CN110829598A - Thing networking power conversion equipment - Google Patents
Thing networking power conversion equipment Download PDFInfo
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- CN110829598A CN110829598A CN201911144223.4A CN201911144223A CN110829598A CN 110829598 A CN110829598 A CN 110829598A CN 201911144223 A CN201911144223 A CN 201911144223A CN 110829598 A CN110829598 A CN 110829598A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
Abstract
The invention discloses an Internet of things power conversion device, which comprises a heat monitoring unit, a conversion device, a power input end, a power output end, a first electric quantity monitoring unit, a second electric quantity monitoring unit, a data collecting unit, a processor, an opinion production unit, an input unit, a simulation unit and intelligent equipment, wherein the heat monitoring unit is connected with the conversion device through a communication network; the electric quantity monitoring unit I and the electric quantity monitoring unit II are arranged between the electric input end and the electric output end and the conversion device respectively, so that the electric quantity of the input end and the electric quantity of the output end can be monitored in real time; meanwhile, the heat generation of the conversion device during power conversion is monitored in real time by means of a heat monitoring unit; and then, the data collection unit is used for analyzing the input electric quantity and the output electric quantity, and the comprehensive analysis is carried out by combining the numerical value generated by heat, so that the moment when the heat conversion efficiency becomes low due to aging or problems of the conversion device can be obtained, and a user is informed.
Description
Technical Field
The invention belongs to the field of power conversion, relates to an Internet of things power conversion technology, and particularly relates to an Internet of things power conversion device.
Background
Patent publication No. CN108631630A discloses a power conversion device including: a 1 st power conversion circuit that converts and outputs power; a 2 nd power conversion circuit connected to the 1 st power conversion circuit via the DC link unit, converting power and outputting the converted power to a load; a smoothing capacitor provided at an output part of the 1 st power conversion circuit and an input part of the 2 nd power conversion circuit; a 1 st common mode current extraction circuit provided at an input portion of the 1 st power conversion circuit; a 2 nd common mode current extraction circuit provided at an output part of the 2 nd power conversion circuit; a virtual neutral potential line connected to the 1 st and 2 nd common mode current extraction circuits; a DC link filter circuit having a Y-type capacitor; a 1 st common mode coil inserted in a path from the 1 st common mode current extraction circuit to a connection point of a Y-type capacitor on the DC link filter circuit; and a 2 nd common mode coil inserted into a path from a connection point of the Y-type capacitor to the 2 nd common mode current extraction circuit.
However, the patent does not provide a good solution for how to analyze the conversion efficiency of the power conversion device and how to monitor how to reduce the conversion efficiency due to some errors in the power conversion process; therefore, the present application provides a solution to this technical problem, given the many power conversion devices in the prior art.
Disclosure of Invention
The invention aims to provide an Internet of things power conversion device.
The purpose of the invention can be realized by the following technical scheme:
an Internet of things power conversion device comprises a heat monitoring unit, a conversion device, a power input end, a power output end, a first electric quantity monitoring unit, a second electric quantity monitoring unit, a data collecting unit, a processor, an opinion production unit, an input unit, a simulation unit and intelligent equipment;
the power input end is connected with the conversion device through a wire, and the conversion device is connected with the power output end through a wire; the power input end is used for inputting current, and converting the current by the aid of the conversion device, and then outputting the converted current by the aid of the power output end;
the heat monitoring unit is arranged on the conversion device and used for detecting real-time heat generated by the conversion device in real time; the heat monitoring unit is used for transmitting real-time heat to the processor through a Zigbee wireless communication network;
the first electric quantity monitoring unit is arranged between the power input end and the conversion device and used for acquiring input electric quantity Dsi, i is 1.. n;
the electric quantity monitoring unit I is used for transmitting the input electric quantity Dsi to the data collecting unit;
the second electric quantity monitoring unit is arranged between the conversion device and the power output end, and is used for acquiring the output electric quantity of the power output end in each conversion period and marking the output electric quantity as Dci, wherein i is 1.. n; the second electric quantity monitoring unit transmits the output electric quantity Dci to the data collecting unit;
the data collection unit is used for carrying out input and output analysis on the input electric quantity Dsi and the output electric quantity Dci, and the specific analysis steps are as follows:
s1: firstly, acquiring a real loss scalar Si, i is 1.. n; si ═ (Dsi-Dci)/Dsi; and Si corresponds to Dsi and Dci one by one;
s2: acquiring a real loss scalar Si;
s3: calculating the average value of the real-time Si, and marking the average value as P;
s4: calculating the stable value Wi of the current Si according to the formula when i Si exist,
in the formula, | Si-P | represents the absolute value of the difference of Si minus the value of P;
s5: when W is satisfiedi-Wi-1When the voltage is more than or equal to X1, generating a mutation signal at the moment, and specifically analyzing the electric quantity, wherein X1 is a preset value;
if S is presenti-Si-1<At 0, an efficiency improvement signal is generated, indicating that the amount of loss at this time is suddenly reduced by a large amount;
if Si-Si-1>0, generating an efficiency reduction signal; indicating a sudden increase in the amount of loss by a fraction; the loss amount is increased due to aging reasons or what mutation causes the electricity to be converted;
s6: recording the current moment, and marking the moment as the mutation moment;
the simulation unit is used for simulating all heating values generated by heating under the condition that the electric quantity is equal to the real loss scalar and the loss is equal to the real loss scalar in the time period; the data collection unit is also used for transmitting the real-loss scalar Si to the processor, and the processor is used for carrying out energy consumption conversion analysis on the real-time heat and the real-loss scalar Si by means of the simulation unit to obtain a heat burst signal and a heat reduction signal;
the data collecting unit is also used for transmitting an efficiency improving signal and an efficiency reducing signal to the processor when the efficiency improving signal and the efficiency reducing signal are generated, the processor is also used for transmitting the efficiency reducing signal, the heat burst signal and the heat reducing signal to the opinion generating unit, and the opinion generating unit receives the efficiency reducing signal, the heat burst signal and the heat reducing signal transmitted by the processor and automatically enters opinion comprehensive analysis to obtain an aging signal and an overhaul signal;
the opinion production unit is used for returning an aging signal to the processor when the aging signal is generated, and the processor automatically transmits 'aging of a current conversion device, low conversion efficiency and recommendation of word eye replacement' to the intelligent equipment when receiving the aging signal transmitted by the opinion production unit;
the opinion production unit is used for returning the processor to the opinion production unit when an overhaul signal is generated, and the processor can automatically transmit 'the reason that the current conversion device has unclear efficiency reduction and please overhaul' word eyes to the intelligent equipment when receiving the overhaul signal transmitted by the opinion production unit.
Further, the specific method for acquiring the input electric quantity Dsi is as follows:
the method comprises the following steps: setting a preset time period T1;
step two: marking each interval of time T1 as a transition period from the initial starting time;
step three: the input power for each conversion period is acquired and marked as Dsi, i ═ 1.. n.
Further, the specific analysis steps of the energy consumption conversion analysis are as follows:
s10: acquiring a real loss scalar Si;
s20: transmitting the real loss scalar Si to the simulation unit, simulating the heat generated by the simulation unit in the time period T1, and expressing the heat as a real heat amount Fi, i-1.. n; fi and Si are in one-to-one correspondence;
s30: acquiring real-time heat, and marking the real-time heat as Ri, i-1.. n; ri corresponds to Fi one by one;
s40: calculating the heat loss ratio Bri according to a formula, wherein Bri is 1-Ri/Fi; obtaining a plurality of groups of heat loss ratio Bri;
s50: calculating a real-time mean value Ps of the heat loss ratio Bri;
s60: a steady value Wri of the heat loss ratio Bri was calculated,
S70：when W isri-Wri-1When X2 is not less than the above range, if B is satisfied at the same timeri-Bri-1When the heat quantity is larger than or equal to X3, a heat quantity sudden increase signal is generated, otherwise, a heat quantity reduction signal is generated.
Further, the opinion comprehensive analysis comprises the following specific steps:
SS 1: when the efficiency reduction signal is generated and the heat burst signal is detected, generating an aging signal;
SS 2: when the heat burst signal is not detected while the efficiency decrease signal is generated, or the heat decrease signal is detected, a repair signal is generated.
Further, the processor is configured to automatically transmit "current conversion efficiency is improved, and it is recommended that the current conversion condition be subsequently adopted for conversion" to the smart device when the efficiency improvement signal is generated.
Further, the input unit is used for inputting all preset values X1, X2, X3 and T1.
Furthermore, the intelligent device is a portable mobile intelligent terminal for a user, and specifically is a mobile phone.
The invention has the beneficial effects that:
the electric quantity monitoring unit I and the electric quantity monitoring unit II are arranged between the electric input end and the electric output end and the conversion device respectively, so that the electric quantity of the input end and the electric quantity of the output end can be monitored in real time; meanwhile, the heat generation of the conversion device during power conversion is monitored in real time by means of a heat monitoring unit; then, the data collection unit is used for analyzing the input electric quantity and the output electric quantity, and the comprehensive analysis is carried out by combining the numerical value generated by heat, so that the moment when the heat conversion efficiency is lowered due to aging or problems of the conversion device can be obtained, and a user is informed; under other conditions, the conversion efficiency caused by aging of the non-conversion device can be intelligently judged to be low, and a user is reminded of maintenance attention; the application is simple and effective, and is easy to use.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, an internet-of-things power conversion device includes a heat monitoring unit, a conversion device, a power input end, a power output end, a first power monitoring unit, a second power monitoring unit, a data collecting unit, a processor, an opinion generating unit, an input unit, a simulation unit, and an intelligent device;
the power input end is connected with the conversion device through a wire, and the conversion device is connected with the power output end through a wire; the power input end is used for inputting current, and converting the current by the aid of the conversion device, and then outputting the converted current by the aid of the power output end;
the heat monitoring unit is arranged on the conversion device and used for detecting real-time heat generated by the conversion device in real time; the heat monitoring unit is used for transmitting real-time heat to the processor through a Zigbee wireless communication network;
the first electric quantity monitoring unit is arranged between the power input end and the conversion device and used for acquiring input electric quantity, and the specific acquisition method comprises the following steps:
the method comprises the following steps: setting a preset time period T1;
step two: marking each interval of time T1 as a transition period from the initial starting time;
step three: acquiring input electric quantity of each conversion period, and marking the input electric quantity as Dsi, i is 1.. n;
the electric quantity monitoring unit I is used for transmitting the input electric quantity Dsi to the data collecting unit;
the second electric quantity monitoring unit is arranged between the conversion device and the power output end, and is used for acquiring the output electric quantity of the power output end in each conversion period and marking the output electric quantity as Dci, wherein i is 1.. n; the second electric quantity monitoring unit transmits the output electric quantity Dci to the data collecting unit;
the data collection unit is used for carrying out input and output analysis on the input electric quantity Dsi and the output electric quantity Dci, and the specific analysis steps are as follows:
s1: firstly, acquiring a real loss scalar Si, i is 1.. n; si ═ (Dsi-Dci)/Dsi; and Si corresponds to Dsi and Dci one by one;
s2: acquiring a real loss scalar Si;
s3: calculating the average value of the real-time Si, and marking the average value as P;
s4: calculating the stable value Wi of the current Si according to the formula when i Si exist,
in the formula, | Si-P | represents the absolute value of the difference of Si minus the value of P;
s5: when W is satisfiedi-Wi-1When the voltage is more than or equal to X1, generating a mutation signal at the moment, and specifically analyzing the electric quantity, wherein X1 is a preset value;
if S is presenti-Si-1<0, an efficiency improvement signal is generated, indicating that the amount of losses is suddenly reduced by a large fraction;
if Si-Si-1>0, generating an efficiency reduction signal; indicating a sudden increase in the amount of loss by a fraction; the loss amount is increased due to aging reasons or what mutation causes the electricity to be converted;
s6: recording the current moment, and marking the moment as the mutation moment;
the simulation unit is used for simulating all heating values generated by heating under the condition that the electric quantity is equal to the real loss scalar and the loss is equal to the real loss scalar in the time period; the data collection unit is also used for transmitting the real-loss scalar Si to the processor, the processor is used for carrying out energy consumption conversion analysis on the real-time heat and the real-loss scalar Si by means of the simulation unit, and the specific analysis steps are as follows:
s10: acquiring a real loss scalar Si;
s20: transmitting the real loss scalar Si to the simulation unit, simulating the heat generated by the simulation unit in the time period T1, and expressing the heat as a real heat amount Fi, i-1.. n; fi and Si are in one-to-one correspondence;
s30: acquiring real-time heat, and marking the real-time heat as Ri, i-1.. n; ri corresponds to Fi one by one;
s40: calculating the heat loss ratio Bri according to a formula, wherein Bri is 1-Ri/Fi; obtaining a plurality of groups of heat loss ratio Bri;
s50: calculating a real-time mean value Ps of the heat loss ratio Bri;
s60: a steady value Wri of the heat loss ratio Bri was calculated,
