GB2464287A - Mains voltage regulator for an inductive appliance - Google Patents
Mains voltage regulator for an inductive appliance Download PDFInfo
- Publication number
- GB2464287A GB2464287A GB0818418A GB0818418A GB2464287A GB 2464287 A GB2464287 A GB 2464287A GB 0818418 A GB0818418 A GB 0818418A GB 0818418 A GB0818418 A GB 0818418A GB 2464287 A GB2464287 A GB 2464287A
- Authority
- GB
- United Kingdom
- Prior art keywords
- appliance
- voltage
- mains voltage
- inductive load
- connected inductive
- 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- Withdrawn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
- 230000001939 inductive effect Effects 0.000 title claims abstract description 11
- 238000013021 overheating Methods 0.000 claims description 2
- 230000010363 phase shift Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract 1
- 230000004913 activation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is AC
- G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices
- G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only
- G05F1/45—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
- G05F1/455—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
-
- 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
- H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC
- H02M5/04—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
- H02M5/22—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/25—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/257—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M5/2573—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
- H02M5/2576—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit with digital control
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Power Conversion In General (AREA)
- Rectifiers (AREA)
Abstract
A mains voltage regulator comprises software, which can be embedded in a micro-controller. It measures mains voltage and adjusts a pulse width modulation (PWM) signal to provide optimum voltage and current needed to operate an inductive appliance load. The incoming voltage can be restricted to between 230 and 235 volts. The PWM signal can operate an optically isolated bi-directional controlled rectifier such as a triac, adjusting the turn-on phase angle to between zero and 180 degrees. The output current and a heatsink temperature can be monitored to detect overloads and over-temperature faults and when either is detected the PWM signal is interrupted and a LED is illuminated. The regulator can be started by detecting power when the appliance is plugged in and ramping-up the PWM signal. The mains voltage is managed and controlled to provide a reduction in electricity cost without impairing performance of the appliance.
Description
A software system that identifies the optimum voltage and current needed to operate a connected inductive appliance without loss of appliance performance.
Description
This software system was developed to overcome the problem of providing safe controlled voltage for many different types of inductive load appliances. Previous electro/mechanical systems could not provide the spectrum of differing loads from a range of appliances. This led to many of the electro/mechanical systems either not producing enough power for the appliance to work to the other extreme of overheating, failing and sometimes igniting/melting.
A software system embedded into a micro controller was designed to achieve a safe and efficient control of incoming mains voltage for a varying number of different appliance types. This software system is used in conjunction with other components to achieve a safe reduction of power usage and electrical costs per each connected appliance in a domestic and light commercial environment.
A software system embedded into micro controller unit to operate a BCR (Bi-direction controlled rectifier). The software system also provides measurement and activation of protection systems for overheat and over-current of the system. Prefix values within the software system controls the adjustable PWM (Pulse Width Modulation) signal driving the BCR so as to control the output power value. The overall effect of the software system and micro controller with other components is to identify the optimum voltage I usually between 230 1 235V, stop over voltage supply and assess the optimum current needed to efficiently and safely operate a connected inductive appliance without loss of appliance performance.
Explanation of the Drawing of Software System Block Diagram L Figure 1 The software initiates a self-checking program if a mains appliance is connected to the unit. If there is mains power connected then the PWM is started by with the software program increasing the value slowly and the lOnE LED will illuminate. The software system will then detect and measure the mains power to adjust appropriate PWM signal. The software system will then analyse the internal temperature of the unit and the current. If there is an over current situation detected then the PWM will be instructed by the software system to stop and the lOverloadE LED will illuminate. The software system will constantly monitor the unit internal operational temperature. If excessive operational heat within the unit is detected then the software system will identify if the cooling fan is on. If the fan is not on the fan will be started; if the fan fails to start then the software system will stop the PWM signal and cause a unit shutdown of mains output power and illuminate the lOverloadE LED.
LED indicator status is as follows: + Mains: Green constant LED illuminated indicates the plug has been connecting to mains and internal power supply is working.
+ Overload: If the output current is over 14A for up to 5 seconds or the temperature of heat sink exceeds 85 degrees Celsius then the LED illuminate in the following manner: * Red flashing slowly indicates overload. Software System will initiate shut down of output mains power * Red flashing fast indicates excessive internal unit heat. Software System will initiate shut down of output mains power + Saving: Yellow LED illuminates if system is working correctly; within operational power and internal temperature parameters and therefore saving power.
Claims (10)
- Title -A software system that identifies the optimum voltage and current needed to operate a connected inductive appliance without loss of appliance performance, Continued LI..Claims A software system working in conjunction with other electronic components that: 1. Identifies the incoming mains voltage of a connected inductive load appliance.
- 2. Restricts the incoming voltage to between 230 and 235 Volts.
- 3. Identifies the optimum power value for the connected inductive load appliance.
- 4. Initiates a synchronous PWM signal via a Random-phase Optoisolators TRIAC.
- 5. Manages a phase-shift control circuit.
- 6. Adjusts the turn-on angle between 0 to 180 degrees reducing the over voltage on the appliance.
- 7. Manages and controls the incoming mains voltage and thereby provides a reduction of power and electrical cost.
- 8. The controlled mains voltage does not impair the performance of the connected inductive load appliance.
- 9. Protects the unit and the connected inductive load appliance from any overload state and initiates a system shutdown of mains output power.
- 10. Protects the unit from overheating and the resultant damage to the unit and the connected inductive load appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0818418A GB2464287A (en) | 2008-10-08 | 2008-10-08 | Mains voltage regulator for an inductive appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0818418A GB2464287A (en) | 2008-10-08 | 2008-10-08 | Mains voltage regulator for an inductive appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0818418D0 GB0818418D0 (en) | 2008-11-12 |
| GB2464287A true GB2464287A (en) | 2010-04-14 |
Family
ID=40042467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0818418A Withdrawn GB2464287A (en) | 2008-10-08 | 2008-10-08 | Mains voltage regulator for an inductive appliance |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2464287A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015025133A1 (en) * | 2013-08-22 | 2015-02-26 | Utilitywise Plc | Voltage regulator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999012253A1 (en) * | 1997-09-02 | 1999-03-11 | Condyne Technology, Inc. | Improved single-phase induction motor safety controller |
| US20040140720A1 (en) * | 2003-01-22 | 2004-07-22 | Daniel Liu | Digital controlled power regulation device |
| EP1777792A2 (en) * | 2005-10-12 | 2007-04-25 | Black & Decker, Inc. | Control and protection methodologies for a motor control module |
-
2008
- 2008-10-08 GB GB0818418A patent/GB2464287A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999012253A1 (en) * | 1997-09-02 | 1999-03-11 | Condyne Technology, Inc. | Improved single-phase induction motor safety controller |
| US20040140720A1 (en) * | 2003-01-22 | 2004-07-22 | Daniel Liu | Digital controlled power regulation device |
| EP1777792A2 (en) * | 2005-10-12 | 2007-04-25 | Black & Decker, Inc. | Control and protection methodologies for a motor control module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015025133A1 (en) * | 2013-08-22 | 2015-02-26 | Utilitywise Plc | Voltage regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0818418D0 (en) | 2008-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |