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However it complicates the electrical design, because a switching system must deliver power to the different windings and limit torque ripple. [1] [2] Sources disagree on whether it is a type of stepper motor. [3] The simplest SRM has the lowest construction cost of any electric motor. Industrial motors may have some cost reduction due to the ...
Now, if this motor is fed with current of 2 A and assuming that back-EMF is exactly 2 V, it is rotating at 7200 rpm and the mechanical power is 4 W, and the force on rotor is = N or 0.0053 N. The torque on shaft is 0.0053 N⋅m at 2 A because of the assumed radius of the rotor (exactly 1 m).
The ALCO RS-3 is a 1,600 hp (1.2 MW), B-B diesel-electric locomotive manufactured from May 1950 to August 1956 by American Locomotive Company (ALCO) and its subsidiary Montreal Locomotive Works (MLW).
For electrical motors, a similar kind of information is conveyed by the service factor, which is a multiplier that, when applied to the rated output power, gives the power level a motor can sustain for shorter periods of time. The service factor is typically in the 1.15-1.4 range, with the figure being lower for higher-power motors.
Electric vehicles: TP POWER TP100XL brushless DC motor [39] 7 kg 15 lb 75 kW 101 hp 9.0 kW/kg 5.5 hp/lb Electric vehicles: Emrax 268 brushless AC motor [40] 19.9 kg 44 lb 230 kW 310 hp 11.56 kW/kg 7.03 hp/lb Electric aircraft: Lucid Motors brushless DC motor [35] 31.4 kg 69 lb 500 kW 670 hp 15.8 kW/kg 9.68 hp/lb Electric vehicle
Newman's Energy Machine was a DC motor which the inventor, Joseph Newman, claimed to produce mechanical power exceeding the electrical power being supplied to it. In 1979, Newman attempted to patent the device, but it was rejected by the United States Patent Office as being a perpetual motion machine . [ 1 ]
A repulsion motor is a type of electric motor which runs on alternating current (AC). It was formerly used as a traction motor for electric trains (e.g. SR Class CP and SR Class SL electric multiple units) but has been superseded by other types of motors. [citation needed] Repulsion motors are classified as single phase motors.
The YASA P400R series of electric motors produces up to 160 kW (210 hp) peak power at 700 V and 370 N⋅m (270 ft⋅lb) of peak torque at 450 Amps. [18] At this peak power, the off-the-shelf P400 Series achieves a power density of 6.67 kW/kg (4.06 hp/lb), with continuous rating of up to 100 kW (130