CN106533174A - Dual-circuit chopping-wave and voltage-regulating power electronic module - Google Patents
Dual-circuit chopping-wave and voltage-regulating power electronic module Download PDFInfo
- Publication number
- CN106533174A CN106533174A CN201611243572.8A CN201611243572A CN106533174A CN 106533174 A CN106533174 A CN 106533174A CN 201611243572 A CN201611243572 A CN 201611243572A CN 106533174 A CN106533174 A CN 106533174A
- Authority
- CN
- China
- Prior art keywords
- pwm
- way
- signal
- circuit
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to a dual-circuit chopping-wave and voltage-regulating power electronic module. The power electronic module comprises a voltage-regulating signal interface circuit used for receiving two paths of voltage signals, a PWM control circuit used for outputting two paths of PWM control signals, a driving circuit used for outputting four paths of PWM driving signals, a dual-circuit synchronous rectifying BUCK circuit used for outputting two paths of high-frequency chopping-wave PWM voltages, and a voltage and current sampling circuit used for collecting two paths of high-frequency chopping-wave PWM output voltage signals. The power electronic module adopts two-circuit PWM independent control and two-circuit chopping-wave and voltage-regulating circuit integration; the average output voltage is controlled by adjusting duty ratio; the rotary speeds of a vehicle-mounted air conditioner evaporation fan and a condensation fan are regulated flexibly; and in addition, the power electronic module is small in size, compact in structure, efficient, convenient to install, and capable of promoting resource optimization configuration of a vehicle-mounted system.
Description
Technical field
The present invention relates to a kind of electric power electronic module of two-way chopper control, belongs to vehicle-mounted DC-DC power source technical field.
Background technology
New-energy automobile enters the high speed development stage at present, and country puts into effect various encouragement policies and supports sending out for new-energy automobile
Exhibition.Energy-saving and emission-reduction, environmental protection are significant.New forms of energy on-board air conditioner is important part and larger energy consumption system
System, be improve new-energy automobile endurance, saves energy, it is necessary to mounted air conditioner system is risen using power-saving technology
Level, drive compressor of air conditioner for example with variable-frequency driving technique, driven using direct current chopping regulating speed air conditioner condensation blower fan and
Evaporation fan etc..
The fan speed regulation product that currently there are has：
1st, resistance-type speed governing.The principle of this mode of speed regulation is the serial adjustable resistance in blower fan current supply circuit, by electricity
The different gears of resistance are realizing partial pressure current limliting and then carrying out speed governing.The shortcoming of this mode is resistance high energy consumption, and caloric value is big, and
Stepless speed regulation can not be realized.
2nd, chopping regulating speed.This mode of speed regulation mainly uses power electronic devices HF switch, to DC input voitage
Copped wave is carried out, and substantially smooth DC current is obtained after the filtering of blower fan self-induction.The advantage of this mode is efficiency high, can
Stepless speed regulation.Have the disadvantage that the DC-DC converter that needs turn low pressure with on-board high-voltage is used cooperatively, need independently installed position and match somebody with somebody
Line, and can only single channel output, be unfavorable for onboard system most optimum distribution of resources.
The content of the invention
It is an object of the invention to provide a kind of compact conformation, small volume, are easily installed, independently stepless copped wave is adjusted to carry out two-way
The electric power electronic module of the two-way chopper control of pressure.
The present invention is that the technical scheme for reaching above-mentioned purpose is：A kind of electric power electronic module of two-way chopper control, which is special
Levy and be：Including for receiving the pressure regulation signal interface circuit of two-way voltage signal, for exporting two-way pwm control signal
Pwm control circuit, the drive circuit for exporting four road PWM drive signals and for exporting two-way high frequency chopping PWM voltages
Two-way synchronous rectification BUCK circuits and for gather two-way high frequency chopping PWM output voltage signals voltage x current sample electricity
Road, the first pressure regulation signal of output and the second tune after the two-way voltage signal that described pressure regulation signal interface circuit will be received is filtered
Pressure signal, the input of pwm control circuit is connected with the first pressure regulation signal and the second pressure regulation signal, and two-way pressure regulation signal is entered
Row adjustment and Jing negative feedbacks export two-way pwm signal, input and the pwm control circuit of drive circuit when reaching steady statue
Outfan connects, for receiving the pwm signal of pwm control circuit the driving letter of output driving two-way high-frequency chopper action
Number, the signal end of two-way synchronous rectification BUCK circuits is connected with the outfan of drive circuit, and two-way synchronous rectification BUCK circuits
Two-way high-frequency chopper Jing duty cycle adjustments export independent high frequency chopping PWM voltage signals, it is negative to air conditioner condensation blower fan
Carry and evaporation fan load supplying, two-way high-frequency chopper output voltage signal Jing voltage x current sample circuits connect PWM controls
The signal end of circuit.
