CN111463888B - Fan system, multi-power-supply input voltage stabilizing module and method - Google Patents
Fan system, multi-power-supply input voltage stabilizing module and method Download PDFInfo
- Publication number
- CN111463888B CN111463888B CN202010272978.9A CN202010272978A CN111463888B CN 111463888 B CN111463888 B CN 111463888B CN 202010272978 A CN202010272978 A CN 202010272978A CN 111463888 B CN111463888 B CN 111463888B
- Authority
- CN
- China
- Prior art keywords
- power
- circuit
- power supply
- voltage
- input
- 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.)
- Active
Links
Images
Classifications
-
- 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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Direct Current Feeding And Distribution (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides a fan system, a multi-power-supply input voltage stabilizing module and a method. The multi-power-supply input voltage stabilizing module is suitable for a plurality of input power supplies. The input power source comprises a direct current power source and/or an alternating current power source. The multi-power input voltage stabilizing module comprises a plurality of receiving ends, a power selection unit and a voltage conversion unit. Each receiving terminal receives each input power respectively. The power selection unit is coupled to each receiving terminal to receive each input power and set at least one of the input power as a working power. The voltage conversion unit receives the working power supply, maintains the working power supply at a working voltage level to serve as a voltage signal and outputs the voltage signal to a load.
Description
The application is as follows: year 2014, month 05, day 14; the application numbers are: 201410204135. X; the invention has the name: the invention discloses a fan system, a multi-power-supply input voltage stabilizing module and a method.
Technical Field
The invention relates to a multi-power-supply input voltage stabilizing module, in particular to a multi-power-supply input voltage stabilizing module of a fan system.
Background
With the development of technology, the performance of electronic devices is also increasing. However, if the heat generated by the electronic device cannot be properly dissipated, the performance of the electronic device will be deteriorated, and even the electronic device will be burned out.
Generally, the input power of the fan is mostly a single input source, and if the input source fails, the fan will stop running, so that the heat dissipation mechanism of the application environment is lost, and the system is overheated and damaged.
Disclosure of Invention
The multi-power-supply input voltage stabilizing module is suitable for a plurality of input power supplies. The input power source comprises a direct current power source and/or an alternating current power source. The multi-power input voltage stabilizing module comprises a plurality of receiving ends, a power selection unit and a voltage conversion unit. Each receiving terminal receives each input power respectively. The power selection unit is coupled to each receiving terminal to receive each input power and set at least one of the input power as a working power. The voltage conversion unit receives the working power supply, maintains the working power supply at a working voltage level to serve as a voltage signal and outputs the voltage signal to a load.
The fan system is suitable for a plurality of input power supplies. Each input power source comprises a direct current power source and/or an alternating current power source. The fan system comprises a fan motor, a driving circuit and a multi-power-supply input voltage stabilizing module. The driving circuit is connected with the fan motor. The multi-power input voltage stabilizing module comprises a plurality of receiving ends, a power selection unit and a voltage conversion unit. Each receiving terminal receives each input power respectively. The power selection unit is coupled to each receiving terminal to receive each input power and set at least one of the input power as a working power. The voltage conversion unit receives the working power supply, maintains the working power supply at a working voltage level to serve as a voltage signal and outputs the voltage signal to the driving circuit. The driving circuit receives the working power supply to drive the fan motor to rotate.
In one embodiment, the power selection unit may include a switching circuit and a control circuit. The switching circuit is coupled to each receiving terminal to receive each input power. The control circuit is coupled with the switching circuit.
In one embodiment, the voltage conversion unit may include a filter circuit, a rectifier circuit, and a boost/buck circuit. The filter circuit is coupled to the power selection unit. The rectifying circuit is coupled with the filter circuit. The voltage boosting/reducing circuit is coupled with the filter circuit and the rectifying circuit.
In one embodiment, the filter circuit can filter noise of the operating power supply.
In one embodiment, when the working power supply is an ac power supply, the rectifying circuit may rectify the working power supply into a dc power supply.
In one embodiment, when the working power supply is a dc power supply, the working power supply is transmitted to the step-up/step-down circuit without passing through the rectifying circuit.
In one embodiment, the step-up/step-down circuit maintains the operating power supply at an operating voltage level as a voltage signal and outputs the voltage signal to the load.
In one embodiment, the voltage boost/buck circuit may be a Power Factor Correction (p.f.c.) circuit.
