Intelligent power module and air conditioner

Abstract

The invention provides an intelligent power module and an air conditioner. An HVIC transistor in the intelligent power module is provided with wiring terminals connected to three-phase upper bridge arm signal input ends and three-phase lower bridge arm signal input ends respectively, and a first port corresponding to a current detection end and a second port corresponding to a PFC control input end; a first input end and a second input end of a self-adaption circuit are connected to the first port and the second port respectively, and an output end of the self-adaption circuit serves as an enablement end of the HVIC transistor; the self-adaption circuit outputs corresponding level enablement signals according to the relation between the value of the input signal of the first input end and a first preset value when the temperature of the IPM is lower than a preset temperature value; and the self-adaption circuit outputs corresponding level enablement signals according to information of whether the input signal of the second input end is in a rising edge, and the relation between the value of the input signal of the first input end and a second preset value or the first preset value when the temperature of the IPM is larger than the preset temperature value, wherein the second preset value is larger than the first preset value.

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 (Intelligent Power Module, referred to as IPM) is a power driver that integrates power electronic discrete devices and integrated circuit technology. 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 suitable for inverters and various inverter power supplies for driving motors. Ideal power electronic d...

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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