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1 Introduction to Power Quality
Published in C. Sankaran, Power Quality, 2017
Inductance — Inductance is the relationship between the magnetic lines of flux (Ø) linking a circuit due to the current (I) producing the flux. If I is the current in a wire that produces a magnetic flux of Ø lines, then the self inductance of the wire, L, is equal to Ø/I. Mutual inductance (M) is the relationship between the magnetic flux Ø2 linking an adjacent circuit 2 due to current I1 in circuit 1. This can be stated as M = Ø2/I1. Figure 1.4 points out the two inductances. The unit of inductance is the henry [H], named for the American scientist Joseph Henry. The practical unit of inductance is the millihenry [mH], which is equal to 10–3 H. Self inductance of a circuit is important for determining the characteristics of impulse voltage transients and waveform notches. In power quality studies, we also are concerned with the mutual inductance as it relates to how current in one circuit can induce noise and disturbance in an adjacent circuit.
Electrical Power Systems/Improved Efficiency
Published in Dale R. Patrick, Stephen W. Fardo, Ray E. Richardson, Brian W. Fardo, Energy Conservation Guidebook, 2020
Dale R. Patrick, Stephen W. Fardo, Ray E. Richardson, Brian W. Fardo
Any inductive circuit exhibits the property of inductance, which is the opposition to a change in current flow in a circuit. This property is found in coils of wire (which are sometimes called inductors), motors and generators, and transformer windings. Inductance is also present in electrical power transmission distribution lines to some extent. The unit of measurement for inductance is the henry (H). In an inductive circuit with AC voltage applied, an opposition to current flow is created by the inductance. This type of opposition is known as inductive reactance (XL).
Power System Fundamentals
Published in Stephen W. Fardo, Dale R. Patrick, Electrical Power Systems Technology, 2020
Stephen W. Fardo, Dale R. Patrick
Any inductive circuit exhibits the property of inductance (L), which is the opposition to a change in current flow in a circuit. This property is found in coils of wire (which are called inductors) and in rotating machinery and transformer windings. Inductance is also present in electrical power transmission and distribution lines to some extent. The unit of measurement for inductance is the henry (H). A circuit has a 1-henry inductance if a current changing at a rate of 1 ampere per second produces an induced counter electromotive force (cemf) of 1 volt.
Design of an intelligent heuristic algorithm-based optimised fuzzy controller for speed control of a separately excited DC motor
Published in Australian Journal of Electrical and Electronics Engineering, 2020
Pikaso Pal, V. Mukherjee, S. Bhakta
where is the armature voltage (in volt), is the back emf of the motor (in volt), is the armature current (in ampere), is the armature resistance (in ohm), is the armature inductance (in Henry), is the field current (in ampere),is the voltage applied to the field (in volt), is the field resistance (in ohm), is the field inductance (in Henry), is the load torque, is the damping constant, is the motor inertia.
A computation-driven, energy-efficient and hybrid of microwave and conventional drying process for fast gooseberry candy production
Published in Journal of Microwave Power and Electromagnetic Energy, 2019
Chanpreet Singh, Nitin Saluja, Rajeev Kamal Sharma
where, = electric field (V/m), = Magnetic field (Weber/m), is electric current density (amperes/m2), = wave angular frequency (rad/m), µ magnetic permeability of the sample (Henry/m), is magnetic permeability of free space, = electric conductivity of the sample (S/m), = dielectric permittivity (F/m), = electrical permittivity of free space (F/m), = relative dielectric constant of the material, = dielectric loss factor of the material.
Evaluation of electromagnetic intrusion in brushless DC motor drive for electric vehicle applications with manifestation of mitigating the electromagnetic interference
Published in International Journal of Ambient Energy, 2020
M. Karthik, S. Usha, K. Venkateswaran, Hitesh Panchal, M. Suresh, V. Priya, K. K. Hinduja
The LC filter can be used to reduce the distortion produced in the DC link. The LC filter cripples the unwanted frequency components present in the DC link and gives ripple less DC as an output. LC filter is design carried out by the following expressions: where XL is the Inductance Impedance; Xc is the Capacitance Impedance; Z is the impedance (ohms); C is the Capacitance (Farad); L is the Inductance (Henry); FC is the Cut off frequency (Hertz).