A kind of DC speed controller of series excitation motor
A technology of series-excited motors and DC speed regulation, applied in the direction of DC motor speed/torque control, electrical components, control systems, etc., can solve the problems of DC motors working in the second and fourth quadrants, and achieve simple structure and improved performance. The effect of using time and improving mileage
Active Publication Date: 2018-01-16
沈阳辽通电气有限公司
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Problems solved by technology
[0003] The present invention proposes a series-excited motor DC governor, which solves the disadvantage that the existing DC motor cannot work in the second and fourth quadrants in the series-excited mode, and realizes the steering control of the motor by means of an electronic switch. The structure of the DC governor is simple and stable, so that the series excitation motor has separate excitation characteristics
Method used
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Embodiment Construction
[0033] according to Figure 1 to Figure 12 A specific structure of the present invention will be described. The series-excited motor DC speed controller of the present embodiment has a structure such as figure 1 As shown, it includes the speed control handle and reversing handle located outside the housing, and the power module 10, main circuit module 2, control module 1, IGBT drive circuit 3, excitation module, and armature module packaged inside the DC speed governor and battery 11 .
[0034] The description of each module is as follows:
[0035] The power supply module 10 is used to supply power to the control module 1 , the excitation module (eg, the excitation module 4 , the excitation module 6 ), and the armature module (eg, the armature module 5 , the armature module 7 ) in the main circuit module 2 .
[0036] The main circuit module 2 controls the forward rotation or reverse rotation of the motor of the DC speed controller by turning on or off the 8 IGBTs in the mai...
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The utility model relates to a DC speed regulator of a series-excited motor, which relates to the technical field of motor speed regulation and control. It includes an excitation module that keeps the motor excitation winding and armature winding connected in series while braking or decelerating, compensates the reduced current in the excitation winding of the series-excited motor, and keeps the magnetic flux in the excitation winding of the motor unchanged. The deceleration and braking of the present invention utilize the characteristics of separate excitation. During separate excitation, the armature winding and the field winding are not separated, but the excitation module ensures that the magnetic flux of the field winding remains unchanged, and the armature winding is controlled solely through the armature module. During the deceleration or braking process of the motor, the energy flows back to the battery through the excitation winding, so that the excitation winding gets an additional part of the magnetic flux, supplementing the magnetic flux generated by the excitation module’s output current on the excitation winding, so that the output current of the excitation module Reduced, without full-load output, reducing the output power consumption of the excitation module, so that the series-excited motor can also work in the second quadrant and the fourth quadrant, so that the series-excited motor has separate excitation characteristics.
Description
technical field [0001] The invention relates to the technical field of speed regulation control of motors, in particular to a DC speed regulator for series-excited motors. Background technique [0002] At present, the driving motors of underground locomotives are mainly DC series-excited motors. This type of motor has the advantages of large starting torque and smooth starting and is widely used in underground DC electric locomotives. Silicon chopper, the brake adopts hard contact switching brake, which is unreliable during the startup process and prone to failure. Once a failure occurs, the whole machine needs to be repaired, which reduces the service life of the DC governor. Due to the inherent characteristics of the DC series motor, it is difficult to control it well without changing its inherent mechanical characteristics. Contents of the invention [0003] The present invention proposes a series-excited motor DC governor, which solves the disadvantage that the existi...
Claims
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IPC IPC(8): H02P7/298
Inventor 范久斌徐明毕鑫潘朝阳周光远徐景海王德政
Owner 沈阳辽通电气有限公司