Opening Hour

Mon - Sun, 08:00 - 24:00

Call Us

+86-21-58386189

Control Engineering | Understanding permanent magnet motors

Control Engineering | Understanding permanent magnet motors

+

 · In an induction machine, the rotor flux linkage will be the same between the d axis and the q axis. However, in a permanent magnet machine, the magnet reduces the available iron for flux linkage. A magnet's permeability is near that of air. Therefore, the magnet can be viewed as an air gap. The magnet is in the flux path as it travels through the d axis. The flux path traveling through the q ...

Journal of Physics: Conference Series PAPER OPEN ACCESS ...

Journal of Physics: Conference Series PAPER OPEN ACCESS ...

+

Rotor solidity effects on the performance of verticalaxis wind turbines at high Reynolds numbers Miller, S. Duvvuri, Kelly et al.Recent citations Investigating the Effect of Geometrical and Dynamic Parameters on the Performance of Darrieus Turbines: A Numerical Optimization Approach via QBlade Algorithm Abdullah MURATOLU and Muhammed Sungur DEMRAppliion of Richardson ...

Innovative Offshore VerticalAxis Wind Turbine Rotors ...

Innovative Offshore VerticalAxis Wind Turbine Rotors ...

+

Innovative Offshore VerticalAxis Wind Turbine Rotors. This project seeks to advance large offshore verticalaxis wind turbine (VAWT) rotor technology from concept to labscale prototype stage through four major research thrusts: innovative aeroelastic rotor conceptual design, deepwater system design and cost analysis, rotor material and ...

Rotor Balancing Tutorial

Rotor Balancing Tutorial

+

Unbalance will occur any time a rotor or a component mounted on a rotor has a mass center (or center of gravity, cg.) that is not coincident with the axis of rotation. When this occurs, a force is generated due to rotation of the shaft that is defined by the following equation and shown graphically in Figure 1:

Causes And Solutions Of Unbalance Of Rotor In Impact Crusher

Causes And Solutions Of Unbalance Of Rotor In Impact Crusher

+

 · Causes And Solutions Of Unbalance Of Rotor In Impact Crusher | Author: Shibang Group. High speed rotating rotor with blow bar is the main working part of impact crusher. In order to meet the requirements to crush large sized ore, the rotor should have sufficient weight and run stably. After replacing new blow bar and assembling and repairing old blow bar, maintainers should .

Vantage Robotics

Vantage Robotics

+

Flight time – Recon Rotor Set: 50 minutes: Flight time – Shrouded Rotor Set: 32 minutes: Airframe mass : 597 – 697 g (depending on battery used) Flight speed: 20 m/s / 45 mph / 72 km/hr: Stealth <37 dBA at 25 meter range: Visibility: Not visible at 100 meters seen against terrain: Operational temperature range20° – 45° C: Ingress protection: IP53 in flight: Flight range: 45 km / 28 ...

SinglePhase Series Motor (Universal)

SinglePhase Series Motor (Universal)

+

That is, the rotor axis aligns itself to the stator field axis. 3rd Class / AC Machines Dr. Inaam Ibrahim 94 Elementary operation of variable reluctance motor can be explained through the diagram of fig. 1. Fig.(1)four phase 4/2 VR stepper motor It is a fourphase, 4/2pole (4 poles in the stator and 2 in the rotor), singlestack, variable reluctance stepper motor. Four phases are A, B, C and ...

Helicopter Flying Handbook (FAAH808321B) Glossary Index

Helicopter Flying Handbook (FAAH808321B) Glossary Index

+

Chordwise axis. For semirigid rotors, a term used to describe the flapping or teetering axis of the rotor. Coaxial rotor. A rotor system utilizing two rotors turning in opposite directions on the same centerline. This system is used to eliminated the need for a tail rotor. Collective pitch control. The control for changing the pitch of all the rotor blades in the main rotor system equally and ...

Construction, Working and Maintenance of Crushers for ...

Construction, Working and Maintenance of Crushers for ...

+

Crushers and breakers are used to reduce size of mined and quarried material for further processing or to size suitable for the intended end use. The goal of a crusher is to crush the given material in to the material with certain size and shape. Information about crushing technology, construction, working and maintenance of crushers for bulk materials is given in this article. Crushing ...

Construction, Working and Maintenance of Crushers for ...

Construction, Working and Maintenance of Crushers for ...

+

Crushers and breakers are used to reduce size of mined and quarried material for further processing or to size suitable for the intended end use. The goal of a crusher is to crush the given material in to the material with certain size and shape. Information about crushing technology, construction, working and maintenance of crushers for bulk materials is given in this article. Crushing ...

Rotor Performance of a UH60 Rotor System in the NASA Ames ...

Rotor Performance of a UH60 Rotor System in the NASA Ames ...

+

R = rotor windaxis lift, positive up, lb M TIP = rotor tip Mach number, rotor performance and loads in the low speed flight regime, aΩR/c s P=rotor shaft power, Torque * Ω, ftlb/s r=rotor blade radial loion, ft R=rotor radius, ft S R = rotor blade area, bcR, ft 2 T=rotor thrust, lb V∞ = free stream velocity, ft/s Z=rotor hub height from the ground or test section floor αs = rotor ...

Construction, Working and Maintenance of Crushers for ...