Present invention employs pressure regulation signal interface circuit, pwm control circuit, drive circuit and two-way synchronous rectification BUCK
Circuit and voltage x current sample circuit, and will be two-way voltage regulation circuit of chopping integrated, module volume is reduced, compact conformation is efficient,
It is easily installed, is conducive to onboard system most optimum distribution of resources.The present invention adopts two-way PWM independent controls, by duty cycle adjustment
To control average output voltage, two-way independently stepless chopper control can be carried out, the flexible on-board air conditioner evaporation fan and cold of adjusting
The rotating speed of solidifying blower fan.The present invention adopts synchronous rectification BUCK circuits, and continued flow tube conduction voltage drop is little, and overall efficiency is high.
Description of the drawings
Below in conjunction with the accompanying drawings embodiments of the invention are described in further detail.
Fig. 1 is the structured flowchart of the electric power electronic module of two-way chopper control of the present invention.
Fig. 2 is the electrical schematic diagram of two-way synchronous rectification BUCK circuits of the present invention.
Fig. 3 is the electrical schematic diagram of the pressure regulation signal interface circuit, pwm control circuit and drive circuit of the present invention.
Fig. 4 is the electrical schematic diagram of first voltage current sampling circuit of the present invention.
Fig. 5 is the electrical schematic diagram of second voltage current sampling circuit of the present invention.
Specific embodiment
As shown in Figure 1, the electric power electronic module of two-way chopper control of the invention, including for receiving two-way voltage signal
Pressure regulation signal interface circuit, the pwm control circuit for exporting two-way pwm control signal, for export four road PWM drive letter
Number drive circuit and for export two-way high frequency chopping PWM voltages two-way synchronous rectification BUCK circuits and for collection two
The voltage x current sample circuit of road high frequency chopping PWM output voltage signals.
As shown in Fig. 1,3, output the after two-way voltage signal that pressure regulation signal interface circuit of the present invention will be received is filtered
One pressure regulation signal and the second pressure regulation signal, will be sent to pwm control circuit after outside input pressure regulation signal processing.The PWM of the present invention
The input of control circuit is connected with the first pressure regulation signal and the second pressure regulation signal, and two-way pressure regulation signal is adjusted and Jing
Negative feedback exports two-way pwm signal when reaching steady statue, makes pwm control circuit export pwm control signal to drive circuit.This
The input of the drive circuit of invention is connected with the outfan of pwm control circuit, for receiving the pwm signal of pwm control circuit
And the drive signal of output driving two-way high-frequency chopper action, make drive circuit export PWM drive signal to synchronous rectification
BUCK circuits switch tube grid accordingly, and the signal end of two-way synchronous rectification BUCK circuits is connected with the outfan of drive circuit,
And the two-way high-frequency chopper Jing duty cycle adjustments of two-way synchronous rectification BUCK circuits export independent high frequency chopping PWM voltages
Signal, to air conditioner condensation fans load and evaporation fan load supplying, the input of two-way synchronous rectification BUCK circuits connects input directly
Stream bus, two-way high-frequency chopper output voltage signal Jing voltage x current sample circuits connect the signal end of pwm control circuit, and
Voltage x current sample circuit is using conventional divider resistance mode and amplifier collection amplifying circuit.
As shown in Figure 2, to include that switching tube Q1 and Q3 concatenation is constituted first high for two-way synchronous rectification BUCK circuits of the present invention
Second high-frequency chopper frequency chopper circuit, switching tube Q2 and Q4 in series and sampling resistor RS1 and RS2, two pole of body
Pipe D1～D4 is connected on each between the source electrode of correspondence switching tube Q1～Q4 and drain electrode, and the drain electrode of switching tube Q1 connects input voltage positive pole
Vin+, source electrode connect the drain electrode of switching tube Q3, and it is defeated to connect the first copped wave at the source electrode of switching tube Q1 and the drain junction of switching tube Q3
Go out positive polarity Vout1+, the source electrode of switching tube Q3 meets input voltage negative pole Vin-, the sampled resistance RS1 in another road all the way and connects
One copped wave output voltage negative pole Vout1-, drive circuit are exported the drive signal for controlling switch pipe Q1 and Q3 and are opened with corresponding
Close the grid connection of pipe Q1 and Q3.As shown in Figure 2, the drain electrode of switching tube Q2 of the present invention meets input voltage positive pole Vin+, source electrode and connects
The second copped wave output voltage positive pole is connect at the drain electrode of switching tube Q4, and the drain junction of the source electrode of switching tube Q2 and switching tube Q4
The source electrode of Vout2+, switching tube Q4 meets input voltage negative pole Vin-, the sampled resistance RS2 in another road all the way and connects the second copped wave output
Voltage negative pole Vout2-, and drive circuit exports the drive signal and corresponding switching tube Q2 and Q4 for controlling switch pipe Q2 and Q4
Grid connection, due to two-way high-frequency chopper independent control, and by the regulation of dutycycle controlling average output voltage,
The rotating speed of energy flexible on-board air conditioner evaporation fan and condensation fan.
As shown in Figure 3, pwm control circuit of the present invention includes the first pwm chip U1 and the second pwm chip U2,
Drive circuit includes the first drive control chip U3 and the second drive control chip U4, and speed governing interface circuit includes signal terminal
J1 and RC filter circuits and the 2nd RC filter circuits, the first RC filter circuits of Jing all the way of signal terminal J1 meet a PWM
The first inversion signal input of control chip U1, RC filter circuits are made up of filter resistance R1 and filter capacitor C1, should
Filter capacitor C1 welding system reference grounds；The 2nd RC filter circuits of another road of signal terminal J1 meet the second pwm chip U2
The second inversion signal input, the 2nd RC filter circuits are made up of filter resistance R2 and filter capacitor C2, same filter capacitor
C2 welding system reference grounds.
As shown in Figure 3, the Rt pins of the first pwm chip U1 of the invention, Ct pins and SS pins and timing resistor
RT1, timing capacitor CT1 and it is slow open electric capacity CS1 connections welding system reference ground, the OUT A pins of the first pwm chip U1 and
OUT B pin Jing resistance RG1 and RG2 meet the input pin In of the first drive control chip U3, the first drive control chip U3's
Two output signal pins connect the grid of the Q1 and Q3 of corresponding first high-frequency chopper.Second pwm chip U2's
Rt pins, Ct pins and SS pins are connected and welding system reference with timing resistor RT2, timing capacitor CT2 and the slow electric capacity CS2 that opens
Ground, the OUT A pins and OUT B pin Jing resistance RG3 and RG4 of the second pwm chip U2 meet the second drive control chip U4
Input pin In, the two-way output signal pin of the second drive control chip U4 connects corresponding second high-frequency chopper
The grid of switching tube Q2 and Q4.In outside input pressure regulation signal, pwm control circuit can adjust defeated according to actual output voltage
Go out corresponding pwm signal, and steady statue is reached by negative feedback, the size of outside pressure regulation signal averaging is made corresponding to corresponding
Average output voltage value, so as to reach output pressure regulation signal, and then Jing two-ways synchronous rectification BUCK circuits by dutycycle tune
Section, controls average output voltage, adjustment load blower fan wind speed, energy flexible on-board air conditioner evaporation fan and condensation fan
Rotating speed.
