Synchronization motor and its speed adjustment of DC armature three-phase AC excitation

A synchronous motor, three-phase AC technology, applied in synchronous motors for single-phase current, AC motor control, single motor speed/torque control, etc. The price of the governor is very expensive, etc.

Inactive Publication Date: 2008-01-09
丁振荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But it is unreasonable for synchronous motors that require speed regulation. Now the speed regulation of synchronous motors mainly depends on power electronic devices to convert the three-phase AC power supplied to the motor, such as frequency conversion and variable voltage speed regulators. These speed regulators are very expensive. , no matter the l

Method used

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  • Synchronization motor and its speed adjustment of DC armature three-phase AC excitation
  • Synchronization motor and its speed adjustment of DC armature three-phase AC excitation

Examples

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Embodiment Construction

[0021] As shown in Figure 1, the rotating magnetic field generated by the three-phase AC excitation winding 1 rotates counterclockwise, and the magnetic field has an S pole on the bottom and an N pole on the bottom. Current, according to the left-hand rule, the electromagnetic torque T of the DC armature winding 3 is also counterclockwise.

[0022] To change the direction of the motor, the rotating magnetic field generated by the three-phase AC excitation winding 1 rotates clockwise but the polarity does not change, and the DC armature winding 3 passes through the slip ring into the DC current from the upper and lower paper surfaces, or three-phase The rotating magnetic field generated by the AC excitation winding 1 rotates clockwise, while the polarity changes, and the direction of the DC current in the DC armature winding 3 remains unchanged.

[0023] To generate braking torque, change the current direction of the DC armature winding 3 under the condition of keeping the pola...

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Abstract

The invention is concerned with the three phase direct armature altermating current exciting synchronous machine and its timing, belongs to the electric machine manufacturing and the power electronic technology technique field. The three phase altermating current group 1 is designed as the excitation winding with its power taking the smaller part of the machine capacity, which locating in the circle groove of the stator core 2, and the current winding 3 is designed as the armature winding with its power taking large part of the machine capacity, which locating within the rotor core ex-circle groove 4 in distributed winding state. The invention uses the simply large power current variable voltage control device instead of the more expensive or complicated one, especially, the high current transducer to achieve the timing of the synchronous machine.

Description

technical field [0001] The invention relates to a novel synchronous motor and its speed regulation, in particular to a DC motor with an excitation magnetic field rotating, belonging to the technical fields of motor manufacturing and power electronics. Background technique [0002] Now the traditional synchronous motor, the excitation winding is a DC winding, which is connected to a DC power, and its power is relatively small, generally accounting for about 20% of the output power of the motor. It generally accounts for about 80% of the output power of the motor. [0003] Most of the electric energy required by the synchronous motor can be directly supplied to the armature winding of the motor in the form of three-phase alternating current without conversion, while the DC electric energy converted from alternating current required by the field winding only accounts for a small part of the output power of the motor. It is reasonable for occasions that do not require speed reg...

Claims

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Application Information

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IPC IPC(8): H02K19/10H02K3/18H02P6/08H02P27/04
Inventor 丁振荣
Owner 丁振荣
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