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Linkage energy-saving control device for common bus servo controller

A servo controller, energy-saving control technology, applied in the field of servo control, can solve the problems of unreasonable use of electric energy, leakage, waste of energy, etc.

Inactive Publication Date: 2013-01-02
SHANGHAI INVT INDUSTRY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in an oil field, there may be multiple pumping units working at the same place. The pumping units are driven by AC servo motors. When working, the working states of the AC servo motors are generally not synchronized. At the same time, some are in the generator state. , some are in the motor state, the current motor control device cannot reasonably use the electric energy output by the AC servo motor when it is in the generator state, and the excess energy can only be discharged through the braking resistor, which not only wastes energy, but also may cause Braking resistor overheating breakdown Braking resistor

Method used

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  • Linkage energy-saving control device for common bus servo controller
  • Linkage energy-saving control device for common bus servo controller
  • Linkage energy-saving control device for common bus servo controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take an oil field as an example: There are multiple pumping units at the same location in the oil field. The pumping units are beam-type, including AC servo motor 1, base 12, fixed frame 13, bracket 14, power distribution box 15, and reducer 16. , Belt 17, brake device 18, crank pin 19, crank 20, beam 21, pin shaft 22, bearing 23, connecting rod 24, walking beam 25, donkey head 26 and suspension rope 27, such as figure 1 As shown, the specific structure is: an AC servo motor 1, a fixing frame 13 and a bracket 14 are sequentially fixed on the base 12, and the AC servo motor 1 is controlled by a servo controller in a power distribution box 15 on one side of the base 12, and a reducer 16 is fixed on the fixed frame 13, the rotating shaft of the AC servo motor 1 is connected to the input shaft of the reducer 16 through a belt 17, a brake device 18 is provided on the reducer 16, and the output shaft of the reducer 16 is connected through a crank pin 19 and a crank 20 , The mid...

Embodiment 2

[0020] A linkage energy-saving control device for a common bus servo controller, including an AC servo motor 1, a servo controller 2, a speed sensor 31, a voltage sensor 32, a master controller 4 and a braking resistor 6, such as image 3 As shown, the specific structure is: the topological relationship of each servo controller 2 communication line 5 connection selects a bus connection, each servo controller 2 is connected through the communication line 5, and then connected to the master controller 4 through the communication line 5. The communication method can be adopted For CAN communication, RS485 communication or Ethernet communication, CAN communication is selected in this embodiment, and the main controller 4 is a microcomputer. Other structures and methods of use are the same as in Example 1.

Embodiment 3

[0022] A linkage energy-saving control device for a common bus servo controller, including an AC servo motor 1, a servo controller 2, a speed sensor 31, a voltage sensor 32, a master controller 4 and a braking resistor 6, such as Figure 4 As shown, the specific structure is: the topological relationship of each servo controller 2 communication line 5 connection selects a ring connection, each servo controller 2 is connected end to end through the communication line 5 in turn, and the master controller 4 is connected to one of the servo controllers. 2; The total controller 4 uses a microcomputer. Other structures and methods of use are the same as in Example 1.

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Abstract

The invention relates to the field of servo control, in particular to a linkage energy-saving control device for a common bus servo controller. The linkage energy-saving control device for the common bus servo controller comprises an alternating current servo motor (1), servo controllers (2), a velocity sensor (31) and a brake resistor (6). The linkage energy-saving control device for the common bus servo controller is characterized in that the device further comprises a voltage transducer (32) and a master controller (4), buses (7) of the servo controllers (2) are mutually connected, communication lines (5) of the servo controllers (2) are mutually connected, the topological relation of the connection of the communication lines (5) of the servo controllers (2) is star connection, bus connection or ring connection, and a microcomputer or a single chip microcomputer is selected as the master controller (4). The rotating speed of the alternating current servo motor which is in a generator state is adjusted, so that the busbar voltage can be indirectly adjusted, and the linkage energy-saving effect can be achieved. The linkage energy-saving control device for the common bus servo controller is simple in structure, rapid in response, accurate in controlling, safe and reliable.

Description

Technical field [0001] The invention relates to the field of servo control, in particular to a linkage energy-saving control device for a common bus servo controller. Background technique [0002] At present, AC servo motors are gradually gaining wide applications. AC servo motors are a type of AC synchronous motors, and servo controllers are usually used to control AC servo motors in real time. When in use, there may be multiple AC servo motors working at the same place at the same time. In order to save costs, the servo controller can adopt a common bus operation mode. When using a common bus operation mode, each servo controller can use a common braking resistor. The AC servo motor is reversible. When it runs in the forward direction, it acts as a motor and converts electrical energy into mechanical energy for output. When it runs in the reverse direction, it acts as a generator to convert mechanical energy into electrical energy for output. For example, in an oil field, the...

Claims

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Application Information

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IPC IPC(8): H02P6/04
Inventor 甄力李铭捷王锴
Owner SHANGHAI INVT INDUSTRY TECHNOLOGY CO LTD
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