CN117937560A - Voltage regulating system for user side energy storage - Google Patents
Voltage regulating system for user side energy storage Download PDFInfo
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 82
- 238000005070 sampling Methods 0.000 claims abstract description 36
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Abstract
The invention discloses a voltage regulating system of user side energy storage, which relates to the field of voltage regulation, and comprises: the mains supply module is used for outputting alternating current in the low-peak period of power consumption; the beneficial effects of the invention are as follows: the voltage of the waveform conversion output module is detected by arranging the feedback regulation module, and the voltage of the waveform conversion output module is regulated according to the voltage feedback control signal to the voltage regulation inversion module, so that the waveform conversion output module is stable and is not influenced by the reduction of the electric quantity of the battery; in addition, the power utilization module is arranged, when the battery starts to supply power, the waveform conversion output module outputs voltage to the impedance load of the power utilization module at the initial time, after the waveform conversion output module outputs voltage to be stable, the sampling output module and the load switching module cooperate to enable household appliances in the power utilization module to be powered on, so that the power supply of the household appliances is avoided when the waveform conversion output module outputs voltage to be unstable in the initial period of power supply of the battery, and the abnormal operation of the household appliances is avoided.
Description
Technical Field
The invention relates to the field of voltage regulation, in particular to a voltage regulation system for user side energy storage.
Background
The user side energy storage device is charged in a low electricity consumption peak period (low electricity price), the household power supply is realized in a high electricity consumption peak period (high electricity price), the electricity consumption in the low electricity consumption peak period (the energy storage device is charged) is effectively reduced, the electricity consumption in the high electricity consumption peak period is not realized, and the power supply pressure of a power grid can be effectively relieved.
The existing energy storage device often stores electric energy through a battery, and when the battery is converted into alternating current to supply power for the household appliance, the output voltage is also reduced based on the reduction of the battery voltage, so that the household appliance work is not facilitated, and improvement is needed.
Disclosure of Invention
The present invention is directed to a voltage regulating system for storing energy at a user side, so as to solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A voltage regulation system for user-side energy storage, comprising:
The mains supply module is used for outputting 220V alternating current in the low-peak period of power consumption;
The step-down rectifying and filtering module is used for converting 220V alternating current into direct current and outputting the direct current to the energy storage module;
the energy storage module is used for storing electric energy in a low power consumption peak period and outputting voltage in a high power consumption peak period;
the charge-discharge control module is used for controlling the output voltage of the mains supply module and the storage energy of the energy storage module in the low-peak period of electricity consumption; controlling the mains supply module to stop outputting voltage and the energy storage module to output voltage in the power utilization peak period;
The voltage-regulating inversion module is used for converting the output direct current of the energy storage module into square-wave alternating current, amplifying the square-wave alternating current and outputting the square-wave alternating current to the waveform conversion output module;
The waveform conversion output module is used for converting the amplified square wave alternating current into sinusoidal alternating current and outputting the sinusoidal alternating current to the power utilization module;
The feedback regulation module is used for sampling the sinusoidal alternating current output by the waveform conversion output module, obtaining feedback voltage, regulating the voltage output by the voltage regulation inversion module to the voltage of the waveform conversion output module according to the feedback voltage, and finally controlling the waveform conversion output module to output 220V sinusoidal alternating current;
The power utilization module is used for setting two consumption sources, one is an impedance load and the other is a household appliance, the impedance load is connected with a power supply loop of the waveform conversion output module in the initial period, and the household appliance is not connected with the power supply loop of the waveform conversion output module;
the sampling output module is used for sampling the voltage condition of the impedance load, obtaining sampling voltage, judging whether the waveform conversion output module outputs 220V sinusoidal alternating current or not according to the sampling voltage, and driving the load switching module to work when the 220V sinusoidal alternating current is output;
The load switching module is used for controlling the impedance load to be not connected with the power supply loop of the waveform conversion output module when in work, and the household appliance is connected with the power supply loop of the waveform conversion output module;
The output end of the mains supply module is connected with the input end of the buck rectifying and filtering module, the output end of the buck rectifying and filtering module is connected with the first input end of the energy storage module, the output end of the charge-discharge control module is connected with the input end of the mains supply module and the second input end of the energy storage module, the output end of the energy storage module is connected with the first input end of the voltage-regulating inversion module, the output end of the voltage-regulating inversion module is connected with the input end of the waveform conversion output module, the output end of the waveform conversion output module is connected with the first input end of the power utilization module and the input end of the feedback regulation module, the output end of the feedback regulation module is connected with the second input end of the voltage-regulating inversion module, the output end of the power utilization module is connected with the input end of the sampling output module, the output end of the sampling output module is connected with the input end of the load switching module, and the output end of the load switching module is connected with the second input end of the power utilization module.
