Constant-current energy transmission device

Abstract

The invention discloses a constant-current energy transmission device which comprises a transmitting module, a receiving module and a relay module, wherein the transmitting module, the relay module and the receiving module are sequentially connected in a wireless coupling non-contact mode. The relay module comprises multiple stages of relay units, the relay units are serially connected in a wireless coupling non-contact mode, and each stage of relay unit and the receiving module are connected with a driving circuit; each stage of relay unit comprises a compensation loop, and the current relay unit compensates the energy sent by the transmitting module or the last stage of relay unit through the compensation loop of the current relay unit so as to provide the electric energy with the same current parameter for each driving circuit; and the compensation loop of the current relay unit comprises a receiving compensation loop and a transmitting compensation inductor. Through the wireless coupling non-contact serial connection, the size of the device is reduced, constant-voltage electric energy is provided for all driving circuits, and the capacity and energy transmission capacity of the device are improved.

Description

technical field [0001] The invention relates to the fields of power system technology and power electronics technology, and in particular to a constant current energy transmission device. Background technique [0002] In high-voltage power electronic converter valves for grid applications, the voltage level can be as high as hundreds or even thousands of kilovolts. In order to increase the voltage level of power electronic devices, multiple power semiconductor devices need to be applied in series. In the series application of devices, each device needs to be equipped with a gate drive circuit responsible for the control and protection of the device, because the devices in series are at different potentials, and the corresponding gate drive circuits are also at different potentials. Therefore, how to ensure the isolation of the drive circuit Power supply is important. Contents of the invention [0003] Therefore, the present invention provides a constant current energy de...

AI Technical Summary

Problems solved by technology

[0003] Therefore, the present invention provides a constant current energy delivery device, thereby solving the problem in the prior art that the isolated power supply of the driving circuit cannot be guaranteed

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