Driving circuit

A driving circuit and reactor technology, applied in electrical components, AC motor control, output power conversion devices, etc., can solve problems such as equipment failure, electromagnetic interference, and interference of the power grid

Inactive Publication Date: 2018-10-26
HUIZHOU HYDRO CARESYS MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a frequency converter is used in the driving circuit, it will generate a lot of electromagnetic interference to the power grid during the operation of the driving circuit, which will easily lead to equipment failure, and will cause interference and failure to other nearby electronic equipment or instruments, causing other The device is not working properly

Method used

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] combine figure 1 and figure 2 As shown, a driving circuit according to a preferred embodiment of the present invention includes a power input terminal 1, an isolation module 2, an impedance module 3, a frequency conversion module 4 and a filter module 5;

[0023] The power input terminal 1 is connected to the input terminal of the isolation module 2, the output terminal of the isolation module 2 is connected to the input terminal of the impedance module 3, and the output terminal of the impedance module 3 is connected to the frequency conversion module 4 The input terminal of the frequency conversion module 4 is connected to the input terminal of the filter modul...

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Abstract

The present invention relates to the technical field of power control, and discloses a driving circuit. The driving circuit comprises a power input end, an isolating module, an impendence module, a frequency conversion module and a filtering module. The power input end is connected with an input end of the isolating module. An output end of the isolating module is connected with an input end of the impendence module. An output end of the impendence module is connected with an input end of the frequency conversion module. An output end of the frequency conversion module is connected with an input end of the filtering module. An output end of the filtering module is used for connecting an execution module. The frequency conversion module comprises a frequency converter and a capacitor. An input end of the frequency converter is connected with an output end of the impendence module. An output end of the frequency converter is connected with an input end of the filtering module. The frequency converter is connected with the capacitor in parallel. The driving circuit of the present invention ensures the stability of output voltage, avoids a voltage fluctuation problem, ensures the stability of output power of a device and thus ensures normal operation of the device. Meanwhile, the driving circuit reduces electromagnetic radiation interference to the outside and ensures normal operation of other devices nearby.

Description

technical field [0001] The invention relates to the technical field of power control, in particular to a driving circuit. Background technique [0002] With the progress and development of power electronics technology and automatic shutdown devices, frequency conversion speed regulation technology has been greatly developed. The inverter has been gradually promoted and popularized because of its advantages of high speed regulation precision, fast effect speed, perfect protection function, strong overload capacity, convenient maintenance and energy saving. [0003] At present, in the existing drive circuit for driving the motor, the frequency converter is usually used to convert the commercial frequency power into AC power of various frequencies, so as to realize the variable speed operation of the motor. Among them, the frequency converter is mainly composed of rectification unit, filter unit, inverter unit, control unit, etc. The overall control of the frequency converter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/16H02M1/12H02M1/44H02P27/04
CPCH02M5/16H02M1/12H02M1/44H02P27/04
Inventor 罗智勇宋翀绂
Owner HUIZHOU HYDRO CARESYS MEDICAL CO LTD
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