CN113541533A - Brushless motor control method utilizing voltage doubling principle - Google Patents
Brushless motor control method utilizing voltage doubling principle Download PDFInfo
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- CN113541533A CN113541533A CN202110798301.3A CN202110798301A CN113541533A CN 113541533 A CN113541533 A CN 113541533A CN 202110798301 A CN202110798301 A CN 202110798301A CN 113541533 A CN113541533 A CN 113541533A
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- alternating current
- voltage doubling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
Abstract
The invention discloses a brushless motor control method utilizing a voltage doubling principle, which comprises the following steps of: current conversion processing, voltage doubling circuit control, Buck voltage reduction circuit control, zero-crossing detection circuit control and heating wire circuit heat control, when an alternating current input circuit converts an alternating current input voltage into a corresponding direct current input voltage by using relevant equipment such as a rectifier, a filter and the like, R5 is communicated when alternating current is input at 110V, a voltage doubling circuit is effective, for alternating current 220V input, R5 is disconnected, a voltage doubling circuit is invalid, therefore, alternating current 110V or alternating current 220V is converted into direct current high voltage of 310V, the direct current high voltage of 310V is reduced to direct current low voltage of 15V, power is supplied to a control circuit, the zero crossing point of the alternating current input is detected, the power control time point of a synchronous heating wire is controlled, the heat of the heating wire circuit is controlled, the alternating current input voltage of 110V and 220V can share the same high-voltage brushless motor and a driving control board, a manufacturer does not need to separately prepare materials and produce, and cost reduction and efficiency improvement can be effectively achieved for the manufacturer.
Description
Technical Field
The invention relates to the field of high-voltage brushless motor control, in particular to products of a high-voltage brushless motor, such as an electric hair drier, a fan, an electric fan, a hand drier, a range hood, an air purifier and the like.
Background
The existing high-voltage brushless motor obtains high-voltage direct current driving voltage of the brushless motor after alternating current rectification and filtration, different high-voltage brushless motors are selected according to the difference of alternating current input voltage of 110V and 220V, an electronic driving control board with corresponding voltage is matched to control the operation of the high-voltage brushless motor, the high-voltage direct current driving voltage of the brushless motor obtained after alternating current input voltage of 110V and 220V are different and respectively are direct current 155V and 310V, the effective working voltage range of the existing high-voltage brushless motor can not cover direct current 155V and 310V, so different brushless motors are required to be used for alternating current input voltage of 110V and 220V, the product cost is considered, the electronic components used by the two voltage driving circuits are different, for electronic components such as a high-voltage filter electrolytic capacitor, a motor driving chip and the like, 110V is low withstand voltage large current, 220V is high withstand voltage small current, therefore, manufacturers are required to organize production according to specifications of two types of different materials, so that the production plan is lack of flexibility.
Disclosure of Invention
The invention mainly aims to provide a brushless motor control method utilizing a voltage doubling principle, which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a brushless motor control method using a voltage doubling principle includes the steps of:
s1: the current conversion processing is carried out, the AC input circuit is rectified and filtered, the rectifier is used for converting the AC input voltage of 110V and 220V into corresponding DC of 155V and 310V respectively, and then the filter is used for reducing the AC component in the pulsating DC voltage, so that the output voltage waveform becomes smoother and is connected to subsequent elements;
s2: the voltage doubling circuit is controlled, after rectification and filtration are carried out on alternating current input, direct current voltage is obtained, for alternating current 110V input, R5 is connected, the voltage doubling circuit is effective, for alternating current 220V input, R5 is disconnected, and the voltage doubling circuit is ineffective, so that the alternating current 110V or the alternating current 220V is converted into 310V direct current high voltage;
s3: the Buck voltage reduction circuit is used for controlling, reducing the direct-current high voltage of 310V into direct-current low voltage of 15V and supplying power to the control circuit;
s4: the zero-crossing detection circuit is used for detecting an alternating current input zero-crossing point and a synchronous heating wire power control time point;
s5: the heating wire circuit is used for controlling the heat quantity, and the heating quantity is adjusted by controlling the conduction time of the heating wire.
