Intelligent power module and air conditioner

Abstract

The invention provides an intelligent power module and an air conditioner. The intelligent power module includes three-phase upper bridge arm signal input ends, three-phase lower bridge arm signal input ends, a current detection end and a PFC control input end; an HVIC tube is provided with terminals connected to the three-phase upper bridge arm input ends and the three-phase lower bridge arm signal input ends respectively, a first port corresponding to the current detection end and a second port corresponding to the PFC control input ends; a first input end of a self-adaptive circuit is connected to the first port, a second input end of the self-adaptive circuit is connected to the second port, and an output end of the self-adaptive circuit serves as an enabling end of the HVIC tube; when an input signal of the self-adaptive circuit at the second input end is on a rising edge, an input signal of the first input end is not received, and an enabling signal of a first level is output, so as to allow the HVIC tube to work; and when the input signal at the second input end is not on the rising edge, the input signal of the first input end is received and an enabling signal of a corresponding level is output according to the input 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 (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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