Patent ID: 9564754
Date: 2017-02-07
CPC Classifications: H02J,H02M,Y02B

Claim:
1. An energy router for an energy internet, comprising a three-phase three-level bi-directional rectifying unit; a six-phase interleaved DC/DC bi-directional conversion unit; a self-excitation soft start push-pull full-bridge DC/DC bi-directional conversion unit; a three-phase resonant soft switching bi-directional inversion unit; a single-phase full-bridge bi-directional inversion unit; a high-voltage DC bus and a low-voltage DC bus, wherein an input end of the three-phase three-level bi-directional rectifying unit is connected to a 10 KV distribution grid; an output end of the three-phase three-level bi-directional rectifying unit is connected with the high-voltage DC bus; input ends of the self-excitation soft start push-pull full-bridge DC/DC bi-directional conversion unit and the six-phase interleaved DC/DC bi-directional conversion unit are respectively connected with the high-voltage DC bus; an output end of the self-excitation soft start push-pull full-bridge DC/DC bi-directional conversion unit is connected with a DC load, a distributed DC power generating device or a first energy storage device; an output end of the six-phase interleaved DC/DC bi-directional conversion unit is connected with the low-voltage DC bus; input ends of the three-phase resonant soft switching bi-directional inversion unit and the single-phase full-bridge bi-directional inversion unit are connected with the low-voltage DC bus; an output end of the three-phase resonant soft switching bi-directional inversion unit is connected with a three-phase AC load, a distributed three-phase AC power generating device or a second energy storage device; an output end of the single-phase full-bridge bi-directional inversion unit is connected with a single-phase AC load, a distributed single-phase AC power generating device or a third energy storage device, wherein the three-phase three-level bi-directional rectifying unit is used for realizing power conversion between the 10 KV distribution grid and high-voltage direct current to operate in the rectification operating mode or inversion operating mode, wherein the six-phase interleaved DC/DC bi-directional conversion unit is used for realizing power conversion between high-voltage direct current and low-voltage direct current to operate in the voltage increasing operating mode or voltage dropping operating mode, wherein the self-excitation soft start push-pull full-bridge DC/DC bi-directional conversion unit is used for realizing conversion between high-voltage direct current and 240V direct current to operate in the voltage increasing operating mode or voltage dropping operating mode, and supplying appropriate direct current to the distributed DC power generating device, the DC load or the first energy storage device, wherein the three-phase resonant soft switching bi-directional inversion unit is used for realizing conversion between low-voltage direct current and 380V, 50 HZ alternating current to operate in the rectification operating mode or inversion operating mode, wherein the single-phase full-bridge bi-directional inversion unit is used for realizing conversion between low-voltage direct current and 220V, 50 HZ alternating current to operate in the rectification operating mode or inversion operating mode, wherein the high-voltage DC bus is used for stabilizing the output voltage of the three-phase three-level bi-directional rectifying unit, the input voltage of the six-phase interleaved DC/DC bi-directional conversion unit and the input voltage of the self-excitation soft start push-pull full-bridge DC/DC bi-directional conversion unit, wherein the low-voltage DC bus is used for stabilizing the output voltage of the six-phase interleaved DC/DC bi-directional conversion unit, the input voltage of the three-phase resonant soft switching bi-directional inversion unit and the input voltage of the single-phase full-bridge bi-directional inversion unit.