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A precise current control method for switched reluctance motors using two-dimensional current chopping

A switched reluctance motor, current chopping technology, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems of vibration and noise, and achieve the effect of good combined torque, excellent system performance, and improvement effect.

Active Publication Date: 2018-02-09
CHONGQING XINYIXIN TECH CO LTD
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AI Technical Summary

Problems solved by technology

Many existing technical solutions still use traditional motor control methods and technologies to control the switched reluctance motor, resulting in the disadvantages of the switched reluctance motor drive system that are not easy to overcome, and the vibration and noise are relatively large

Method used

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  • A precise current control method for switched reluctance motors using two-dimensional current chopping
  • A precise current control method for switched reluctance motors using two-dimensional current chopping
  • A precise current control method for switched reluctance motors using two-dimensional current chopping

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0023] a kind of like Figure 1-Figure 3 The switched reluctance motor uses a precise current control method of two-dimensional current chopping, which includes the following steps:

[0024] S1. Establish a standard database for the characteristics of the switched reluctance motor, including:

[0025] The database A is composed of the rotor speed, the rotor position when each commutation is turned on and off at each rotor speed, and the constant upper and lower limits of the current during the turn-on and turn-off periods of each phase coil;

[0026] The database B is composed of the upper and lower limit correction values ​​of the current during the on and off periods of each phase coil at each rotor speed in the database A;

[0027] S2. Running the switched reluctance motor, the sensor monitors the rotor position and the current contr...

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Abstract

The invention discloses a precise current control method using two-dimensional current chopping for a switched reluctance motor. The current control method is to calculate the current instantaneous speed of the rotor through the position information of the rotor; Database A and database B combine the upper and lower limit curve values ​​"I limit" during the on and off period of each phase current of the motor and temporarily store it in the memory; the core processing unit performs continuous current sampling through A / D, operates the power topology unit, Make the change of the phase current of the motor, during the current on and off of each phase, all within the range of "I limit". Based on the high-performance core processing unit or high-performance core processor, the invention realizes more accurate and efficient motor current control, and then achieves better synthetic torque to achieve more excellent system performance, especially at low speeds. Pulsation and noise, there is a significant improvement effect.

Description

technical field [0001] The invention relates to a precise current control method for a switched reluctance motor using two-dimensional current chopping, and belongs to the technical field of switched reluctance motors. Background technique [0002] Switched reluctance motor is the latest generation of stepless speed regulation system developed after frequency conversion speed regulation system and brushless DC motor speed regulation system. It integrates modern microelectronic technology, digital technology, power electronics technology, infrared photoelectric technology and modern electromagnetic technology. It is a high-tech technology integrating light, machine and electricity with the integration of theory, design and production technology. It has the advantages of both DC and AC speed control systems in the speed control system, and can be widely used in household appliances, aviation, aerospace, electronics, machinery and electric vehicles and other fields. [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P25/08
Inventor 王洪新郑荣藩刘新
Owner CHONGQING XINYIXIN TECH CO LTD
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