Highefficient threephase asynchronous motor
Highefficient threephase asynchronous motor
 CN 1,688,082 A
 Filed: 03/25/2005
 Published: 10/26/2005
 Est. Priority Date: 03/25/2005
 Status: Active Application
First Claim
Patent Images
1. , highefficient threephase asynchronous motor is characterized in that:
 under the fixed prerequisite of the rated speed n of motor number of polepairs p, motor, the following parameter of threephase asynchronous should meet following formula substantially;
$1\frac{\mathrm{pn}}{3000}=\frac{L{r}_{r}}{{L}_{r}\sqrt{R({r}_{s}+{r}_{r})}},$Wherein;
the mutual inductance L between the stator and rotor, equivalent rotor winding phase resistance r _{r}, rotor winding selfinduction L _{r}, the equivalent parallel excitation resistance R corresponding, stator winding phase resistance r with the motor iron loss _{s}
Chinese PRB Reexamination
Abstract
This invention puts forward a check formula for designing a high efficient threephase asynchronous motor according to the principle that if the active and passive subsystems in an AC motor are matched reasonably, a high efficient motor can be designed.
2 Claims

1. , highefficient threephase asynchronous motor is characterized in that:
 under the fixed prerequisite of the rated speed n of motor number of polepairs p, motor, the following parameter of threephase asynchronous should meet following formula substantially;
$1\frac{\mathrm{pn}}{3000}=\frac{L{r}_{r}}{{L}_{r}\sqrt{R({r}_{s}+{r}_{r})}},$ Wherein;
the mutual inductance L between the stator and rotor, equivalent rotor winding phase resistance r _{r}, rotor winding selfinduction L _{r}, the equivalent parallel excitation resistance R corresponding, stator winding phase resistance r with the motor iron loss _{s}
 under the fixed prerequisite of the rated speed n of motor number of polepairs p, motor, the following parameter of threephase asynchronous should meet following formula substantially;

2. highefficient threephase asynchronous motor according to claim 1 is characterized in that:
 the data with the described formula left side are benchmark, and the data and its relative error on formula the right should be less than 2%.
Specification(s)