Intelligent load dispatching coupled energy-saving transformer

Abstract

The invention discloses an intelligent load dispatching coupled energy-saving transformer, which comprises a main control module, a feedback module, a monitoring module, a transformation ratio adjusting module and a dispatchable load adjusting module, and is characterized in that the feedback module, the monitoring module, the transformation ratio adjusting module and the dispatchable load adjusting module are connected with the main control module; the monitoring module monitors the current load rate of the transformer and feeds back a corresponding voltage signal, the feedback module feeds back an economic load interval signal of the current transformation ratio of the transformer, the transformation ratio adjusting module correspondingly adjusts the transformation ratio of the transformer based on the output of the main control module, and the schedulable load adjusting module correspondingly increases or decreases the load based on the output of the main control module.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to an energy-saving transformer with intelligent load dispatch coupling. Background Technology

[0002] In existing transformers, the core function of multi-group switching is to adjust the output voltage to ensure that the output voltage is within the standard range when the load fluctuates. However, the essence of this adjustment process is to change the transformer's turns ratio. Adjusting the turns ratio will also change the overall loss characteristics of the transformer, causing the transformer's high-efficiency operating range (i.e., the economic load range) to shift accordingly. This makes it difficult for the transformer to maintain its optimal energy efficiency state during actual load rate changes. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention aims to provide an energy-saving transformer with intelligent load dispatch coupling, comprising a main control module, a feedback module, a monitoring module, a transformer ratio adjustment module, and a dispatchable load adjustment module. The feedback module, monitoring module, transformer ratio adjustment module, dispatchable load adjustment module, and main control module are connected. The monitoring module monitors the current load rate of the transformer and feeds back the corresponding voltage signal. The feedback module feeds back the economic load range signal of the current transformer ratio. The transformer ratio adjustment module adjusts the transformer ratio based on the output of the main control module. The dispatchable load adjustment module increases or decreases the load based on the output of the main control module.

[0004] Furthermore, the main control module includes operational amplifier U1, OR gate U2, operational amplifier U3, operational amplifier U4, trigger U5, operational amplifier U6, field-effect transistors Q1, Q2, and Q3, capacitor C1, diode D1, diode D2, and resistor R2. The non-inverting input of operational amplifier U1 is connected to the inverting input of operational amplifier U3, and the inverting input is connected to the non-inverting input of operational amplifier U3. The output of operational amplifier U1 is connected to the first input of OR gate U2. The output of OR gate U2 is connected to the gates of field-effect transistors Q1 and Q3. The output of operational amplifier U3 is connected to the second input of OR gate U2. The non-inverting input of operational amplifier U4 is connected to one end of capacitor C1 and the second input of field-effect transistor Q3. The source of transistor Q2, the source of MOSFET Q3, and the inverting input of op-amp U6 are connected; the output is connected to the anode of diode D2. The second and sixth pins of trigger U5 are connected; the third pin is connected to the cathodes of diodes D1 and D2; the fourth pin is connected to the source of MOSFET Q1 and the other end of resistor R2; the fifth pin is connected to the gate of MOSFET Q2. The output of op-amp U6 is connected to the anode of diode D1. The first pin of trigger U5 and one end of resistor R2 are connected to the power supply. The other end of capacitor C1, the drain of MOSFETs Q1, Q2, and Q3 are connected to ground.

[0005] Furthermore, the main control module also includes a trigger U7, field-effect transistors Q4 and Q5, resistors R10, R11, and R12, and a switch S1. The second and sixth pins of the trigger U7 are connected to the gate of the field-effect transistor Q4, the third pin is connected to the drain of the field-effect transistor Q4, the fourth pin is connected to the source of the field-effect transistor Q5 and one end of resistor R10, and the fifth pin is connected to the C2 terminal of the switch S1. The source of the field-effect transistor Q4 is connected to the output terminal of the operational amplifier U4. The gate of the field-effect transistor Q5 is connected to the output terminal of the OR gate U2. The C1 terminal of the switch S1 is connected to one end of resistor R12, the C3 terminal is connected to the non-inverting input of the operational amplifier U4, and the C4 terminal is connected to one end of resistor R11. The first pin of the trigger U7, the B4 terminal of the switch S1, the other end of resistor R10, the other end of resistor R11, and the other end of resistor R12 are connected to the power supply. The drain of the field-effect transistor Q5 and the B1 terminal of the switch S1 are connected to the ground terminal.

