What makes a motor high torque?
A high torque motor is toroid shaped, like a donut, and thus has a large diameter and short axis. These motors can directly drive the application without additional mechanics, like worm wheels, belts or pulleys.
What is the most efficient electric motor design?
Tests carried out on a 44 megawatt 6-pole synchronous ABB motor shortly before delivery showed an efficiency 0.25 percent greater than the 98.8 percent stipulated in the contract, resulting in the world record for electric motor efficiency.
How do you increase the torque of an electric motor?
The way to increase the torque that the motor delivers, mechanically, would be:
- To increase the diameter of the wire in the windings (which is to say, completely remanufacture the motor)
- to have the output shaft coupled to a gear reduction setup, which would lower the final drive rpms, but increase the torque.
What is high torque?
At the same time, the torque should be applied over the largest possible engine speed range. In terms of driving experience, high torque means the shortest possible delay between the driver pressing the gas pedal and the engine responding.
What is torque in electric motor?
Torque is a rotating force produced by a motor’s crankshaft. The more torque the motor produces, the greater is its ability to perform work. Since torque is a vector acting in a direction it is commonly quantified by the units Nm or pound-feet.
What makes a motor High efficiency?
The maxon high efficiency motors get their name because they provide efficiencies in the 90 percentiles as opposed to the 50 to 60 percent range for most motors in their class. The key to high-efficiency for maxon lies in the fact that they have no iron losses.
What is the efficiency of a high efficiency motor?
High & Premium Efficiency Motors Premium efficiency motors offer improved efficiencies of 2 to 8% over standard motors. They improve upon standard motors by a number of means: 1) Increased copper (up to 60%) in the winding reduces resistance losses and operating temperatures due to the larger amount of thermal mass.
How do motors create torque?
In magnetic motors, magnetic fields are formed in both the rotor and the stator. The product between these two fields gives rise to a force, and thus a torque on the motor shaft. One, or both, of these fields must change with the rotation of the rotor.
What does size 11 mean on a motor?
NEMA sets standards for many electrical products, including motors. For, example, “size 11” mean the mounting face of the motor is 1.1 inches square Standards Publication ICS 16 standard covers the components used in a motion/position control system providing precise positioning, speed control, torque control, or any combination thereof.
What is a HTM 3500 motor?
The new high-torque, direct drive electric motor has been called the HTM 3500. The HTM 3500, combines high torque with low motor speeds, fitting directly onto the propshaft of a large electric vehicle, negating the need for a separate gearbox.
What is the working principle of a motor?
• Each combination of currents in the motor phases moves and keeps the motor in a stable position. At each position of the magnetic field more mechanical positions may correspond. • The motor rotation is performed through a proper sequence of phase currents.
What are the characteristics of a magnetic drive motor?
• The magnetic field intensity is proportional to the current forced into the motor leads. • The magnetic field rotation is automatically obtained commutating the active coil through mechanical switches (brushes). • The load angle is almost constant, and it is about 90° allowing the maximum efficiency (current vs. torque proportion).