power transistor on-off sequence and time, changing the motor stator winding current and the winding switch order, so as to realize the control of the brushless DC motor speed and output torque [3][4][5].…”