The multi-power-supply input voltage stabilizing method is cooperatively applied by a multi-power-supply input voltage stabilizing module. The multi-power input voltage stabilizing module comprises a plurality of receiving ends, a power selection unit and a voltage conversion unit. The method comprises the following steps: receiving a plurality of input power supplies by using each receiving end, wherein the input power supplies comprise direct current power supplies and/or alternating current power supplies; setting at least one of the input power supplies as a working power supply by using the power supply selection unit; and maintaining the working power supply at a working voltage level by using the voltage conversion unit to serve as a voltage signal and output the voltage signal to a load.
In summary, the fan system, the multi-power-supply input voltage-stabilizing module and the method of the present invention utilize the power selection unit to receive a plurality of input power supplies and output at least one input power supply as a working power supply to the driving circuit of the fan motor, so that other input power supplies can be introduced as new working power supplies when the working power supply fails, and the fan motor can maintain normal operation. In addition, in some embodiments, the voltage conversion unit is used to maintain the working power supply at a working voltage level, so that the fan motor can maintain the highest efficiency without being influenced by the voltage of the input power supply, and the driving circuit is not influenced when the voltage of the input power supply is changed, thereby having the function of protecting the load.
Drawings
Fig. 1 is a block diagram of a fan system according to a preferred embodiment of the invention.
Fig. 2 is a block diagram of a multi-power-supply-input voltage stabilization module according to a preferred embodiment of the invention.
FIG. 3 is a torque curve of the fan motor.
Fig. 4 is a flowchart illustrating steps of a multi-power-supply-input voltage stabilization method according to the present invention.
Description of reference numerals:
1: multi-power input voltage stabilizing module
11: receiving end
12: power supply selection unit
121: control circuit
122: switching circuit
13: voltage conversion unit
131: filter circuit
132: rectifying circuit
133: step-up/step-down circuit
2: driving circuit
3: fan motor
F: fan system
L1: solid line
L2: dotted line
P: input power supply
S: voltage signal
S01, S02, S03: step (ii) of
W: working power supply
Detailed Description
A fan system, a multi-power-supply-input voltage-stabilizing module and a method according to the preferred embodiment of the invention will be described with reference to the accompanying drawings, wherein like elements are denoted by like reference numerals.
Fig. 1 is a block diagram of a fan system according to a preferred embodiment of the present invention, and fig. 2 is a block diagram of a multi-power-supply-input voltage-stabilizing module according to a preferred embodiment of the present invention. Referring to fig. 1 and fig. 2, the fan system F can be applied to a plurality of input power sources P (three are taken as examples in this embodiment), and the input power sources P can include a dc power source and/or an ac power source, that is, each input power source P can be a dc power source or an ac power source or both a dc power source and an ac power source. Of course, the fan system F can also be adapted to a single input power source P, i.e. the fan system F can be compatible with a single power supply or multiple power supplies.
Further, the input power sources P may be from the same or different power supply sources, such as commercial power, a self-contained power system or a battery, and the voltages of the input power sources P may be the same or different. Taking the commercial power as an example, the input power P may be all 110 volts or all 220 volts or both 110 volts and 220 volts. The input power P may also include, for example, 110 v commercial power and 120 v battery pack, i.e., both dc power and ac power.
The fan system F includes a multi-power-supply input voltage-stabilizing module 1, a driving circuit 2 and a fan motor 3. The driving circuit 2 is connected to the fan motor 3, the multi-power-supply input voltage-stabilizing module 1 receives the input power supplies P and converts at least one of the input power supplies P into a voltage signal S, and the driving circuit 2 receives the voltage signal S to drive the fan motor 3 to rotate. The components and functions of the multi-power-supply-input voltage stabilization module 1 will be described in detail below.
As shown in fig. 2, the multi-power-input voltage stabilizing module 1 includes a plurality of receiving terminals 11, a power selecting unit 12, and a voltage converting unit 13. Each receiving terminal 11 receives each input power P, and the power selection unit 12 is coupled to each receiving terminal 11 to receive the input power P and set at least one of the input power P as a working power W. The voltage conversion unit 13 receives the working power W, maintains the working power W at a working voltage level as a voltage signal S, and outputs the voltage signal S to the driving circuit 2. It should be noted that the operating voltage level is preferably determined according to the rated voltage of the driving circuit 2, for example, the rated voltage of the driving circuit 2 is 730 volts, and the voltage converting unit 13 can maintain the voltage of the operating power supply W at 730 volts as the voltage signal S regardless of the original voltage of the operating power supply W.