As shown in Fig. 4,5, voltage x current sample circuit of the present invention adopts first voltage current sampling circuit and second voltage
Current sampling circuit, the first high-frequency chopper output voltage positive pole Vout1+ Jing resistance R3 and resistance R4 pressure-dividing output voltages are adopted
Sample signal, electric capacity C3 are attempted by resistance R4 two ends and are grounded, and the voltage sampling signal of the first high-frequency chopper is supplied to PWM
Control circuit.As shown in Figure 4, the first high-frequency chopper output voltage negative pole Vout1- Jing resistance R7 of the invention meet transport and placing device U5
In-phase input end, and transport and placing device U5 inverting input Jing resistance R6 ground connection, resistance RS1 connect the first high-frequency chopper output
Between voltage negative pole Vout1- and ground, resistance R5 is connected across the in-phase input end and outfan of transport and placing device U5, and the first high frequency is cut
The current sampling signal of wave circuit is supplied to pwm control circuit.Equally, as shown in Figure 5, the second high-frequency chopper of the invention is defeated
Go out positive polarity Vout2+ Jing resistance R8 and resistance R9 pressure-dividing output voltage sampled signals, electric capacity C4 is attempted by resistance R9 two ends simultaneously
The voltage sampling signal of the second high-frequency chopper is supplied to pwm control circuit by ground connection.As shown in Figure 5, the present invention second is high
Frequency chopper circuit output voltage negative pole Vout2- Jing resistance R12 connect the in-phase input end of transport and placing device U6, and transport and placing device U6's is anti-phase
Input Jing resistance R11 is grounded, and resistance RS2 is connect between the second high-frequency chopper output voltage negative pole Vout2- and ground, resistance
R10 is connected across the in-phase input end and outfan of transport and placing device U6, and the current sampling signal of the second high-frequency chopper is supplied to
Pwm control circuit.
Speed-regulating signal interface circuit of the present invention, drive circuit, pwm control circuit, two-way synchronous rectification BUCK circuits and electricity
Current voltage sample circuit is welded on metal basal board printed substrate, can by the back side of metal basal board printed substrate with it is vehicle-mounted
Radiator closely connects, and reaches high efficiency and heat radiation, reduces element manipulation temperature, improves module life.
Claims (4)
1. a kind of electric power electronic module of two-way chopper control, it is characterised in that：Including for receiving the tune of two-way voltage signal
Pressure signal interface circuit, the pwm control circuit for exporting two-way pwm control signal, for exporting four road PWM drive signals
Drive circuit and for exporting two-way synchronous rectification BUCK circuits of two-way high frequency chopping PWM voltages and high for gathering two-way
The voltage x current sample circuit of frequency copped wave PWM output voltage signals, described pressure regulation signal interface circuit will be the two-way for receiving electric
The first pressure regulation signal of output and the second pressure regulation signal after pressure signal is filtered, the input of pwm control circuit and the first pressure regulation letter
Number and the connection of the second pressure regulation signal, and two-way pressure regulation signal is adjusted and two-way is exported when Jing negative feedbacks reach steady statue
Pwm signal, the input of drive circuit are connected with the outfan of pwm control circuit, and the PWM for receiving pwm control circuit believes
Number and output driving two-way high-frequency chopper action drive signal, the signal end of two-way synchronous rectification BUCK circuits with drive
The outfan connection of circuit, and the two-way high-frequency chopper Jing duty cycle adjustments output of two-way synchronous rectification BUCK circuits is independent
High frequency chopping PWM voltage signals, to air conditioner condensation fans load and evaporation fan load supplying, two-way high-frequency chopper is defeated
Go out the signal end that voltage signal Jing voltage x current sample circuits connect pwm control circuit.
