Smart Power Modules and Air Conditioners

Abstract

The invention provides an intelligent power module and an air conditioner. The intelligent power module includes: a three-phase upper bridge arm signal input terminal, a three-phase lower bridge arm signal input terminal, a current detection terminal and a PFC control input terminal; the HVIC tube is provided with Respectively connected to the three-phase upper bridge arm signal input terminal and the terminal of the three-phase lower bridge arm signal input terminal, and the first port corresponding to the current detection terminal and the second port corresponding to the PFC control input end; the first input of the adaptive circuit terminal is connected to the first port, the second input terminal of the adaptive circuit is connected to the second port, and the output terminal of the adaptive circuit is used as the enabling terminal of the HVIC tube; when the input signal of the adaptive circuit at the second input terminal is on a rising edge, Does not receive the input signal of the first input terminal, and outputs the enable signal of the first level to allow the HVIC tube to work; when the input signal of the second input terminal is not on the rising edge, receives and outputs the corresponding signal according to the input signal of the first input terminal level enable signal.

Description

technical field [0001] The present invention relates to the technical field of intelligent power modules, in particular to an intelligent power module and an air conditioner. Background technique [0002] Intelligent Power Module (IPM) is a power driver that integrates power electronic discrete devices and integrated circuit technology. The intelligent power module includes power switching devices and high-voltage drive circuits, and has overvoltage, overcurrent and overheating and other fault detection circuits. The logic input terminal of the intelligent power module receives the control signal of the main controller, and the output terminal drives the compressor or subsequent circuits to work, and at the same time sends the detected system status signal back to the main controller. Compared with traditional discrete solutions, intelligent power modules have the advantages of high integration, high reliability, self-test and protection circuits, etc., and are especially s...

AI Technical Summary

Problems solved by technology

Although this false trigger will recover after a period of time without causing damage to the system, it will undoubtedly cause confusion for users

For example, in the application of inverter air conditioners, the higher the ambient temperature is, the more the user needs the continuous operation of the air conditioning system, but the high ambient temperature will increase the reverse recovery time of the FRD tube, and the probability of MTRIP being falsely triggered will increase. When MTRIP is triggered by mistake, the air conditioning system will stop working for 3 to 5 minutes due to the mistaken belief that overcurrent has occurred, so that users cannot obtain cold air during this period. This is one of the main reasons why the air conditioning system receives complaints from customers due to insufficient cooling capacity.

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