5KW-level permanent magnet synchronous motor driving circuit based on MOSFET

A technology of permanent magnet synchronous motor and drive circuit, which is applied in the direction of electronic commutation motor control, single motor speed/torque control, electrical components, etc. Small size, high temperature rating, and strong anti-interference ability

Inactive Publication Date: 2015-04-29
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The modularization of power circuits can overcome the shortcomings of traditional discrete power electronic converters, such as many interc

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  • 5KW-level permanent magnet synchronous motor driving circuit based on MOSFET

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Example Embodiment

[0012] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0013] Such as figure 1 As shown, a MOSFET-based 5KW permanent magnet synchronous motor drive circuit provided by the present invention includes EMI filter circuit 1, power conversion circuit 2, drive circuit 3, 5V control power conversion circuit 4, voltage detection circuit 5, and current Detection circuit 6, bus surge absorption circuit 7, three-phase full bridge circuit 8, power supply circuit 10. The power supply circuit 10 includes a control power supply 10A, a power power supply 10B, a capacitor C1 and a capacitor C2. The capacitor C1 is connected to one end of the control power supply 10A, and the output end of the control power supply 10A is connected to the input end of the EMI filter circuit 1. The output terminal of the EMI filter circuit 1 is connected with the input terminal of the power conversion circuit 2, an output terminal of the power conve...

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Abstract

The invention belongs to a servo motor driving circuit, and specifically discloses a 5KW-level permanent magnet synchronous motor driving circuit based on an MOSFET. The output end of a power circuit is communicated with the input ends of an EMI filtering circuit and a busbar surge absorption circuit respectively; the output end of the EMI filtering circuit is communicated with the input end of a power conversion circuit; the output end of the power conversion circuit is communicated with the power input end of a driving circuit; the control signal input end of the driving circuit is communicated with the output end of a DSP control module; the output end of the driving circuit is communicated with the input end of a three-phase full-bridge circuit; the output end of the three-phase full-bridge circuit is communicated with the input end of a current detection circuit; the output end of the current detection circuit is communicated with the input end of a control permanent magnet synchronous motor; the feedback end of a current detection circuit is communicated with the feedback end of the DSP control module; the output end of the busbar surge absorption circuit is communicated with the input end of the three-phase full-bridge circuit. The 5KW-level permanent magnet synchronous motor driving circuit has the advantages of high-power density, high integration degree and high reliability.

Description

technical field [0001] The invention belongs to a servo motor drive circuit, in particular to a high-integration, miniaturized, high-reliability, all-digital high-power high-voltage isolation drive circuit. Background technique [0002] Commonly used permanent magnet synchronous servo motor drive circuits are mostly assembled with discrete components. The resistors, capacitors, full-bridge drive circuits, MOSFET tubes, etc. used are all plastic-encapsulated circuits, and the temperature grade is mostly -40°~+85°. Traditional discrete power electronic converters have many interconnection leads between power devices, and have disadvantages such as complex structure, large parasitic inductance, large volume, and poor reliability. They cannot meet user requirements in applications where the operating environment is harsh and the overall requirements are high. [0003] Therefore, it is necessary to design a permanent magnet synchronous servo motor drive circuit that is modular, i...

Claims

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Application Information

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IPC IPC(8): H02P6/08
CPCH02P6/085
Inventor 贾淑绒于志远郑再平黄玉平陈俊杰郭喜彬
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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