Pure sine wave inverter capable of filtering, current sampling, voltage stabilizing and isolation

A current sampling and pure sine wave technology, which is applied in the field of pure sine wave inverters, can solve problems such as the inability to use remote wired communication, and achieve the effects of avoiding signal interference, ensuring data collection, and improving sampling accuracy

Inactive Publication Date: 2016-11-09
SUZHOU MAILI ELECTRICAL APPLIANCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the existing LC filter module cannot be used for remote wired communication in complex environments

Method used

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  • Pure sine wave inverter capable of filtering, current sampling, voltage stabilizing and isolation
  • Pure sine wave inverter capable of filtering, current sampling, voltage stabilizing and isolation
  • Pure sine wave inverter capable of filtering, current sampling, voltage stabilizing and isolation

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In the embodiment of the pure sine wave inverter with filter current sampling, voltage stabilization and isolation function of the present invention, the structural diagram of the pure sine wave inverter with filter current sampling, voltage stabilization and isolation function is as follows figure 1 shown. figure 1 Among them, the pure sine wave inverter with filter current sampling, voltage stabilization and isolation function includes power input mod...

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Abstract

The invention discloses a pure sine wave inverter with filter current sampling, voltage stabilization and isolation functions, which comprises a power input module, an input isolation module, a PWM modulation module, a transformer rectification filter module, an SPWM drive module, an LC filter module, a sine Wave generator, MCU, voltage sampling module and current sampling module; the voltage sampling module includes a voltage comparison circuit and a photocoupler, and the voltage comparison circuit includes a voltage comparator, the first to sixth resistors and the first regulator tube; the LC filter module Including thirty-first to forty-third capacitors, thirty-first to thirty-fourth inductors, thirty-first to thirty-third resistors, thirty-first to thirty-fourth diodes, connectors and active filter. The invention can avoid signal interference, ensure accurate data collected by instruments, realize sampling and detection of various current values, effectively isolate control signals and voltage sampling signals, improve sampling accuracy, and be used for remote wired communication in complex environments.

Description

technical field [0001] The invention relates to the field of inverters, in particular to a pure sine wave inverter with filter current sampling, voltage stabilization and isolation functions. Background technique [0002] An inverter is a device that converts direct current into alternating current. At present, a modified sine wave inverter is used, which is composed of a low-voltage drive control circuit, a pulse width modulation output drive circuit, and an input-output protection circuit. However, this When the waveform generated by the modified sine wave inverter is used for precision instruments, there is no isolation and the signal interference is large, resulting in inaccurate data collection, especially in some medical equipment and military equipment, which have relatively high precision requirements , even a slight disturbance can have serious consequences. [0003] In an integrated circuit, especially in an analog integrated circuit, in order to detect a large cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/5395H02M1/12
CPCH02M7/5395H02M1/12
Inventor 朱海东
Owner SUZHOU MAILI ELECTRICAL APPLIANCE
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