Multi-output-shaft type independent voltage regulation variable frequency motor

Abstract

The invention provides a multi-output-shaft type independent voltage regulation variable frequency motor which comprises N stator and rotor units which are sequentially arranged in a nested mode, wherein each stator and rotor unit is provided with an output shaft; one voltage and frequency regulating device is connected in series between the armature windings of every two adjacent stator and rotor units; the wire inlet end of the armature winding of the first stator and rotor unit is connected with a driving power supply, and the wire inlet end of the armature winding of the ith stator and rotor unit is connected with the wire outlet end of the armature winding of the (i-1) th stator and rotor unit through one voltage and frequency regulating device; the outlet end of the armature winding of the Nth stator and rotor unit is short-circuited through a short-circuit device, wherein i belongs to [2, N]; and the voltage and frequency regulating device is used for providing a corresponding driving power supply for the armature winding wire inlet end of the ith stator and rotor unit by utilizing the output voltage of the armature winding wire outlet end of the (i-1) th stator and rotor unit according to the frequency adjusting instruction and / or the voltage adjusting instruction so as to adjust the rotating speed of the output shaft of the ith stator and rotor unit and / or the voltage of the armature winding wire inlet end.

Description

technical field [0001] The invention relates to a variable-frequency and speed-regulating motor, in particular to a multi-output shaft independent voltage-regulating and variable-frequency motor. Background technique [0002] In the motor winding structure, only a section of winding placed in the slot can directly affect the output power of the motor, so it is called the effective length of the winding. In order to form a loop, the winding structure of the traditional motor needs to be provided with a loop winding. The loop winding usually needs to be arranged across the slot, which makes the motor appear too long end winding, and the ineffective length of the motor winding will increase, and even exceed the effective length. Too long end windings have many disadvantages, such as low winding utilization, serious end magnetic flux leakage, excessive end loss, etc., especially for dual-rotor different-speed motors, to achieve different speeds of two different rotors, usually r...

AI Technical Summary

Problems solved by technology

In order to form a loop, the winding structure of the traditional motor needs to be provided with a loop winding. The loop winding usually needs to be arranged across the slot, which makes the motor appear too long end winding, and the ineffective length of the motor winding will increase, and even exceed the effective length. Too long end windings have many disadvantages, such as low winding utilization, serious end magnetic flux leakage, excessive end loss, etc., especially for dual-rotor different-speed motors, to achieve different speeds of two different rotors, usually requires additional mechanical devices or two sets of independent windings, so the winding utilization will be lower and the end problem will be more serious

In applications that require multiple (three or more) output shaft outputs, multiple motors are usually required to work together, which makes the above shortcomings more obvious, and the motor occupies a larger volume

And when the motor winding fails, due to the small air gap space, it is usually necessary to pull out the rotor to replace the winding. All windings need to be replaced, which greatly increases the difficulty of maintenance and the maintenance cycle is longer

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