In practice, the receiving end 11 may be, for example, a plug or a wire, to couple the input power P and transmit to the power selection unit 12. In the present embodiment, the power selection unit 12 may have a control circuit 121 and a switching circuit 122. The control circuit 121 is, for example, an Integrated Circuit (IC), or an analog circuit. The integrated circuit may be, for example, a microprocessor (Micro-processor), a Microcontroller (MCU), a programmable gate array (FPGA or CPLD), or an Application Specific Integrated Circuit (ASIC). When the power selection unit 12 receives the input power P, the control circuit 121 may detect a voltage value or an amplitude of each input power P to determine whether the input power P is a dc power or an ac power.
The control circuit 121 may determine the efficiency of the input power P provided by the driving circuit 2 by using an algorithm or a logic gate, and preferentially set the input power P providing higher efficiency as the operating power W, for example, the input power P having a higher voltage or the input power P having a smaller voltage difference with the operating voltage. Alternatively, the control circuit 121 may be designed to preferentially set the input power P of the ac power supply to the operating power W, for example. Alternatively, the user may edit or set the determination condition of the control circuit 121 according to the usage requirement to further set the operating power W.
The switching circuit 122 is coupled to each receiving terminal 11 to receive each input power P, and the control circuit 121 is coupled to the switching circuit 122. The control circuit 121 may alternatively set each input power source P as the operating power source W, for example, control the switching circuit 122 to perform OR operation (OR operation); alternatively, the control circuit 121 may combine two or more input power supplies P as the operating power supply W, for example, control the switching circuit 122 to perform AND operation (AND operation). When a plurality of input power sources P are combined, that is, each input power source P is input in parallel, the effect of input load averaging can be achieved. In addition, the switching circuit 122 may be implemented using a relay or a semiconductor electronic switch. In practice, when the control circuit 121 detects that the original working power supply W is failed, the control switch circuit 122 can be controlled to introduce the rest of the input power supply P as the new working power supply W, so that the driving circuit 2 can maintain normal operation. In other words, the higher the redundancy of the input power P, the higher the stability and reliability of the fan system F.
The voltage conversion unit 13 has a filter circuit 131, a rectifying circuit 132 and a step-up/step-down circuit 133. The filter circuit 131 is coupled to the power selection unit 12. The rectifying circuit 132 is coupled to the filter circuit 131. The boost/buck circuit 133 is coupled to the filter circuit 131 and the rectifying circuit 132.
Further, the filter circuit 131 can filter the noise of the working power W to improve the quality of the working power W. When the working power supply W is an ac power supply, the rectifying circuit 132 may rectify the working power supply W into a dc power supply. In practice, the rectifying circuit 132 may employ full-wave rectification or half-wave rectification, in consideration of rectifying into direct current. Specifically, when the control circuit 121 of the power selection unit 12 determines that the working power W is a dc power, the control circuit 121 may transmit the working power W to the step-up/step-down circuit 133 without passing through the rectifying circuit 132, so as to improve the overall operating efficiency of the fan system F.
The step-up/down circuit 133 can maintain the operating power W at an operating voltage level as the voltage signal S and output the voltage signal S to the driving circuit 2. When the original voltage of the working power supply W (e.g., 220 v of the utility power) is lower than the rated voltage (e.g., 730 v), the step-up/step-down circuit 133 may raise the voltage of the working power supply W to the working voltage level of the rated voltage. On the other hand, when the original voltage of the working power supply W (e.g. the utility power supply 110 volts) is greater than the rated voltage (e.g. 90 volts), the step-up/step-down circuit 133 may decrease the voltage of the working power supply W to the working voltage level of the rated voltage. Here, the step-up/down circuit 133 may be a Power Factor Correction (p.f.c.) circuit, and may have a function of Power Factor Correction (p.f.c.) when the input Power source P is an ac Power source. In this way, the driving circuit 2 can receive the voltage signal S of the rated voltage regardless of the voltage level of the input power P, so that the fan motor 3 can maintain the highest performance.
