CN203883718U - MCU-based switch reluctance motor controller - Google Patents

Abstract

The utility model disclose an MCU-based switch reluctance motor controller which comprises a CAN communication module, an MCU module, a rotary transformer decoding module, a power driving module, a current sensor module, a bus voltage detection module, a braking module and a rectification and filtering module. The controller uses a 32-bit STM32F103 single-chip microcomputer as a master control chip, so that advantages as easy programming, high flexibility and adaptability and convenient upgrading of traditional single-chip microcomputers are maintained while extremely high operation precision and speed as well as the capability of handling a lot of data are provided; a rotary encoder is used for velocity measurement so that the anti-vibration performance is high; and the controller is communicated with a host computer in a CAN communication manner, so that the interference resistance and environmental applicability are high.

Description

A kind of switched reluctance motor controller based on MCU

Technical field

The utility model belongs to electric and electronic technical field, is specifically related to a kind of switched reluctance motor controller based on MCU.

Background technology

Switched reluctance machines speed governing is a kind of novel governing system growing up after DC speed regulation, AC speed regulating, is made up of switched reluctance machines and controller two parts.Motor is rotor double-salient-pole structure, on rotor, without winding and permanent magnet, has concentrated winding on stator, and electric machine structure is simple and reliable.Controller is mainly made up of embedded microprocessor, programmable logic device, peripheral interface circuit, drive circuit and control software.That this governing system has is energy-efficient, speed-regulating range width, starting current are little, starting torque is large, frequently start-stop and rotating switching, high torque (HT)/inertia when can four quadrant running etc. advantage, can provide a good solution for variable speed drives.The utility model has designed the switched reluctance motor controller based on MCU, and this controller can meet the requirement of most of general speed governing occasion performance, and cost is low, easy to utilize.

Summary of the invention

The utility model, for the deficiencies in the prior art, proposes a kind of switched reluctance motor controller based on MCU.

For realizing above object, the technical solution adopted in the utility model is:

A kind of switched reluctance motor controller based on MCU comprises CAN communication module, MCU module, resolver decoder module, power driver module, current sensor module, busbar voltage detection module, brake module and rectification filtering module;

Described CAN communication module adopts the CAN transceiver ISO1050 that carries isolation; Described MCU module adopts 32 STM32F103 single-chip microcomputers; Described resolver decoder module comprises resolver and resolver decoding chip AD2S1205; Described power driver module comprises with the IGBT of overcurrent protection and drives chip A316J, 4 half-bridge IGBT module SKM100GAR123D and 4 half-bridge IGBT module SKM100GAL123D to form the 4 asymmetric bridges in road; Described current sensor module adopts current sensor CSNP661; Described rectification filtering module and busbar voltage detection module form busbar voltage measuring ability; Described rectification filtering module and brake module form discharging function.

4 road PWM output pins of described MCU module drive the signal input tube pin of chip to be connected with the IGBT of power driver module, the overcurrent warning feedback pin of the driving chip of power driver module is connected with the common I/O mouth of MCU module, power driver module input voltage is connected to rectification filtering module, rectification filtering module is connected with the input signal port of busbar voltage detection module, the output signal port of busbar voltage detection module is connected to the common IO mouth of MCU module, the input signal port of brake module is connected to the common IO mouth of MCU module, the output signal port of brake module is connected with rectification filtering module, power driver module Yi road asymmetric bridge output drive signal port is connected with the input pin of current sensor, the current sensor signal output interface of current sensor module is connected with the AD input port of MCU module, power driver module Si road asymmetric bridge output drive signal port is connected with four line bag input pins of switched reluctance machines, the decoding chip signal output interface of resolver decoder module is connected with the common SPI interface of MCU module, in resolver decoder module, measure the rotor-position of switched reluctance machines by resolver, CAN communication module communication interface is connected with the CAN communication interface of MCU module, the button of human-computer interaction interface is connected with the common I/O mouth of MCU module with charactron pin.

The utility model beneficial effect is: the utility model adopts 32 STM32F103 single-chip microcomputers to be used as Master control chip, it kept conventional one-piece machine programming easily, flexibility and the advantage such as adaptability is good, upgrading is convenient; Also there is the ability of very high operational precision, arithmetic speed and processing mass data simultaneously.Meanwhile, the utility model adopts rotary encoder to test the speed, and has freedom from vibration strong, adopts CAN communication mode to communicate by letter with host computer, has strong interference immunity and ambient adaptability good.

Brief description of the drawings

Fig. 1 is schematic block circuit diagram of the present utility model.

