5 results about "Motor efficiency" patented technology

The invention discloses a lamination tabling type stator which is formed by tabling a plurality of pole shoe modules of independently wound coils with a magnetic conductor provided with a center hole in a radial mode, wherein each pole shoe module is formed by alternately laminating and riveting long and short pole shoe punched sheets; the magnetic conductor is formed by alternately laminating a plurality of magnetic conducting ring cut sheets, which are arranged circumferentially and annularly at intervals, together with magnetic conducting ring punched sheets; inlaying gaps which have complementary shapes and are in same number with shoe feet of all the pole shoe modules are formed between adjacent magnetic conducting ring cut sheets of each layer of the magnetic conductor; and the poleshoe modules and the magnetic conductor are fixedly connected into a whole after being inlaid together. The invention also provides a manufacturing method of the lamination tabling type stator, and the method is low in winding process requirement, high in winding speed and easy in assembly. According to the manufacturing method of the stator structure and formation, the pole shoe modules are convenient in winding operation outside the stator, the winding process requirement is reduced, multi-head neck-and-neck winding of the pole shoe modules is realized, the winding productivity in unit timeis high, the winding cost is low, the winding slot fullness is high, the motor efficiency is improved, the pole shoe modules are inserted in the magnetic conductor after being subjected to winding, the assembly is easy to implement, and the working efficiency is high.

A method of operating a compressor system includes determining an efficiency of a compressor configured to operate at a plurality of output flow settings, including one or more of measuring, calibrating, calculating, or modeling motor efficiency over a range of supply voltage and pulse width modulation duty cycle combinations, each combination including a supply voltage of a plurality of supply voltages and a pulse width modulation duty cycle of a plurality of pulse width modulation duty cycles. The method further includes selecting a supply voltage and a pulse width modulation duty cycle for use at at least one output flow setting of the plurality of output flow settings based on the determined efficiency of the compressor, generating the selected supply voltage by maintaining, reducing, or increasing a nominal supply voltage, and applying the selected pulse width modulation duty cycle.

The present invention relates to the improvement of motor structure. The present invention features that there are insulating layer between the strip or coil and iron of motor rotor, and one or two stator iron cores with at least two embedded triphase windings outside the rotor. Of the triphase windings, one is connected to power supply and named main winding and the other(s) with equal phase or different phase end connected parallelly or serially to form a loop is not connected to power supply and named subsidiary winding. The present invention has the merit of that the increased subsidiary winding or two stator iron cores and changed stator phase angle prduces in the rotor an additional torque to raise motor efficiency obviously.