FIG. 3 is a graph of rotational speed versus torque for a fan motor, where the horizontal axis is rotational speed (in RPM) and the vertical axis is torque (in Nm). Referring to fig. 1, 2 and 3, taking the rated voltage of the driving circuit 2 as 730 volts as an example, when an input power P of 530 volts is provided, the conventional fan motor can only operate on a solid line L1 and its operating area. The fan system F of the present embodiment has the multi-power-supply input regulator module 1, so that the 530 v input power supply P can be converted into the 730 v voltage signal S by the step-up/step-down circuit 133, and the fan motor 3 can operate at the rated voltage (i.e. the dashed line L2) to have a larger operation area, as shown by the hatched area in fig. 3. On the other hand, when the input power P is unstable and the voltage provided by the input power P changes, for example, drops to 450 volts or rises to 650 volts, the step-up/step-down circuit 133 can maintain the voltage signal S at 730 volts, that is, the output voltage does not change with the change of the input voltage, and can prevent the driving circuit 2 from being damaged due to the excessive change of the instantaneous current, thereby having the function of protecting the load (i.e., the driving circuit 2). Thus, the fan motor 3 of the present embodiment has a better working performance.
Fig. 4 is a flowchart illustrating steps of a multi-power-input voltage stabilization method according to the present invention. Referring to fig. 1, fig. 2 and fig. 4 together, the multi-power-input voltage stabilizing method is applied by the multi-power-input voltage stabilizing module 1, wherein the description of the multi-power-input voltage stabilizing module 1 is described in detail above, and is not repeated herein. The method comprises the following steps: receiving a plurality of input power sources by the receiving terminals, wherein the input power sources include a dc power source and/or an ac power source (S01); setting at least one of the input power sources as an operating power source by using the power source selection unit (S02); and maintaining the operating power at an operating voltage level by the voltage converting unit as a voltage signal and outputting the voltage signal to a load (S03).
In step S01, the multi-power input voltage stabilization method is applied to a single input power P or a plurality of input power P. In addition, the input power P includes a dc power and/or an ac power, and the voltage of the input power P may be the same or different.
In step S02, the working power W may be input by one of the input power sources P or two or more input units P.
In step S03, the load may be an electronic product such as a mobile phone or a computer. In the present embodiment, the load is the fan motor 3 and its driving circuit 2. In addition, the operating voltage level is preferably the rated voltage of the load, and can be realized by the voltage converting unit 13 stepping up or stepping down the operating power supply W. Therefore, the load can receive the voltage signal S of the rated voltage no matter the voltage of the input power P is high or low, and the load can maintain the highest performance.
In summary, the fan system, the multi-power-supply input voltage-stabilizing module and the method of the invention utilize the power selection unit to receive the plurality of input power supplies and output at least one input power supply as the working power supply to the driving circuit of the fan motor, so that other input power supplies can be introduced as new working power supplies when the working power supply fails, and the fan motor can maintain normal operation. In addition, in some embodiments, the voltage conversion unit is used to maintain the working power supply at a working voltage level, so that the fan motor can maintain the highest efficiency without being influenced by the voltage of the input power supply, and the driving circuit is not influenced when the voltage of the input power supply is changed, thereby having the function of protecting the load.
The foregoing is by way of example only and is not intended as limiting. Any equivalent modifications or variations without departing from the spirit and scope of the present invention should be included in the claims of the present invention.
Claims (9)
1. A multi-power input voltage stabilizing module for a fan system is applicable to a plurality of input power supplies which respectively comprise a direct current power supply and/or an alternating current power supply, and is characterized by comprising:
a plurality of receiving terminals for receiving the plurality of input power supplies, respectively;
a power selection unit coupled to the receiving terminals for receiving the input power sources and combining and inputting more than two input power sources as working power sources; and
a voltage conversion unit for receiving the working power supply, wherein the voltage conversion unit comprises a filter circuit coupled with the power supply selection unit; a rectifying circuit coupled to the filter circuit; and a voltage boost/buck circuit, coupled to the filter circuit and the rectifier circuit, the voltage boost/buck circuit is used to boost/buck the working power supply and maintain the working power supply at a working voltage level as a voltage signal and output the voltage signal to a load, wherein when the control circuit of the power selection unit determines that the working power supply is an alternating current power supply, the rectifier circuit rectifies the working power supply into a direct current power supply, and when the control circuit of the power selection unit determines that the working power supply is a direct current power supply, the control circuit transmits the working power supply to the voltage boost/buck circuit without passing through the rectifier circuit.
2. The multi-power-input voltage stabilization module according to claim 1, wherein the power selection unit comprises:
a switching circuit coupled to the plurality of receiving terminals for receiving the plurality of input power sources; and
a control circuit coupled to the switching circuit.
