Inductive electric power transmission system and robust mixed sensitivity control method thereof

A technology for inductive power transmission and control circuits, applied in the direction of electrical components, circuit devices, etc., can solve problems such as voltage and current stress fluctuations of components, increase of strong electromagnetic interference, system instability of system parameters, etc., to achieve good steady-state performance, The effect of fast tracking speed and low sensitivity

Pending Publication Date: 2019-04-12
CHINA UNIV OF MINING & TECH +1
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Problems solved by technology

In actual application, as the working conditions or environment of the system change, the aging or damage of system components, the characteristics of the controlled object itself will change accordingly, and the system parameters (such as coupling coefficient, load, resonance frequen

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  • Inductive electric power transmission system and robust mixed sensitivity control method thereof
  • Inductive electric power transmission system and robust mixed sensitivity control method thereof
  • Inductive electric power transmission system and robust mixed sensitivity control method thereof

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Embodiment Construction

[0034] The robust control method for the inductive power transmission system based on mixed sensitivity of the present invention will be further described below in conjunction with the accompanying drawings.

[0035] figure 1 It is a structural block diagram of the robust control of the inductive power transfer system device of the present invention, the inductive power transfer system device includes: a main circuit and a control circuit, and the control circuit is connected to the load of the main circuit;

[0036] The main circuit is a relay-type inductive power transmission system, including a DC voltage source 1, a Buck converter 2, a high-frequency inverter 3, a primary side LC resonant network 4, a relay LCL resonant network 5, and a secondary side LC resonant network 6. Rectifier circuit 7, filter capacitor 8 and load 9;

[0037] The DC voltage source 1 is connected to both ends of the Buck converter 2, and the output terminal of the Buck converter 2 is connected to t...

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Abstract

The invention discloses an inductive electric power transmission system and a robust mixed sensitivity control method thereof, and belongs to the field of wireless electric power transmission. The method comprises the following steps of: establishing a state model by utilizing a generalized state space average method according to a system circuit structure, so as to obtain a transfer function G(s)of a nominal object; and defining a sensitivity function S and a complementary sensitivity function T, constructing weighting functions Ws, WR and WT satisfying system performance and robustness requirements by comprehensively considering a system load, a frequency change and an external disturbance factor, establishing a generalized controlled object P and a closed loop transfer function Tzr(s)through a weighted augmented system, and solving a transfer function K(s) of a controller on the basis of an Riccati equation method. According to the method, a mixed sensitivity-based robust controller can be designed according to performance requirements of the inductive electric power transmission system, so that parameter changes can be effectively inhibited and the anti-interference ability and robust stability can be improved.

Description

technical field [0001] The invention relates to an inductive power transmission system and a mixed sensitivity robust control method thereof, belonging to the technical field of wireless power transmission. Background technique [0002] The traditional contact power access mode is often accompanied by problems such as device wear, poor contact, and contact sparks, which may even lead to loss of life and property. Moreover, the charging site is chaotic, which also brings potential hazards to electricity safety. With the increasing demand of people, people are forced to find a safe, reliable, convenient and stable power supply method to replace the traditional wired transmission, and at the same time, it can meet the application requirements in special environments and special occasions. Inductive Coupling Power Transfer (ICPT for short) is a new power access mode that uses space electromagnetic fields to transfer power from the source device to the power receiving device. Thi...

Claims

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Application Information

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IPC IPC(8): H02J50/12
CPCH02J50/12
Inventor 夏晨阳孙琪琪李欣宇吴远航彭昱翔路强陈俊
Owner CHINA UNIV OF MINING & TECH
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