As still further aspects of the invention: the voltage regulating inversion module comprises a first MOS tube, a third capacitor, a second MOS tube, a third MOS tube, a fourth MOS tube, a fifth MOS tube and a second transformer, wherein the D electrode of the first MOS tube is connected with the output end of the energy storage module, the G electrode of the first MOS tube is connected with the output end of the feedback regulation module, the S electrode of the first MOS tube is connected with one end of the third capacitor, the D electrode of the second MOS tube and the D electrode of the fourth MOS tube, the other end of the third capacitor is grounded, the S electrode of the second MOS tube is connected with one end of the input side of the second transformer and the D electrode of the third MOS tube, the S electrode of the fourth MOS tube is connected with the other end of the input side of the second transformer and the D electrode of the fifth MOS tube, the S electrode of the third MOS tube is grounded, the G electrode of the second MOS tube is connected with the G electrode of the fifth MOS tube, the first PWM signal output device, the G electrode of the fourth MOS tube is connected with the G electrode of the third MOS tube, the second signal output device, and the output side of the second transformer is connected with the PWM waveform input end of the conversion module.
As still further aspects of the invention: the waveform conversion output module comprises a first resistor, a second resistor, a third resistor, a fourth capacitor, a fifth capacitor and a sixth capacitor, wherein one end of the first resistor is connected with one end of the output side of the second transformer, the other end of the first resistor is connected with one end of the fourth capacitor and one end of the second resistor, the other end of the fourth capacitor is connected with one end of the fifth capacitor, one end of the sixth capacitor and the other end of the output side of the second transformer, the other end of the second resistor is connected with the other end of the fifth capacitor and one end of the third resistor, and the other end of the third resistor is connected with the other end of the sixth capacitor, the input end of the feedback regulation module and the first input end of the electricity utilization module.
As still further aspects of the invention: the feedback regulation module comprises a fourth diode, a fourth resistor, a first amplifier, a fifth resistor, a first potentiometer and a sixth resistor, wherein the positive electrode of the fourth diode is connected with the output end of the waveform conversion output module, the negative electrode of the fourth diode is connected with one end of the fourth resistor, the other end of the fourth resistor is connected with the inverting end of the first amplifier, the same-phase end of the first amplifier is connected with the sliding end of the first potentiometer, one end of the first potentiometer is grounded, the other end of the first potentiometer is connected with one end of the fifth resistor, the other end of the fifth resistor is connected with the power supply voltage, the output end of the first amplifier is connected with one end of the sixth resistor, and the other end of the sixth resistor is connected with the second input end of the voltage regulation inversion module.
As still further aspects of the invention: the power utilization module comprises a fourth switch, a fifth switch, a household appliance, a seventh resistor and a second potentiometer, wherein the seventh resistor and the second potentiometer jointly form an impedance load, one end of the fourth switch is connected with the waveform conversion output module, one end of the fifth switch is connected with the waveform conversion output module, the fourth switch is connected with the first interface or the second interface, the fifth switch is connected with the third interface or the fourth interface, the first interface is connected with one end of the seventh resistor, the other end of the seventh resistor is connected with one end of the second potentiometer, the other end of the second potentiometer is connected with the third interface, the second interface is connected with one end of the household appliance, and the other end of the household appliance is connected with the fourth interface.
As still further aspects of the invention: the sampling output module comprises a fifth diode, a sixth diode, a seventh capacitor, an eighth diode and an eighth resistor, wherein the positive electrode of the fifth diode is connected with one end of the second potentiometer, the positive electrode of the sixth diode is connected with the other end of the second potentiometer, the sliding end of the second potentiometer is grounded, the negative electrode of the fifth diode is connected with the negative electrode of the sixth diode, one end of the seventh capacitor and the negative electrode of the eighth diode, the other end of the seventh capacitor is grounded, the positive electrode of the eighth diode is connected with one end of the eighth resistor and the input end of the load switching module, and the other end of the eighth resistor is grounded.