3. The multi-power-supply-input voltage stabilization module according to claim 1 or 2, wherein the filter circuit filters noise of the operating power supply.
4. The multi-power-supply-input voltage stabilization module according to claim 1 or 2, wherein the step-up/step-down circuit is a power factor correction circuit.
5. A fan system adapted for use with a plurality of input power sources, each of the plurality of input power sources including a dc power source and/or an ac power source, the fan system comprising:
a fan motor;
a driving circuit connected to the fan motor; and
a multi-power-supply input regulation module comprising:
a plurality of receiving terminals for receiving the plurality of input power supplies, respectively;
a power selection unit coupled to the plurality of receiving terminals to receive the plurality of input power supplies and combine and input more than two input power supplies as a working power supply; and
a voltage conversion unit for receiving the working power supply, wherein the voltage conversion unit comprises a filter circuit coupled to the power selection unit; a rectifying circuit coupled to the filter circuit; and a voltage boost/buck circuit coupled to the filter circuit and the rectifier circuit, the voltage boost/buck circuit being configured to boost/buck the working power supply and maintain the working power supply at a working voltage level as a voltage signal and output the voltage signal to the driving circuit, wherein the driving circuit receives the voltage signal to drive the fan motor to rotate, and when the control circuit of the power selection unit determines that the working power supply is an ac power supply, the rectifier circuit rectifies the working power supply to a dc power supply, and when the control circuit of the power selection unit determines that the working power supply is a dc power supply, the control circuit causes the working power supply to be transmitted to the voltage boost/buck circuit without passing through the rectifier circuit.
6. The fan system as claimed in claim 5, wherein the power selection unit comprises:
a switching circuit coupled to the plurality of receiving terminals for receiving the plurality of input power sources; and
a control circuit coupled to the switching circuit.
7. The fan system as claimed in claim 5 or 6, wherein the filter circuit filters noise of the operating power supply.
8. The fan system as claimed in claim 5 or 6, wherein the step-up/step-down circuit is a power factor correction circuit.
9. A multi-power input voltage stabilizing method for a fan system is applied by matching a multi-power input voltage stabilizing module, the multi-power input voltage stabilizing module comprises a plurality of receiving ends, a power selection unit and a voltage conversion unit, and the method is characterized by comprising the following steps:
receiving a plurality of input power supplies by using the plurality of receiving ends, wherein the plurality of input power supplies respectively comprise a direct current power supply and/or an alternating current power supply;
the power selection unit is used for merging and inputting more than two input power supplies as a working power supply; and
the voltage conversion unit is used for boosting/reducing the voltage of the working power supply and maintaining the working power supply at a working voltage level to serve as a voltage signal and output the voltage signal to a load, wherein the voltage conversion unit comprises a filter circuit coupled with the power supply selection unit; a rectifying circuit coupled to the filter circuit; and a voltage boost/buck circuit, coupled to the filter circuit and the rectifier circuit, the voltage boost/buck circuit maintaining the working power at the working voltage level as the voltage signal and outputting the voltage signal to the load, wherein when the control circuit of the power selection unit determines that the working power is an ac power, the rectifier circuit rectifies the working power to a dc power, and when the control circuit of the power selection unit determines that the working power is a dc power, the control circuit transmits the working power to the voltage boost/buck circuit without passing through the rectifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010272978.9A CN111463888B (en) | 2014-05-14 | 2014-05-14 | Fan system, multi-power-supply input voltage stabilizing module and method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410204135.XA CN105099146A (en) | 2014-05-14 | 2014-05-14 | Fan system, multiple power input voltage regulator module and method |
| CN202010272978.9A CN111463888B (en) | 2014-05-14 | 2014-05-14 | Fan system, multi-power-supply input voltage stabilizing module and method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410204135.XA Division CN105099146A (en) | 2014-05-14 | 2014-05-14 | Fan system, multiple power input voltage regulator module and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111463888A CN111463888A (en) | 2020-07-28 |