s70: when W isri-Wri-1When X2 is not less than the above range, if B is satisfied at the same timeri-Bri-1When the heat quantity is more than or equal to X3, generating a heat quantity sudden increase signal, otherwise, generating a heat quantity reduction signal;
the data collecting unit is also used for transmitting the efficiency improving signal and the efficiency reducing signal to the processor when the efficiency improving signal and the efficiency reducing signal are generated, the processor is also used for transmitting the efficiency reducing signal, the heat burst signal and the heat reducing signal to the opinion generating unit, the opinion generating unit receives the efficiency reducing signal, the heat burst signal and the heat reducing signal transmitted by the processor and automatically enters opinion comprehensive analysis, and the specific analysis steps are as follows:
SS 1: when the efficiency reduction signal is generated and the heat burst signal is detected, generating an aging signal; at this time, the conversion efficiency is lower and lower due to the fact that the heat generated in the conversion process is increased due to the aging of components inside the conversion device or other reasons, and the device needs to be replaced;
SS 2: when the efficiency reduction signal is generated and the heat burst signal is not detected or the heat reduction signal is detected, generating a maintenance signal; at this moment, the loss in the electric quantity conversion process is not caused by heating, and the circuit needs to be overhauled;
the opinion production unit is used for returning an aging signal to the processor when the aging signal is generated, and the processor automatically transmits 'aging of a current conversion device, low conversion efficiency and recommendation of word eye replacement' to the intelligent equipment when receiving the aging signal transmitted by the opinion production unit;
the opinion production unit is used for returning the maintenance signal to the processor when the maintenance signal is generated, and the processor automatically transmits 'the reason why the current conversion device has the unknown efficiency reduction and please maintain' word eyes to the intelligent equipment when receiving the maintenance signal transmitted by the opinion production unit;
the processor is used for automatically transmitting current conversion efficiency improvement to the intelligent equipment when generating the efficiency improvement signal, and suggesting that the current conversion condition can be adopted for conversion subsequently.
The input unit is used for inputting all preset values X1, X2, X3 and T1.
The intelligent equipment is a portable mobile intelligent terminal of a user, and can be a mobile phone specifically.
When the power conversion device of the Internet of things works, firstly, the electric quantity of an input end and the electric quantity of an output end can be monitored in real time through a first electric quantity monitoring unit and a second electric quantity monitoring unit which are arranged between a power input end and a power output end of the power conversion device respectively; meanwhile, the heat generation of the conversion device during power conversion is monitored in real time by means of a heat monitoring unit; then, the data collection unit is used for analyzing the input electric quantity and the output electric quantity, and the comprehensive analysis is carried out by combining the numerical value generated by heat, so that the moment when the heat conversion efficiency is lowered due to aging or problems of the conversion device can be obtained, and a user is informed; under other conditions, the conversion efficiency caused by aging of the non-conversion device can be intelligently judged to be low, and a user is reminded of maintenance attention; the application is simple and effective, and is easy to use.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (7)
1. An Internet of things power conversion device is characterized by comprising a heat monitoring unit, a conversion device, a power input end, a power output end, a first electric quantity monitoring unit, a second electric quantity monitoring unit, a data collecting unit, a processor, an opinion production unit, an input unit, a simulation unit and intelligent equipment;
the power input end is connected with the conversion device through a wire, and the conversion device is connected with the power output end through a wire; the power input end is used for inputting current, and converting the current by the aid of the conversion device, and then outputting the converted current by the aid of the power output end;
the heat monitoring unit is arranged on the conversion device and used for detecting real-time heat generated by the conversion device in real time; the heat monitoring unit is used for transmitting real-time heat to the processor through a Zigbee wireless communication network;
the first electric quantity monitoring unit is arranged between the power input end and the conversion device and used for acquiring input electric quantity Dsi, i is 1.. n;
the electric quantity monitoring unit I is used for transmitting the input electric quantity Dsi to the data collecting unit;
the second electric quantity monitoring unit is arranged between the conversion device and the power output end, and is used for acquiring the output electric quantity of the power output end in each conversion period and marking the output electric quantity as Dci, wherein i is 1.. n; the second electric quantity monitoring unit transmits the output electric quantity Dci to the data collecting unit;
the data collection unit is used for carrying out input and output analysis on the input electric quantity Dsi and the output electric quantity Dci, and the specific analysis steps are as follows:
s1: firstly, acquiring a real loss scalar Si, i is 1.. n; si ═ (Dsi-Dci)/Dsi; and Si corresponds to Dsi and Dci one by one;
s2: acquiring a real loss scalar Si;
s3: calculating the average value of the real-time Si, and marking the average value as P;
s4: calculating the stable value Wi of the current Si according to the formula when i Si exist,
in the formula, | Si-P | represents the absolute value of the difference of Si minus the value of P;
s5: when W is satisfiedi-Wi-1When the pressure is more than or equal to X1, the product is producedGenerating a mutation signal, and specifically analyzing the electric quantity, wherein X1 is a preset value;
if S is presenti-Si-1<0, generating an efficiency improvement signal;
if Si-Si-1>0, generating an efficiency reduction signal;
s6: recording the current moment, and marking the moment as the mutation moment;
the simulation unit is used for simulating all heating values generated by heating under the condition that the electric quantity is equal to the real loss scalar and the loss is equal to the real loss scalar in the time period; the data collection unit is also used for transmitting the real-loss scalar Si to the processor, and the processor is used for carrying out energy consumption conversion analysis on the real-time heat and the real-loss scalar Si by means of the simulation unit to obtain a heat burst signal and a heat reduction signal;
the data collecting unit is also used for transmitting an efficiency improving signal and an efficiency reducing signal to the processor when the efficiency improving signal and the efficiency reducing signal are generated, the processor is also used for transmitting the efficiency reducing signal, the heat burst signal and the heat reducing signal to the opinion generating unit, and the opinion generating unit receives the efficiency reducing signal, the heat burst signal and the heat reducing signal transmitted by the processor and automatically enters opinion comprehensive analysis to obtain an aging signal and an overhaul signal;
the opinion production unit is used for returning an aging signal to the processor when the aging signal is generated, and the processor automatically transmits 'aging of a current conversion device, low conversion efficiency and recommendation of word eye replacement' to the intelligent equipment when receiving the aging signal transmitted by the opinion production unit;
the opinion production unit is used for returning the processor to the opinion production unit when an overhaul signal is generated, and the processor can automatically transmit 'the reason that the current conversion device has unclear efficiency reduction and please overhaul' word eyes to the intelligent equipment when receiving the overhaul signal transmitted by the opinion production unit.
2. The internet-of-things power conversion device according to claim 1, wherein the specific method for acquiring the input electric quantity Dsi is as follows:
the method comprises the following steps: setting a preset time period T1;
step two: marking each interval of time T1 as a transition period from the initial starting time;
step three: the input power for each conversion period is acquired and marked as Dsi, i ═ 1.. n.
3. The internet of things power conversion device according to claim 1, wherein the specific analysis steps of the energy consumption conversion analysis are as follows:
s10: acquiring a real loss scalar Si;
s20: transmitting the real loss scalar Si to the simulation unit, simulating the heat generated by the simulation unit in the time period T1, and expressing the heat as a real heat amount Fi, i-1.. n; fi and Si are in one-to-one correspondence;
s30: acquiring real-time heat, and marking the real-time heat as Ri, i-1.. n; ri corresponds to Fi one by one;
s40: calculating the heat loss ratio Bri according to a formula, wherein Bri is 1-Ri/Fi; obtaining a plurality of groups of heat loss ratio Bri;
s50: calculating a real-time mean value Ps of the heat loss ratio Bri;
s60: a steady value Wri of the heat loss ratio Bri was calculated,
s70: when W isri-Wri-1When X2 is not less than the above range, if B is satisfied at the same timeri-Bri-1When the heat quantity is larger than or equal to X3, a heat quantity sudden increase signal is generated, otherwise, a heat quantity reduction signal is generated.
4. The power conversion device of the internet of things as claimed in claim 1, wherein the opinion comprehensive analysis comprises the following steps:
SS 1: when the efficiency reduction signal is generated and the heat burst signal is detected, generating an aging signal;
SS 2: when the heat burst signal is not detected while the efficiency decrease signal is generated, or the heat decrease signal is detected, a repair signal is generated.
5. The internet-of-things power conversion device according to claim 1, wherein the processor is configured to automatically transmit "current conversion efficiency improvement, suggesting that the conversion condition can be subsequently adopted for conversion" to the smart device when generating the efficiency improvement signal.
6. The Internet of things power conversion device of claim 1, wherein the input unit is used for inputting all preset values X1, X2, X3 and T1.
7. The internet-of-things power conversion device according to claim 1, wherein the smart device is a portable mobile smart terminal for a user, specifically a mobile phone.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111779202A (en) * | 2020-06-16 | 2020-10-16 | 周琮 | Green building ecological energy-saving roof |
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| CN108631630A (en) * | 2017-03-21 | 2018-10-09 | 株式会社东芝 | Power inverter and power conversion system |
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