CN203056684U - Intelligent power control unit for achieving intellectualization and automatic current-sharing control - Google Patents

Intelligent power control unit for achieving intellectualization and automatic current-sharing control Download PDF

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Publication number
CN203056684U
CN203056684U CN2012206750313U CN201220675031U CN203056684U CN 203056684 U CN203056684 U CN 203056684U CN 2012206750313 U CN2012206750313 U CN 2012206750313U CN 201220675031 U CN201220675031 U CN 201220675031U CN 203056684 U CN203056684 U CN 203056684U
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module
chip
power
intelligent
control unit
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陈继军
刘智栋
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Sichuan Weilide Energy Co ltd
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LESHAN CHENGJIA ELECTRIC CO Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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Abstract

The utility model relates to an intelligent power control unit for achieving intellectualization and automatic current-sharing control. The intelligent power control unit comprises a central processor control module, a communication module, a power supply module, a trigger module, a sampling module, a signal monitoring module and a temperature detection module, wherein the central processor control module is a DSP chip arranged on a CPU mainboard, the communication module is connected with an ECAN interface of the DSP chip, the power supply module is connected to pins of the DSP chip through a TPS73HD301 chip, the trigger module is connected with a pulse width modulation (PWM) module of the DSP chip, the sampling module is connected with an analog-to-digital converter (ADC) of the DSP chip, and the signal monitoring module is connected with a general purpose input/output (GPIO) interface of the DSP chip. The intelligent power control unit provided by the utility model is used in cooperation with a master control regulation system of a high-power rectification device so as to achieve functions of phase-shift triggering and power device monitoring, and a CAN bus is used for complete the communication between cabinets, thereby realizing the automatic current-sharing between power cabinets in the electronic level and completing the monitoring of the power cabinets.

Description

A kind of intelligent power control unit of realizing intellectuality and automatic current equalizing control
Technical field
The utility model relates to the high power DC commutation technique, particularly a kind of intelligent power control unit of realizing intellectuality and automatic current equalizing control.
Background technology
Problems such as the ubiquity monitoring function is incomplete in the power cabinet of the high power DC commutation system of domestic production at present, and the communication technology and detection technique are backward can't realize intellectuality and automatic current equalizing, are in particular in the following aspects:
1, equal flow problem: for the power cabinet of a plurality of parallel runnings general long line current-sharing, reactor current-sharing, and the mode such as magnet ring current-sharing of adopting at present, above current-sharing mode all must cooperate the thyristor component parameters, otherwise current-sharing effect possibility is unsatisfactory.These current-sharing measures propose higher requirement to quality and the quantity of spare part on the one hand; On the other hand, the passing of time at any time, the characteristic of thyristor might change, and the contact resistance of power cabinet major loop also might change, and these factors all can cause the variation that electric current distributes, and influence the current-sharing effect;
2, the audit function of power cabinet seldom often only checks the contact of blower fan and fast acting fuse, as for the whether then rare detection such as normal of the size of other signal such as brachium pontis electric current, thyristor temperature, trigger impulse, even detects;
3, adopt rigid line to connect between traditional power cabinet and the regulating system, owing to power cabinet and regulating system have certain distance, pulse is interfered easily and influences output;
4, power cabinet is the isolated node of a rectifying device, can only passively accept the order of master control system, does not contact with other power cabinet, and the state of power cabinet generally adopts relay node mode to transmit, and causes wiring complexity in the cabinet.
The utility model content
The utility model is for solving the problems of the technologies described above, a kind of intelligent power control unit intelligent and automatic current equalizing control of realizing is provided, realized in high power DC rectifying device power cabinet increasing designed have communication, the intelligent power control unit of monitoring capability, high speed detection computing, controller by advanced digital processing unit has solved control problems such as power cabinet high speed detection control, communication function, signal monitoring, triggering and conducting supervision and signal interference, realize intellectuality and the automatic current equalizing control of commutation system power cabinet, strengthened the robustness of system.
The technical solution of the utility model is as follows:
A kind of intelligent power control unit of realizing intellectuality and automatic current equalizing control, it is characterized in that: comprise central processing unit control module, communication module, power module, trigger module, sampling module, signal monitoring module, temperature detecting module, the central processing unit control module is connected respectively with communication module, power module, trigger module, sampling module, signal monitoring module, described central processing unit control module adopts dsp chip, is arranged on the cpu motherboard; Communication module connects the enhanced controller LAN ECAN interface of dsp chip, power module connects on the pin of dsp chip by special-purpose TPS73HD301 chip, trigger module connects the pulse width modulation module PWM of dsp chip, sampling module connects the analog to digital converter ADC of dsp chip, and the signal monitoring module connects the output interface GPIO of dsp chip.
The dsp chip that described central processing unit control module adopts can be 32 floating-point operation DSP TMS320F28335 chips that TI company of Texas Instruments releases, high speed processing ability with 150MHz, possess 32 floating point processing units, 6 direct memory visit DMA passages are supported analog to digital converter ADC, multichannel buffer serial port McBSP and external memory interface EMIF, nearly 18 tunnel PWM output is arranged, wherein have 6 the tunnel to be the distinctive more high-precision pulse width modulation module PWM output of TI (HRPWM), two narrow trigger impulses are directly produced by the timer of chip internal, and the trigger impulse precision can reach 20000 yards/180.
Described intelligent power control unit is arranged in the power cabinet of high power DC rectifying device, as power cabinet control core.
Described communication module disposes the CAN interface of MODBUS agreement, PROFIBUS agreement, the intelligent power control unit is by the main control cabinet regulating and controlling systems exchange information of CAN interface and the high power DC rectifying device of described communication module, accept master control regulating system control command, satisfy communicating requirement.
Described communication module adopts the ISO-1050 chip of TI company of Texas Instruments as the main devices of communication module, and this device allows to guarantee under the very big common-mode voltage variation continual communication.Communication module provides the high-speed data communication speed of 40kbps-1Mbps, and every bus can be supported nearly 110 nodes simultaneously.The ESD protective capacities that strengthens make this module can bear up to ± 4KV is withstand voltage, and can mode locking or damaged phenomenon, make the anti-tampering ability of whole communication module strengthen greatly.
Described power module adopts the Switching Power Supply of excellent performance to cooperate the power source special chip, external ac power source is through Switching Power Supply output+5V, this output again by special-purpose TPS73HD301 chip provide as required+3.3V ,+power supplys such as 1.9V, supplying with described dsp chip uses, insulating power supply primary time class F insulation is more than 3000V, to satisfy anti-electrical property and jamproof requirement, meet the GB/T15290 standard-required.
Described trigger module comprises optocoupler, field effect transistor, pulse isolation transformer (elementary class F insulation is more than 3000V), optocoupler connects field effect transistor, field effect transistor connects pulse isolation transformer, and pulse isolation transformer is isolated the amplification back with pulse and triggered thyristor.Its basic principle of all pulse isolation transformers is identical with general common transformer (as power transformer, power transformer etc.), but is distinguishing with regard to the magnetization process this point of magnetic core:
(1) pulse isolation transformer is a transformer that is operated in the transient state, that is to say that pulse process took place in the of short duration time, is a square wave that the top is level and smooth, and general common transformer is to be operated in the constant continuously magnetization, and its alternating signal is to change by sinusoidal waveform;
(2) pulse signal is the repetition period, certain intervals, and have only the voltage of negative or positive electrode, and the common transformer alternating signal repeats to change continuously, the existing positive negative magnitude of voltage that also has.
Described temperature detecting module can reach the resolution of 0.0625 ° of C, with this resolution the thyristor temperature is monitored and digitlization; Temperature detecting module comprises temperature sensor chip, the temperature signal that records is converted into digital quantity by 13 analog to digital converter ADC on the temperature sensor chip, digital quantity is sent to the CPU of intelligent power control unit by the data/address bus I2C interface of temperature sensor chip.This temperature sensor chip can adopt the ADT7420 chip, and this chip can provide breakthrough performance in wideer industrial temperature scope.
Described sampling module comprises synchronous voltage signal testing circuit and direct current signal testing circuit, the detected synchronous voltage signal of synchronous voltage signal testing circuit is behind the step-down plastic filter circuit, send to the CPU capture module of intelligent power control unit through the conditioning discharge circuit, the detected direct current signal of d. c. voltage signal testing circuit is changed the CPU that digital quantity is sent to the intelligent power control unit through 24bit A/D chip again behind the conditioning discharge circuit simultaneously, calculates synchronizing voltage phase place and pulse output angle.
The signal monitoring module is delivered to CPU input and output GPIO interface with thyristor conducting monitored state, fan operation state and a series of switching value of fuse alarm signal, quantity of state, CPU sends to the main control cabinet regulating and controlling system of high power DC rectifying device with quantity of state by the CAN interface of communication module, is convenient to monitor.
This intelligent power control unit high power DC rectifying device in conventional electric power generating excitation system and metallurgical, chemical industry is used more.
Operation principle of the present utility model is as follows:
The intelligent power control unit is as the control core of high power DC rectifying device power cabinet, the main function for monitoring of realizing phase shift triggering and power device, connect by the CAN bus, the CAN bus architecture is become a intelligent node in the system, and finish between cabinet by the CAN bus and to communicate by letter, can realize automatic current equalizing between power cabinet at electron level, and finish the monitoring to power cabinet.Adopt the ISO-1050 communication chip of TI company of Texas Instruments as the main devices of CAN communication module, withstand voltage, anti-tampering ability strengthens greatly;
Intelligent power control unit in the power cabinet receives the control signal of high power DC rectification main control cabinet regulating system and triggers control signal, undertaken in real time by the direct current of the electrical quantity sensor in the power cabinet to power cabinet simultaneously, quick sampling, sampled signal is sent to the intelligent power control unit, analyzed the current-sharing situation of each power cabinet by the intelligent power control unit, after need adjusting the trigger angle of correction, this power cabinet issues rectifier cell by calculating in real time, changing the triggering angle all finishes in 5ms, dynamic characteristic is outstanding, make the direct current output of each power cabinet reach balanced fast, thereby realize the automatic current equalizing control of power cabinet in the rectifying device.
The beneficial effects of the utility model are as follows:
The utility model and high power DC rectifying device master control regulating system are used, the intelligent power control unit is mainly used in realizing the function for monitoring of phase shift triggering and power device, connect by the CAN bus between them, the CAN bus architecture is become a intelligent node in the system, and finish between cabinet by it and to communicate by letter, can realize automatic current equalizing between power cabinet at electron level, and finish the monitoring to power cabinet; By the sampling to direct voltage and the direct current of power cabinet, sampled signal is sent to the intelligent power control unit, central processing unit in the intelligent power control unit can calculate real-time trigger impulse angle, when high power DC rectifying device master control regulating system breaks down or CAN communication when going wrong, the alternate channel that the intelligent power control unit can be used as the master control regulating system puts into operation, send trigger impulse, make power cabinet continue operate as normal; Data/address bus, address bus, the control bus of dsp chip all in cpu motherboard, have improved antijamming capability in the intelligent power control unit; Software is slice not, and namely program is in operation does not need to call to peripheral hardware, guarantees high speed, the reliability service of program with this; When the CAN communication occurs unusual or master control regulating system fault and after can not get triggering angle α, the intelligent power control unit is calculated according to direct voltage, the galvanometer oneself gathered and is triggered angle α, through amplifying and isolated loop triggering thyristor, keep the stable operation of commutation system; The intelligent power control unit also possesses broken string, the phase sequence judgement of brachium pontis current detecting, triggering and conducting supervision, synchronizing signal, functions such as fast acting fuse node, fan operation, thyristor temperature monitoring; Can improve the reliability of commutation system greatly by the utility model, realize intellectuality and the automatic current equalizing of power cabinet in the commutation system.
Description of drawings
Fig. 1 is used for the composition structural representation of high power DC rectifying device for the utility model
Fig. 2 is the structured flowchart of intelligent power control unit of the present utility model
Fig. 3 is the structural representation of communication module of the present utility model
Fig. 4 is the structural representation of power module of the present utility model
Fig. 5 is the structural representation of trigger element module of the present utility model
Fig. 6 is the structural representation of temperature detecting module of the present utility model
Wherein, Reference numeral is: 1 central processing unit control module, 2 communication modules, 3 power modules, 4 trigger modules, 5 sampling modules, 6 signal monitoring modules, 7 temperature detecting module.
Embodiment
As shown in Figure 1, the high power DC rectifying device comprises main control cabinet, power cabinet in parallel, demagnetization cabinet, wherein adopts the intelligent power control unit to control core as power cabinet in the power cabinet.Intelligent power control unit in high power DC rectifying device master control regulating system and the power cabinet is used; the master control regulating system realizes sampling, calculating, the limiting protecting function of rectifying device; the intelligent power control unit is mainly realized the function for monitoring of phase shift triggering and power device; connect by the CAN bus between them; the CAN bus architecture is become a intelligent node in the system; and finish between cabinet by it and to communicate by letter; can realize automatic current equalizing between power cabinet at electron level, and finish the monitoring to power cabinet.Adopt the ISO-1050 communication chip of TI company as the main devices of CAN communication module 2, withstand voltage, anti-tampering ability strengthens greatly.
As shown in Figure 2, be used for realizing intelligent power control unit intelligent and automatic current equalizing control, comprise central processing unit control module 1, communication module 2, power module 3, trigger module 4, sampling module 5, signal monitoring module 6, temperature detecting module 7, central processing unit control module 1 is connected respectively with communication module 2, power module 3, trigger module 4, sampling module 5, signal monitoring module 6, described central processing unit control module 1 adopts dsp chip, is arranged on the cpu motherboard; Communication module 2 connects the enhanced controller LAN ECAN interface of dsp chip, power module 3 connects on the pin of dsp chip by special-purpose TPS73HD301 chip, trigger module 4 connects the pulse width modulation module PWM of dsp chip, sampling module 5 connects the analog to digital converter ADC of dsp chip, and signal monitoring module 6 connects the output interface GPIO of dsp chip.
The dsp chip that described central processing unit control module 1 adopts can be 32 floating-point operation DSP TMS320F28335 chips that TI company of Texas Instruments releases, high speed processing ability with 150MHz, possess 32 floating point processing units, 6 direct memory visit DMA passages are supported analog to digital converter ADC, multichannel buffer serial port McBSP and external memory interface EMIF, nearly 18 tunnel PWM output is arranged, wherein have 6 the tunnel to be the distinctive more high-precision pulse width modulation module PWM output of TI (HRPWM), two narrow trigger impulses are directly produced by the timer of chip internal, and the trigger impulse precision can reach 20000 yards/180.
As shown in Figure 3, described intelligent power unit control system communication module 2 disposes the CAN interface communication of MODBUS agreement, PROFIBUS agreement, the intelligent power unit control system is by the main control cabinet regulating and controlling systems exchange information of this communication module 2CAN interface and high power DC rectifying device, accept master control regulating system control command, satisfy communicating requirement.
Described communication module 2 adopts the ISO-1050 chip of TI company of Texas Instruments as the main devices of communication module 2, and this device allows to guarantee under the very big common-mode voltage variation continual communication.Communication module 2 provides the high-speed data communication speed of 40kbps-1Mbps, and every bus can be supported nearly 110 nodes simultaneously.The ESD protective capacities that strengthens make this module can bear up to ± 4KV is withstand voltage, and can mode locking or damaged phenomenon, make whole communication module 2 anti-tampering abilities strengthen greatly.
As shown in Figure 4, described power module 3 adopts the Switching Power Supply of excellent performance to cooperate the power source special chip, external ac power source is through Switching Power Supply output+5V, this output again by special-purpose TPS73HD301 chip provide as required+3.3V ,+power supplys such as 1.9V, supplying with intelligent power control unit dsp chip uses, insulating power supply primary time class F insulation to satisfy anti-electrical property and jamproof requirement, meets the GB/T15290 standard-required more than 3000V.
As shown in Figure 5, described trigger module 4 comprises optocoupler, field effect transistor, pulse isolation transformer (elementary class F insulation is more than 3000V), optocoupler connects field effect transistor, and field effect transistor connects pulse isolation transformer, and pulse isolation transformer is isolated the amplification back with pulse and triggered thyristor.Its basic principle of all pulse isolation transformers is identical with general common transformer (as power transformer, power transformer etc.), but is distinguishing with regard to the magnetization process this point of magnetic core:
(1) pulse isolation transformer is a transformer that is operated in the transient state, that is to say that pulse process took place in the of short duration time, is a square wave that the top is level and smooth, and general common transformer is to be operated in the constant continuously magnetization, and its alternating signal is to change by sinusoidal waveform;
(2) pulse signal is the repetition period, certain intervals, and have only the voltage of negative or positive electrode, and the common transformer alternating signal repeats to change continuously, the existing positive negative magnitude of voltage that also has.
As shown in Figure 6, described temperature detecting module 7 comprises temperature sensor chip, and this temperature detecting module 7 can reach the resolution of 0.0625 ° of C, with this resolution the thyristor temperature is monitored and digitlization.The temperature signal that records is converted into digital quantity by 13 analog to digital converter ADC on the temperature sensor chip, digital quantity is sent to the CPU of intelligent power control unit by temperature sensor chip data/address bus I2C interface.This temperature sensor chip can adopt the ADT7420 chip, and this chip can provide breakthrough performance in wideer industrial temperature scope.
Described sampling module 5 comprises that synchronous voltage signal detects and direct current signal detects, synchronous voltage signal is behind the step-down shaping filter, send to the CPU capture module of intelligent power control unit through the conditioning discharge circuit, direct current signal is changed the CPU that digital quantity is sent to the intelligent power control unit through 24bit A/D chip again after the conditioning amplifier simultaneously, calculates synchronizing voltage phase place and pulse output angle.
Signal monitoring module 6 is delivered to CPU input and output GPIO interface with thyristor conducting monitored state, fan operation state and a series of switching value of fuse alarm signal, quantity of state, CPU sends to the main control cabinet regulating and controlling system of high power DC rectifying device with quantity of state by the CAN interface of communication module, is convenient to monitor.
This intelligent power control unit high power DC rectifying device in conventional electric power generating excitation system and metallurgical, chemical industry is used more.
Operation principle of the present utility model is as follows:
The intelligent power control unit is as the control core of high power DC rectifying device power cabinet, the main function for monitoring of realizing phase shift triggering and power device, connect by the CAN bus, the CAN bus architecture is become a intelligent node in the system, and finish between cabinet by the CAN bus and to communicate by letter, can realize automatic current equalizing between power cabinet at electron level, and finish the monitoring to power cabinet.Adopt the ISO-1050 communication chip of TI company of Texas Instruments as the main devices of CAN communication module 2, withstand voltage, anti-tampering ability strengthens greatly;
Intelligent power control unit in the power cabinet receives the control signal of high power DC rectification main control cabinet regulating system and triggers control signal, undertaken in real time by the direct current of the electrical quantity sensor in the power cabinet to power cabinet simultaneously, quick sampling, sampled signal is sent to the intelligent power control unit, analyzed the current-sharing situation of each power cabinet by the intelligent power control unit, after need adjusting the trigger angle of correction, this power cabinet issues rectifier cell by calculating in real time, changing the triggering angle all finishes in 5ms, dynamic characteristic is outstanding, make the direct current output of each power cabinet reach balanced fast, thereby realize the automatic current equalizing control of power cabinet in the rectifying device.

Claims (8)

1. realize intelligent power control unit intelligent and automatic current equalizing control for one kind, it is characterized in that: comprise central processing unit control module, communication module, power module, trigger module, sampling module, signal monitoring module, temperature detecting module, the central processing unit control module is connected respectively with communication module, power module, trigger module, sampling module, signal monitoring module, described central processing unit control module adopts dsp chip, is arranged on the cpu motherboard; Communication module connects the enhanced controller LAN ECAN interface of dsp chip, power module connects on the pin of dsp chip by special-purpose TPS73HD301 chip, trigger module connects the pulse width modulation module PWM of dsp chip, sampling module connects the analog to digital converter ADC of dsp chip, and the signal monitoring module connects the output interface GPIO of dsp chip; The dsp chip that described central processing unit control module adopts adopts DSP TMS320F28335 chip.
2. a kind of intelligent power control unit intelligent and that automatic current equalizing is controlled of realizing according to claim 1, it is characterized in that: described intelligent power control unit is arranged in the power cabinet of high power DC rectifying device.
3. a kind of intelligent power control unit intelligent and that automatic current equalizing is controlled of realizing according to claim 2, it is characterized in that: described communication module disposes the CAN interface of MODBUS agreement, PROFIBUS agreement, and the CAN interface is connected with the main control cabinet of high power DC rectifying device.
4. according to claim 1 or 3 described a kind of intelligent power control units intelligent and automatic current equalizing control of realizing, it is characterized in that: described communication module adopts the ISO-1050 chip.
5. according to claim 1 or 3 described a kind of intelligent power control units intelligent and automatic current equalizing control of realizing, it is characterized in that: described power module comprises Switching Power Supply and power source special chip, and described power source special chip adopts the TPS73HD301 chip; The input of Switching Power Supply connects AC power, and the output of Switching Power Supply connects the TPS73HD301 chip, and the TPS73HD301 chip connects dsp chip.
6. according to claim 1 or 3 described a kind of intelligent power control units intelligent and automatic current equalizing control of realizing, it is characterized in that: described trigger module comprises optocoupler, field effect transistor, pulse isolation transformer, optocoupler connects field effect transistor, and field effect transistor connects pulse isolation transformer.
7. according to claim 1 or 3 described a kind of intelligent power control units intelligent and automatic current equalizing control of realizing, it is characterized in that: described temperature detecting module comprises temperature sensor chip, temperature sensor chip has 13 analog to digital converter ADC and data/address bus I2C interface, and the data/address bus I2C interface of temperature sensor chip is connected to the CPU of intelligent power control unit; Described temperature sensor chip adopts the ADT7420 chip.
8. according to claim 1 or 3 described a kind of intelligent power control units intelligent and automatic current equalizing control of realizing, it is characterized in that: described sampling module comprises synchronous voltage signal testing circuit and direct current signal testing circuit, the synchronous voltage signal testing circuit is connected with the step-down plastic filter circuit, the step-down plastic filter circuit is connected with the conditioning discharge circuit, and the conditioning discharge circuit is connected to the CPU capture module of intelligent power control unit; The d. c. voltage signal testing circuit is connected with the conditioning discharge circuit simultaneously, and the conditioning discharge circuit is connected to 24bit A/D chip, is connected to the CPU of intelligent power control unit by 24bit A/D chip.
CN2012206750313U 2012-12-10 2012-12-10 Intelligent power control unit for achieving intellectualization and automatic current-sharing control Expired - Lifetime CN203056684U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103023145A (en) * 2012-12-10 2013-04-03 乐山晟嘉电气有限公司 Intelligent power control unit for achieving intelligent and automatic current-sharing control
CN104600830A (en) * 2014-12-31 2015-05-06 华为技术有限公司 Current sharing method and system of power supply module and manager

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103023145A (en) * 2012-12-10 2013-04-03 乐山晟嘉电气有限公司 Intelligent power control unit for achieving intelligent and automatic current-sharing control
CN104600830A (en) * 2014-12-31 2015-05-06 华为技术有限公司 Current sharing method and system of power supply module and manager

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Pledgor: Leshan Energy Saving Joy Electric Co.,Ltd.

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Address after: 614000 No. three, Lego Road, hi tech Zone, Sichuan, Leshan

Patentee after: LESHAN SHENGJIA ELECTRIC Co.,Ltd.

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Patentee before: Leshan Energy Saving Joy Electric Co.,Ltd.

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