CN214412598U

CN214412598U - High-efficiency energy-saving power generation isolation circuit

Info

Publication number: CN214412598U
Application number: CN202120594130.8U
Authority: CN
Inventors: 胡小舟; 邢明亮
Original assignee: Jiangsu Huihenghong New Energy Power Technology Co ltd
Current assignee: Jiangsu Wenda New Energy Power Technology Group Co., Ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-10-15
Anticipated expiration: 2031-03-23

Abstract

The utility model provides an energy-efficient type electricity generation isolating circuit, including three-phase half-wave rectifier circuit, single-phase bridge rectifier circuit, step-down isolation transformer T3, driver chip U1. The output of the voltage reduction isolation transformer T3 is connected into a second rectifying circuit, the second rectifying circuit is connected into a driving chip U1, the output end of the driving chip U1 is connected into an isolation high-frequency transformer T2, and the isolation high-frequency transformer T2 triggers and drives the base electrodes of triodes Q1 and Q2; the collectors of the triodes Q1 and Q2 are respectively connected with a high-power isolation transformer T1, the emitters are both connected with a first rectifying circuit, the output end of the first rectifying circuit is connected with an inductor L1 in series and then connected with the central point of the high-power isolation transformer T1, and filter capacitors C1 and C2 are connected between the two ends of the secondary coil of the high-power isolation transformer T1 and the central point in parallel. The high-efficiency energy-saving power generation isolation circuit is simple in structure, capable of efficiently achieving isolation output, and safe and reliable.

Description

High-efficiency energy-saving power generation isolation circuit

Technical Field

The utility model belongs to the technical field of the electricity generation, especially, relate to an energy-efficient type electricity generation buffer circuit.

Background

In the prior art, after the electric power generated by the generator is output through voltage stabilization and filtering, the electric power is generally directly supplied with alternating current to a load, or is rectified into direct current through a rectifier and then output, but the power generation mode has potential safety hazards. In order to improve the safety of the using process, an isolating circuit needs to be added at the output end, but the existing isolating circuit is large in size, complex in structure and low in efficiency, and cannot be generally popularized and used. Therefore, there is a need for an efficient and energy-saving power generation isolation circuit with a simple structure and capable of realizing efficient isolation.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a high-efficient energy-saving electricity generation buffer circuit, circuit structure is simple, can realize keeping apart the output high-efficiently safely.

The utility model discloses a realize above-mentioned technical purpose through following technological means.

A high-efficiency energy-saving power generation isolation circuit comprises a three-phase half-wave rectification circuit and a single-phase bridge rectification circuit, wherein the three-phase half-wave rectification circuit is connected with 380V, the output end of the three-phase half-wave rectification circuit is connected with the central point of a primary coil of a high-power isolation transformer T1 after being connected with an inductor L1 in series, two ends of the primary coil of the high-power isolation transformer T1 are respectively connected with collectors of triodes Q1 and Q2, and emitting electrodes of the triodes Q1 and Q2 are connected with the three-phase half-wave rectification circuit; filter capacitors C1 and C2 are connected in parallel between the two ends of the secondary coil of the high-power isolation transformer T1 and the central point;

the input end of the single-phase bridge rectifier circuit is connected with a step-down isolation transformer T3, and the output end of the single-phase bridge rectifier circuit is connected with a filter capacitor C4 and a current-limiting resistor R3 in parallel and then connected with a driving chip U1; the primary coil of the voltage reduction isolation transformer T3 is connected with 220V; the driving output end of the driving chip U1 is connected with an isolation high-frequency transformer T2, and the isolation high-frequency transformer T2 triggers and drives the base electrodes of the triodes Q1 and Q2.

Further, the driving chip U1 has model number HXZ336G, and the pins are set as follows: 1. the pin 8 is a driving output end, wherein the pin 1 is a driving signal cathode, and the pin 8 is a driving signal anode; pin 2 is a hollow pin, and pins 3 and 4 are power supply input ends; 5. an adjustable capacitor C3 with adjustable external frequency is connected between the 6 pins; 5. and the pin 7 is connected with an adjustable resistor R2 in parallel.

