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Permanent magnet type direct current motor driving device

A technology of DC motors and driving devices, applied in the direction of electromechanical devices, electric components, DC commutators, etc., can solve problems such as difficult to deal with detection technology, development constraints and influences of permanent magnet DC motors, economic construction and national defense construction, etc.

Pending Publication Date: 2020-06-19
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional permanent magnet DC motors used in high-power national defense electric equipment have been difficult to cope with the increasingly advanced detection technology.
[0006] Based on the above reasons, the development of permanent magnet DC motors has been restricted and affected, which has affected economic construction and national defense construction.

Method used

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  • Permanent magnet type direct current motor driving device
  • Permanent magnet type direct current motor driving device
  • Permanent magnet type direct current motor driving device

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0036]

[0037] figure 1 It is a schematic diagram of the circuit connection of the permanent magnet DC motor driving device of the present invention; figure 2 It is a schematic diagram of the circuit connection of the permanent magnet DC motor driving device in the embodiment of the present invention.

[0038] Such as figure 1 and figure 2 As shown, the permanent magnet DC motor driving device 100 in this embodiment includes a permanent magnet DC motor 10, a chopper 20, a DC power supply 30, a command sending unit (not shown), a sensing unit 40, a controller 50 and drive unit 60 .

[0039] image 3 It is a schematic diagram of a longitudinal section of a permanent magnet DC motor in an embodiment of the present invention; Figure 4 It is a schematic diagram of the circuit connection of the transverse section of the permanent ma...

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Abstract

The invention provides a permanent magnet type direct current motor driving device. The device comprises a permanent magnet direct current motor, a DC power supply, and a chopper, wherein the chopperis provided with m chopping units, each chopping unit comprises an upper bridge arm and a lower bridge arm which are connected in series with each other, the upper bridge arm comprises at least one power switch tube, the lower bridge arm comprises at least one diode, m first power supply output ends of all chopper units and m second power supply output ends of all chopper units respectively and correspondingly form m pairs of power supply output terminals, and output currents of the m pairs of power supply output terminals all contain current ripples. The permanent magnet direct current motorcomprises a casing, m pairs of brushes and a stator; and m first wiring terminals and m second wiring terminals correspondingly form m pairs of external wiring terminals respectively, the m pairs of external wiring terminals are connected with the m pairs of power output terminals in a one-to-one correspondence manner, and m is an integer not smaller than 2.

Description

technical field [0001] The invention belongs to the field of DC motors, in particular to a permanent magnet DC motor drive device. Background technique [0002] The permanent magnet DC motor is a DC motor with a magnetic field composed of one or more permanent magnets. It has the advantages of small size, high efficiency, simple structure, and convenient speed regulation by changing the armature voltage. Therefore, it is widely used in automobiles and motorcycles. , electric bicycles, battery cars, ships and aviation industries. [0003] A DC motor is generally used together with a chopper to form a DC motor speed control device. In order to ensure system reliability, the maximum output current of the chopper is generally 2 to 3 times the rated current of the motor. High-power and high-performance DC motors, especially low-voltage and high-current DC motors, require a chopper with a large continuous working current, and related technologies and products are controlled and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/28H02M3/142H02M3/158H02M1/14H02K1/17H02K13/00H02K5/22H02K23/26
CPCH02P7/28H02P7/29
Inventor 金爱娟李少龙
Owner UNIV OF SHANGHAI FOR SCI & TECH
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