Method for determining practical power of DC motor for electric bicycle via maximum efficiency point
An electric bicycle, the most efficient technology, applied in the field of measurement of the actual power of the motor, can solve the problem that the motor cannot be measured
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[0016] The present invention adopts the same test instrument as the traditional motor test without knowing the real rated power of a motor, and adopts the opposite test idea. First measure a complete "efficiency-output power" curve of the motor, use the graphing method to find the highest efficiency point on the curve, and calculate the corresponding output power, and use the found power point as the rated power of the motor. Then carry out the test of rated power input electrical parameters (voltage, current, power, power factor) and output mechanical parameters (torque, speed).
[0017] The theoretical basis of the present invention is that (1) the "efficiency-output power" curve of the motor must be a convex and substantially symmetrical curve. (2) In the electromagnetic design of the motor, the highest efficiency point of the motor must be designed as the main load and rated load point in the actual use of the motor, so that the motor can run most stably, with suitable tem...
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