2. the electric power electronic module of two-way chopper control according to claim 1, it is characterised in that：Described two-way synchronization
Rectification BUCK circuits include the first high-frequency chopper of switching tube Q1 and Q3 concatenation composition, Q2 and Q4 are in series for switching tube
Second high-frequency chopper and sampling resistor RS1 and RS2, the drain electrode of switching tube Q1 meet input voltage positive pole Vin+, source electrode and connect
The first copped wave output voltage positive pole is connect at the drain electrode of switching tube Q3, and the drain junction of the source electrode of switching tube Q1 and switching tube Q3
The source electrode of Vout1+, switching tube Q3 meets input voltage negative pole Vin-, the sampled resistance RS1 in another road all the way and connects the first copped wave output
Voltage negative pole Vout1-, drive circuit export drive signal for controlling switch pipe Q1 and Q3 with corresponding switching tube Q1's and Q3
Grid connects；The drain electrode of the switching tube Q2 meets the drain electrode that input voltage positive pole Vin+, source electrode meet switching tube Q4, and switching tube Q2
Source electrode and switching tube Q4 drain junction at meet the second copped wave output voltage positive pole Vout2+, the source electrode of switching tube Q4 is connect all the way
Input voltage negative pole Vin-, the sampled resistance RS2 in another road meet the second copped wave output voltage negative pole Vout2-, and drive circuit is defeated
Go out and connect with the grid of corresponding switching tube Q2 and Q4 for the drive signal of controlling switch pipe Q2 and Q4.
3. the electric power electronic module of two-way chopper control according to claim 1 and 2, it is characterised in that：Described PWM controls
Circuit processed includes the first pwm chip U1 and the second pwm chip U2, and described drive circuit includes the first drive control
Chip U3 and the second drive control chip U4, described speed governing interface circuit include signal terminal J1 and RC filter circuits and
2nd RC filter circuits, it is first anti-phase that the first RC filter circuits of Jing all the way of signal terminal J1 meet the first pwm chip U1
Signal input part, the 2nd RC filter circuits of another road of signal terminal J1 connect the second anti-phase letter of the second pwm chip U2
Number input, the Rt pins of the first pwm chip U1, Ct pins and SS pins and timing resistor RT1, timing capacitor CT1 and
It is slow to open electric capacity CS1 connections welding system reference ground, the OUT A pins and OUT B pin Jing resistance of the first pwm chip U1
RG1 and RG2 connect the input pin In of the first drive control chip U3, two output signal pins of the first drive control chip U3
Connect the grid of the switching tube Q1 and Q3 of corresponding first high-frequency chopper；The Rt pins of the second pwm chip U2, Ct draw
Foot and SS pins are connected and welding system reference ground with timing resistor RT2, timing capacitor CT2 and the slow electric capacity CS2 that opens, the 2nd PWM controls
The OUT A pins and OUTB pin Jing resistance RG3 and RG4 of coremaking piece U2 meet the input pin In of the second drive control chip U4,
The two-way output signal pin of the second drive control chip U4 connects corresponding second high-frequency chopper switching tube Q2's and Q4
Grid.
4. the electric power electronic module of two-way chopper control according to claim 1 and 2, it is characterised in that：Described two-way
Synchronous rectification BUCK circuits, pwm control circuit, drive circuit, voltage x current sample circuit and speed-regulating signal interface circuit are equal
It is welded on metal basal board printed substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243572.8A CN106533174A (en) | 2016-12-29 | 2016-12-29 | Dual-circuit chopping-wave and voltage-regulating power electronic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611243572.8A CN106533174A (en) | 2016-12-29 | 2016-12-29 | Dual-circuit chopping-wave and voltage-regulating power electronic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106533174A true CN106533174A (en) | 2017-03-22 |
Family
ID=58339251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611243572.8A Withdrawn CN106533174A (en) | 2016-12-29 | 2016-12-29 | Dual-circuit chopping-wave and voltage-regulating power electronic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106533174A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107379925A (en) * | 2017-05-19 | 2017-11-24 | 北汽福田汽车股份有限公司 | A kind of vehicle and its ac control circuit |
