Four element aperture coupled patch array, separately excited
Driven by a heavy-duty 2.8-horsepower separately excited
drive motor, the vehicle delivers quick acceleration and rapid lowering and lifting of its three-stage mast.
Mathematical models of a separately excited
Circuit diagrams (series-wound DC traction motor circuit diagram and separately excited
shunt-wound DC traction motor circuit diagram) as well as their speed-torque characteristics are presented in Figs 3-5.
Traditionally, separately excited
dc machines were the obvious choice for applications in adjustable speed drives, where independent torque and flux control is required.
The mid-duty fuel cell/ battery truck utilizes the same motor and axles as the eWorkman--an Advanced Motors and Drives (AMD) separately excited
dc motor through a Sevcon SEM controller drive the Dana axle and differential assembly.
For instance, separately excited
transistorized motors and motor controllers curb power usage.
The trucks are equipped with a separately excited
drive motor to enhance acceleration and top travel speed, as well as regenerative brakes to improve overall efficiency.
The separately excited
drive motor can be programmed to match torque and speed to each application.
* motors incorporating separately excited
motor (SEM) technology
According to TMHU, each new lift truck, as with the company's existing line of electric walkie stackers, is engineered with metal oxide semiconductor field effect transistor (MOSFET) controller system and separately excited
motor (SEM) drive technologies, "resulting in increased battery efficiency, stepless acceleration and improved operator control."