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Dynamic wireless charging output power control method based on sliding mode predictive control

An output power and predictive control technology, applied in output power conversion devices, control/regulation systems, DC power input conversion to DC power output, etc., can solve the problems of system oscillation, difficult and fast adjustment, etc. Available operating range, output power, and efficiency gains

Pending Publication Date: 2022-07-26
QUANZHOU INST OF EQUIP MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the coupling coefficient changes rapidly in a large range, the traditional proportional-integral (PI) control algorithm is difficult to adjust quickly, resulting in system oscillation

Method used

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  • Dynamic wireless charging output power control method based on sliding mode predictive control
  • Dynamic wireless charging output power control method based on sliding mode predictive control
  • Dynamic wireless charging output power control method based on sliding mode predictive control

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Embodiment Construction

[0064] By providing a dynamic wireless charging output power control method based on sliding mode predictive control, the embodiment of the present application proposes a sliding mode predictive control algorithm for dynamically coupled discrete nonlinear systems, which improves the dynamic charging of objects to be charged under low-speed driving. output stability issues.

[0065] The technical scheme in the embodiment of the present application, the general idea is as follows:

[0066] In the field of research and engineering applications of wireless power transfer systems, there are four basic resonance compensation structures commonly used, as well as LCC-S (inductor-capacitor-capacitor-series), LCC-LCC (inductor-capacitor-capacitor-inductor-capacitor-capacitor) Equal composite resonance compensation structure. In a fixed circuit with parameters ignoring the internal resistance of each inductor coil, the track current in the LCC-S compensation topology is only related to ...

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Abstract

The invention discloses a dynamic wireless charging output power control method based on sliding mode predictive control, and belongs to the technical field of wireless power transmission. The method is applied to an LCC-S type resonant circuit, the output voltage can be kept stable in the dynamic process, the output power of the magnetic coupling resonant wireless power transmission system is maximized, and control can be carried out only by sampling load voltage and inductive current. The sliding mode prediction controller based on the method can realize feedback self-correction of sliding mode control. Compared with a conventional controller, the controller realized by the method disclosed by the invention shows more accurate and faster performance in both transient and steady-state environments. The controller is a new predictive control algorithm based on a certain condition, the available working range of the system is enlarged, and the reliability of the wireless charging system under the condition that the coupling coefficient dynamically changes in a large range is ensured.

Description

technical field [0001] The invention relates to the technical field of wireless power transmission, in particular to a dynamic wireless charging output power control method based on sliding mode predictive control. Background technique [0002] During the use of electric vehicles and AGV mobile robots, battery life and charging problems are controlled. The use of wireless power transmission can solve problems such as interface limitations and cumbersome procedures, and effectively improve charging reliability. At present, there are mainly two wireless power transmission methods: static and dynamic, but static wireless charging has problems such as fixed charging position and low output power; while dynamic wireless power transmission (DWPT) technology uses a non-contact way for driving The objects in the device provide energy supply and effectively improve the endurance. Considering that high-speed driving brings insecurity to the charging stability and system design. For ...

Claims

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Application Information

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IPC IPC(8): H02J50/12H02M3/335H02M1/088
CPCH02J50/12H02M3/3353H02M1/088
Inventor 黄东晓侯隽柯栋梁汪凤翔
Owner QUANZHOU INST OF EQUIP MFG