14-06-2012, 04:31 PM
POWER ELECTRONIC SYSTEM DESIGN BASED ON BIONICS
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INTRODUCTION
In Industrial fields such as avionic, space, military, telecommunications industry, the power electronic system requires high reliability. To meet such stringent requirement, a valid approach for enhancing power electronic system reliability is urgent and significant. Bionics is a promising scientific discipline, which is characterized by finding principles from biological objects that embody superior principles of previous technology and to which a technological exploitation can be assigned. Applying these principles to the power electronic system design can result in Power Electronics Bionics (PEB).
Autonomous Decentralized Architecture:
Control of today’s power converters is based on a centralized digital controller. One of the main drawbacks of this approach is the large number of signal links that connect the controller and other parts. Furthermore, the signals in typical power electronic system come in variety of physical media. Thus it makes the standardization and modularization of system and subsystems very difficult. Moreover, performances of power converters based on centralized control including online maintenance, online expansion and fault tolerance are usually bad. As a result, some complicated power electronic systems based on centralized controller are usually low reliable.
Autonomous Controllability:
In case one APEBC fails, other APEBCs cooperate autonomously each other to achieve overall system function. As a standardized & integrated power electronic building block, APEBC is similar to Power Electronic Building Block (PEBB) in some degree. However, APEBC is not equal to PEBB. APEBC is characterized by autonomous controllability and cooperation. Compared to the conventional centralized architecture, the ADPES has several predominant operational features such as enhanced reliability, flexibility, online reparability, online expansion and fault tolerance.
Hardware Redundancy:
Any system, subsystem or component is replicated. Spare elements are used to replace the faulty ones. To increase system reliability, N-Modular redundant power electronic systems are designed. As applied to critical avionics on aircraft, illustration cost and weight savings in addition to improved power system reliability. However, redundant components usually add size, weight and cost of the whole equipment.
CONCLUSION:
The implications of bionics to the field of power electronics are very evident from this paper. Innovative and ergonomic designs based on day to day functioning of biological life will come to stay as the fulcrum for the development of power electronic in the future. The advantages in implementing system design based on bionics are in cutting down cost of system design, improvement in performance, enhancement of reliability and implementation of the redundancy factor as explained in the paper.
[attachment=24470]
INTRODUCTION
In Industrial fields such as avionic, space, military, telecommunications industry, the power electronic system requires high reliability. To meet such stringent requirement, a valid approach for enhancing power electronic system reliability is urgent and significant. Bionics is a promising scientific discipline, which is characterized by finding principles from biological objects that embody superior principles of previous technology and to which a technological exploitation can be assigned. Applying these principles to the power electronic system design can result in Power Electronics Bionics (PEB).
Autonomous Decentralized Architecture:
Control of today’s power converters is based on a centralized digital controller. One of the main drawbacks of this approach is the large number of signal links that connect the controller and other parts. Furthermore, the signals in typical power electronic system come in variety of physical media. Thus it makes the standardization and modularization of system and subsystems very difficult. Moreover, performances of power converters based on centralized control including online maintenance, online expansion and fault tolerance are usually bad. As a result, some complicated power electronic systems based on centralized controller are usually low reliable.
Autonomous Controllability:
In case one APEBC fails, other APEBCs cooperate autonomously each other to achieve overall system function. As a standardized & integrated power electronic building block, APEBC is similar to Power Electronic Building Block (PEBB) in some degree. However, APEBC is not equal to PEBB. APEBC is characterized by autonomous controllability and cooperation. Compared to the conventional centralized architecture, the ADPES has several predominant operational features such as enhanced reliability, flexibility, online reparability, online expansion and fault tolerance.
Hardware Redundancy:
Any system, subsystem or component is replicated. Spare elements are used to replace the faulty ones. To increase system reliability, N-Modular redundant power electronic systems are designed. As applied to critical avionics on aircraft, illustration cost and weight savings in addition to improved power system reliability. However, redundant components usually add size, weight and cost of the whole equipment.
CONCLUSION:
The implications of bionics to the field of power electronics are very evident from this paper. Innovative and ergonomic designs based on day to day functioning of biological life will come to stay as the fulcrum for the development of power electronic in the future. The advantages in implementing system design based on bionics are in cutting down cost of system design, improvement in performance, enhancement of reliability and implementation of the redundancy factor as explained in the paper.