| CN107966612A (en) * | 2017-12-27 | 2018-04-27 | 苏州菲达旭微电子有限公司 | A kind of chopped phase detection circuit |
| CN108286779A (en) * | 2018-01-27 | 2018-07-17 | 嘉兴景辉智能科技有限公司 | A method of it adjusting air conditioner load variation based on duty cycle signals and reduces air-conditioning system power consumption |
| CN108833011A (en) * | 2018-04-26 | 2018-11-16 | 苏州大贝岩电子科技有限公司 | A kind of communication control system based on LI-Fi communications protocol |
| CN108880676A (en) * | 2018-04-26 | 2018-11-23 | 苏州灵亿易电子科技有限公司 | A kind of communication system based on FPGA and ASIC |
| WO2019011062A1 (en) * | 2017-07-13 | 2019-01-17 | 中兴通讯股份有限公司 | Method and device for controlling base station fan |
| CN109391148A (en) * | 2017-08-02 | 2019-02-26 | 江苏宏微科技股份有限公司 | A kind of alternating expression chopper control power supply |
-
2016
- 2016-12-29 CN CN201611243572.8A patent/CN106533174A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107379925A (en) * | 2017-05-19 | 2017-11-24 | 北汽福田汽车股份有限公司 | A kind of vehicle and its ac control circuit |
| WO2019011062A1 (en) * | 2017-07-13 | 2019-01-17 | 中兴通讯股份有限公司 | Method and device for controlling base station fan |
| CN109391148A (en) * | 2017-08-02 | 2019-02-26 | 江苏宏微科技股份有限公司 | A kind of alternating expression chopper control power supply |
| CN107966612A (en) * | 2017-12-27 | 2018-04-27 | 苏州菲达旭微电子有限公司 | A kind of chopped phase detection circuit |
| CN107966612B (en) * | 2017-12-27 | 2024-06-07 | 国网安徽省电力有限公司无为市供电公司 | Chopper phase detection circuit |
| CN108286779A (en) * | 2018-01-27 | 2018-07-17 | 嘉兴景辉智能科技有限公司 | A method of it adjusting air conditioner load variation based on duty cycle signals and reduces air-conditioning system power consumption |
| CN108833011A (en) * | 2018-04-26 | 2018-11-16 | 苏州大贝岩电子科技有限公司 | A kind of communication control system based on LI-Fi communications protocol |
| CN108880676A (en) * | 2018-04-26 | 2018-11-23 | 苏州灵亿易电子科技有限公司 | A kind of communication system based on FPGA and ASIC |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106533174A (en) | Dual-circuit chopping-wave and voltage-regulating power electronic module | |
| CN104142008A (en) | Photovoltaic air conditioner and photovoltaic air conditioning system | |
| CN104608591B (en) | Mounted air conditioner system | |
| CN104935043B (en) | Photovoltaic power supply device, PV air-conditioner system and automobile | |
| CN104283260A (en) | Network type MPPT solar charging controller and control method thereof | |
| CN204141794U (en) | Photovoltaic air conditioner and photovoltaic air conditioning system | |
| CN206807291U (en) | A kind of electric power electronic module of two-way chopper control | |
| CN203406822U (en) | A wind speed adjusting circuit and an air conditioner | |
| CN202405648U (en) | Air-cooled radiating system of photovoltaic power generation inverter cabinet | |
| CN205986699U (en) | Utilize water pump motor control system of solar energy power supply | |
| CN214591131U (en) | Drive circuit based on comparator and triode | |
| CN106555772A (en) | For blower for vehicle air conditioning LPM speed adjusting modules | |
| CN204905902U (en) | Photovoltaic power supply unit , photovoltaic air conditioning system and car | |
| CN204205633U (en) | Network-type MPPT solar charging controller | |
| CN207304013U (en) | The power factor correction circuit compared based on stagnant ring | |
| CN207039455U (en) | A kind of alternating expression chopper control power supply | |
| CN208443888U (en) | One kind being based on STM32 DC Electronic Loads | |
| CN201243295Y (en) | Sound console | |
| CN209250280U (en) | A kind of middle pressure flexible direct current two-way changing device for direct-current grid | |
| CN206349918U (en) | A kind of high-efficiency magnetic tuning device drive circuit | |
| CN208024608U (en) | charger fan speed regulating circuit | |
| CN214959290U (en) | Chopper circuit suitable for adjusting current-sharing bus voltage | |
| CN205606847U (en) | Fan is from central air conditioning energy -saving control system of opening and close | |
| CN206322052U (en) | A kind of high-efficiency magnetic tuning device drive circuit of tracking with voltage | |
| CN205945600U (en) | High -efficient photoelectric conversion solar panel support frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170322 |