Furthermore, a pin 1 of the driving chip U1 is connected in series with a current limiting resistor R1 and then connected to one end of the primary coil of the isolation high-frequency transformer T2, and a pin 8 is connected to the other end of the primary coil of the isolation high-frequency transformer T2.

Furthermore, the resistance values of the current limiting resistor R1, the current limiting resistor R3 and the adjustable resistor R2 are all 10K Ω.

Further, the three-phase half-wave rectification circuit comprises custom diodes D5, D6, D7, D8, D9 and D10 with withstand voltage of 3000V and current of 10A.

Further, the single-phase bridge rectification circuit comprises diodes D1, D2, D3 and D4 which are IN 4007.

Furthermore, the filter capacitors C1 and C2 are capacitors with the capacity of 1uF and the withstand voltage of 400V; the adjustable capacitor C3 and the filter capacitor C4 are capacitors with the capacity of 10nF and the withstand voltage of 63V.

Further, the inductance value of the inductor L1 is 2.5 mH.

The utility model discloses following beneficial effect has:

the high-efficiency energy-saving power generation isolation circuit provided by the utility model has the advantages of simple circuit structure, high power and adjustable output frequency and voltage, can realize isolated output efficiently, and is more energy-saving, safe and reliable in the whole process; the isolation output voltage is stable 380V, a main coil of an isolation transformer T1 is connected with a triode Q1 and a triode Q2, parameters of the main coil are parallel wound of multiple strands, output is also parallel wound of the multiple strands, and the isolation transformer has the advantages of high power, high efficiency and the like.

Drawings

Fig. 1 is the schematic diagram of the high-efficiency energy-saving power generation isolation circuit of the present invention.

Detailed Description

The invention will be further described with reference to the drawings and the following examples, but the scope of the invention is not limited thereto.

As shown in fig. 1, the high-efficiency energy-saving power generation isolation circuit of the present invention comprises the following components and circuit modules: fuses F1, F2, F3; a three-phase half-wave rectifying circuit consisting of customized diodes D5, D6, D7, D8, D9 and D10 with the withstand voltage of 3000V and the current of 10A; an inductance L1 of 2.5 mH; 2SC3998 triodes Q1, Q2; a high power isolation transformer T1; filter capacitors C1 and C2 with the capacity of 1uF and the withstand voltage of 400V; a filter capacitor C4 with capacity of 10nF and withstand voltage of 63V; the adjustable capacitor C3 with the capacity of 10nF and the withstand voltage of 63V; an isolation high-frequency transformer T2, the inductance value of the primary coil is 20mh, and the inductance value of the secondary coil is double 15 mh; a driver chip U1 (HXZ 336G); a single-phase bridge rectifier circuit consisting of diodes D1, D2, D3 and D4 of which the models are IN 4007; a step-down isolation transformer T3; current limiting resistors R1 and R3 with the resistance value of 10K omega; and the adjustable resistor R2 with the resistance value of 10K omega.

The driver chip U1 is a chip developed autonomously, and specific pins are set as: pins 1 and 8 of the driving chip U1 are driving output ends, wherein pin 1 is a driving signal cathode, and pin 8 is a driving signal anode; pin 2 is a hollow pin, and pins 3 and 4 are power supply input ends; 5. an adjustable capacitor C3 with adjustable external frequency is connected between the 6 pins and is used for adjusting the output frequency of the chip; 5. and the 7-pin is connected with an adjustable resistor R2 in parallel and used for stabilizing the frequency.

As shown in fig. 1, a primary coil of a step-down isolation transformer T3 is connected with 220V voltage, a secondary coil is connected with a single-phase bridge rectifier circuit, the single-phase bridge rectifier circuit is connected in parallel with a filter capacitor C4 and a current-limiting resistor R3 and then connected to pins 3 and 4 of a driving chip U1, and the current-limiting resistor R3 is used for stopping discharge and limiting current; a pin 1 of the driving chip U1 is connected in series with a current limiting resistor R1 and then connected to one end of a primary coil of an isolation high-frequency transformer T2, and a pin 8 is connected to the other end of the primary coil of the isolation high-frequency transformer T2; the secondary coil of the isolation high-frequency transformer T2 is respectively connected with the bases of a triode Q1 and a triode Q2, the collectors of the triodes Q1 and Q2 are respectively connected with the primary coil of a high-power isolation transformer T1, and the emitters of the triodes Q1 and Q2 are both connected with a three-phase half-wave rectification circuit; the output end of the three-phase half-wave rectification circuit is connected with an inductor L1 in series and then is connected with the central point of a primary coil of a high-power isolation transformer T1, and filter capacitors C1 and C2 are connected between the two ends of a secondary coil of the high-power isolation transformer T1 and the central point in parallel.

220V is changed into 15V output after passing through a voltage reduction isolation transformer T3, full-bridge rectification is carried out after the output through a single-phase bridge rectifier circuit, then 15V direct current is filtered through a filter capacitor C4, high-efficiency smooth direct current output is guaranteed, then the direct current is input through pins 3 and 4 of a driving chip U1 and is output to an isolation high-frequency transformer T2 through pins 1 and 8, then the isolation high-frequency transformer T2 triggers and drives bases of triodes Q1 and Q2 which are connected in parallel, and current is continuously output to a three-phase half-wave rectifier circuit from emitting electrodes of the triodes Q1 and Q2.

380V input voltage passes through fuses F1, F2 and F3 and then is input into a three-phase half-wave rectification circuit for three-phase half-wave rectification, noise waves are filtered through a series inductor L1, then the input voltage is input into a central point tap of a high-power isolation transformer T1, the output voltage is output through a secondary coil of the high-power isolation transformer T1, filtering is carried out through filter capacitors C1 and C2, and finally isolation output of the voltage is achieved.

The embodiment is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and any obvious improvement, replacement or modification which can be made by those skilled in the art without departing from the essence of the present invention belongs to the protection scope of the present invention.

Claims

1. A high-efficiency energy-saving power generation isolation circuit is characterized by comprising a three-phase half-wave rectification circuit and a single-phase bridge rectification circuit, wherein the three-phase half-wave rectification circuit is connected with 380V, the output end of the three-phase half-wave rectification circuit is connected with the central point of a primary coil of a high-power isolation transformer T1 after being connected with an inductor L1 in series, two ends of the primary coil of the high-power isolation transformer T1 are respectively connected with collectors of triodes Q1 and Q2, and emitting electrodes of the triodes Q1 and Q2 are connected with the three-phase half-wave rectification circuit; filter capacitors C1 and C2 are connected in parallel between the two ends of the secondary coil of the high-power isolation transformer T1 and the central point;

2. The power-efficient and energy-saving power generation isolation circuit of claim 1, wherein the driving chip U1 is model HXZ336G, and the pins are set as follows: 1. the pin 8 is a driving output end, wherein the pin 1 is a driving signal cathode, and the pin 8 is a driving signal anode; pin 2 is a hollow pin, and pins 3 and 4 are power supply input ends; 5. an adjustable capacitor C3 with adjustable external frequency is connected between the 6 pins; 5. and the pin 7 is connected with an adjustable resistor R2 in parallel.

3. The high efficiency energy saving type power generation isolation circuit according to claim 2, wherein 1 pin of the driving chip U1 is connected in series with a current limiting resistor R1 and then connected to one end of the primary coil of the isolation high frequency transformer T2, and 8 pins are connected to the other end of the primary coil of the isolation high frequency transformer T2.

4. The efficient energy-saving power generation isolation circuit as claimed in claim 3, wherein the resistance values of the current limiting resistor R1, the current limiting resistor R3 and the adjustable resistor R2 are all 10K Ω.

5. The efficient energy-saving power generation isolation circuit of claim 1, wherein the three-phase half-wave rectification circuit comprises custom diodes D5, D6, D7, D8, D9 and D10 with the voltage resistance of 3000V and the current of 10A.

6. The efficient energy-saving power generation isolation circuit of claim 1, wherein the single-phase bridge rectification circuit comprises diodes D1, D2, D3 and D4 which are all IN 4007.

7. The efficient energy-saving power generation isolation circuit as claimed in claim 1, wherein the filter capacitors C1 and C2 are capacitors with capacity of 1uF and withstand voltage of 400V; the adjustable capacitor C3 and the filter capacitor C4 are capacitors with the capacity of 10nF and the withstand voltage of 63V.

8. The power-saving power generation isolation circuit as claimed in claim 1, wherein the inductance of the inductor L1 is 2.5 mH.