Search results
Direct torque control – the world’s most advanced AC drive technology. The purpose of this technical guide is to explain what DTC is; why and how it has evolved; the basic theory behind its success; and the features and benefits of this new technology. Table of contents. 04. 05 – 12. 06 – 07. 07 – 09. 10 – 11. 12 – 16. 17 – 25. 17 – 18. 18 – 22.
The output torque of an electrical motor depends on the intensity of the rotor and stator magnetic fields and on their phase relation: ∝𝐵 𝑜 ∙𝐵 𝑎 ∙sin(𝜃)∝𝑰 𝒑𝒉 ∙𝐬 (𝜽)
For every motor, there is a specific Torque/Speed curve and Power curve. The graph above shows a torque/speed curve of a typical D.C. motor. Note that torque is inversely proportioal to the speed of the output shaft.
Compound DC Motors ..... 81 Effect of the field current on the speed-voltage and torque-current characteristics of a separately-excited dc motor. Description and operation of the series, shunt, and compound dc motors. Comparing the speed-torque characteristics of the separately-
The DC motor creates torque from electrical excitation of two magnetic circuits, the field and the armature. If the process is partially reversed by electrically exciting the stator mounted
28 gru 2017 · In a standard (brushed, permanent magnet) DC motor, torque is directly proportional to current. So if you find that the motor sometimes has less torque it's simply because it is drawing less current. I want an answer that explains (preferably with formulas) what determines voltage, current, torque and speed, in simple terms.
This unit will discuss how these magnetic fields are produced in dc motors, and how magnetic fields induce voltage in dc generators. The basic principle of a dc motor is the creation of a rotating magnet inside the mobile part of the motor, the rotor.
