A DC motor parallel control system and current following control method

A DC motor and control system technology, applied in the direction of DC motor speed/torque control, control system, and control of multiple DC motors, can solve problems such as increased cost, programming difficulties, and complicated equipment connections, and achieve current response speed Fast, excellent control accuracy and stability, superior effect of real-time control performance

Active Publication Date: 2022-04-29
SUZHOU BONRAY MEASURE & CONTROL EQUIP
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AI Technical Summary

Problems solved by technology

This method of connecting multiple controllers to drive multiple motors is not only difficult to program, complicated to connect equipment, but also greatly increases the cost

Method used

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  • A DC motor parallel control system and current following control method
  • A DC motor parallel control system and current following control method
  • A DC motor parallel control system and current following control method

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Embodiment Construction

[0047] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0048] see figure 1 , the present invention provides a DC motor parallel control system, comprising:

[0049] Speed ​​adjustment module: adjust the difference between the reference speed and the actual speed.

[0050] Reference current calculation module: use the output signals of the five speed regulation modules to calculate six r...

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Abstract

The invention discloses a DC motor parallel control system and a current following control method. The difference between a given reference speed and an actual speed is passed through five PI regulators to obtain a reference initial current; the reference initial current is reconstructed through a reference current calculation module Obtain the required reference current value; pass the current value at the output terminal of the six-phase voltage source inverter through the current reconstruction calculation module to obtain the calculated current value; give the difference between the calculated current value and the reference current value to the hysteresis comparator In the process, a square wave signal with equal amplitude and different width is generated; the square wave signal is converted into a switching signal for driving the IGBT tube through the PWM module; the PWM signal is transmitted to the six-phase voltage source inverter module, and the six-phase voltage source type The inverter module controls the normal operation of the five DC motors to realize the four-quadrant operation of the motors. The invention provides a novel motor control method by adopting reference current reconstruction, current reconstruction and hysteresis comparison techniques.

Description

technical field [0001] The invention belongs to the technical field of DC motor control, and in particular relates to a DC motor parallel control system and a current following control method. Background technique [0002] Motor energy consumption currently accounts for a relatively high proportion of global electricity consumption. For motor control systems, the energy consumption of the motor depends on the motor and transmission efficiency. Therefore, people have been constantly exploring and striving to reduce the consumption of the motor, improve the transmission efficiency and improve the performance. Therefore, the motor system needs a more efficient control design. For modern powertrains, control accuracy, scalability, peripheral control, system data and design security, functional safety and reliability are all key points in the design. In addition, without affecting the control performance, the motor can achieve precise control and synchronous control, which is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/68H02P7/28
CPCH02P5/68H02P7/2815
Inventor 李伟华王炜罗黎明赵国璋马义波董建威赵宇
Owner SUZHOU BONRAY MEASURE & CONTROL EQUIP
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