CN110926037A - Voltage regulation control method of high-power water heater compatible with EMC - Google Patents
Voltage regulation control method of high-power water heater compatible with EMC Download PDFInfo
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- CN110926037A CN110926037A CN201911276600.XA CN201911276600A CN110926037A CN 110926037 A CN110926037 A CN 110926037A CN 201911276600 A CN201911276600 A CN 201911276600A CN 110926037 A CN110926037 A CN 110926037A
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- voltage regulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
Abstract
The invention belongs to the technical field of control methods of high-power electric appliances, in particular to a voltage regulation control method of an EMC (electro magnetic compatibility) -compatible high-power water heater, and provides the following scheme aiming at the problem that the voltage regulation technology of the high-power electric appliance of the electric water heater adopts a control method of integral voltage regulation of silicon controlled rectifier, electromagnetic interference is generated when the voltage regulation is carried out on a high-power load, and the requirement of the EMC compatibility cannot be met, wherein the scheme comprises the following steps of S1: controlling the power supply voltage of the load in a grouping mode, wherein one group adopts a silicon controlled cycle zero-crossing triggering mode, the rest groups adopt a full-wave control mode, and S2: the full-wave control method comprises the following steps: triggering by zero crossing of the thyristor cycle in N groups of full waves and 1 group of full waves, S3: the power of each group is recorded by setting the load of the full-wave group as Q1-Q2-Q3 … … and the load of the thyristor cycle zero-crossing trigger control as ZB, and the grouping power of each group is less than 3000W. The invention only generates weak electromagnetic interference when regulating the voltage of a high-power load and can meet the requirement of compatibility with EMC.
Description
Technical Field
The invention relates to the technical field of control methods of high-power electrical appliances, in particular to a voltage regulation control method of an EMC (electro magnetic compatibility) compatible high-power water heater.
Background
The EMC-compatible voltage regulation control method (EMC) for a high-power water heater refers to the capability of a device or system to operate in compliance with requirements in an electromagnetic environment and not generate intolerable electromagnetic disturbance to any device in the environment.
At present, the voltage regulation technology of the high-power electric appliance of the electric water heater adopts a control method of silicon controlled rectifier integral voltage regulation, generates electromagnetic interference when regulating the voltage of a high-power load, and can not meet the requirement of compatibility with EMC.
Disclosure of Invention
The invention aims to solve the defects that the voltage regulation technology of the high-power electric appliance of the electric water heater adopts a control method of silicon controlled rectifier integral voltage regulation, electromagnetic interference is generated when the voltage regulation is carried out on a high-power load, and the requirement of compatibility with EMC cannot be met.
In order to achieve the purpose, the invention adopts the following technical scheme:
the voltage regulation control method of the EMC compatible high-power water heater comprises the following steps:
s1: the power supply voltage of the load is controlled in a grouping mode, wherein one group adopts a silicon controlled cycle zero-crossing triggering mode, and the other groups adopt a full-wave control mode.
S2: the full-wave control method comprises the following steps: and N groups of full waves and 1 group of silicon controlled cycle zero-crossing triggering.
S3: the power of each group is recorded by setting the load of the full-wave group as Q1-Q2-Q3 … … and the load of the thyristor cycle zero-crossing trigger control as ZB, and the grouping power of each group is less than 3000W.
S4: stepless voltage regulation-boosting: the ZB controlled power opens Q1 once at maximum, at which time ZB again begins to regulate voltage from 0 or near 0, ZB full power opens Q2 a second time, and so on until full load.
S5: stepless voltage regulation-reduction: and when the power controlled by the ZB is reduced to 0 or close to 0, a group of full waves are cut off, when the power controlled by the ZB is reduced to 0 or close to 0 again, a group of full waves are cut off, and the like until the power of the whole load is 0.
S6: and the voltage regulating result is fed back to the controller, and the voltage regulating process and the voltage regulating result are displayed by a display on the controller.
