A high temperature superconductor (HTS) developed by Northrop Grumman Corporation and tested by the U.S. Navy holds this title. It is the world’s first 36.5 megawatt (49,000 horsepower) HTS ship propulsion motor.
What makes an electric motor more powerful?
The strength of the motor (torque) is determined by voltage and the length of the wire in an electromagnet in the stator, the longer the wire (which means more coils in the stator) the stronger the magnetic field. This means more power to turn the rotor.
Which electric motor is best?
What is the largest electric boat motor?
The biggest production outboard in the combustion world, as we understand, is currently the 627SV from Seven Marine, a giant, supercharged V8 peaking at 627 horsepower and weighing in at a monster 497 kg (1094 lb).
Why do electric motors lose torque at high rpm?
Because doing so would compromise efficiency and drivability. As engine speed increases, so does it’s inefficiency. Higher RPMs cause more wear, and waste more fuel. For that reason, vehicles usually cruise at a engine speed much below the point where they make maximum power.
What size electric motor do I need?
General rule of thumb: you need at least 2 lbs. of thrust for every 100 lbs. of fully-loaded boat weight (people and gear included).
Does Tesla use brushless motors?
Today, all the hybrids are powered by DC brushless drives, with no exceptions. The only notable uses of induction drives have been the General Motors EV-1; the AC Propulsion vehicles, including the tzero; and the Tesla Roadster. Both DC brushless and induction drives use motors having similar stators.
How do I choose an electric car motor?
10 things to consider when choosing an electric motor
- Vehicle characteristics. …
- Driving cycles. …
- Vehicle configuration (electric, hybrid) …
- Maximal speed. …
- Maximal torque. …
- Maximal power. …
- Battery Capacity. …
- Battery Voltage.
17 мая 2016 г.
How do you choose a motor?
There are several characteristics that you need pay attention to when selecting a motor but voltage, current, torque, and velocity (RPM) are most important. Current is what powers the motor and too much current will damage the motor. For DC motors, operating and stall current are important.
How long do electric boat motors last?
The larger the rating, the more power the battery can hold, and the longer it will be able to power a motor at a given speed. For example, a 100 amperage hour battery is one that would be able to supply 25 amps of power for 4 hours (25 amps * 4 hours = 100 amp hours) before running out of energy.
How fast can an electric boat motor go?
Having a maximum speed of only 5 mph may seem slow, but it is what makes trolling motors ideal for fishing. Many people use trolling motors as their primary means of propulsion. This is popular on Jon Boats, dinghys, and other small personal watercraft.
What is the highest hp outboard motor?
Miami Beach, Feb. 12, 2015–The world’s largest outboard engine, a 627-Horsepower outboard motor by Seven Marine, debuted at the 2015 Miami International Boat Show today. Here is a bullet list of features this behemoth of a motor possesses.
Why do electric cars produce more torque?
The benefit of using an electric motor to power a car is that it can help drivers reach maximum torque from 0 RPM. This is because electric motors use an electric current, which moves through a magnetic field and creates the force necessary to rotate the armature and get the car moving.
What gives an electric motor torque?
Electric motors operate on three different physical principles: magnetism, electrostatics and piezoelectricity. 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.
Why do electric motors lose torque?
Nearly half of electrical failures in motors begin with weakening of the insulation around individual wires in the motor coils. This is often caused by thermal stress, contamination and movement of the winding due to the magnetic forces during start-up and shut-down of the motor.