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How to test motor KV? Why my tested motor KV is different from the specification?

Posted by Christina Zhang on

How to test motor KV? Why my tested motor KV is different from the specification?

Some notices when test motor KV with VESC? KV must be tested without load. To compatible with different kinds motors,  VESC default parameters for motors are more conservative in the design. If test by VESC, test value would be lower about 5% than actual value. Tested KV will be different under different modes and parameters. Tested value will be higher when test in following situations: with hall sensor, high angle, FOC higher than BLDC, V6 higher than V4.   What is KV? Does higher KV mean faster motor? The KV rating (not to be confused with kilo-volt) is the RPM of the motor (k)...

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