CN213581883U - High-precision load regulator - Google Patents
High-precision load regulator Download PDFInfo
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- CN213581883U CN213581883U CN202022198704.8U CN202022198704U CN213581883U CN 213581883 U CN213581883 U CN 213581883U CN 202022198704 U CN202022198704 U CN 202022198704U CN 213581883 U CN213581883 U CN 213581883U
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Abstract
The utility model provides a high accuracy load regulator, inductance L and switch are established ties on the generating line, current sensor I is used for the load current on the induction bus, the E utmost point of insulated gate bipolar transistor IGBT1 and the C utmost point of insulated gate bipolar transistor IGBT2 establish ties and connected node on the generating line, power V's positive pole and busbar connection, electric capacity C's positive pole and busbar connection, power V's negative pole, electric capacity C's negative pole, the E utmost point of insulated gate bipolar transistor IGBT2 establishes ties on the ground wire, the C utmost point of insulated gate bipolar transistor IGBT1 and the E utmost point of insulated gate transistor IGBT2 outwards pull out two lines and be connected with load R, still include the controller, insulated gate bipolar transistor IGBT2 is gathered respectively to the controller, power V, current sensor I's measuring value. The utility model discloses a high accuracy load regulator to seamless regulation is realized to load current's output.
Description
Technical Field
The utility model relates to a technical field of regulating circuit load current, concretely relates to high accuracy load regulator.
Background
When present regulating circuit load current, operating personnel is through parallelly connected a plurality of resistances on the circuit that the power provided voltage, and a change over switch connects in series on each parallel resistance's supply circuit, operating personnel is according to the size of the required electric current of circuit, calculate the size that obtains how many resistances that need increase in the circuit and just can reach the required electric current of circuit with the calculation mode of voltage divided by electric current, open the change over switch of different quantity in view of the above and increase the quantity of resistance, thereby make the size of the load current on the current circuit equal to required electric current size, realize the output of different electric currents in view of the above in a circuit. However, in this method of changing the magnitude of the load current by connecting a plurality of resistors in parallel, since it is necessary to control the switch to be closed, and it takes a certain time to close the switch, the manner of adjusting the magnitude of the load current by connecting a plurality of resistors in parallel in actual operation cannot achieve seamless adjustment of the output of the load current.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high accuracy load regulator to seamless regulation is realized to load current's output.
The utility model provides a high accuracy load regulator, which comprises a controller, inductance L, automatically controlled switch RS, current sensor I, electric capacity C, power V, insulated gate bipolar transistor IGBT1, insulated gate bipolar transistor IGBT2, inductance L and automatically controlled switch RS establish ties on the generating line, current sensor I is used for the load current on the induction generating line, the E of insulated gate bipolar transistor IGBT1 establishes ties and the connected node is on the generating line with the C of insulated gate bipolar transistor IGBT2, power V's positive pole is connected with the generating line, the positive pole of electric capacity C connects the contact between inductance L and the automatically controlled switch RS, power V's negative pole, electric capacity C's negative pole, insulated gate bipolar transistor IGBT 2's E establishes ties on the ground wire, insulated gate bipolar transistor IGBT 1's C and insulated gate bipolar transistor IGBT 2's E draw two lines outwards and be used for being connected with external load R, the controller is respectively electrically connected with the G pole of the insulated gate bipolar transistor IGBT1, the G pole of the insulated gate bipolar transistor IGBT2, the controlled end of the electric control switch RS and the output end of the current sensor I, and collects the voltage of the power supply V.
Further, the resistance value of the load R is adjustable.
Further, the power source V is a battery pack.
Furthermore, the controller collects the voltage of the battery pack through a voltage division circuit, the voltage division circuit is connected with the battery pack in parallel, and a voltage division contact of the voltage division circuit is connected to an ADC channel of the controller.
Further, the C-pole of the IGBT1 is connected to the negative pole of the diode inside the IGBT, and the E-pole of the IGBT1 is connected to the positive pole of the diode inside the IGBT.
Further, the C-pole of the IGBT2 is connected to the negative pole of the diode inside the IGBT, and the E-pole of the IGBT2 is connected to the positive pole of the diode inside the IGBT.
