Contents
What causes low inductance?
With slotless and air core motors, the reduced amount of iron in the motor lowers inductance. Less EMF is created per turn of the phase coil. Small form factors and extremely smooth torque or force is a direct result of removing iron from the circuit.
What happens to current If inductance increases?
Ohm’s law states that the electrical current (I) flowing in an circuit is proportional to the voltage (V) and inversely proportional to the resistance (R). Therefore, if the voltage is increased, the current will increase provided the resistance of the circuit does not change.
How do you increase inductance?
As well as increasing the number of coil turns, we can also increase inductance by increasing the coils diameter or making the core longer. In both cases more wire is required to construct the coil and therefore, more lines of force exists to produce the required back emf.
What happens if the inductance of parallel inductors is not the same?
If the parallel connected inductors have the same value of inductance then equal current will flow through them. If the value of inductance are not same then current through the inductors will be different.
For a given rate of change of current, less will be the inductance in less voltage. These are the basic points to be considered in parallel connection of inductors. Now we will discuss the parallel connection of inductors with and without considering mutual coupling between these inductors.
How to calculate the total inductance of two inductors?
For avoiding complexity in dealing with fractions, we can use product over sum method to calculate the total inductance. If two inductors are connected in parallel, and if there is no mutual inductance between them, then the total inductance is given as. L T = (L 1 × L 2 )/ (L 1 + L 2)
How is the total current calculated in a parallel resistor inductor circuit?
Now we can apply Ohm’s Law (I=E/Z) vertically to two columns of the table, calculating current through the resistor and current through the inductor: Just as with DC circuits, branch currents in a parallel AC circuit add to form the total current ( Kirchhoff’s Current Law still holds true for AC as it did for DC):