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DSP-based frequency converter regenerative braking device

A technology of regenerative braking and inverter, which is applied in the direction of motor/generator/inverter limiter, control system, motor generator control, etc. It can solve the problems of wasting electric energy and poor fast braking performance, and achieves a simple structure. Effect

Inactive Publication Date: 2015-03-25
刘铮
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002]At present, simple energy-consuming braking is widely used in AC frequency conversion speed regulation systems, which has the disadvantages of wasting electric energy and poor fast braking performance.

Method used

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  • DSP-based frequency converter regenerative braking device

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Embodiment Construction

[0013] As shown in the figure, the present invention includes a CPU and peripheral circuits. The peripheral circuits include a clock circuit and a reset circuit, and also include a signal detection and conditioning circuit, a drive circuit, and a protection circuit; The zero-crossing signal is input to the main control system CPU after the signal detection and conditioning circuit, so that the DSP can complete the entire control system.

[0014] Described CPU adopts TMS320LF407 chip.

[0015] For the convenience of debugging, the control system also expands a 16-bit RAM chip as a program memory. The driving circuit plays the role of improving the driving ability and isolation of the pulse. The protection logic circuit ensures that the system can directly block the output pulse signal from the hardware when a fault occurs.

[0016] System software design.

[0017] Digital sampling, A / D conversion and control algorithm are realized by means of interruption, and the ...

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Abstract

The invention relates to a DSP-based frequency converter regenerative braking device. The DSP-based frequency converter regenerative braking device is an improved DSP-based frequency converter regenerative braking device. The DSP-based frequency converter regenerative braking device has the advantages of simple structure, energy-saving property and high fast braking performance. The DSP-based frequency converter regenerative braking device of the invention comprises a CPU and peripheral circuits, wherein the peripheral circuits comprise a clock circuit and a reset circuit. The DSP-based frequency converter regenerative braking device is characterized in that the DSP-based frequency converter regenerative braking device further comprises a signal detection and conditioning circuit, a driving circuit and a protection circuit; power grid side inductance current, DC bus voltage and AC power grid voltage zero crossing signals are inputted to the main control system CPU through the signal detection and conditioning circuit, so that a DSP can complete control on an entire system.

Description

technical field [0001] The invention relates to an improvement of a DSP-based frequency converter feedback braking device. Background technique [0002] At present, simple energy consumption braking is widely used in AC frequency conversion speed regulation systems, which has the disadvantages of wasting electric energy and poor fast braking performance. Contents of the invention [0003] The present invention aims at the above problems and provides a DSP-based frequency converter feedback braking device with simple structure, energy saving and fast braking performance. [0004] In order to achieve the above object, the present invention adopts the following technical solutions. The present invention includes a CPU and peripheral circuits, and the peripheral circuits include a clock circuit and a reset circuit. The main points of its structure are: it also includes a signal detection and conditioning circuit, a driving circuit and a protection circuit; wherein, The grid-s...

Claims

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Application Information

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IPC IPC(8): H02P3/18
Inventor 刘铮
Owner 刘铮
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