Using MCU's eeprom to set the overload point of dual-frequency inverter

A setting method and inverter technology, applied in the direction of converting AC power input to DC power output, output power conversion device, electrical components, etc., can solve the problem that the inverter value is not consistent, unrealistic, and affects the overload point and other problems, to achieve the effect of stable overload point

Active Publication Date: 2015-08-05
宁波德业变频技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the two frequencies cannot obtain a unified overload point
If the overload points of the two frequencies are set in the software, the values ​​of each inverter will basically not be the same, which is not practical in actual production
Another disadvantage is that because VR1 is an adjustable resistor, it often changes for some reason, thus affecting the overload point

Method used

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  • Using MCU's eeprom to set the overload point of dual-frequency inverter
  • Using MCU's eeprom to set the overload point of dual-frequency inverter
  • Using MCU's eeprom to set the overload point of dual-frequency inverter

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Such as image 3Shown: Use the EEPROM of the MCU to set the overload point of the dual-frequency inverter circuit, including the H-bridge circuit, voltage amplifier circuit, voltage detection circuit, memory circuit, control circuit and power tube drive circuit. The H-bridge circuit includes the first power MOSFET W1, the second power MOSFET W2, the third power MOSFET W3 and the fourth power MOSFET W4, the drain of the first power MOSFET W1 and the drain of the third power MOSFET W3 are connected to the inverter The final DC high voltage output terminal HV is connected, the source level of the second power MOSFET W2 is connected to the source level of the fourth power MOSFET W4 and then grounded through the sampling resistor R21, the source level of the first power MOSFET W1 is connected to the source level of the second power MOSFET T...

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Abstract

The invention discloses a circuit and a method utilizing an EEPROM of an MCU to set an overload point of a bifrequency inverter. The circuit comprises an H bridge circuit, a voltage amplifier circuit, a voltage detection circuit, a memory circuit, a control circuit, and a power tube driving circuit. The H bridge circuit is connected to the amplifier circuit. An output end of the amplifier circuit is connected to the voltage detection circuit. The voltage detection circuit is connected to the control circuit. The control circuit is connected to the voltage detection circuit through the memory circuit. The control circuit drives the H bridge circuit though the power tube driving circuit. According to the method and the circuit, through the utilization of the above circuit arrangement, a jumper wire cap is short connected, and a load is connected, and a switch button is pressed, so that the overload point is set. Data obtained is stored in the EEPROM memory unit.

Description

technical field [0001] The invention relates to an inverter overload point setting circuit and a setting method, in particular to a dual-frequency inverter overload point setting circuit and method using an EEPROM of an MCU. Background technique [0002] In today's society, fossil energy such as oil and coal is becoming more and more tense and will eventually be completely exhausted. Therefore, the use of renewable energy such as solar energy and wind energy is an inevitable development direction in the energy field in the future. In off-grid power systems such as solar energy and wind energy, an important link is to convert the energy of the stored DC power into AC power for use by electrical appliances that require AC power. A device that converts DC power to AC power is called an inverter. In the design process of the inverter, it is necessary to have an overload protection function. Otherwise, when the load power connected to the inverter exceeds the rated power of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/5387
Inventor 刘晓
Owner 宁波德业变频技术有限公司
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