| CN111463888B true CN111463888B (en) | 2022-08-16 |
Family
ID=54578942
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010272978.9A Active CN111463888B (en) | 2014-05-14 | 2014-05-14 | Fan system, multi-power-supply input voltage stabilizing module and method |
| CN201410204135.XA Pending CN105099146A (en) | 2014-05-14 | 2014-05-14 | Fan system, multiple power input voltage regulator module and method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410204135.XA Pending CN105099146A (en) | 2014-05-14 | 2014-05-14 | Fan system, multiple power input voltage regulator module and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN111463888B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915429A (en) * | 2021-04-08 | 2021-06-08 | 西安石油大学 | Sound wave fire extinguishing device for oil and gas transmission station |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201207582Y (en) * | 2008-05-20 | 2009-03-11 | 新巨企业股份有限公司 | Multiple input electric power switching circuit |
| CN102111066A (en) * | 2009-12-28 | 2011-06-29 | 精英电脑股份有限公司 | Energy-saving electronic device as well as power control system of cooling fan and control method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3472712B2 (en) * | 1998-11-26 | 2003-12-02 | 三菱電機株式会社 | Double chopper device |
| JP2004096928A (en) * | 2002-09-02 | 2004-03-25 | Ishikawajima Harima Heavy Ind Co Ltd | Power supply circuit for electronic controller |
| US20100066171A1 (en) * | 2008-09-16 | 2010-03-18 | Netapp, Inc. | Multiple power source power supply |
| CN102157966B (en) * | 2011-04-12 | 2013-03-06 | 江西日普升太阳能光伏产业有限公司 | Intelligent photovoltaic controller with multiple functions |
| US20130069578A1 (en) * | 2011-09-21 | 2013-03-21 | Chao-Chin Yao | Brushless Ceiling Fan Motor Power Control System |
| CN202602535U (en) * | 2012-03-20 | 2012-12-12 | 立锜科技股份有限公司 | Switching type voltage-stabilizing circuit provided with multiple power input ends and relevant power converter |
| CN203243277U (en) * | 2013-03-07 | 2013-10-16 | 电子科技大学中山学院 | Three-phase 220V alternating current motor drive device using 110V alternating current |
-
2014
- 2014-05-14 CN CN202010272978.9A patent/CN111463888B/en active Active
- 2014-05-14 CN CN201410204135.XA patent/CN105099146A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201207582Y (en) * | 2008-05-20 | 2009-03-11 | 新巨企业股份有限公司 | Multiple input electric power switching circuit |
| CN102111066A (en) * | 2009-12-28 | 2011-06-29 | 精英电脑股份有限公司 | Energy-saving electronic device as well as power control system of cooling fan and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105099146A (en) | 2015-11-25 |
| CN111463888A (en) | 2020-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7960922B2 (en) | High efficiency low power capacitor charged DC driver | |
| JP5482840B2 (en) | Power supply | |
| TWI544152B (en) | Fan system, voltage stabilizing module and method for multi power source input | |
| US9385526B2 (en) | Inrush current suppressor circuit | |
| JPWO2016002053A1 (en) | Power converter and air conditioner equipped with the power converter | |
| CN110233563B (en) | Frequency modulation circuit and switching power supply | |
| WO2014106894A1 (en) | Electric power conversion device and air conditioning device using same | |
| US10110058B2 (en) | Power conversion device and method for preventing abnormal shutdown thereof | |
| CN110719041A (en) | Power conversion circuit with inrush current limiting resistor bypass | |
| CN111463888B (en) | Fan system, multi-power-supply input voltage stabilizing module and method | |
| CN109995225B (en) | Power supply capable of adjusting power consumption limit and method for adjusting power consumption limit | |
| US10951029B2 (en) | Power source input device for both ac and dc power sources | |
| JP2009278780A (en) | Full-wave rectifying circuit | |
| JP5560552B2 (en) | Inverter device and air conditioner using the same | |
| JP2011050137A (en) | Power conversion circuit | |
| JP2006197729A (en) | Dc power circuit, semiconductor module, motor driving unit, and air conditioner | |
| CN104684177B (en) | optical coupler feedback full-voltage LED drive circuit and LED lighting equipment | |
| US9960636B2 (en) | Power supply system and direct-current converter thereof | |
| JP6765524B2 (en) | Operation control device and air conditioner | |
| JP2010252459A (en) | Power supply auxiliary circuit | |
| JP5352372B2 (en) | AC / DC power supply | |
| EP3118981A1 (en) | Fan system driven by ac/dc power source | |
| JP7027964B2 (en) | Lighting equipment, lighting fixtures and lighting systems | |
| CN110771262B (en) | Apparatus and system for providing a power converter | |
| CN110556826A (en) | AC power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |