System with flicker control and method for reducing flicker generated by a system
A technology of controller and flicker value, which is applied in the direction of information technology support system, power network operating system integration, AC network voltage adjustment, etc., and can solve problems such as increasing power supply voltage fluctuations and inability to operate
Inactive Publication Date: 2009-12-23
NESTEC SA
View PDF3 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In addition, it can increase voltage variations on the power supply, which is undesirable where the power supply supplies an appliance that, when exposed to such voltage variations, can suffer from temporary inoperability
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] It should be understood that the drawings are only schematic and not scaled. It should also be appreciated that throughout the drawings, like reference characters indicate like or similar parts.
[0025] figure 1 An exemplary implementation of the system of the present invention is shown. exist figure 1 , the system comprises a demand liquid heater 100, such as an on-demand cartridge heater for preparing hot beverages, having a first heating stage 110 comprising a first electrical load component in the form of a first heating element 112 and a A second electrical load part in the form of a second heating element 114; a second heating stage 120 comprising a first electrical load part in the form of a first heating element 122 and a second electrical load part in the form of a second heating element 124 . The first stage 110 is arranged from T in to T 1 heats the incoming liquid, while the second stage 120 is arranged from T 1 to T out Liquid from the first stage ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A system (100) is disclosed that is arranged to be connected to an electrical power supply. The system (100) comprises a plurality of electric load component comprising stages (110, 120) for cooperatively producing an output (T out ), each stage in a first subset (110) of said stages comprising at least one electrical load component (114, 124) having a first load and each stage in a second subset (120) of said stages comprising at least one electrical load component (112, 122) having a second load, the first load being larger than the second load. The system has a controller (130) for controlling the electrical load components (112, 114, 122, 124). The controller (130) is arranged to estimate voltage variations on the electrical power supply from the switching frequencies of the respective electrical load components during a predefined time frame. The controller (130) further implements an algorithm for adjusting the switching frequencies of the electrical load components having the first load (114, 124) and the electrical load components having the second load (112, 122) in response to said estimation to reduce the voltage variations on the electrical power supply during a next time frame whilst ensuring that the plurality of stages (110, 120) are capable of producing the output (T out ) during the next time frame. The system (100) thus ensures that the amount of flicker generated by the system (100) remains within acceptable limits.
Description
technical field [0001] The invention relates to a system arranged to be connected to a power supply, the system comprising a plurality of stages cooperating to produce an output, each stage comprising an electrical load component. [0002] The invention also relates to a method for regulating voltage variations on a power supply caused by such a system in order to reduce the human perceptibility of the voltage variations in, for example, a light source connected to the power supply. Background technique [0003] The occurrence of voltage variations, especially voltage dips, on a power supply can have deleterious effects, for example voltage dips can cause electrical appliances to malfunction, or at least produce observable variations in their output. For example, an incandescent light bulb may exhibit temporary changes in its light intensity due to voltage fluctuations. This effect is commonly referred to as flicker and is understood to be an undesirable effect, especially ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY04S20/244Y02B70/3275Y04S20/242F24H9/2028Y02B70/3225Y02B70/3266Y04S20/222H02J3/14H02J2310/14Y02B70/30F24H15/414F24H15/124F24H15/20F24H15/37F24H15/407
Inventor T·帕尔默P·温特B·罗内因M·C·卢姆
Owner NESTEC SA