Search results
Results from the WOW.Com Content Network
The motor constant is winding independent (as long as the same conductive material is used for wires); e.g., winding a motor with 6 turns with 2 parallel wires instead of 12 turns single wire will double the velocity constant, , but remains unchanged.
A piezoelectric motor or piezo motor is a type of electric motor based upon the change in shape of a piezoelectric material when an electric field is applied. Piezoelectric motors make use of the converse piezoelectric effect whereby the material produces acoustic or ultrasonic vibrations to produce linear or rotary motion. [ 85 ]
This motor constant shall be expressed by the SI Units N²m²/W, since resistive power loss "P" is not dependent on current (or torque) linearly, but quadratically. P = I²R (resistive loss) Torque "T" and armature current "I" are proportional to each other. This is expressed by the Torque constant Kt. Back EMF Force (or Voltage) constant "Ke ...
Although traditionally used for constant-speed service, single- and three-phase induction motors are increasingly being installed in variable-speed applications using variable-frequency drives (VFD). VFD offers energy savings opportunities for induction motors in applications like fans, pumps, and compressors that have a variable load.
First, electromagnetic transients of three-phase induction motor are analyzed. Initial attempt is made to derive `equivalent circuits valid for both steady state and transient states in induction motor. The key point of FAM control is that the exciting current is kept constant in magnitude and continuous in the equivalent circuit.
The switched reluctance motor (SRM) is a type of reluctance motor. Unlike brushed DC motors , power is delivered to windings in the stator (case) rather than the rotor . This simplifies mechanical design because power does not have to be delivered to the moving rotor, which eliminates the need for a commutator .
Constant air-gap induction motor equivalent circuit. The circle diagram (also known as Heyland diagram or Heyland circle) is the graphical representation of the performance of the electrical machine [1] [2] [3] drawn in terms of the locus of the machine's input voltage and current. [4]
Series wound motor; Series-parallel switching; Servomotor; Shaded-pole motor; Shaft voltage; Single-molecule electric motor; Singly fed electric machine; Slip ring; Spacecraft electric propulsion; Specific fan power; Split-phase electric power; Stator; Stepper motor; Sub-Micro AC Drive; Superconducting electric machine; Switched reluctance ...