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Performance Comparison For 4 Kind of Driving Motor



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The general tests of electric motors：2

2. Determination of dc resistance of winding: 1) Significance of dc resistance measurement: The dc resistance of the windings in cold state is one of the main parameters of three-phase asynchronous motors. By comparing the measured value of the resistance of the windings with the design value, it is possible to check whether the windings have broken wires and short-circuit between turns, whether the welding parts have virtual welding or open welding, whether the contact points have bad contact and other phenomena. 2) Dc resistance measurement method: Measuring the dc resistance of the motor should be done when the winding is cold. First, place the motor indoors for a period of time, and measure the temperature of the motor winding end or core with a thermometer. At this time, the measured temperature is the actual temperature of the winding in the cold state. If the temperature of the winding end or core cannot be measured, the temperature of the housing may be substituted...
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one kind of typical permanent magnet motor（PMSM）

EV/HEV driving motor supplier , LEGO, China yulongzhu@lego-motors.com
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New energy electric/hybrid vehicle driving motor development trend

01. Development trend of new energy vehicle driving motor type 1.1 ac induction motor At present, a variety of pure electric and hybrid new energy vehicles on the market, permanent magnet synchronous motor accounted for the majority, induction motor accounted for a small part, these two kinds of motor is basically all the electric passenger car drive motor. Compared with permanent magnet synchronous motor, ac induction motor is larger, but the price is moderate, and the induction motor can do a lot of power and there is no demagnetization problem. 1.2 permanent magnet synchronous motor For small and medium-sized electric vehicles with high requirements on space layout size, permanent magnet synchronous motor with higher power and torque density is the preferred choice. Moreover, synchronous motor is more suitable for frequent start and stop conditions and suitable for the application scenarios of urban commuting. This is one of the reasons for Tesla Model 3 to use synchronou...
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