Contents
What happens when you turn off an inductive load?
When you turn off the power, the current quickly drops to zero and no damage is done. Inductive loads are another matter. If you’re using a DC power supply to power DC motors, solenoids, fans, relays and other inductive loads, you need some kind of circuit protection.
Can an inductive load damage a DC power supply?
If you’re using a DC power supply to power DC motors, solenoids, fans, relays and other inductive loads, you need some kind of circuit protection. Without this protection, your power supply can be damaged by high voltage spikes from these devices. Figure 1 shows an inductive load connected to a DC power supply.
How does an induction motor work in a transformer?
When the induction motor starts the rotor winding is stationary and maximum voltage is induced in the rotor which will produce maximum rotor current. At starting the rotor is stationary and acts in a similar to a transformer with its secondary winding short circuited except that there is an air gap in the motor.
How does the speed of an induction motor affect the current?
As the speed decreases the rotor current will increase until it produces enough electrical torque that will counter act the mechanical torque. As the speed decreases the current becomes more reactive as a result the magnitude of current increases to produce the same active current…
Can a GTO be turned off without reversing anode voltage?
The GTO can be turned OFF by the application of reverse gate current which can be either step or ramp drive. The GTO can be turned OFF without reversing anode voltage. The dashed line in the figure shows i-v trajectory during the turn OFF for an inductive load.
How is the transient response of an inductive load explained?
When current is passed through an inductor, energy is stored. The DC transient response for an inductive-resistive load is explained using the circuit in Figure 1 and the current and voltage plots shown in Figure 2. Figure 1. L-R circuit for DC transient response. Figure 2. V-I for an inductive load.