Control method for current-mode IPT system efficiency optimizing control circuit
A system efficiency and optimization control technology, applied in electromagnetic wave systems, circuit devices, control/regulation systems, etc., can solve the problem that the system transmission efficiency cannot be optimal
Active Publication Date: 2015-04-22
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD +1
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Problems solved by technology
Although such a design can guarantee the stability of the system input and output to a certain extent, the system transmission efficiency cannot be optimized.
Method used
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[0043]The specific embodiments and working principles of the present invention will be further described in detail below with reference to the accompanying drawings.
[0044] like figure 2 As shown, a current-mode IPT system efficiency optimization control circuit includes a primary side control circuit and a secondary side control circuit. The primary side control circuit includes a primary side voltage regulator circuit 1, a high frequency inverter circuit 2, and a primary side compensation circuit. 3 and the primary side coil, the secondary side control circuit includes the secondary side coil, the secondary side compensation circuit 4, the rectifier filter circuit 5 and the secondary side voltage regulating circuit 6, the input end of the primary side voltage regulating circuit 1 is connected to the power supply, and the secondary side is connected to the power supply. The output end of the voltage regulating circuit 6 is connected to the load 7;
[0045] As a current mo...
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The invention discloses a current-mode IPT system efficiency optimizing control circuit and method. A primary-side control circuit comprises a primary-side voltage adjustment circuit, a high-frequency inverter circuit, a primary-side compensation circuit, a primary-side coil, a primary-side current detection module and a primary side and secondary side current ratio controller. A secondary-side control circuit comprises a secondary-side coil, a secondary-side compensation circuit, a rectification and filter circuit, a secondary-side voltage adjustment circuit, a secondary-side current detection module and a secondary-side constant-voltage control module. The current-mode IPT system efficiency optimizing control circuit has the advantages that the relationship between the primary side and secondary side current ratio and system transmission efficiency is fully utilized, and the primary side and secondary side current ratio control idea is adopted for achieving the optimization of system efficiency; the current-mode IPT system efficiency optimizing control circuit is simple in structure and convenient to use; on the premise that secondary-side output voltage is stable, the current-mode IPT system efficiency optimizing control circuit ensures that the system achieves maximum-efficiency output within a wide load range through primary side and secondary side current and voltage detection and the adoption of a multi-path proportional controller.
Description
technical field [0001] The invention relates to inductive power transfer (Inductive Power Transfer, IPT) technology, in particular to a current-mode IPT system efficiency optimization control circuit and a control method thereof. Background technique [0002] Inductive Power Transfer, or IPT for short, is a new technology that transfers energy to a load in a non-contact manner through electromagnetic coupling. Compared with the traditional conductor power supply method, because the energy transmission medium of the IPT system is an electromagnetic field, it has the characteristics of safety, reliability and flexibility, so it is widely used in the power supply of medical organisms, wireless charging and power supply of electric vehicles, etc. occasion. [0003] As an energy transmission technology, transmission efficiency is particularly important. In order to realize the control and protection of the primary side and ensure the stability of the output voltage of the secon...
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IPC IPC(8): H02J17/00H02M3/156H02J50/12
Inventor 祝文姬王智慧吴剑豪唐春森高立克孙跃吴智丁戴欣李珊苏玉刚吴丽芳叶兆虹俞小勇李克文
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD