CN112751518A

CN112751518A - High-density large-torque hub motor controller system

Info

Publication number: CN112751518A
Application number: CN201910983664.7A
Authority: CN
Inventors: 张湃; 杨书林; 朱亦玮; 徐立增; 王伟雄
Original assignee: Teku Electronic Equipment Shanghai Co ltd
Current assignee: Teku Electronic Equipment Shanghai Co ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2021-05-04

Abstract

The invention provides a high-density large-torque hub motor controller system, which belongs to the technical field of motor controller systems and comprises a controller, an isolation driver, a module insulated gate bipolar transistor, a digital processing chip DSP, a logic processing chip FPGA and the like, wherein the digital processing module outputs a pulse width modulation signal (PWM) to be connected with a logic processing unit (FPGA), the logic processing unit (FPGA) is connected with an isolation driving unit, and the output end of the isolation driver is connected with the upper bridging position and the lower bridging position of the module insulated gate bipolar transistor. The logic processing unit solves the problem that the number of pulse width modulation signals output by the digital processing module is limited, and in a product for controlling a plurality of groups of hub motors, more Pulse Width Modulation (PWM) signals are expanded by the logic processing unit, and meanwhile, the complexity and the control precision of a control system are greatly optimized, so that higher control precision and real-time performance are achieved in the actual running process of an automobile; the problem of be difficult to reach higher control accuracy and real-time in the car actual operation process is solved.

Description

High-density large-torque hub motor controller system

Technical Field

The invention relates to the technical field of motor controller systems, in particular to a high-density large-torque hub motor controller system.

Background

The existing high-density large-torque hub motor controller system is characterized in that a clutch, a transmission shaft, a differential mechanism and a transfer case are indispensable to the existing traditional vehicle, the parts are not light in weight and enable the structure of the vehicle to be more complex, meanwhile, the problems of need of regular maintenance and failure rate exist, the hub motor driving system of the electric vehicle receives electric energy output by a storage battery, the electric energy is converted into mechanical energy, an output shaft of a motor is used as a driving shaft, power is transmitted to wheels, and the electric vehicle is driven to run. Because each wheel must be coordinately controlled according to the motion rule of the automobile, the control system is very complex, the technical difficulty is high, and high control precision and real-time performance are not easy to achieve in the actual operation process of the automobile, so that great optimization is provided on the complexity and control precision of the control system, and the control precision and real-time performance are high in the actual operation process of the automobile, so that the problems are solved.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a high-density high-torque hub motor controller system.

In order to achieve the purpose, the invention adopts the following technical scheme: high density high torque in-wheel motor controller system characterized in that this controller system includes: the device comprises a controller, an isolation driver, a module insulated gate bipolar transistor, a digital processing chip DSP, a logic processing chip FPGA and the like, wherein the digital processing module outputs a pulse width modulation signal (PWM) to be connected with a logic processing unit (FPGA), the logic processing unit (FPGA) is connected with an isolation driving unit, and the output end of the isolation driver is connected with the upper bridging position and the lower bridging position of the module insulated gate bipolar transistor.

Preferably, the output end of the isolation driver respectively controls pulse width modulation signals PWM of an upper bridge and a lower bridge of a modular insulated gate bipolar transistor, and outputs the pulse width modulation signals PWM with the amplitude of 400V to drive the in-wheel motor

Preferably, the digital processing chip DSP and the logic processing chip FPGA form a full digital control circuit.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the invention greatly improves the efficiency of motor driving, which directly influences the efficiency of the electric automobile, collects the voltage signal of a voltage sampling resistor in a controller circuit, performs primary amplification through an amplifier, amplifies the voltage signal through a secondary amplifier, and finally obtains a readable voltage signal about 1.65V, compares the voltage signal with a reference voltage to judge whether the voltage is in a normal operation state, and greatly optimizes the complexity and control precision of a control system, thereby achieving higher control precision and real-time performance in the actual operation process of the automobile.

Drawings

Fig. 1 is a schematic system configuration according to an embodiment of the present invention.

Detailed Description

The following describes a detailed embodiment of the present invention with reference to the accompanying drawings.