The utility model discloses a high accuracy load regulator replaces the output of load current among the prior art through the method of parallelly connected a plurality of resistance among the prior art through insulated gate bipolar transistor and a plurality of insulated gate bipolar transistor, and the technical scheme of the output of load current among the adjusting circuit can reduce the time of closed parallel resistance, shortens the time of load current's output among the adjusting circuit infinitely to the realization realizes seamless regulation to load current's output, has the incomparable beneficial effect of prior art.
Drawings
FIG. 1 is a topological diagram of a high precision load regulator of the present invention;
reference numerals: 1-a controller; r-load; an L-inductor; i-a current sensor; c-capacitance; a V-power supply; IGBT1 — insulated gate bipolar transistor; IGBT2 — insulated gate bipolar transistor; RS-electric control switch.
Detailed Description
The invention will be further described with reference to the following examples.
Referring to fig. 1, the high-precision regulator of this embodiment includes a power supply V, a load R, an inductor L, a current sensor I, a capacitor C, an insulated gate bipolar transistor IGBT1, and an insulated gate bipolar transistor IGBT2, where the power supply V (e.g., a power supply or a battery pack, etc.) provides an initial voltage for a circuit, the inductor L is a boost inductor L, the insulated gate bipolar transistor IGBT1 and the insulated gate bipolar transistor IGBT2 are used to regulate a load current or a load power in the circuit, and the current sensor I is used to collect an output current of the circuit, and control the IGBT according to a user's requirement to implement a constant current or a constant power or a constant resistance value, etc.
The specific circuit structure is as follows: the inductor L and the electric control switch RS are connected in series on a bus, the current sensor I is used for sensing load current on the bus, the E pole of the insulated gate bipolar transistor IGBT1 is connected in series with the C pole of the insulated gate bipolar transistor IGBT2, the connection node is arranged on the bus, the positive pole of the power supply V is connected with the bus, the positive pole of the capacitor C is connected with the connection point between the inductor L and the electric control switch RS, the negative pole of the power supply V, the negative pole of the capacitor C and the E pole of the insulated gate bipolar transistor IGBT2 are connected in series on the ground wire, and the C pole of the insulated gate bipolar transistor IGBT1 and the E pole of the insulated gate bipolar transistor IGBT2 are pulled outwards to form two lines for being connected with an external load.
To avoid breakdown of the IGBT1 and the IGBT2, the C-terminal of the IGBT1 is connected to the negative terminal of the diode inside the IGBT, the E-terminal of the IGBT1 is connected to the positive terminal of the diode inside the IGBT, the C-terminal of the IGBT2 is connected to the negative terminal of the diode inside the IGBT, and the E-terminal of the IGBT2 is connected to the positive terminal of the diode inside the IGBT.
In order to realize the automatic control of the circuit, the controller further comprises a controller 1, wherein the controller 1 is respectively electrically connected with a G electrode of the insulated gate bipolar transistor IGBT2, an output end of the current sensor I and a controlled end of the electric control switch RS, the controller collects the voltage of the battery pack through a voltage division circuit, the voltage division circuit is connected with the battery pack in parallel, a voltage division contact of the voltage division circuit is connected to an ADC (analog to digital converter) channel of the controller to collect a current value in the current sensor I and a voltage value of a power supply V to be used as a closed-loop regulation quantity, and therefore the load current in the circuit is regulated.
The resistance of the load R can be adjusted in order to simulate different loads to consume current in the circuit.
The utility model discloses a seamless regulation of high accuracy regulator for realizing the electric current, the following process of concrete implementation: the controller 1 controls the electric control switch RS to be closed, the power supply V provides an initial voltage value for the circuit, the controller 1 collects the voltage values at two ends of the power supply V, the controller 1 collects the current value detected by the current sensor I, the current value required by a customer is input into the controller 1 in advance, the controller 1 calculates the collected current and voltage values to obtain the resistance required by the circuit, the load R is adjusted to the corresponding resistance value, the controller 1 compares the current value with the set current value prestored in the controller 1, if the current value is smaller than the set current value, the current value is judged to be small current, the controller 1 conducts the insulated gate bipolar transistor IGBT1, but does not conduct the insulated gate bipolar transistor IGBT2, the charging of the capacitor C is realized, the inductor L absorbs energy to boost, the controller 1 controls the electric control switch RS to be opened, the capacitor C discharges the circuit, so that the current on the circuit is the load current required by a customer, and the inductor L releases energy through the load R to reduce the voltage; if the current value is larger than the set current value due to the limited current capacity of the insulated gate bipolar transistor IGBT1, the current value is judged to be large current, the controller 1 simultaneously conducts the insulated gate bipolar transistor IGBT1 and the insulated gate bipolar transistor IGBT2 to realize the charging of the capacitor C, the inductor L absorbs energy to boost the voltage, the controller 1 controls the electric control switch RS to be switched off, the capacitor C discharges the circuit to enable the current on the circuit to be the load current required by a customer, and the inductor L releases energy to reduce the voltage through the load R. When the current exceeds the size of the insulated gate bipolar transistor IGBT1 and the insulated gate bipolar transistor IGBT2, the load current in the circuit can be shared by adding a new insulated gate bipolar transistor IGBT. The longer the insulated gate bipolar transistor IGBT1 or IGBT2 is on, the longer the charging time of the capacitor C is, and the more the electric quantity discharged from the capacitor C when the electric control switch RS is off.
The beneficial effect of this application: according to the technical scheme, the output of the load current in the circuit is adjusted by connecting a plurality of resistors in parallel through the insulated gate bipolar transistor IGBT1 and the insulated gate bipolar transistor IGBT2 instead of adjusting the output of the load current in the circuit in the prior art, so that the time for closing the resistors in parallel can be shortened, the time for adjusting the output of the load current in the circuit is infinitely shortened, seamless adjustment of the output of the load current is achieved, and the technical scheme has incomparable beneficial effects compared with the prior art.
In addition, the circuit configuration in this embodiment can be used to output the load power and the load resistance.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. A high accuracy load regulator, characterized by: the bus-bar type power supply comprises a controller, an inductor L, an electric control switch RS, a current sensor I, a capacitor C, a power supply V, an insulated gate bipolar transistor IGBT1 and an insulated gate bipolar transistor IGBT2, wherein the inductor L and the electric control switch RS are connected in series on a bus, the current sensor I is used for sensing load current on the bus, an E electrode of an insulated gate bipolar transistor IGBT1 is connected in series with a C electrode of an insulated gate bipolar transistor IGBT2, a connection node is arranged on the bus, an anode of the power supply V is connected with the bus, an anode of the capacitor C is connected with a connection point between the inductor L and the electric control switch RS, a cathode of the power supply V, a cathode of the capacitor C and an E electrode of an insulated gate bipolar transistor IGBT2 are connected in series on a ground wire, two wires are drawn outwards from an IGBT C electrode of an insulated gate bipolar transistor 387IGBT 2 and an E electrode of an insulated gate bipolar transistor 2 for being connected with an external load R, and, And the G pole of the insulated gate bipolar transistor IGBT2, the controlled end of the electric control switch RS and the output end of the current sensor I are electrically connected, and the voltage of the power supply V is acquired.
2. The high accuracy load regulator of claim 1, wherein the load R is adjustable in resistance.
3. The high accuracy load regulator of claim 1, wherein said power source V is a battery pack.
4. The high accuracy load regulator of claim 3, wherein the controller collects the voltage of the battery pack via a voltage divider circuit, the voltage divider circuit is connected in parallel with the battery pack, and a voltage divider contact of the voltage divider circuit is connected to an ADC channel of the controller.
5. The high accuracy load regulator of claim 1, wherein the C-pole of the IGBT1 is connected to the negative pole of the diode inside it, and the E-pole of the IGBT1 is connected to the positive pole of the diode inside it.
6. The high accuracy load regulator of claim 1, wherein the C-pole of the IGBT2 is connected to the negative pole of the diode inside it, and the E-pole of the IGBT2 is connected to the positive pole of the diode inside it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022198704.8U CN213581883U (en) | 2020-09-29 | 2020-09-29 | High-precision load regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022198704.8U CN213581883U (en) | 2020-09-29 | 2020-09-29 | High-precision load regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213581883U true CN213581883U (en) | 2021-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022198704.8U Active CN213581883U (en) | 2020-09-29 | 2020-09-29 | High-precision load regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213581883U (en) |
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2020
- 2020-09-29 CN CN202022198704.8U patent/CN213581883U/en active Active
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