[0006] Furthermore, the main control module also includes resistors R5, R6, and R7. One end of resistor R5 is connected to the power supply, and the other end is connected to one end of resistor R6 and the inverting input of operational amplifier U4. One end of resistor R7 is connected to the other end of resistor R6 and the non-inverting input of operational amplifier U6, and the other end is connected to the ground terminal.

[0007] Furthermore, the main control module also includes resistors R1, R4, and R8. One end of resistor R1 is connected to the third pin of trigger U5; one end of resistor R4 is connected to the fifth pin of trigger U5; one end of resistor R8 is connected to the sixth pin of trigger U5; and the other ends of resistors R1, R4, and R8 are connected to the ground terminal.

[0008] Furthermore, the main control module also includes resistors R9, R13, and R14. One end of resistor R9 is connected to the third pin of trigger U7; one end of resistor R13 is connected to the fifth pin of trigger U7; one end of resistor R14 is connected to the sixth pin of trigger U7; and the other ends of resistors R9, R13, and R14 are connected to the ground terminal.

[0009] Furthermore, the main control module also includes a resistor R3, one end of which is connected to the gate of the field-effect transistor Q3, and the other end is connected to the ground terminal.

[0010] The advantages of this invention compared to the prior art are: This invention can shift the economic load range towards the load rate by adjusting the transformer ratio while ensuring the output voltage standard. When the transformer ratio cannot be adjusted, the load rate can be shifted towards the economic load range by adjusting the load to increase or decrease the load, so that the transformer always maintains the optimal energy efficiency state. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 The circuit structure diagram provided for this invention.

[0013] Figure 2 The circuit structure diagram of the main control module provided by the present invention. Detailed Implementation

[0014] To make the objectives and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection specifically claimed by the present invention.

[0015] This invention discloses an energy-saving transformer with intelligent load scheduling coupling, including a main control module, a feedback module, a monitoring module, a transformer ratio adjustment module, and a dispatchable load adjustment module. The feedback module, monitoring module, transformer ratio adjustment module, dispatchable load adjustment module and main control module are connected. The monitoring module monitors the current load rate of the transformer and feeds back the corresponding voltage signal. The feedback module feeds back the economic load range signal of the current transformer ratio. The transformer ratio adjustment module adjusts the transformer ratio according to the output of the main control module. The dispatchable load adjustment module increases or decreases the load according to the output of the main control module.

[0016] Specifically, the main control module includes operational amplifier U1, OR gate U2, operational amplifier U3, operational amplifier U4, trigger U5, operational amplifier U6, field-effect transistors Q1, Q2, and Q3, capacitor C1, diode D1, diode D2, and resistor R2. The non-inverting input of operational amplifier U1 is connected to the inverting input of operational amplifier U3, and the inverting input is connected to the non-inverting input of operational amplifier U3. The output of operational amplifier U1 is connected to the first input of OR gate U2. The output of OR gate U2 is connected to the gates of field-effect transistors Q1 and Q3. The output of operational amplifier U3 is connected to the second input of OR gate U2. The non-inverting input of operational amplifier U4 is connected to one end of capacitor C1 and the second input of field-effect transistor Q3. The source of transistor Q2, the source of MOSFET Q3, and the inverting input of op-amp U6 are connected together. The output terminal is connected to the anode of diode D2. The second and sixth pins of trigger U5 are connected together. The third pin is connected to the cathodes of diodes D1 and D2. The fourth pin is connected to the source of MOSFET Q1 and the other end of resistor R2. The fifth pin is connected to the gate of MOSFET Q2. The output terminal of op-amp U6 is connected to the anode of diode D1. The first pin of trigger U5 and one end of resistor R2 are connected to the power supply. The other end of capacitor C1, the drain of MOSFET Q1, the drain of MOSFET Q2, the drain of MOSFET Q3, and the ground terminal are connected together.

[0017] Specifically, the main control module also includes a trigger U7, a field-effect transistor (FET) Q4, a field-effect transistor (FET) Q5, resistors R10, R11, and R12, and a switch S1. The second and sixth pins of the trigger U7 are connected to the gate of the FET Q4; the third pin is connected to the drain of the FET Q4; the fourth pin is connected to the source of the FET Q5 and one end of resistor R10; and the fifth pin is connected to the C2 terminal of the switch S1. The source of the FET Q4 is connected to the output terminal of the operational amplifier U4. The gate of the FET Q5 is connected to the output terminal of the OR gate U2. The C1 terminal of the switch S1 is connected to one end of resistor R12; the C3 terminal is connected to the non-inverting input of the operational amplifier U4; and the C4 terminal is connected to one end of resistor R11. The first pin of the trigger U7, the B4 terminal of the switch S1, the other end of resistors R10, R11, and R12 are connected to the power supply. The drain of the FET Q5 and the B1 terminal of the switch S1 are connected to the ground terminal.

[0018] Specifically, the main control module also includes resistors R5, R6, and R7. One end of resistor R5 is connected to the power supply, and the other end is connected to one end of resistor R6 and the inverting input of operational amplifier U4. One end of resistor R7 is connected to the other end of resistor R6 and the non-inverting input of operational amplifier U6, and the other end is connected to the ground terminal.

[0019] Specifically, the main control module also includes resistors R1, R4, and R8. One end of resistor R1 is connected to the third pin of trigger U5; one end of resistor R4 is connected to the fifth pin of trigger U5; one end of resistor R8 is connected to the sixth pin of trigger U5; and the other ends of resistors R1, R4, and R8 are connected to the ground terminal.

[0020] Specifically, the main control module also includes resistors R9, R13, and R14. One end of resistor R9 is connected to the third pin of trigger U7; one end of resistor R13 is connected to the fifth pin of trigger U7; one end of resistor R14 is connected to the sixth pin of trigger U7; and the other ends of resistors R9, R13, and R14 are connected to the ground terminal.

[0021] Specifically, the main control module also includes a resistor R3, one end of which is connected to the gate of the field-effect transistor Q3, and the other end is connected to the ground terminal.

[0022] The monitoring module monitors the current load rate of the transformer and converts it into a corresponding voltage signal for feedback. The non-inverting input of operational amplifier U1 and the inverting input of operational amplifier U3 obtain the current load rate feedback. The feedback module feeds back the economic load range signal of the current transformer ratio. The upper limit signal and lower limit signal of the economic load range are fed back to the inverting input of operational amplifier U1 and the non-inverting input of operational amplifier U3, respectively. When the current load rate is under heavy load, operational amplifier U1 outputs; when it is under no-load, operational amplifier U3 outputs. The output signals of operational amplifiers U1 and U3 are adjustment signals. The adjustment signals are input to the transformer ratio adjustment module. The transformer ratio adjustment module adjusts the transformer ratio according to the output of operational amplifier U1 or operational amplifier U3 to shift the economic load range towards the load rate and place it within the economic load range. When the load rate is within the economic load range, operational amplifiers U1 and U3 are in the off state or the transformer output voltage is at the edge of the standard range, and the transformer ratio adjustment module stops the transformer ratio adjustment.

[0023] Pin 1 of triggers U5 and U7 is the reset pin, pin 2 is the input pin, pin 3 is the control pin, pin 4 is the set pin, pin 5 is the output pin, and pin 6 is the inverting output pin. When the load rate deviates further from the economic load range and the turns ratio cannot be adjusted further, the power supply outputs through resistor R11, the C4 terminal of switch S1, and then through the C3 terminal of switch S1. The two adjustment signals are respectively input to the two input terminals of OR gate U2. When OR gate U2 does not receive an adjustment signal, OR gate U2 is cut off, and field-effect transistor Q3 is turned on. The signal at the C3 terminal of switch S1 goes to ground through the source and drain of field-effect transistor Q3. Its source voltage is clamped by the threshold voltage so that the capacitor C1 terminal has a certain voltage when field-effect transistor Q3 is turned on. The voltage signal at the C1 terminal is the reference signal. The inverting input of operational amplifier U4 and the non-inverting input of operational amplifier U6 are respectively input to a reference signal. The reference signal can be directly fed back by the adjustable power supply. The power supply is divided by resistors R5, R6, and R7 in series. A reference signal is input to the inverting input of op-amp U4 and the non-inverting input of op-amp U6 at resistors R6 and R7 respectively. The values ​​of resistors R5, R6, and R7 are adjusted to set two reference signals. When either input of OR gate U2 receives an adjustment signal, OR gate U2 outputs. When OR gate U2 outputs, MOSFET Q3 is cut off, and the voltage of the reference signal rises. When the reference signal is higher than the signal at resistor R6, op-amp U4 outputs. At this time, the rise of the reference signal delays the output time of op-amp U4 to the economic load range reconfiguration, which is used to prevent the load dispatching from being triggered during the adjustable period. Resistor R11 is used to limit the current rise of the reference signal during this period. The value of resistor R11 is adjusted to set the delay during the economic load range reconfiguration. The signal at the output of op-amp U4 is input to the dispatchable load adjustment module. When the dispatchable load adjustment module receives the signal at the output of op-amp U4, it increases or decreases the load based on the output of op-amp U1 or op-amp U3 to shift the load rate into the economic load range.

[0024] The signal at pin 4 of flip-flop U7 is grounded through the source and drain of MOSFET Q5. Pin 4 of flip-flop U7 is at a low level, causing pin 6 to be low and pin 5 to be high in its initial state. The output signal of OR gate U2 is synchronously fed back to the gate of MOSFET Q5. Resistor R10 is a pull-up resistor for pin 4 of flip-flop U7. When OR gate U2 outputs, MOSFET Q5 is cut off, and pin 4 of flip-flop U7 is at a high level. When operational amplifier U4 outputs, the output signal of operational amplifier U4 is input to pin 3 of flip-flop U7 through the source and drain of MOSFET Q4, causing flip-flop U7 to toggle the levels of pins 5 and 6. Pin 6 is at a high level, causing MOSFET Q4 to be cut off, thus preventing pin 3 of flip-flop U7 from flipping again. Upon receiving the signal, pin 5 is at a low level, causing switch S1 to switch the path. Power is output through C3 of switch S1 after C4. The signal at resistor R7 is set higher than the reference signal, causing op-amp U6 to be initially in output mode. This limits the rising edge signal received by pin 3 of flip-flop U5. Simultaneously, the signal at pin 4 of flip-flop U5 is grounded through MOSFET Q1. Pin 4 of flip-flop U5 is at a low level, causing pin 6 to be low and pin 5 to be high in its initial state. The output of op-amp U4 or op-amp U6 is input to pin 3 of flip-flop U5 through diodes D2 and D1, respectively. Resistor R2 is the pull-up resistor for pin 4 of flip-flop U5. The gate of MOSFET Q1 receives the signal from the output of OR gate U2. When OR gate U2 outputs... When MOSFET Q1 is cut off, pin 4 of flip-flop U5 is at a high level. When OR gate U2 outputs, causing the reference signal voltage to rise and exceed the signal at resistor R7, op-amp U6 is cut off, releasing the restriction on pin 3 of flip-flop U5 to receive the rising edge signal. When op-amp U4 outputs, the signal is input to pin 3 of flip-flop U5 via diode D2, enabling it to receive the rising edge signal. When pin 3 of flip-flop U5 receives the rising edge signal, the levels of pins 5 and 6 of flip-flop U5 flip. The signal at pin 5 of flip-flop U5 is fed back to the gate of MOSFET Q2. When pin 5 of flip-flop U5 is at a low level, MOSFET Q2 is turned on. The signal at capacitor C1 passes through the source and drain of MOSFET Q2 to ground, causing the reference signal voltage to drop and fall below the level at resistor R6. After the signal, operational amplifier U4 is cut off. When the signal is lower than that at resistor R7, operational amplifier U6 outputs. The signal at the output of operational amplifier U6 is input to pin 3 of flip-flop U5 via diode D1. When pin 3 of flip-flop U5 receives a rising edge signal again, the levels of pins 5 and 6 toggle again, MOSFET Q2 is cut off, and the reference signal rises. At this time, the rising time of the reference signal and the output time of operational amplifier U4 are delayed for load scheduling triggering. This is used to prevent unnecessary load increases or decreases caused by short-term load fluctuations. Resistor R12 is used to limit the current rise of the reference signal during this period. Adjusting the value of resistor R12 sets the load scheduling triggering delay. Resistors R9, R13, and R14 are pull-down resistors for pins 3, 5, and 6 of flip-flop U7, respectively.Resistors R1, R4, and R8 are pull-down resistors for pins 3, 5, and 6 of trigger U5, respectively. Resistor R3 is used to discharge the parasitic gate capacitance of MOSFET Q3.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No markings in the claims should be construed as limiting the scope of the claims.

Claims

1. An energy-saving transformer with intelligent load dispatch coupling, characterized in that, It includes a main control module, a feedback module, a monitoring module, a transformer ratio adjustment module, and a dispatchable load adjustment module. The feedback module, monitoring module, transformer ratio adjustment module, dispatchable load adjustment module and main control module are connected. The monitoring module monitors the current load rate of the transformer and feeds back the corresponding voltage signal. The feedback module feeds back the economic load range signal of the current transformer ratio. The transformer ratio adjustment module adjusts the transformer ratio according to the output of the main control module. The dispatchable load adjustment module increases or decreases the load according to the output of the main control module.

2. The energy-saving transformer with intelligent load dispatch coupling according to claim 1, characterized in that, The main control module includes operational amplifier U1, OR gate U2, operational amplifier U3, operational amplifier U4, trigger U5, operational amplifier U6, field-effect transistors Q1, Q2, and Q3, capacitor C1, diode D1, diode D2, and resistor R2. The non-inverting input of operational amplifier U1 is connected to the inverting input of operational amplifier U3, and the inverting input is connected to the non-inverting input of operational amplifier U3. Its output is connected to the first input of OR gate U2. The output of OR gate U2 is connected to the gates of field-effect transistors Q1 and Q3. The output of operational amplifier U3 is connected to the second input of OR gate U2. The non-inverting input of operational amplifier U4 is connected to one end of capacitor C1 and the field-effect transistor... The source of Q2, the source of MOSFET Q3, and the inverting input of op-amp U6 are connected together. The output is connected to the anode of diode D2. The second and sixth pins of flip-flop U5 are connected. The third pin is connected to the cathodes of diodes D1 and D2. The fourth pin is connected to the source of MOSFET Q1 and the other end of resistor R2. The fifth pin is connected to the gate of MOSFET Q2. The output of op-amp U6 is connected to the anode of diode D1. The first pin of flip-flop U5 and one end of resistor R2 are connected to the power supply. The other end of capacitor C1, the drain of MOSFETs Q1, Q2, and Q3 are connected to ground.

3. The energy-saving transformer with intelligent load dispatch coupling according to claim 2, characterized in that, The main control module also includes a trigger U7, field-effect transistors Q4 and Q5, resistors R10, R11, and R12, and a switch S1. The second and sixth pins of trigger U7 are connected to the gate of field-effect transistor Q4; the third pin is connected to the drain of field-effect transistor Q4; the fourth pin is connected to the source of field-effect transistor Q5 and one end of resistor R10; and the fifth pin is connected to the C2 terminal of switch S1. The source of field-effect transistor Q4 is connected to the output terminal of operational amplifier U4; the gate of field-effect transistor Q5 is connected to the output terminal of OR gate U2; the C1 terminal of switch S1 is connected to one end of resistor R12; the C3 terminal is connected to the non-inverting input of operational amplifier U4; and the C4 terminal is connected to one end of resistor R11. The first pin of trigger U7, the B4 terminal of switch S1, the other end of resistors R10, R11, and R12 are connected to the power supply; and the drain of field-effect transistor Q5 and the B1 terminal of switch S1 are connected to ground.

4. The energy-saving transformer with intelligent load dispatch coupling according to claim 2, characterized in that, The main control module also includes resistors R5, R6, and R7. One end of resistor R5 is connected to the power supply, and the other end is connected to one end of resistor R6 and the inverting input of operational amplifier U4. One end of resistor R7 is connected to the other end of resistor R6 and the non-inverting input of operational amplifier U6, and the other end is connected to the ground terminal.

5. The energy-saving transformer with intelligent load dispatch coupling according to claim 2, characterized in that, The main control module also includes resistors R1, R4, and R8. One end of resistor R1 is connected to the third pin of trigger U5; one end of resistor R4 is connected to the fifth pin of trigger U5; one end of resistor R8 is connected to the sixth pin of trigger U5; and the other ends of resistors R1, R4, and R8 are connected to the ground terminal.

6. The energy-saving transformer with intelligent load dispatch coupling according to claim 3, characterized in that, The main control module also includes resistors R9, R13, and R14. One end of resistor R9 is connected to the third pin of trigger U7; one end of resistor R13 is connected to the fifth pin of trigger U7; one end of resistor R14 is connected to the sixth pin of trigger U7; and the other ends of resistors R9, R13, and R14 are connected to the ground terminal.

7. The energy-saving transformer with intelligent load dispatch coupling according to claim 2, characterized in that, The main control module also includes a resistor R3, one end of which is connected to the gate of the field-effect transistor Q3, and the other end is connected to the ground terminal.

Images