A single-phase full-controlled thyristor converter bridge is used for regenerative braking of a separately excited DC motor with the following specifications:
- Rated armature voltage = 210 V
- Rated armature current = 10 A
- Rated speed = 1200 rpm
- Armature resistance = 1 Ω
- Input to the converter bridge = 240 V at 50 Hz
Assume that the motor is running at 600 rpm and the armature terminals are suitably reversed for regenerative braking.
If the armature current of the motor is to be maintained at the rated value, the triggering angle of the converter bridge (in degrees) should be ____________ (rounded off to two decimal places).
Motor and converter parameters:
Parameter Value Rated armature voltage 210 V Rated armature current 10 A Rated speed 1200 rpm Armature resistance 1 Ω Input to converter bridge 240 V at 50 Hz
The armature of the DC motor is fed from the full-controlled bridge, and the field current is maintained constant.
A single-phase full-controlled thyristor converter bridge is used for regenerative braking of a separately excited DC motor with the following specifications:
- Rated armature voltage = 210 V
- Rated armature current = 10 A
- Rated speed = 1200 rpm
- Armature resistance = 1 Ω
- Input to the converter bridge = 240 V at 50 Hz
Assume that the motor is running at 600 rpm and the armature terminals are suitably reversed for regenerative braking.
If the armature current of the motor is to be maintained at the rated value, the triggering angle of the converter bridge (in degrees) should be ____________ (rounded off to two decimal places).
Motor and converter parameters:
| Parameter | Value |
|---|---|
| Rated armature voltage | 210 V |
| Rated armature current | 10 A |
| Rated speed | 1200 rpm |
| Armature resistance | 1 Ω |
| Input to converter bridge | 240 V at 50 Hz |
The armature of the DC motor is fed from the full-controlled bridge, and the field current is maintained constant.
Correct Answer: 113 - 116
Solution and Explanation
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