As still further aspects of the invention: the load switching module comprises a silicon controlled rectifier, a second relay and a ninth diode, wherein the positive electrode of the silicon controlled rectifier is connected with the power supply voltage, the control electrode of the silicon controlled rectifier is connected with the output end of the sampling output module, the negative electrode of the silicon controlled rectifier is connected with one end of the second relay and the negative electrode of the ninth diode, the other end of the second relay is grounded, and the positive electrode of the ninth diode is grounded.
Compared with the prior art, the invention has the beneficial effects that: the voltage of the waveform conversion output module (namely, the voltage for supplying power to the household appliance) is detected by arranging the feedback adjustment module, and the voltage of the waveform conversion output module is adjusted to be 220V according to the voltage feedback control signal to the voltage adjustment inversion module, so that the voltage is stable and is not influenced by the reduction of the electric quantity of the battery; in addition, the power utilization module is arranged, when the battery starts to supply power, the waveform conversion output module outputs voltage to the impedance load of the power utilization module at the initial time, and the sampling output module and the load switching module cooperate to enable household electric appliances in the power utilization module to be powered along with the fact that the output voltage of the waveform conversion output module is stabilized at 220V, so that the power supply of the household electric appliances is avoided when the output voltage of the waveform conversion output module is unstable in the initial period of power supply of the battery, and the abnormal operation of the household electric appliances is avoided.
Drawings
Fig. 1 is a schematic diagram of a consumer-side energy-storage voltage regulation system.
Fig. 2 is a circuit diagram of a mains power module, a buck rectifying and filtering module, an energy storage module and a charge-discharge control module.
Fig. 3 is a circuit diagram of the voltage regulation inversion module, the waveform conversion output module and the feedback regulation module.
Fig. 4 is a circuit diagram of the power consumption module, the sampling output module and the load switching module.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1, a voltage regulation system for storing energy at a user side includes:
The mains supply module 1 is used for outputting 220V alternating current in the low-peak period of power consumption;
The step-down rectifying and filtering module 2 is used for converting 220V alternating current into direct current and outputting the direct current to the energy storage module 3;
the energy storage module 3 is used for storing electric energy in the low power consumption peak period and outputting voltage in the high power consumption peak period;
the charge-discharge control module 4 is used for controlling the output voltage of the mains supply module 1 and the energy storage module 3 to store electric energy in the low-peak period of electricity consumption; the power supply module 1 is controlled to stop outputting voltage and the energy storage module 3 is controlled to output voltage in the power utilization peak period;
The voltage-regulating inversion module 5 is used for converting the output direct current of the energy storage module 3 into square-wave alternating current, amplifying the square-wave alternating current and outputting the square-wave alternating current to the waveform conversion output module 6;
the waveform conversion output module 6 is used for converting the amplified square-wave alternating current into sinusoidal alternating current and outputting the sinusoidal alternating current to the power utilization module 8;
the feedback regulation module 7 is used for sampling the sinusoidal alternating current output by the waveform conversion output module 6, obtaining feedback voltage, regulating the voltage output by the voltage regulation inversion module 5 to the waveform conversion output module 6 according to the feedback voltage, and finally controlling the waveform conversion output module 6 to output 220V sinusoidal alternating current;
The power utilization module 8 is used for setting two consumption sources, one is an impedance load and the other is a household appliance X, wherein the impedance load is connected with the power supply loop of the waveform conversion output module 6 in the initial period, and the household appliance X is not connected with the power supply loop of the waveform conversion output module 6;
The sampling output module 9 is used for sampling the voltage condition of the impedance load, obtaining sampling voltage, judging whether the waveform conversion output module 6 outputs 220V sinusoidal alternating current or not according to the sampling voltage, and driving the load switching module 10 to work when the 220V sinusoidal alternating current is output;
the load switching module 10 is used for controlling the impedance load not to be connected to the power supply loop of the waveform conversion output module 6 during operation, and the household appliance X is connected to the power supply loop of the waveform conversion output module 6;
The output end of the mains supply module 1 is connected with the input end of the buck rectifying and filtering module 2, the output end of the buck rectifying and filtering module 2 is connected with the first input end of the energy storage module 3, the output end of the charge-discharge control module 4 is connected with the input end of the mains supply module 1 and the second input end of the energy storage module 3, the output end of the energy storage module 3 is connected with the first input end of the voltage regulating inversion module 5, the output end of the voltage regulating inversion module 5 is connected with the input end of the waveform conversion output module 6, the output end of the waveform conversion output module 6 is connected with the first input end of the power utilization module 8 and the input end of the feedback regulating module 7, the output end of the feedback regulating module 7 is connected with the second input end of the voltage regulating inversion module 5, the output end of the power utilization module 8 is connected with the input end of the sampling output module 9, the output end of the sampling output module 9 is connected with the input end of the load switching module 10, and the output end of the load switching module 10 is connected with the second input end of the power utilization module 8.
In particular embodiments: referring to fig. 2, the commercial power module 1 inputs 220V ac by introducing a live wire and a zero wire, and is additionally provided with a first switch S1 and a second switch S2, which are controlled by the charge-discharge control module 4, and is closed in a low-peak period and sprung out in a high-peak period; the step-down rectifying and filtering module 2 comprises a first transformer W1, a rectifier T, a first capacitor C1, a second capacitor C2 and a first inductor L1, wherein the first transformer W1 performs step-down treatment, the rectifier T finishes alternating current conversion, and a filtering circuit formed by the first capacitor C1, the second capacitor C2 and the first inductor L1 finishes filtering treatment, so that 220V alternating current is finally converted into stable direct current; the energy storage module 3 comprises a first diode D1, a battery E1, a diode D2 and a third switch S3, wherein the third switch S3 is controlled to be sprung by the charge-discharge control module 4 during the low power peak period, the battery E1 is charged by the voltage input by the first diode D1, the third switch S3 is controlled to be closed by the charge-discharge control module 4 during the high power peak period, and the battery E1 outputs the voltage through the second diode D2 and the third switch S3; the charge-discharge control module 4 comprises a time relay J1 and a third diode D3, the time relay J1 can control the switch to be closed or to be sprung off based on time, and the time can be adjusted through the time relay J1; in addition, the switch can be controlled to be closed or sprung off based on a control device such as a singlechip.
In this embodiment: referring to fig. 3, the voltage-regulating inverter module 5 includes a first MOS transistor V1, a third capacitor C3, a second MOS transistor V2, a third MOS transistor V3, a fourth MOS transistor V4, a fifth MOS transistor V5, and a second transformer W2, wherein the D pole of the first MOS transistor V1 is connected to the output end of the energy storage module 3, the G pole of the first MOS transistor V1 is connected to the output end of the feedback regulation module 7, the S pole of the first MOS transistor V1 is connected to one end of the third capacitor C3, the D pole of the second MOS transistor V2, the D pole of the fourth MOS transistor V4, the other end of the third capacitor C3 is grounded, the S pole of the second MOS transistor V2 is connected to one end of the input side of the second transformer W2, the D pole of the third MOS transistor V3, the S pole of the third MOS transistor V3 is grounded, the S pole of the fifth MOS transistor V5 is grounded, the S pole of the second MOS transistor V2 is connected to the output end of the third MOS transistor V4, and the output end of the PWM signal is connected to the output end of the fourth MOS transistor V4.
The first PWM signal output device and the second PWM signal output device respectively output PWM1 and PWM2 signals, the first PWM signal output device and the second PWM signal output device can produce the PWM1 and PWM2 signals through an amplifier and an RC circuit, and also can produce the PWM1 and PWM2 signals through a singlechip, an inverter and other devices and the like and the RC circuit; the PWM1 and PWM2 signals are square wave signals with 50% complementary duty ratio, when one is in a high level, the other is in a low level, when the second MOS tube V2 and the fifth MOS tube V5 are conducted, the third MOS tube V3 and the fourth MOS tube V4 are cut off, when the second MOS tube V2 and the fifth MOS tube V5 are cut off, the third MOS tube V3 and the fourth MOS tube V4 are conducted, voltage is input through the first MOS tube V1, and square wave alternating current is formed on the input side of the second transformer W2 based on the conduction conditions of the second MOS tube V2, the third MOS tube V3, the fourth MOS tube V4 and the fifth MOS tube V5 and is amplified by the second transformer W2 and then output.
In another embodiment, the second MOS transistor V2, the third MOS transistor V3, the fourth MOS transistor V4, and the fifth MOS transistor V5 may be other switching transistors, such as an IGBT switching transistor.
In this embodiment: referring to fig. 3, the waveform conversion output module 6 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6, wherein one end of the first resistor R1 is connected to one end of the output side of the second transformer W2, the other end of the first resistor R1 is connected to one end of the fourth capacitor C4 and one end of the second resistor R2, the other end of the fourth capacitor C4 is connected to one end of the fifth capacitor C5, one end of the sixth capacitor C6, and the other end of the output side of the second transformer W2, the other end of the second resistor R2 is connected to the other end of the fifth capacitor C5 and one end of the third resistor R3, and the other end of the third resistor R3 is connected to the other end of the sixth capacitor C6, the input end of the feedback adjustment module 7, and the first input end of the power consumption module 8.
The first resistor R1, the fourth capacitor C4, the second resistor R2, the fifth capacitor C5, the third resistor R3 and the sixth capacitor C6 respectively form three groups of RC filter circuits, and square-wave alternating current is converted into sinusoidal alternating current to be output through the charge and discharge actions of the capacitors.
In another embodiment, the function generating chip can be used to convert square wave into sine wave; or converting the square wave into a sine wave by using a venturi bridge oscillation circuit.
In this embodiment: referring to fig. 3, the feedback adjustment module 7 includes a fourth diode D4, a fourth resistor R4, a first amplifier U1, a fifth resistor R5, a first potentiometer RP1, and a sixth resistor R6, wherein a positive electrode of the fourth diode D4 is connected to an output end of the waveform conversion output module 6, a negative electrode of the fourth diode D4 is connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to an inverting end of the first amplifier U1, an in-phase end of the first amplifier U1 is connected to a sliding end of the first potentiometer RP1, one end of the first potentiometer RP1 is grounded, the other end of the first potentiometer RP1 is connected to one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected to the power supply voltage VCC, an output end of the first amplifier U1 is connected to one end of the sixth resistor R6, and the other end of the sixth resistor R6 is connected to a second input end of the voltage adjustment inverter module 5.
The partial output voltage of the waveform conversion output module 6 is input to the inverting terminal of the first amplifier U1 through the fourth diode D4 and the fourth resistor R4, a voltage signal varying at a moment is formed at the inverting terminal of the first amplifier U1, and the larger the output voltage of the waveform conversion output module 6 is based on the determined reference voltage provided by the inverting terminal of the first amplifier U1, the smaller the output voltage of the waveform conversion output module 6 is in the output unit time of the first amplifier U1, the more the output high level time is in the output unit time of the first amplifier U1, so as to control the conducting state of the first MOS transistor V1, and the voltage magnitude after passing through the first MOS transistor V1 is changed, so that the output voltage magnitude of the waveform conversion output module 6 is finally changed.
In another embodiment, the first potentiometer RP1 may be replaced with a common resistor, where the potentiometer is provided to facilitate adjusting the in-phase terminal voltage of the first amplifier U1.
In this embodiment: referring to fig. 4, the power module 8 includes a fourth switch S4, a fifth switch S5, a household electrical appliance X, a seventh resistor R7, and a second potentiometer RP2, wherein the seventh resistor R7 and the second potentiometer RP2 together form an impedance load, one end of the fourth switch S4 is connected to the waveform conversion output module 6, one end of the fifth switch S5 is connected to the waveform conversion output module 6, the fourth switch S4 is connected to the first interface K1 or the second interface K2, the fifth switch S5 is connected to the third interface K3 or the fourth interface K4, the first interface K1 is connected to one end of the seventh resistor R7, the other end of the seventh resistor R7 is connected to one end of the second potentiometer RP2, the other end of the second potentiometer RP2 is connected to the third interface K3, the second interface K2 is connected to one end of the household electrical appliance X, and the other end of the household electrical appliance X is connected to the fourth interface K4.
Based on the power consumption peak period, the output voltage of the waveform conversion output module 6 is unstable when the battery E1 is initially powered, so that the power consumption module 8 is arranged, the fourth switch S4 is initially connected with the first interface K1, the fifth switch S5 is connected with the third interface K3, and the unstable voltage flows through the seventh resistor R7 and the second potentiometer RP2 to be consumed; when the output voltage of the waveform conversion output module 6 is stable, the control of the load switching module 10 is received at the moment, the fourth switch S4 is connected with the second interface K2, the fifth switch S5 is connected with the fourth interface K4, stable voltage is supplied to the household appliance X, the power consumption requirement is met, and the unstable voltage is prevented from affecting the work of the household appliance X by setting the consumption source to switch.
In another embodiment: the number of resistors can be increased appropriately.
In this embodiment: referring to fig. 4, the sampling output module 9 includes a fifth diode D5, a sixth diode D6, a seventh capacitor C7, an eighth diode D8, and an eighth resistor R8, wherein an anode of the fifth diode D5 is connected to one end of the second potentiometer RP2, an anode of the sixth diode D6 is connected to the other end of the second potentiometer RP2, a sliding end of the second potentiometer RP2 is grounded, a cathode of the fifth diode D5 is connected to a cathode of the sixth diode D6, one end of the seventh capacitor C7, a cathode of the eighth diode D8, the other end of the seventh capacitor C7 is grounded, an anode of the eighth diode D8 is connected to one end of the eighth resistor R8, an input end of the load switching module 10, and the other end of the eighth resistor R8 is grounded.
The fifth diode D5, the sixth diode D6, and the seventh capacitor C7 form a voltage sampling conversion circuit, which samples the voltage on the second potentiometer RP2, converts the sampled voltage into direct current, and outputs the direct current to the eighth diode D8 (zener diode), and when the output voltage of the waveform conversion output module 6 is stable, the voltage output to the eighth diode D8 forms a voltage on the eighth resistor R8 sufficient to drive the load switching module 10 to operate after the eighth diode D8 is turned on.
In another embodiment: the eighth diode D8 may be replaced by a comparator to determine whether the output voltage of the waveform conversion output module 6 is stable.
In this embodiment: referring to fig. 4, the load switching module 10 includes a thyristor Z1, a second relay J2, and a ninth diode D9, wherein an anode of the thyristor Z1 is connected to a supply voltage VCC, a control electrode of the thyristor Z1 is connected to an output end of the sampling output module 9, a cathode of the thyristor Z1 is connected to one end of the second relay J2, a cathode of the ninth diode D9, another end of the second relay J2 is grounded, and an anode of the ninth diode D9 is grounded.
After the voltage on the eighth resistor R8 reaches the turn-on voltage of the control electrode of the silicon controlled rectifier Z1, the silicon controlled rectifier Z1 is turned on, the second relay J2 is electrically controlled to control the connection status of the fourth switch S4 and the fifth switch S5, the original fourth switch S4 is connected with the first interface K1, the fifth switch S5 is connected with the third interface K3, the switching is that the fourth switch S4 is connected with the second interface K2, the fifth switch S5 is connected with the fourth interface K4, and 220V sine alternating current of the waveform conversion output module 6 is supplied to the household appliance X.
In another embodiment: the power supply voltage VCC here may be provided by the output voltage of the battery E1.
The working principle of the invention is as follows: the mains supply module 1 is used for outputting 220V alternating current in the low-peak period of power consumption; the step-down rectifying and filtering module 2 is used for converting 220V alternating current into direct current and outputting the direct current to the energy storage module 3; the energy storage module 3 is used for storing electric energy in the low power consumption peak period and outputting voltage in the high power consumption peak period; the charge-discharge control module 4 is used for controlling the output voltage of the mains supply module 1 and the energy storage module 3 to store electric energy in the low-peak period of electricity consumption; the power supply module 1 is controlled to stop outputting voltage and the energy storage module 3 is controlled to output voltage in the power utilization peak period; the voltage-regulating inversion module 5 is used for converting the output direct current of the energy storage module 3 into square-wave alternating current, and outputting the square-wave alternating current to the waveform conversion output module 6 after amplification; the waveform conversion output module 6 is used for converting the amplified square-wave alternating current into sinusoidal alternating current and outputting the sinusoidal alternating current to the power utilization module 8; the feedback regulation module 7 is used for sampling the sinusoidal alternating current output by the waveform conversion output module 6, obtaining feedback voltage, regulating the voltage output by the voltage regulation inversion module 5 to the waveform conversion output module 6 according to the feedback voltage, and finally controlling the waveform conversion output module 6 to output 220V sinusoidal alternating current; the power consumption module 8 is used for setting two consumption sources, one is an impedance load, the other is a household appliance X, the impedance load is connected with the power supply loop of the waveform conversion output module 6 in the initial period, and the household appliance X is not connected with the power supply loop of the waveform conversion output module 6; the sampling output module 9 is used for sampling the voltage condition of the impedance load, obtaining sampling voltage, judging whether the waveform conversion output module 6 outputs 220V sinusoidal alternating current or not according to the sampling voltage, and driving the load switching module 10 to work when the 220V sinusoidal alternating current is output; the load switching module 10 is used for controlling the impedance load not to be connected to the power supply loop of the waveform conversion output module 6 during operation, and the household appliance X is connected to the power supply loop of the waveform conversion output module 6.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A voltage regulation system for a consumer side energy store, the voltage regulation system comprising:
The mains supply module is used for outputting 220V alternating current in the low-peak period of power consumption;
The step-down rectifying and filtering module is used for converting 220V alternating current into direct current and outputting the direct current to the energy storage module;
the energy storage module is used for storing electric energy in a low power consumption peak period and outputting voltage in a high power consumption peak period;
the charge-discharge control module is used for controlling the output voltage of the mains supply module and the storage energy of the energy storage module in the low-peak period of electricity consumption; controlling the mains supply module to stop outputting voltage and the energy storage module to output voltage in the power utilization peak period;
The voltage-regulating inversion module is used for converting the output direct current of the energy storage module into square-wave alternating current, amplifying the square-wave alternating current and outputting the square-wave alternating current to the waveform conversion output module;
The waveform conversion output module is used for converting the amplified square wave alternating current into sinusoidal alternating current and outputting the sinusoidal alternating current to the power utilization module;
The feedback regulation module is used for sampling the sinusoidal alternating current output by the waveform conversion output module, obtaining feedback voltage, regulating the voltage output by the voltage regulation inversion module to the voltage of the waveform conversion output module according to the feedback voltage, and finally controlling the waveform conversion output module to output 220V sinusoidal alternating current;
The power utilization module is used for setting two consumption sources, one is an impedance load and the other is a household appliance, the impedance load is connected with a power supply loop of the waveform conversion output module in the initial period, and the household appliance is not connected with the power supply loop of the waveform conversion output module;
the sampling output module is used for sampling the voltage condition of the impedance load, obtaining sampling voltage, judging whether the waveform conversion output module outputs 220V sinusoidal alternating current or not according to the sampling voltage, and driving the load switching module to work when the 220V sinusoidal alternating current is output;
The load switching module is used for controlling the impedance load to be not connected with the power supply loop of the waveform conversion output module when in work, and the household appliance is connected with the power supply loop of the waveform conversion output module;
The output end of the mains supply module is connected with the input end of the buck rectifying and filtering module, the output end of the buck rectifying and filtering module is connected with the first input end of the energy storage module, the output end of the charge-discharge control module is connected with the input end of the mains supply module and the second input end of the energy storage module, the output end of the energy storage module is connected with the first input end of the voltage-regulating inversion module, the output end of the voltage-regulating inversion module is connected with the input end of the waveform conversion output module, the output end of the waveform conversion output module is connected with the first input end of the power utilization module and the input end of the feedback regulation module, the output end of the feedback regulation module is connected with the second input end of the voltage-regulating inversion module, the output end of the power utilization module is connected with the input end of the sampling output module, the output end of the sampling output module is connected with the input end of the load switching module, and the output end of the load switching module is connected with the second input end of the power utilization module.
2. The voltage regulation system of claim 1, wherein the voltage regulation inversion module comprises a first MOS tube, a third capacitor, a second MOS tube, a third MOS tube, a fourth MOS tube, a fifth MOS tube, and a second transformer, the D pole of the first MOS tube is connected to the output end of the energy storage module, the G pole of the first MOS tube is connected to the output end of the feedback regulation module, the S pole of the first MOS tube is connected to one end of the third capacitor, the D pole of the second MOS tube, the D pole of the fourth MOS tube, the other end of the third capacitor is grounded, the S pole of the second MOS tube is connected to one end of the input side of the second transformer, the D pole of the third MOS tube, the S pole of the third MOS tube is grounded, the G pole of the fifth MOS tube is connected to the G pole of the second MOS tube, the first MOS signal output device, the G pole of the fourth MOS tube is connected to the G pole of the third MOS tube, and the PWM signal output end of the second PWM converter is connected to the output end of the second transformer.
3. The system of claim 2, wherein the waveform conversion output module comprises a first resistor, a second resistor, a third resistor, a fourth capacitor, a fifth capacitor, and a sixth capacitor, one end of the first resistor is connected to one end of the output side of the second transformer, the other end of the first resistor is connected to one end of the fourth capacitor, one end of the second resistor, the other end of the fourth capacitor is connected to one end of the fifth capacitor, one end of the sixth capacitor, the other end of the output side of the second transformer, the other end of the second resistor is connected to the other end of the fifth capacitor, one end of the third resistor, and the other end of the third resistor is connected to the other end of the sixth capacitor, the input end of the feedback adjustment module, and the first input end of the power module.
4. The system of claim 1, wherein the feedback adjustment module comprises a fourth diode, a fourth resistor, a first amplifier, a fifth resistor, a first potentiometer, and a sixth resistor, wherein the positive electrode of the fourth diode is connected to the output end of the waveform conversion output module, the negative electrode of the fourth diode is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to the inverting end of the first amplifier, the in-phase end of the first amplifier is connected to the sliding end of the first potentiometer, one end of the first potentiometer is grounded, the other end of the first potentiometer is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to the power supply voltage, the output end of the first amplifier is connected to one end of the sixth resistor, and the other end of the sixth resistor is connected to the second input end of the voltage regulation inversion module.
5. The system of claim 1, wherein the power module comprises a fourth switch, a fifth switch, a household appliance, a seventh resistor, and a second potentiometer, the seventh resistor and the second potentiometer together form an impedance load, one end of the fourth switch is connected to the waveform conversion output module, one end of the fifth switch is connected to the waveform conversion output module, the fourth switch is connected to the first interface or the second interface, the fifth switch is connected to the third interface or the fourth interface, the first interface is connected to one end of the seventh resistor, the other end of the seventh resistor is connected to one end of the second potentiometer, the other end of the second potentiometer is connected to the third interface, the second interface is connected to one end of the household appliance, and the other end of the household appliance is connected to the fourth interface.
6. The system of claim 5, wherein the sampling output module comprises a fifth diode, a sixth diode, a seventh capacitor, an eighth diode, and an eighth resistor, the anode of the fifth diode is connected to one end of the second potentiometer, the anode of the sixth diode is connected to the other end of the second potentiometer, the sliding end of the second potentiometer is grounded, the cathode of the fifth diode is connected to the cathode of the sixth diode, one end of the seventh capacitor, the cathode of the eighth diode, the other end of the seventh capacitor is grounded, the anode of the eighth diode is connected to one end of the eighth resistor, the input end of the load switching module, and the other end of the eighth resistor is grounded.
7. The system of claim 1, wherein the load switching module comprises a thyristor, a second relay, and a ninth diode, the positive electrode of the thyristor is connected to the power supply voltage, the control electrode of the thyristor is connected to the output end of the sampling output module, the negative electrode of the thyristor is connected to one end of the second relay, the negative electrode of the ninth diode, the other end of the second relay is grounded, and the positive electrode of the ninth diode is grounded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311788019.2A CN117937560A (en) | 2023-12-22 | 2023-12-22 | Voltage regulating system for user side energy storage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311788019.2A CN117937560A (en) | 2023-12-22 | 2023-12-22 | Voltage regulating system for user side energy storage |
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| CN117937560A true CN117937560A (en) | 2024-04-26 |
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| CN202311788019.2A Pending CN117937560A (en) | 2023-12-22 | 2023-12-22 | Voltage regulating system for user side energy storage |
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