Referring to fig. 1, a high-density high-torque in-wheel motor controller system is characterized in that the controller system comprises: the driver, the module insulated gate bipolar transistor, the servo motor U _ PHASE, the signal driving motor, the resistor, the digital processing chip DSP, the logic processing chip FPGA, the membrane capacitor and the laminated busbar, wherein the output end of the driver is connected with the upper bridge position and the lower bridge position of the module insulated gate bipolar transistor, the input end of the servo motor U _ PHASE is connected with the output end of the driver, the input end of the signal driving motor is connected with the output end of the servo motor U _ PHASE, the input end of the resistor is electrically connected with the output end of the driver, the digital processing chip DSP and the logic processing chip FPGA are connected in parallel inside the driver, the digital processing chip DSP and the logic processing chip FPGA are both electrically connected with the output end of the driver, the membrane capacitor and the laminated busbar are electrically connected with the output end of the driver, the motor controller system uses the driver to control the insulated gate bipolar transistor of the IGBT module, the output end of the driver, the servo motor U _ PHASE outputs a PWM signal with the amplitude of 400V through a driver to drive the motor, the driver outputs PWM signals for respectively controlling an upper bridge and a lower bridge of an insulated gate bipolar transistor, and the insulated gate bipolar transistor circularly controls the conduction of the upper bridge and the lower bridge in the servo motor U _ PHASE according to the PWM signals after receiving the PWM signals, so that the servo motor U _ PHASE outputs the PWM signal with the amplitude of 400V to drive the motor (the rest W is the same as the V PHASE and the U PHASE);

in this embodiment, as shown in fig. 1, the driver is based on a controller system, and the driver samples voltage signals at two ends of resistors R19 and R20, collects voltage signals at two ends of current sampling resistors R19 and R20 in the driving circuit, performs primary amplification through AMC1301 DWVR to obtain VOUTP _ U, amplifies the voltage signal through OPA320AI DBRV and increases 1.65V to obtain a readable current signal I _ U, and compares the I _ U signal with a reference voltage through TLC372 to determine whether the current is in a normal operating state;

in this embodiment, as shown in fig. 1, a digital processing chip DSP and a logic processing chip FPGA form a full digital control circuit, which can implement a complex control scheme and control strategy. The DSP is responsible for executing a complex control algorithm aiming at motor control and outputting a pulse width modulation signal PWM. Because the number of pulse width modulation signals needed for controlling a plurality of groups of hub motors is more, and a digital processing chip DSP cannot meet the requirement, a logic processing chip FPGA is needed for expansion.

The device selection at control system selects membrane capacitance and stromatolite female arranging to be multilayer composite construction connecting row simultaneously, compares in traditional electrolytic capacitor, adopts novel low inductance, high frequency heavy current membrane capacitance can effectively reduce driver volume and weight, also can improve the driver life-span simultaneously, adopts novel membrane capacitance and the female technique of arranging of stromatolite to not only promote original system electrical property, can effectively reduce motor drive for the electric motor car direct current side capacitance capacity and volume moreover, greatly improved driver power density, improved the driver life-span simultaneously.

The instrument used in the invention comprises:

the driver is KB57HSYT84 model;

the module insulated gate bipolar transistor is of an EGS4002 model;

the servo motor U _ PHASE is of EMH5-130T18.5B25 type;

the signal driving motor is SST42D 2070;

the sampling resistor is 0.25W-5W type;

the DSP is a DSP model;

the logic processing chip FPGA is of an FPGA model;

the film capacitor and the laminated busbar are 104k275v type.

The above embodiments are described in detail for the purpose of further illustrating the present invention and should not be construed as limiting the scope of the present invention, and the skilled engineer can make insubstantial modifications and variations of the present invention based on the above disclosure.

Claims

1. A high density high torque in-wheel motor controller system, the controller system comprising: the device comprises a controller, an isolation driver, a module insulated gate bipolar transistor, a digital processing chip DSP, a logic processing chip FPGA and the like, wherein the digital processing module outputs a pulse width modulation signal (PWM) to be connected with a logic processing unit (FPGA), the logic processing unit (FPGA) is connected with an isolation driving unit, and the output end of the isolation driver is connected with the upper bridging position and the lower bridging position of the module insulated gate bipolar transistor.

2. The high density high torque in-wheel motor controller system of claim 1 wherein: the output end of the driver respectively controls pulse width modulation signal PWM of an upper bridge and a lower bridge of the modular insulated gate bipolar transistor, and the control system controls the modular insulated gate bipolar transistor through the driver, so that the pulse width modulation signal PWM with the amplitude of 400V is output to drive the hub motor.

3. The high density high torque in-wheel motor controller system of claim 1 wherein: the controller system is characterized in that a driver collects a phase voltage signal of the hub motor through a sampling resistor.

4. The high density high torque in-wheel motor controller system of claim 1 wherein: the digital processing chip DSP and the logic processing chip FPGA form a full digital control circuit.