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Efficient tricycle driving system

A drive system and tricycle technology, which is applied in the direction of connection with control/drive circuits, bicycles, motor vehicles, etc., can solve the problems of low motor work efficiency, high failure rate of tricycles, poor speed-up performance, etc., and achieves compact structure, light weight, The effect of not easy to demagnetize

Active Publication Date: 2020-12-15
WUXI SINE POWER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the driving technology adopted by the tricycle has been using the traditional motor driving technology, and there has been almost no disclosure of the innovative driving technology of the tricycle. Specifically, the Hall sensor installed on the winding is used to detect the rotor position. Driven by square wave control, among them, the structure of the Hall sensor is prone to damage after being used for a long time in the heat-generating environment of the winding, resulting in a high failure rate of the tricycle. At the same time, the existing control method has poor speed-up performance and motor work efficiency low cost high
[0003] The applicant also noticed that the tricycle usually needs to have better loading capacity, and also has the function of using the two-wheeled vehicle, and its applied load range is very wide. Therefore, when the tricycle is used, due to its corresponding load range And uncertain, so the required tricycle motor needs to have excellent speed-up performance when driving. The existing tricycle drive control scheme has been relatively backward compared with the technological development in recent years.

Method used

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  • Efficient tricycle driving system
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  • Efficient tricycle driving system

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Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1: This embodiment proposes a low failure rate tricycle drive system, including a motor 1 on a tricycle frame (using a known tricycle structure) and a driver for controlling the driving operation of the motor 1. The motor 1 includes a motor mounted on the motor The encoder 2 on the shaft 11 can significantly reduce the failure rate; the communication connection between the encoder 2 and the driver, the encoder 2 sends the detected rotor position signal to the driver, and the driver performs sine wave drive control on the motor based on the rotor position signal , can significantly improve the driving precision of the tricycle driving system and realize fine control; see figure 1 As shown, the control steps of the present embodiment include:

[0041] S10), after the driver receives the real-time signal of the rotor position output from the encoder 2, the real-time signal of the rotor position is filtered, and the current angle value ThetViL1 is set;

[0042]S...

Embodiment 2

[0053] Embodiment 2: On the basis of the tricycle drive system proposed in Embodiment 1, this embodiment 2 further proposes a self-calibration control method for the encoder 2. The encoder 2 uses an inductive position encoder for real-time detection of the rotor position signal; Before motor 1 is used, encoder 2 performs self-calibration control in advance, among which, please refer to Figure 6 As shown, the operation steps of the self-calibration control include:

[0054] A10), power on the motor 1 with the encoder 2 installed, the motor 1 is in a stable state of constant speed rotation by external force, preferably, in this step A10), the range of rotation speed of the motor 1 is set to its normal driving time 20-80% of rated speed;

[0055] A20), adjust the original sine-cosine signal located in the inner induction coil of the encoder 2, and adjust the output amplitude of the encoder based on the original sine-cosine signal, so that the encoder 2 can be set to microsecond...

Embodiment 3

[0059] Embodiment 3: On the basis of Embodiment 1 and Embodiment 2, this embodiment further proposes a high-efficiency tricycle drive system, the motor 1 adopts a salient-pole permanent magnet synchronous motor that is beneficial to field-weakening control, and the stator assembly 12 includes a stator core (not shown in the figure) and winding (not shown in the figure), the rotor assembly 13 includes the rotor iron core 13b and the permanent magnetic steel 13a; through the field weakening control to the salient pole permanent magnet synchronous motor, its speed regulation range is improved, and at the same time, the Increase the number of coil turns of a single winding to increase the torque of the salient pole permanent magnet synchronous motor. In this embodiment, the speed regulation range of the salient pole permanent magnet synchronous motor is 0-2000 rpm;

[0060] Preferably, in this embodiment, please refer to Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown...

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Abstract

The invention discloses an efficient tricycle driving system which comprises a motor on a tricycle frame and a driver used for controlling the motor to drive and operate, the motor adopts a salient pole permanent magnet synchronous motor beneficial to flux weakening control and comprises a stator assembly and a rotor assembly which are in electromagnetic induction connection, and the stator assembly comprises a stator iron core and a winding. The rotor assembly comprises a rotor iron core and permanent magnet steel. The speed regulation range of the salient pole permanent magnet synchronous motor is improved through flux weakening control of the salient-pole permanent magnet synchronous motor, and meanwhile, the torque of the salient pole permanent magnet synchronous motor is improved by increasing the number of turns of a coil of a single winding; and the invention has the advantages of wide speed regulation range, compact structure, light weight, high position precision, large torqueand the like.

Description

technical field [0001] The invention belongs to the drive control technology of electric vehicles, and in particular relates to a high-efficiency tricycle drive system. Background technique [0002] Due to its better loading capacity, tricycles have their own specific advantages over two-wheeled vehicles, so they have a greater market application demand. However, the driving technology adopted by the tricycle has been using the traditional motor driving technology, and there is almost no real innovation of the driving technology of the tricycle. Driven by square wave control, among them, the structure of the Hall sensor is prone to damage after being used for a long time in the heat-generating environment of the winding, resulting in a high failure rate of the tricycle. At the same time, the existing control method has poor speed-up performance and motor work efficiency Low, high cost. [0003] The applicant also noticed that tricycles usually need to have a good loading c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/28H02K1/27H02K11/33H05K7/20B62K5/027
CPCH02K1/28H02K1/274H02K11/33H05K7/209B62K5/027
Inventor 王伟王庆花为李玉刚刘亚军周建华周维卜言柱胡宜豹刘竹园李升程兴张力胡金龙
Owner WUXI SINE POWER TECH CO LTD
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