Construction, Working and Maintenance of Crushers for ...

+

Crushers and breakers are used to reduce size of mined and quarried material for further processing or to size suitable for the intended end use. The goal of a crusher is to crush the given material in to the material with certain size and shape. Information about crushing technology, construction, working and maintenance of crushers for bulk materials is given in this article. Crushing ...

Turbine theory: Aerodynamic load

Turbine theory: Aerodynamic load

+

BEM is strictly speaking a 2D theory, framed in the rotor plane: for a simple 2D rotor, subject to flow normal to the rotorplane, the terms axial and tangential refer unambiguously to flow downwind and opposite to the rotational velocity respectively.

Wind Generation

Wind Generation

+

Rotor: ¾The portion of the wind turbine that collects energy from the wind is called the rotor. ¾The rotor usually consists of two or more wooden, fiberglass or metal blades which rotate about an axis (horizontal or vertical) at a rate determined by the wind speed and the shape of the blades. ¾The blades are attached to the hub, which in turn is attached to the main shaft. Drag Design ...

Permanent magnet synchronous motor with sinusoidal flux ...

Permanent magnet synchronous motor with sinusoidal flux ...

+

Permanent magnets generate a rotor magnetic field that creates a sinusoidal rate of change of flux with rotor angle. For the axes convention in the preceding figure, the aphase and permanent magnet fluxes are aligned when rotor mechanical angle, θ r, is block supports a second rotor axis definition in which rotor mechanical angle is defined as the angle between the aphase magnetic ...

PMSM electrical parameters measurement

PMSM electrical parameters measurement

+

Equivalent phase model of PMSM in d/q axis for a locked rotor shaft Since Vd = (2/3)V, Vq = 0, and I is the same as Id and the total resistance of the circuit is (3/2)Rs, the equivalent inductance seen from the supply source is (3/2)Ld. Similar explanation can also be applied to Lq when the rotor is locked at 90° electrical. Qaxis alignment To measure the inductance in qaxis without ...

doubleshaft hammer crushers

doubleshaft hammer crushers

+

Fiveaxle rotor for a TITAN ® crusher, type 80D160 TITAN ® doubleshaft hammer crusher with grate basket carrier Pentagonal rotor shaft for a TITAN ® crusher, type 60D160 Perfect material thanks to rotating hammers 4 ®TITAN doubleshaft hammer crushers 5. From top: Spare parts store thyssenkrupp control and diagnostic system Whether the spare parts are to be col lected by the customer or ...

MECHANICAL SPARE PARTS FOR CRUSHERS AND MILLS

MECHANICAL SPARE PARTS FOR CRUSHERS AND MILLS

+

Vertical axis mills are particular hammer mills in which the rotor axis is vertical. The principle of operation is the same as the hammer mill: inert are crushed by shock. The cone mills crush the inert between a wall conical or tapered cylinder fixed and a conical body with eccentric movement. The parts of the various types of mills subject to wear and tear are: impellers, fedding and ...

MECHANICAL SPARE PARTS FOR CRUSHERS AND MILLS

MECHANICAL SPARE PARTS FOR CRUSHERS AND MILLS

+

Vertical axis mills are particular hammer mills in which the rotor axis is vertical. The principle of operation is the same as the hammer mill: inert are crushed by shock. The cone mills crush the inert between a wall conical or tapered cylinder fixed and a conical body with eccentric movement. The parts of the various types of mills subject to wear and tear are: impellers, fedding and ...

Vertical Shaft Impact Crushers

Vertical Shaft Impact Crushers

+

Crushers can also be used for shaping or removal of soft stone from aggregate. Advanced alternatives with open table designs, multiport rotor and larger bearings than many other VSI crushers are the main reasons for our crushers to provide high value solutions and deliver high performance. We provide static, wheel mounted VSI plants and components. VSI Impact Crushers are suitable for ...

Motor Sizing Basics Part 2: Load Inertia

Motor Sizing Basics Part 2: Load Inertia

+

Load inertia, or moment of inertia, is the resistance of any physical object to any change in its speed from the perspective of the rotational a rotary load, it's the product of its mass and the square of the perpendicular distance of the mass from the axis. Load inertia is typically referred to as "J".

D, Q Reference Frames for the Simulation of Induction Motors

D, Q Reference Frames for the Simulation of Induction Motors

+

+d axis rotor phase A axis stator phase A axis Fig. 1. D, Q axes superimposed onto a threephase induction motor. +q axis [FOdq] = [Po][F ABcJ where [1/2 [Po] = 2/3 cos e sin e (1) 1/2] cos(e + A) sin(e + A) 1/2 cos(e A) sin(e A) (2) A new variable called the zero sequence component is included with the d,q variables in order to handle unbalanced voltages and to invert Park's transform ...

Vertical Shaft Impact Crusher Spares parts manufacturer ...

Vertical Shaft Impact Crusher Spares parts manufacturer ...

+

We provide complete solution for all VSI crusher needs, like VSI rotor tips, back up tips, cavity wear plates, upper lower plates, distribution cone, carbide flats, TC bars manufacture all kinds of Vertical Shaft Impact Crusher Spares for Msand manufacturing plants, crushed sand rotor tip. All our spares are exstock and can be delivered on the someday.