Electronic commutation series excited direct-current motor four-quadrant operation control device and method

A series-excited DC, electronic commutation technology, applied in electronic commutation motor control, electronic commutator, single motor speed/torque control, etc., can solve problems such as reduced motor performance, commutation failure, ring fire, etc. To achieve the effect of reducing operating performance, low cost, reasonable and simple structure

Inactive Publication Date: 2015-12-30
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The internal commutator of the traditional structure series motor is prone to commutation failure and ring fire when the current is too large; the permanent magnet provides the excitation magnetic fie

Method used

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  • Electronic commutation series excited direct-current motor four-quadrant operation control device and method
  • Electronic commutation series excited direct-current motor four-quadrant operation control device and method
  • Electronic commutation series excited direct-current motor four-quadrant operation control device and method

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Example Embodiment

[0029] The technical solution of the present invention will be described in detail below.

[0030] like figure 1 As shown, the armature winding of the electronically commutated series-excited DC motor adopts a three-phase star connection and is installed on the stator; the excitation winding is a wire-wound type and is installed on the rotor; The pivot winding is connected in series and supplies power to the field winding.

[0031] The scheme one electronically commutated series excitation DC motor control device is equipped with a rectification and inverter three-phase bridge circuit composed of six semiconductor switching elements M1, M2, M3, M4, M5, M6, a local control unit, and a drive Circuit, the drive circuit is a gate drive circuit, a diode D, electronically commutated series excitation DC motor control topology such as figure 2 shown. The common terminals of the three lower arms of the rectification and inverter three-phase bridge circuit are connected to the batt...

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Abstract

The invention provides an electronic commutation series excited direct-current motor four-quadrant operation control device and method capable of achieving the control objectives such as electronic commutation, speed regulation and feedback power generation of an electronic commutation series excited direct-current motor. The device comprises a rectifier and inverter three-phase bridge circuit formed by semiconductor switching elements, a diode, a local control unit, a driving circuit and a position sensor. The local control unit determines the position of a motor rotor through the position sensor and selectively controls two of six switching tubes in a rectifier and inverter bridge to serve as a power supply switch pair to supply power to two phases in a motor three-phase winding, and driving and voltage and speed regulation of the electronic commutation series excited direct-current motor can be achieved by changing the duty ratio of the power supply switch pair. According to the device and method, the structure is reasonable and simple, the method is advanced, the control functions such as quick commutation and feedback power generation can be achieved, the size is small, cost is low, and a positive effect is achieved for application and popularization of the series excited motor.

Description

technical field [0001] The invention discloses a four-quadrant operation control device for an electronically commutated series-excited direct-current motor and a method thereof, belonging to the field of direct-current brushed motor control, in particular to the field of series-excited direct-current motor control. Background technique [0002] Series excited DC motors are widely used in industrial and agricultural production because of their advantages such as large starting torque and strong overload capacity. The internal commutator of the traditional structure series motor is prone to commutation failure and ring fire when the current is too large; the permanent magnet provides the excitation magnetic field for the brushless DC motor, and it is prone to loss of magnetism after experiencing overload, overtemperature and vibration phenomenon, and these phenomena will reduce the performance of the motor. Contents of the invention [0003] The purpose of the present inve...

Claims

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Application Information

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IPC IPC(8): H02P6/08H02P6/16H02P6/00
Inventor 莫岳平吴松
Owner YANGZHOU UNIV
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