Preferably, the S1 specifically includes: the voltage regulation by the silicon controlled cycle zero-crossing triggering mode also generates larger electromagnetic interference, the voltage regulation of a load below 3000W by the silicon controlled cycle zero-crossing triggering mode can meet the EMC requirement under the condition that no additional electronic devices (filters and the like) are added, the EMC requirement can not be met when the voltage regulation is more than 3000W, the electromagnetic interference is not caused or only small electromagnetic interference is caused when the load is supplied with power by full wave, and the EMC requirement can be met by adopting a combined mode of grouping full wave and silicon controlled cycle zero-crossing triggering for voltage regulation of a high-power electrical appliance.
Preferably, in S2, a plurality of switches are disposed on the zero-crossing trigger of N groups of full waves and +1 group of thyristors, and the switches represent: s1, s2 and s3, the switch being an electromagnetic switch.
Preferably, the controller in S6 is connected to two indicator lights, the indicator lights are a yellow light and a green light, and the yellow light is turned on when the voltage is not adjusted and increased; when the voltage is not regulated and reduced, the green lamp is on.
Preferably, the controller in S6 is connected to a plurality of electromagnetic switches, and the controller may automatically control the plurality of electromagnetic switches.
Preferably, the controller in S6 may perform the adjustment and operation manually, and may set the range of the pressure adjustment.
Compared with the prior art, the invention has the advantages that:
according to the scheme, under the condition that no additional electronic device (such as a filter and the like) is added, the voltage regulation of the load below 3000W can meet the EMC requirement by using a silicon controlled cycle zero-crossing triggering mode, the EMC requirement cannot be met when the voltage regulation is more than 3000W, electromagnetic interference or only small electromagnetic interference is not caused when the load is supplied with full-wave power, and the EMC requirement can be met when the high-power electrical appliance is regulated by adopting a combined mode of grouping full-wave and silicon controlled cycle zero-crossing triggering.
The invention only generates weak electromagnetic interference when regulating the voltage of a high-power load and can meet the requirement of compatibility with EMC.
Drawings
Fig. 1 is a schematic diagram of a voltage regulation control method of an EMC-compatible high-power water heater according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, the voltage regulation control method of the EMC compatible high-power water heater comprises the following steps:
s1: the power supply voltage of the load is controlled in a grouping mode, wherein one group adopts a silicon controlled cycle zero-crossing triggering mode, and the other groups adopt a full-wave control mode.
S2: the full-wave control method comprises the following steps: and N groups of full waves and 1 group of silicon controlled cycle zero-crossing triggering.
S3: the power of each group is recorded by setting the load of the full-wave group as Q1-Q2-Q3 … … and the load of the thyristor cycle zero-crossing trigger control as ZB, and the grouping power of each group is less than 3000W.
S4: stepless voltage regulation-boosting: the ZB controlled power opens Q1 once at maximum, at which time ZB again begins to regulate voltage from 0 or near 0, ZB full power opens Q2 a second time, and so on until full load.
S5: stepless voltage regulation-reduction: and when the power controlled by the ZB is reduced to 0 or close to 0, a group of full waves are cut off, when the power controlled by the ZB is reduced to 0 or close to 0 again, a group of full waves are cut off, and the like until the power of the whole load is 0.
S6: the voltage regulating result is fed back to the controller, and the voltage regulating process and the voltage regulating result are displayed through a display on the controller, so that the observation can be carried out constantly.
In this embodiment, S1 specifically includes: the voltage regulation by the silicon controlled cycle zero-crossing triggering mode also generates larger electromagnetic interference, the voltage regulation of a load below 3000W by the silicon controlled cycle zero-crossing triggering mode can meet the EMC requirement under the condition that no additional electronic devices (filters and the like) are added, the EMC requirement can not be met when the voltage regulation is more than 3000W, the electromagnetic interference is not caused or only small electromagnetic interference is caused when the load is supplied with power by full wave, and the EMC requirement can be met by adopting a combined mode of grouping full wave and silicon controlled cycle zero-crossing triggering for voltage regulation of a high-power electrical appliance.
