Multipath solid-state power switch digitized integration controlling method

Abstract

The solid power switch control method uses MPU and PLD for integrated control and management, and completes the communication with bus of up machine. Wherein, using MPU to integrated control and protect the I2T and PLD to logic synthesize control signals of all channels; using level-control magnetic isolation drive protective circuit with voltage bootstrapping function; sharing one high-frequency demodulation signal for multipath drive; using rating code function to make MPU online recognize rating of every power plate and distinguish different I2T tripping curve. This invention increases power density of solid power switch, and reduces volume and weight.

Description

1. Technical field [0001] The invention relates to a digital integrated control method for multi-channel solid-state power switches, which belongs to the solid-state power switch control method in the technical field of power electronics and electric engineering. 2. Background technology [0002] The solid-state power switch is the basic component of the solid-state power distribution system. It has both switching and protection functions. It is used to switch on and off the circuit and realize the rapid limitation of over-current and short-circuit current. It is widely used in aircraft, tanks, civilian vehicles, ships, etc. There are a wide range of applications. The existing single-channel solid-state power switch can perform switching control and protection for one load. The solid-state power switch not only has over-current protection and short-circuit protection, but also can transmit data to the control center through the status signal, which is intelligent and remote...

AI Technical Summary

Problems solved by technology

[0004] 1. The upper and lower controllers only perform simple signal sampling, transmission and address translation, but the specific functions of solid-state power switches are as I 2 The tripping delay of T is not digitized and integrated, so it cannot effectively reduce the size and weight

[0005] 2. Adopt the upper and lower level structure, each sub-controller needs to be programmed separately, and the program modification must take into account both the upper and lower levels, which is inconvenient

At the same time, it can be seen that due to the limited functions of the single-chip microcomputer used, a lot of devices need to be expanded, which increases the hardware burden and reduces the reliability.

[0006] 3. Increase the hardware part, add an additional microcontroller, large volume and weight, complicated wiring, and increase cost and loss

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