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A Discrete State Event-Driven Method for Computing Rigid Power Electronic Systems

A power electronics and event-driven technology, applied in general control systems, control/regulation systems, instruments, etc., can solve problems such as algorithm optimization without power electronics systems

Active Publication Date: 2022-07-12
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing algorithms ignore the latter, and do not optimize the algorithm for the characteristics of power electronic systems.

Method used

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  • A Discrete State Event-Driven Method for Computing Rigid Power Electronic Systems
  • A Discrete State Event-Driven Method for Computing Rigid Power Electronic Systems
  • A Discrete State Event-Driven Method for Computing Rigid Power Electronic Systems

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Experimental program
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Embodiment

[0040] like figure 2 As shown, in this embodiment, the rigid power electronic system is a power electronic transformer that supports bidirectional energy flow, the power is 2MW, and it includes four ports, which are a low-voltage AC LVAC port, a high-voltage AC HVAC port, and a low-voltage DC LVDC port. port and HVDC port. The input of the LVAC port is a 380V three-phase AC signal, including three positive terminals a, b, c, and a negative terminal n, and the terminals a, b, and c are respectively connected to the inductor L a , L b , L c , the negative terminal n is connected to the inductor L n ;The isolation capacitor C is connected across the positive terminals a, b, c and the negative terminal n respectively a , C b , C c ; switch tube S a1 The emitter is connected to the switch S a2 collector, switch S b1 The emitter is connected to the switch S b2 collector, switch S c1 The emitter is connected to the switch S c2 collector, switch S n1 The emitter is conne...

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Abstract

The invention discloses a method for calculating the discrete state event driving of a rigid power electronic system. The method can change the step size by integer multiples, avoid extra calculation when changing the step size, and can accurately use the interpolation method. The system state at the moment of discrete event occurrence is obtained without additional iterative calculation, thereby improving the overall solution efficiency. Compared with the mature ode15s method, the efficiency is improved by more than 60 times. Using this method, the high-efficiency simulation of rigid power electronic system can be realized, which provides an important tool for system reliability analysis and overall system design.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a method for calculating discrete state event-driven of a rigid power electronic system. Background technique [0002] Nowadays, the application of power electronic systems is gradually widespread, and has penetrated into various fields such as smart grid, new energy power generation, electric traction, etc., and has played a key role. The stray parameters in the power electronic system have a great influence on the reliability of the system, and often cause a series of problems such as high-frequency oscillation and electromagnetic interference within the system. Therefore, the design and evaluation of power electronic systems including stray parameters is particularly important, and is an indispensable link in practical applications. However, such systems exhibit rigid characteristics, which are a class of problems that are not easy to solve and require e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B17/02
CPCG05B17/02Y02E60/00
Inventor 鞠佳禾赵争鸣施博辰虞竹珺朱义诚
Owner TSINGHUA UNIV