In this embodiment, N groups of full waves and +1 group of thyristor cycle zero-cross triggers in S2 are provided with a plurality of switches, and the switches represent: s1, s2 and s3, the switch being an electromagnetic switch.
In this embodiment, the controller in S6 is connected with two indicator lights, the indicator lights are a yellow light and a green light, and the yellow light is turned on when the electrodeless voltage regulation-boosting is performed; when the electrodeless voltage regulation and reduction are carried out, the green lamp is on, and the electrodeless voltage regulation condition can be observed constantly through the yellow lamp and the green lamp.
In this embodiment, the controller in S6 is connected to the plurality of electromagnetic switches, and the controller may automatically control the plurality of electromagnetic switches.
In this embodiment, the controller in S6 may perform adjustment and operation manually, and may set the range of pressure adjustment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The voltage regulation control method of the EMC compatible high-power water heater is characterized by comprising the following steps:
s1: the power supply voltage of the load is controlled in a grouping mode, wherein one group adopts a silicon controlled cycle zero-crossing triggering mode, and the other groups adopt a full-wave control mode.
S2: the full-wave control method comprises the following steps: and N groups of full waves and 1 group of silicon controlled cycle zero-crossing triggering.
S3: the power of each group is recorded by setting the load of the full-wave group as Q1-Q2-Q3 … … and the load of the thyristor cycle zero-crossing trigger control as ZB, and the grouping power of each group is less than 3000W.
S4: stepless voltage regulation-boosting: the ZB controlled power opens Q1 once at maximum, at which time ZB again begins to regulate voltage from 0 or near 0, ZB full power opens Q2 a second time, and so on until full load.
S5: stepless voltage regulation-reduction: and when the power controlled by the ZB is reduced to 0 or close to 0, a group of full waves are cut off, when the power controlled by the ZB is reduced to 0 or close to 0 again, a group of full waves are cut off, and the like until the power of the whole load is 0.
S6: and the voltage regulating result is fed back to the controller, and the voltage regulating process and the voltage regulating result are displayed by a display on the controller.
2. The voltage regulation control method of the EMC-compatible high-power water heater according to claim 1, wherein the step S1 specifically comprises: the voltage regulation by the silicon controlled cycle zero-crossing triggering mode also generates larger electromagnetic interference, the voltage regulation of a load below 3000W by the silicon controlled cycle zero-crossing triggering mode can meet the EMC requirement under the condition that no additional electronic devices (filters and the like) are added, the EMC requirement can not be met when the voltage regulation is more than 3000W, the electromagnetic interference is not caused or only small electromagnetic interference is caused when the load is supplied with power by full wave, and the EMC requirement can be met by adopting a combined mode of grouping full wave and silicon controlled cycle zero-crossing triggering for voltage regulation of a high-power electrical appliance.
3. The voltage regulation control method of the EMC compatible high power water heater according to claim 1, wherein a plurality of switches are arranged on the zero-crossing trigger of N groups of full waves and +1 group of SCR cycles in the S2, and the switches represent: s1, s2 and s3, the switch being an electromagnetic switch.
4. The voltage regulation control method of the EMC-compatible high-power water heater according to claim 1, wherein the controller in S6 is connected with two indicator lamps, the indicator lamps are a yellow lamp and a green lamp, and the yellow lamp is turned on when no voltage regulation-boosting is performed; when the voltage is not regulated and reduced, the green lamp is lighted.
5. The voltage regulation control method of the EMC compatible high power water heater according to claim 1, wherein the controller is connected to a plurality of electromagnetic switches in S6, and the controller can automatically control the plurality of electromagnetic switches.
6. The pressure regulating control method of the EMC compatible high power water heater as claimed in claim 1, wherein the controller in S6 can be manually adjusted and operated to set the range of pressure regulation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503877A (en) * | 2020-05-07 | 2020-08-07 | 烟台卓越新能源科技股份有限公司 | Voltage-adjustable electrode type water heating equipment |
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| CN111503877A (en) * | 2020-05-07 | 2020-08-07 | 烟台卓越新能源科技股份有限公司 | Voltage-adjustable electrode type water heating equipment |
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