Simulation method and system for twelve-phase brushless direct current motor

A brushed DC motor and simulation method technology, applied in the field of simulation, can solve the problems that the performance can not meet the needs, the motor control is complex, and can not be achieved.

Inactive Publication Date: 2018-09-14
覃世英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the advancement of motor technology, the performance of the currently used three-phase brushless DC motor has gradually failed to meet the needs. In order to make the motor enter the steady state earlier, the response speed is faster, and the fluctuation is smaller. We propose a twelve-phase motor. Brushless DC motor, but because the 12-phase b

Method used

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  • Simulation method and system for twelve-phase brushless direct current motor
  • Simulation method and system for twelve-phase brushless direct current motor
  • Simulation method and system for twelve-phase brushless direct current motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] like figure 1 As shown, this embodiment provides a twelve-phase brushless DC motor simulation method, which is applied to simulation software, including:

[0066] Step S1: Set the initial parameters of the motor, and set the reference speed of the motor;

[0067] Step S2: Calculate the phase current, electromagnetic torque and motor speed of each phase of the stator winding according to the initial parameters of the motor;

[0068] Step S3: Obtain the rotor position of the motor, and calculate the stator winding reference current of each phase according to the motor speed, the reference speed and the rotor position of the motor;

[0069] Step S4: Obtain the PWM control signal according to the reference current of the stator winding of each phase and the phase current of the stator winding of each phase;

[0070] Step S5: Control the ground voltage of each phase stator winding according to the PWM control signal, calculate the phase current, electromagnetic torque and ...

Embodiment 2

[0115] like Figure 7 As shown, this embodiment provides a twelve-phase brushless DC motor simulation system, which can be simulated by the simulation method provided in Embodiment 1, including:

[0116] Motor main module: used to calculate the motor stator winding phase current, electromagnetic torque and motor speed according to the motor parameters, and connect with the reference current controller module and the current hysteresis controller module respectively through the position detection module and the current detection module. It is used to feed back the motor speed to the reference current controller module, and is also used to transmit the stator winding phase current, electromagnetic torque and motor speed to the oscilloscope module, wherein the position detection module is used to transmit the obtained motor rotor position to the reference The current controller module, the current detection module is used to transmit the acquired phase current of each phase of th...

Embodiment 3

[0131] This embodiment further describes the modules involved in Embodiment 2 in conjunction with specific packaging forms in the simulation software.

[0132] like Figure 8 As shown, it is a simulation schematic diagram of the main module of the motor. The main module includes a motor body module, a torque measurement module and a speed measurement module. and i3abc represent); torque measurement module: used to calculate the electromagnetic torque of the motor (represented by Te in the figure); speed measurement module: used to calculate the angular velocity of the motor (represented by n in the figure); in addition, TL is Load torque, ua, ub, uc, ua1, ub1, uc1, ua2, ub2, uc2, ua3, ub3 and uc3 are the twelve-phase stator winding voltage to ground respectively, Pos is the position of the rotor, eabc, e1abc, e2abc and e3abc are the counter electromotive force of the twelve-phase stator windings.

[0133] like Figure 9 As shown, taking the stator winding I as an example, t...

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Abstract

The invention discloses a simulation method for a twelve-phase brushless direct current motor. The method comprises the following steps: setting initial parameters of the motor and setting reference rotation speed of the motor; calculating phase current, electromagnetic torque and motor speed of each phase stator winding according to the initial parameters of the motor; acquiring the rotor position of the motor, and calculating the reference current of each phase stator winding according to motor rotating speed, reference rotating speed and rotor position of the motor; obtaining a PWM controlsignal according to the reference current of each phase stator winding and the phase current of each phase stator winding; controlling the ground voltage of each phase stator winding according to thePWM control signal, and recalculating the phase current, electromagnetic torque and motor speed of each phase stator winding; obtaining the phase current waveform, electromagnetic torque waveform andmotor speed waveform of each phase stator winding. The twelve-phase brushless direct current motor is simulated on a simulation platform by simulation software, and waveform simulation and adjustmentof the motor parameters can be better conducted until the required waveforms are obtained, so that the motor parameters meet the motor performance.

Description

technical field [0001] The invention relates to the simulation field, in particular to a twelve-phase brushless DC motor simulation method and system. Background technique [0002] With the advancement of motor technology, the performance of the currently used three-phase brushless DC motor has gradually failed to meet the needs. In order to make the motor enter the steady state earlier, the response speed is faster, and the fluctuation is smaller. We propose a twelve-phase motor. Brushless DC motor, but because the 12-phase brushless DC motor involves many parameters and the motor control is complicated, if the produced product is not suitable for the parameter setting, it will not only fail to achieve the effect we want, but also waste a lot of energy. Manpower and material resources, therefore, the current twelve-phase brushless DC motor is still in the conceptual stage. [0003] In view of the above situation, it is urgent to design a set of effective verification and a...

Claims

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Application Information

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IPC IPC(8): H02P6/34
CPCH02P6/34
Inventor 覃世英
Owner 覃世英
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