What is meant by synchronising power?
Synchronizing Power is defined as the varying of the synchronous power P on varying in the load angle δ. It is also called stiffness of coupling, stability or rigidity factor. P s y n = V E f X s c o s δ P ∝ 1 X s. ∴ Synchronizing power of a synchronous machine is inversely proportional to the synchronous reactance.
What is meant by synchronizing power coefficient?
The synchronizing power coefficient (𝑃syn) is the measure of the stiffness of the electromagnetic coupling between the stator and the rotor. A large value of the synchronizing coefficient (𝑃syn) shows that the electromagnetic coupling is rigid.
What is meant by two reaction theory?
Two Reaction Theory was proposed by Andre Blondel. The theory proposes to resolve the given armature MMFs into two mutually perpendicular components, with one located along the axis of the rotor of the salient pole. It is known as the direct axis or d axis component.
What is V and inverted V curves?
What is V Curve and inverted v curve? The graphical representation of armature current Ia vs field current If is called V-curve since the final view looks like English letter V. At the same time the power factor vs field current is called inverted V-curve of a synchronous motor.
What is Q and D axis?
The axis along the axis of the rotor is called the direct or the d axis. The axis perpendicular to the d axis is known as the quadrature or q axis. The direct axis flux path involves two small air gaps and is the path of the minimum reluctance.
What is the EMF equation of DC generator?
As the armature rotates, a voltage is generated in its coils. In the case of a generator, the emf of rotation is called the Generated emf or Armature emf and is denoted as Er = Eg. In the case of a motor, the emf of rotation is known as Back emf or Counter emf and represented as Er = Eb.