Category: TRACTION DRIVES

Diesel Electric Traction System

Diesel Electric Traction System: Because of high initial cost, electric traction is justified only where there is sufficient volume of traffic. Diesel Electric Traction System is preferable where the traffic is limited. Boundary between these two alternatives depends on several factors such as initial cost, running cost, amount of traffic, maintenance etc. Diesel Electric Traction […]

CSI Squirrel Cage Induction Motor Drive

CSI Squirrel Cage Induction Motor Drive: Performance and operation of CSI induction motor drive is already explained . Figure 10.23 shows details of the traction drive of CSI Squirrel Cage Induction Motor Drive. In a multistage converter ac is converted into dc with sequence control to improve converter power factor and to reduce harmonics produced […]

PWM VSI Induction Motor Drive

PWM VSI Induction Motor Drive: PWM VSI Induction Motor Drive for traction is shown in Fig. 10.21. A pulsewidth modulated voltage source inverter converts dc into variable frequency and variable voltage ac, which is then fed to induction motors. Each motor coach of a suburban train may employ a single inverter feeding several squirrel-cage motors […]

Polyphase AC Motors for Traction Drives

Polyphase AC Motors for Traction Drives: Polyphase AC Motors for Traction Drives – Advantages of ac motors over dc we already know. Because of negligible maintenance, ruggedness and higher power per unit weight or volume, the squirrel-cage induction motor is ideally suitable for traction applications. Because of higher efficiency, and simpler and cheaper inverter, compared […]