Embodiment

As shown in Figure 1, a kind of switched reluctance motor controller based on MCU comprises CAN communication module, MCU module, resolver decoder module, power driver module, current sensor module, busbar voltage detection module, brake module and rectification filtering module;

Described CAN communication module adopts the CAN transceiver ISO1050 that carries isolation; Described MCU module adopts 32 STM32F103 single-chip microcomputers; Described resolver decoder module comprises resolver and resolver decoding chip AD2S1205; Described power driver module comprises with the IGBT of overcurrent protection and drives chip A316J, 4 half-bridge IGBT module SKM100GAR123D and 4 half-bridge IGBT module SKM100GAL123D to form the 4 asymmetric bridges in road; Described current sensor module adopts current sensor CSNP661; Described rectification filtering module and busbar voltage detection module form busbar voltage measuring ability; Described rectification filtering module and brake module form discharging function.

4 road PWM output pins of described MCU module drive the signal input tube pin of chip to be connected with the IGBT of power driver module, the overcurrent warning feedback pin of the driving chip of power driver module is connected with the common I/O mouth of MCU module, power driver module input voltage is connected to rectification filtering module, rectification filtering module is connected with the input signal port of busbar voltage detection module, the output signal port of busbar voltage detection module is connected to the common IO mouth of MCU module, the input signal port of brake module is connected to the common IO mouth of MCU module, the output signal port of brake module is connected with rectification filtering module, power driver module Yi road asymmetric bridge output drive signal port is connected with the input pin of current sensor, the current sensor signal output interface of current sensor module is connected with the AD input port of MCU module, power driver module Si road asymmetric bridge output drive signal port is connected with four line bag input pins of switched reluctance machines, the decoding chip signal output interface of resolver decoder module is connected with the common SPI interface of MCU module, in resolver decoder module, measure the rotor-position of switched reluctance machines by resolver, CAN communication module communication interface is connected with the CAN communication interface of MCU module, the button of human-computer interaction interface is connected with the common I/O mouth of MCU module with charactron pin.

The operation principle of the switched reluctance motor controller based on MCU is as follows:

The rotor-position that MCU elder generation has obtained switched reluctance machines according to resolver drives corresponding motor lines bag energising, motor is constantly rotation forward just, the electric current that flows through line bag by control when low speed can regulate the output torque of motor, when High Rotation Speed by regulating the turn-on angle of motor lines bag and close the angle of rupture moment of torsion and the rotating speed that just can regulate motor.Motor reads the speed of setting and the rotary speed of motor by optical-fibre communications, and automatically to select mode of operation be at low-speed mode or fast mode, under low-speed mode, regulates the output PWM of IGBT to regulate current of electric by PID adjusting program.Under fast mode, regulate the turn-on angle of IGBT and close the angle of rupture by PID adjusting program and regulate motor speed.

Controller is according to the electric current of motor and speed feedback, form electric current loop and speed ring, adopt respectively Integral disconection PID algorithm and increment type PID algorithm, under low speed, electric current is changed to the interior ring as speed ring, at a high speed lower program is by controlling the turn-on angle of IGBT and closing angle of rupture governing speed and moment of torsion, to guarantee the stabilization of speed of motor output.

Claims (1)

1. the switched reluctance motor controller based on MCU, comprises CAN communication module, MCU module, resolver decoder module, power driver module, current sensor module, busbar voltage detection module, brake module and rectification filtering module;

It is characterized in that: 4 road PWM output pins of described MCU module drive the signal input tube pin of chip to be connected with the IGBT of power driver module, the overcurrent warning feedback pin of the driving chip of power driver module is connected with the common I/O mouth of MCU module, power driver module input voltage is connected to rectification filtering module, rectification filtering module is connected with the input signal port of busbar voltage detection module, the output signal port of busbar voltage detection module is connected to the common IO mouth of MCU module, the input signal port of brake module is connected to the common IO mouth of MCU module, the output signal port of brake module is connected with rectification filtering module, power driver module Yi road asymmetric bridge output drive signal port is connected with the input pin of current sensor, the current sensor signal output interface of current sensor module is connected with the AD input port of MCU module, power driver module Si road asymmetric bridge output drive signal port is connected with four line bag input pins of switched reluctance machines, the decoding chip signal output interface of resolver decoder module is connected with the common SPI interface of MCU module, in resolver decoder module, measure the rotor-position of switched reluctance machines by resolver, CAN communication module communication interface is connected with the CAN communication interface of MCU module, the button of human-computer interaction interface is connected with the common I/O mouth of MCU module with charactron pin,

Described CAN communication module adopts the CAN transceiver ISO1050 that carries isolation; Described MCU module adopts 32 STM32F103 single-chip microcomputers; Described resolver decoder module comprises resolver and resolver decoding chip AD2S1205; Described power driver module comprises with the IGBT of overcurrent protection and drives chip A316J, 4 half-bridge IGBT module SKM100GAR123D and 4 half-bridge IGBT module SKM100GAL123D to form the 4 asymmetric bridges in road; Described current sensor module adopts current sensor CSNP661; Described rectification filtering module and busbar voltage detection module form busbar voltage measuring ability; Described rectification filtering module and brake module form discharging function.