Energy router based on power electronic transformer

Abstract

The invention provides an energy router based on a power electronic transformer. The energy router comprises an inductor L1, a resistor R1, an input stage circuit, an intermediate stage circuit, a transformer T1 and an output stage circuit, one end of the inductor L1 is positive input, the other end of the inductor L1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to positive input of the input stage circuit, the output end of the input stage circuit is connected to the input end of the intermediate stage circuit, and the output end of the intermediate stage circuit is connected to a primary winding of the transformer T1. A secondary winding of the transformer T1 is connected to the input end of the output stage circuit, and the output end of the output stage circuit supplies power to a follow-up load.

Description

Technical Field

[0001] The invention relates to electric power equipment, and in particular to an energy router based on a power electronic transformer. Background Art

[0002] Energy routers are used to manage the energy flow in the power system. They need to have voltage transformation functions and be able to implement energy management.

[0003] The energy routers in the prior art have complex topological structures on the one hand, and poor universality on the other hand, making it difficult to achieve refined management.

[0004] Therefore, in order to solve the above technical problems, it is urgent to propose a new technical means. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide an energy router based on a power electronic transformer, which can realize refined energy regulation in the power system, and the structure of the whole system is simple, the cost is low, and it has strong adaptability.

[0006] The present invention provides an energy router based on a power electronic transformer, comprising an inductor L1, a resistor R1, an input stage circuit, an intermediate stage circuit, a transformer T1 and an output stage circuit;

[0007] One end of the inductor L1 is the positive input, the other end of the inductor L1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the positive input of the input stage circuit, the output end of the input stage circuit is connected to the input end of the intermediate stage circuit, the output end of the intermediate stage circuit is connected to the primary winding of the transformer T1, the secondary winding of the transformer T1 is connected to the input end of the output stage circuit, and the output end of the output stage circuit supplies power to the subsequent load.

[0008] Further, the input stage circuit includes IBGTV11, IGBTV12, IGBTV13, IGBTV14, IGBTV21, IGBTV22, IGBTV23, IGBTV24, capacitor C1, capacitor C2, diode D1, diode D2, diode D3, and diode D4;

[0009] The drain of IBGTV11 serves as the positive output terminal of the input stage circuit, the source of IBGTV11 is connected to the drain of IBGTV12, the source of IBGTV12 is connected to the drain of IBGTV21, the source of IBGTV21 is connected to the drain of IBGTV22, the source of IGBTV22 serves as the negative output terminal of the input stage circuit, the common connection point between the source of IBGTV12 and the drain of IBGTV21 serves as the positive input terminal of the input stage circuit, the anode of the diode D2 is connected to the source of IBGTV21, the cathode of the diode D2 is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the source of IBGTV11;

[0010] The drain of IBGTV13 is connected to the drain of IGBTV11, the source of IBGTV13 is connected to the drain of IBGTV14, the source of IBGTV14 is connected to the drain of IBGTV23, the source of IBGTV23 is connected to the drain of IBGTV24, the source of IGBTV24 is connected to the source of IGBTV22, one end of capacitor C3 is connected to the drain of IBGTV11, and the other end of capacitor C3 is connected to the drain of IGBTV24 through C4. The source, the common connection point between capacitor C1 and capacitor C2 is connected to the anode of diode D3, the cathode of diode D3 is connected to the source of IGBTV13, the anode of diode D4 is connected to the source of IGBTV23, the cathode of diode D4 is connected to the anode of diode D3, the common connection point between capacitor C1 and capacitor C2 is connected to the anode of diode D1; the common connection point between the source of IGBTV14 and IGBTV23 serves as the negative input terminal of the input stage circuit.

[0011] Further, the intermediate stage circuit includes IBGTV31, IGBTV32, IGBTV41, IGBTV42, capacitor C3, capacitor C4, diode D5, and diode D6;

[0012] The drain of IBGTV31 serves as the positive input terminal of the intermediate stage circuit, the source of IBGTV31 is connected to the drain of IBGTV32, the source of IBGTV32 is connected to the drain of IBGTV41, the source of IBGTV41 is connected to the drain of IBGTV42, and the source of IGBTV42 serves as the negative input terminal of the intermediate stage circuit;

[0013] One end of capacitor C3 is connected to the drain of IGBTV31, and the other end of capacitor C3 is connected to the source of IGBTV42 through capacitor C4. The common connection point between capacitor C3 and capacitor C4 is connected to the same-name end of the primary winding of transformer T1 as the positive output end of the intermediate stage circuit, and the opposite-name end of the primary winding of transformer T1 is connected to the source of IGBTV32. The cathode of diode D5 is connected to the source of IGBTV31, the anode of diode D5 is connected to the cathode of diode D6, the anode of diode D6 is connected to the source of IGBTV41, and the anode of diode D5 is also connected to the same-name end of the primary winding of transformer T1.

[0014] Further, the output stage circuit includes IBGTV51, IGBTV52, IGBTV61, IGBTV62, capacitor C5, capacitor C6, capacitor C7, diode D7, and diode D8;

[0015] The drain of IBGTV51 serves as the positive output terminal of the output stage circuit, the source of IBGTV51 is connected to the drain of IBGTV52, the source of IBGTV52 is connected to the drain of IBGTV61, the source of IBGTV61 is connected to the drain of IBGTV62, and the source of IGBTV62 serves as the negative output terminal of the output stage circuit;

[0016] The cathode of the diode D7 is connected to the source of IGBTV51, the anode of the diode D7 is connected to the cathode of the diode D8, and the anode of the diode D8 is connected to the source of IGBTV61;

[0017] The like-name end of the secondary winding of the transformer T1 is connected to the source of IGBTV52, the unlike-name end of the secondary winding of the transformer T1 is connected to the anode of the diode D7 and the common connection point between the capacitor C5 and the capacitor C6, one end of the capacitor C5 is connected to the drain of IGBTV51, the capacitor C5 is connected to the source of IGBTV62 through the capacitor C6, one end of the capacitor C7 is connected to the drain of IGBTV51, and the other end of the capacitor C7 is connected to the source of IGBTV62.

[0018] Beneficial effects of the present invention: Through the present invention, refined energy regulation can be achieved in the power system, and the structure of the entire system is simple, the cost is low, and it has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the structure of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below:

[0022] The present invention provides an energy router based on a power electronic transformer, comprising an inductor L1, a resistor R1, an input stage circuit, an intermediate stage circuit, a transformer T1 and an output stage circuit;

[0023] One end of the inductor L1 is a positive input, the other end of the inductor L1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the positive input of the input stage circuit, the output end of the input stage circuit is connected to the input end of the intermediate stage circuit, the output end of the intermediate stage circuit is connected to the primary winding of the transformer T1, the secondary winding of the transformer T1 is connected to the input end of the output stage circuit, and the output end of the output stage circuit supplies power to the subsequent load. Among them, the energy router is generally also provided with a control unit for outputting a corresponding PWM control signal to each IGBT, and the duty cycle of the corresponding PWM control signal is determined based on a detection module, and the detection module is used to detect the input voltage, current, load voltage, load current and other parameters of the energy router to determine the duty cycle. The determination process is a prior art and will not be repeated here. Through the above structure, refined energy regulation can be achieved in the power system, and the structure of the entire system is simple, the cost is low, and it has strong adaptability.

[0024] In this embodiment, the input stage circuit includes IBGTV11, IGBTV12, IGBTV13, IGBTV14, IGBTV21, IGBTV22, IGBTV23, IGBTV24, capacitor C1, capacitor C2, diode D1, diode D2, diode D3, and diode D4;

[0025] The drain of IBGTV11 serves as the positive output terminal of the input stage circuit, the source of IBGTV11 is connected to the drain of IBGTV12, the source of IBGTV12 is connected to the drain of IBGTV21, the source of IBGTV21 is connected to the drain of IBGTV22, the source of IGBTV22 serves as the negative output terminal of the input stage circuit, the common connection point between the source of IBGTV12 and the drain of IBGTV21 serves as the positive input terminal of the input stage circuit, the anode of the diode D2 is connected to the source of IBGTV21, the cathode of the diode D2 is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the source of IBGTV11;

[0026] The drain of IBGTV13 is connected to the drain of IGBTV11, the source of IBGTV13 is connected to the drain of IBGTV14, the source of IBGTV14 is connected to the drain of IBGTV23, the source of IBGTV23 is connected to the drain of IBGTV24, the source of IGBTV24 is connected to the source of IGBTV22, one end of capacitor C3 is connected to the drain of IBGTV11, and the other end of capacitor C3 is connected to the drain of IGBTV24 through C4. The source, the common connection point between capacitor C1 and capacitor C2 is connected to the anode of diode D3, the cathode of diode D3 is connected to the source of IGBTV13, the anode of diode D4 is connected to the source of IGBTV23, the cathode of diode D4 is connected to the anode of diode D3, the common connection point between capacitor C1 and capacitor C2 is connected to the anode of diode D1; the common connection point between the source of IGBTV14 and IGBTV23 serves as the negative input terminal of the input stage circuit.

[0027] In this embodiment, the intermediate stage circuit includes IBGTV31, IGBTV32, IGBTV41, IGBTV42, capacitor C3, capacitor C4, diode D5, and diode D6;

[0028] The drain of IBGTV31 serves as the positive input terminal of the intermediate stage circuit, the source of IBGTV31 is connected to the drain of IBGTV32, the source of IBGTV32 is connected to the drain of IBGTV41, the source of IBGTV41 is connected to the drain of IBGTV42, and the source of IGBTV42 serves as the negative input terminal of the intermediate stage circuit;

[0029] One end of capacitor C3 is connected to the drain of IGBTV31, and the other end of capacitor C3 is connected to the source of IGBTV42 through capacitor C4. The common connection point between capacitor C3 and capacitor C4 is connected to the same-name end of the primary winding of transformer T1 as the positive output end of the intermediate stage circuit, and the opposite-name end of the primary winding of transformer T1 is connected to the source of IGBTV32. The cathode of diode D5 is connected to the source of IGBTV31, the anode of diode D5 is connected to the cathode of diode D6, the anode of diode D6 is connected to the source of IGBTV41, and the anode of diode D5 is also connected to the same-name end of the primary winding of transformer T1.

[0030] In this embodiment, the output stage circuit includes IBGTV51, IGBTV52, IGBTV61, IGBTV62, capacitor C5, capacitor C6, capacitor C7, diode D7, and diode D8;

[0031] The drain of IBGTV51 serves as the positive output terminal of the output stage circuit, the source of IBGTV51 is connected to the drain of IBGTV52, the source of IBGTV52 is connected to the drain of IBGTV61, the source of IBGTV61 is connected to the drain of IBGTV62, and the source of IGBTV62 serves as the negative output terminal of the output stage circuit;

[0032] The cathode of the diode D7 is connected to the source of IGBTV51, the anode of the diode D7 is connected to the cathode of the diode D8, and the anode of the diode D8 is connected to the source of IGBTV61;

[0033] The like-name end of the secondary winding of the transformer T1 is connected to the source of IGBTV52, the unlike-name end of the secondary winding of the transformer T1 is connected to the anode of the diode D7 and the common connection point between the capacitor C5 and the capacitor C6, one end of the capacitor C5 is connected to the drain of IGBTV51, the capacitor C5 is connected to the source of IGBTV62 through the capacitor C6, one end of the capacitor C7 is connected to the drain of IGBTV51, and the other end of the capacitor C7 is connected to the source of IGBTV62.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An energy router based on a power electronic transformer, characterized in that: It includes an inductor L1, a resistor R1, an input stage circuit, an intermediate stage circuit, a transformer T1 and an output stage circuit; One end of the inductor L1 is the positive input, the other end of the inductor L1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the positive input of the input stage circuit, the output end of the input stage circuit is connected to the input end of the intermediate stage circuit, the output end of the intermediate stage circuit is connected to the primary winding of the transformer T1, the secondary winding of the transformer T1 is connected to the input end of the output stage circuit, and the output end of the output stage circuit supplies power to subsequent loads.

2. The energy router based on power electronic transformer according to claim 1, characterized in that: The input stage circuit includes IBGTV11, IGBTV12, IGBTV13, IGBTV14, IGBTV21, IGBTV22, IGBTV23, IGBTV24, capacitor C1, capacitor C2, diode D1, diode D2, diode D3, and diode D4; The drain of IBGTV11 serves as the positive output terminal of the input stage circuit, the source of IBGTV11 is connected to the drain of IBGTV12, the source of IBGTV12 is connected to the drain of IBGTV21, the source of IBGTV21 is connected to the drain of IBGTV22, the source of IGBTV22 serves as the negative output terminal of the input stage circuit, the common connection point between the source of IBGTV12 and the drain of IBGTV21 serves as the positive input terminal of the input stage circuit, the anode of the diode D2 is connected to the source of IBGTV21, the cathode of the diode D2 is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the source of IBGTV11; The drain of IBGTV13 is connected to the drain of IGBTV11, the source of IBGTV13 is connected to the drain of IBGTV14, the source of IBGTV14 is connected to the drain of IBGTV23, the source of IBGTV23 is connected to the drain of IBGTV24, the source of IGBTV24 is connected to the source of IGBTV22, one end of capacitor C3 is connected to the drain of IBGTV11, and the other end of capacitor C3 is connected to the drain of IGBTV24 through C4. The source, the common connection point between capacitor C1 and capacitor C2 is connected to the anode of diode D3, the cathode of diode D3 is connected to the source of IGBTV13, the anode of diode D4 is connected to the source of IGBTV23, the cathode of diode D4 is connected to the anode of diode D3, the common connection point between capacitor C1 and capacitor C2 is connected to the anode of diode D1; the common connection point between the source of IGBTV14 and IGBTV23 serves as the negative input terminal of the input stage circuit.

3. The energy router based on power electronic transformer according to claim 1, characterized in that: The intermediate stage circuit includes IBGTV31, IGBTV32, IGBTV41, IGBTV42, capacitor C3, capacitor C4, diode D5, and diode D6; The drain of IBGTV31 serves as the positive input terminal of the intermediate stage circuit, the source of IBGTV31 is connected to the drain of IBGTV32, the source of IBGTV32 is connected to the drain of IBGTV41, the source of IBGTV41 is connected to the drain of IBGTV42, and the source of IGBTV42 serves as the negative input terminal of the intermediate stage circuit; One end of capacitor C3 is connected to the drain of IGBTV31, and the other end of capacitor C3 is connected to the source of IGBTV42 through capacitor C4. The common connection point between capacitor C3 and capacitor C4 is connected to the same-name end of the primary winding of transformer T1 as the positive output end of the intermediate stage circuit, and the opposite-name end of the primary winding of transformer T1 is connected to the source of IGBTV32. The cathode of diode D5 is connected to the source of IGBTV31, the anode of diode D5 is connected to the cathode of diode D6, the anode of diode D6 is connected to the source of IGBTV41, and the anode of diode D5 is also connected to the same-name end of the primary winding of transformer T1.

4. The energy router based on power electronic transformer according to claim 1, characterized in that: The output stage circuit includes IBGTV51, IGBTV52, IGBTV61, IGBTV62, capacitor C5, capacitor C6, capacitor C7, diode D7, and diode D8; The drain of IBGTV51 serves as the positive output terminal of the output stage circuit, the source of IBGTV51 is connected to the drain of IBGTV52, the source of IBGTV52 is connected to the drain of IBGTV61, the source of IBGTV61 is connected to the drain of IBGTV62, and the source of IGBTV62 serves as the negative output terminal of the output stage circuit; The cathode of the diode D7 is connected to the source of the IGBTV51, the anode of the diode D7 is connected to the cathode of the diode D8, and the anode of the diode D8 is connected to the source of the IGBTV61; The like-name end of the secondary winding of the transformer T1 is connected to the source of IGBTV52, the unlike-name end of the secondary winding of the transformer T1 is connected to the anode of the diode D7 and the common connection point between the capacitor C5 and the capacitor C6, one end of the capacitor C5 is connected to the drain of IGBTV51, the capacitor C5 is connected to the source of IGBTV62 through the capacitor C6, one end of the capacitor C7 is connected to the drain of IGBTV51, and the other end of the capacitor C7 is connected to the source of IGBTV62.

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