adjustable speed drive
21Ward Leonard control — Ward Leonard Control, also known as the Ward Leonard Drive System, was a widely used DC motor speed control system introduced by Harry Ward Leonard in 1891. In early 1900s, the control system of Ward Leonard was adopted by the U.S Navy and also… …
22Doubly fed electric machine — Doubly fed electric machines are electric motors or electric generators that have windings on both stationary and rotating parts, where both windings transfer significant power between shaft and electrical system. Doubly fed machines are useful… …
23Electric generator — U.S. NRC image of a modern steam turbine generator In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge (usually carried by electrons) to flow… …
24DC injection braking — DC injection brake module [1] DC injection braking is a method of slowing AC electric motors. A DC voltage is injected into the winding of the AC motor after the AC voltage is disconnected, providing braking force to the rotor [2] …
25Metadyne — For other uses, see Metadyne (disambiguation). A Metadyne is an electrical machine with three, or more, brushes. It can be used as an amplifier or rotary transformer. It is similar to a third brush dynamo but much more complex, having additional… …
26Booster (electric power) — A Booster was a motor generator (MG) set used for voltage regulation in direct current (DC) electrical power circuits. The development of alternating current and solid state devices has rendered it obsolete. Boosters were made in various… …
27ASD — can refer to:Biology and medicine* Acute stress disorder, a psychiatric disorder * Atrial septal defect, a medical condition affecting the heart * Autism spectrum disorder, a set of brain development disordersComputing, engineering, technology,… …
28Nanomotor — A nanomotor is a molecular device capable of converting energy into movement. It can typically generate forces on the order of piconewtons. A proposed branch of research is the integration of molecular motor proteins found in living cells into… …
29The Energy Machine of Joseph Newman — Joseph Newman (inventor) redirects here. For other people called Joseph Newman, see Joseph Newman (disambiguation). Perpetual motion machine: The Energy Machine of Joseph Newman Diagram of a Newman Motor Disciplines physics …
30Mendocino motor — The Mendocino motor is a solar powered magnetically levitated electric motor. Contents 1 Description …
