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A Mixed Signal State Machine Simulation Method for AC Solid State Power Controller

A solid-state power and simulation method technology, applied in the field of simulation models, can solve problems such as being unsuitable for AC SSPC, and achieve the effect of fast simulation speed and simple model

Inactive Publication Date: 2017-09-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the characteristics of AC SSPC and DC SSPC are completely different, this method is not suitable for modeling the behavior of AC SSPC

Method used

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  • A Mixed Signal State Machine Simulation Method for AC Solid State Power Controller
  • A Mixed Signal State Machine Simulation Method for AC Solid State Power Controller
  • A Mixed Signal State Machine Simulation Method for AC Solid State Power Controller

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Embodiment Construction

[0075] The key technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0076] Such as figure 1 It is a block diagram of the simulation model of this embodiment, including a digital logic part 1 , an inverse time overcurrent detection part 2 , a current limiting and short circuit fault detection part 3 and an impedance state conversion part 4 . The signal connection relationship of each part has been described in detail in the summary of the invention, and will not be repeated here. The invention adopts the mixed signal state machine method to establish the AC SSPC model. Mixed-signal state machines are suitable for modeling complex objects with complex digital conversion logic, multiple operating states, and a mix of digital-analog and power signals. The AC SSPC has such characteristics. Common modeling software such as Matlab and Saber support mixed-signal state machine modeling. For example, Matlab pr...

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Abstract

The invention discloses a simulation model of an AC solid state power controller which is applied for the system modeling and digital simulation. The AC solid state power controller simulation model is not based on the practical circuit and the members, adopts a mixed signal state machine model to realize impedance transition part, and defines a series of states and state transition functions and state functions expressing output voltage and current characteristics under various states. The mixed signal state machine simulation model of the AC solid state power controller not only accurately simulates changing rule of the impedance and current in various processes like the normal connection, normal disconnection, overvoltage disconnection and two shutdown modes of the short circuit fault of the AC solid power controller, but also guarantees the relatively fast simulation speed.

Description

technical field [0001] The invention relates to a simulation model of an AC solid-state power controller applied to modeling and simulation of power systems of aerospace vehicles, vehicles and ships, and belongs to the field of electrotechnical technology. Background technique [0002] Solid State Power Controller (SSPC for short) is a solid-state power distribution device with a semiconductor power tube as the core, which integrates the switching function of the relay and the protection function of the circuit breaker. SSPC has the advantages of no contact, no arc, no noise, fast response, small electromagnetic interference, long life, high reliability, and convenient computer remote control. [0003] AC SSPC is mainly used in the AC power distribution system of aircraft and ships. It can realize the connection or disconnection of the AC power circuit, and has the ability to limit the load starting inrush current, system surge inrush current and fault current; flow failure...

Claims

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Application Information

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IPC IPC(8): G05B17/02
Inventor 阮立刚王莉叶家瑜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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