DC Generator Characteristics
As shown by equation 1, the terminal voltage of the separately excited DC generator would be expected to … Read More
DC Machines
DC Generator Operation
When operated as a generator, the armature of the DC machine is driven by a prime mover. As … Read More
Voltage Source Inverters (VSI) Operation | VSI Working Principle
The voltage source inverter is a somewhat older design and less expensive to implement. Various implementations of the … Read More
Variable-Frequency Drive Working Principle | Variable-Speed Induction Motor Drive
The induction motor is basically a constant-speed motor, as it operates within 3% of the synchronous speed, which … Read More
Pulse Width Modulated Inverter | PWM Inverter
The Pulse Width Modulated (PWM) inverter offers the ability to change both the magnitude of the voltage and the … Read More
Current Source Inverter Operation
Both the VVI and PWM are voltage-source inverters; i.e., they provide a voltage to the motor similar to … Read More
Brushless DC Motor Working
A DC machine actually has an AC current in the armature that is rectified by the commutator and … Read More
DC Machine Construction and Operation
Figure 1 shows elementary permanent- magnet machine. It is very similar to the AC machine; however, instead of … Read More
