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High-power energy-saving speed regulating system and method of differential planet gear in parallel connection with four-quadrant motor

A planetary gear and speed control system technology, applied in the field of speed control systems, can solve problems such as the limitation of speed control range, and achieve the effect of fast braking of loads

Active Publication Date: 2018-01-16
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, hydraulic speed regulation and permanent magnet speed regulation are stepless speed regulation systems, but there are slip losses
Planetary gear speed regulation is stepped speed regulation, and the speed regulation range is limited

Method used

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  • High-power energy-saving speed regulating system and method of differential planet gear in parallel connection with four-quadrant motor
  • High-power energy-saving speed regulating system and method of differential planet gear in parallel connection with four-quadrant motor
  • High-power energy-saving speed regulating system and method of differential planet gear in parallel connection with four-quadrant motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as figure 1 As shown, a differential planetary gear parallel four-quadrant motor high-power energy-saving speed regulation system includes a differential planetary gear 1 , a four-quadrant motor 2 , a four-quadrant inverter 3 , a drive motor 4 and a load 5 .

[0049] Such as figure 2 As shown, the differential planetary gear includes a driving shaft 11 , a driving bevel gear 12 , a differential internal bevel gear set, a driven bevel gear 14 , a driven shaft 15 and a differential external gear 16 .

[0050] The differential internal bevel gear set includes several internal bevel gears 13, such as image 3 As shown, each internal bevel gear is preferably arranged on the inner peripheral surface of the differential external gear through the connecting rod 17, and each internal bevel gear can realize self-rotation with the connecting rod as the rotation axis.

[0051] Each internal bevel gear meshes with a driving bevel gear and a passive bevel gear.

[0052] The ...

Embodiment 2

[0068] Such as Figure 4 and Figure 5 As shown, the above-mentioned differential external gear is a tapered differential external bevel gear 18, the motor gear is a tapered motor bevel gear 22, and the rest are the same as in Embodiment 1.

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PUM

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Abstract

The invention discloses a high-power energy-saving speed regulating system and method of a differential planet gear in parallel connection with a four-quadrant motor. The system comprises the differential planet gear, the four-quadrant motor, a four-quadrant inverter, a driving motor and a load; the differential planet gear comprises a drive bevel gear, a differential inner bevel gear set, a driven bevel gear and a differential outer gear; the differential inner bevel gear set comprises multiple inner bevel gears, and each inner bevel gear is arranged on the inner circumference of the differential outer gear; each inner bevel gear is meshed with the drive bevel gear and the driven bevel gear; the drive bevel gear is connected with the driving motor, and the driven bevel gear is connected with the load; the differential outer bevel gear is meshed with a motor gear in the four-quadrant motor; one end of the four-quadrant inverter is connected with the four-quadrant motor, a power networkis connected with the other end of the four-quadrant inverter, and the power network is further connected with the driving motor. The high-power energy-saving speed regulating system and method of the differential planet gear in parallel connection with the four-quadrant motor have no slip loss and can achieve speed increasing, reducing and regulating, rapid braking of the load and standby functions under the fault state of the driving motor.

Description

technical field [0001] The invention relates to a speed regulation system and method, in particular to a high-power energy-saving speed regulation system and method of a differential planetary gear parallel four-quadrant motor. Background technique [0002] Existing energy-saving speed regulation systems mainly include frequency conversion speed regulation, liquid couple speed regulation, permanent magnet speed regulation and planetary gear speed regulation. However, the above-mentioned speed control system also has the following problems: [0003] 1. Frequency conversion speed regulation is electronic speed regulation, which has high requirements on the environment, and the cost is relatively high in high-power (MW level) transmission systems. [0004] 2. Liquid couple speed regulation is hydraulic speed regulation, which is similar to permanent magnet speed regulation and planetary gear speed regulation, and both belong to transmission system speed regulation. Among them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H48/08F16H61/12H02P23/06
Inventor 金平焦蔚然高赫刘丽凌洁瑶周柳清
Owner HOHAI UNIV