Preferably, in the step S2, the voltage doubling circuit can be automatically controlled to be turned on and off by replacing the resistor R5 with a relay or an electronic switch, the main control chip detects the input voltage, and the voltage doubling circuit is turned off immediately when the input voltage is higher than a given value.
Preferably, in the step S2, the voltage doubling circuit is used when the ac 110V power is input, and the voltage doubling technique is adopted to make the ac 110V power supply approximate to the ac 220V power supply.
Preferably, in the step S5, when the heat of the heating wire is accurately adjusted, the external environment temperature of the circuit needs to be considered, and the external temperature is kept stable by the efficient heat dissipation environment, so as to improve the accuracy of the heat adjustment.
Compared with the prior art, the invention has the following beneficial effects:
the converted direct-current voltage is controlled by using the voltage doubling technology, so that the alternating-current input voltages 110V and 220V can share the same high-voltage brushless motor and the same driving control panel, a manufacturer does not need to separately prepare materials and produce, the cost and the efficiency of the manufacturer can be effectively reduced, the alternating-current 110V power supply is similar to the alternating-current 220V power supply by using the voltage doubling technology, the working current of the high-voltage brushless motor is reduced by about half when the alternating-current 110V is input, and the heat loss of the high-voltage brushless motor and electronic components can be correspondingly reduced.
Drawings
Fig. 1 is an overall schematic diagram of a brushless motor control method using a voltage-doubling principle according to the present invention;
FIG. 2 is a schematic diagram of a voltage doubling circuit of a brushless motor control method using voltage doubling principle according to the present invention;
FIG. 3 is a schematic diagram of a Buck voltage reduction circuit of a brushless motor control method using voltage doubling principle according to the present invention;
FIG. 4 is a schematic diagram of a zero-crossing detection circuit of a brushless motor control method using voltage-doubling principle according to the present invention;
fig. 5 is a schematic diagram of a heating wire circuit of a brushless motor control method using voltage doubling principle according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, a brushless motor control method using a voltage doubling principle includes the steps of:
s1: the current conversion processing is carried out, the AC input circuit is rectified and filtered, the rectifier is used for converting the AC input voltage of 110V and 220V into corresponding DC of 155V and 310V respectively, and then the filter is used for reducing the AC component in the pulsating DC voltage, so that the output voltage waveform becomes smoother and is connected to subsequent elements;
s2: the voltage doubling circuit is controlled, after rectification and filtration are carried out on alternating current input, direct current voltage is obtained, for alternating current 110V input, R5 is connected, the voltage doubling circuit is effective, for alternating current 220V input, R5 is disconnected, and the voltage doubling circuit is ineffective, so that the alternating current 110V or the alternating current 220V is converted into 310V direct current high voltage;
s3: the Buck voltage reduction circuit is used for controlling, reducing the direct-current high voltage of 310V into direct-current low voltage of 15V and supplying power to the control circuit;
s4: the zero-crossing detection circuit is used for detecting an alternating current input zero-crossing point and a synchronous heating wire power control time point;
s5: the heating wire circuit is used for controlling the heat quantity, and the heating quantity is adjusted by controlling the conduction time of the heating wire.
In the step S2, the voltage doubling circuit can be automatically controlled to be turned on and off by replacing the resistor R5 with a relay or an electronic switch, the main control chip detects the input voltage, and the voltage doubling circuit is immediately turned off when the input voltage is higher than a given value; in the step S2, when the ac 110V is input, the voltage doubling circuit is used to make the ac 110V supply approximate to the ac 220V supply by using the voltage doubling technique; in the step S5, the external ambient temperature of the circuit needs to be considered when the precise adjustment of the heat quantity of the heating wire is performed, and the external temperature is kept stable through the efficient heat dissipation environment, so as to improve the precision of the heat quantity adjustment.
It should be noted that the invention is a brushless motor control method using voltage doubling principle, in the ac input circuit using the rectifier and filter related equipment to convert the ac input voltage into the corresponding dc input voltage, when the ac 110V input, R5 is connected, the voltage doubling circuit is effective, for the ac 220V input, R5 is disconnected, the voltage doubling circuit is ineffective, thus the ac 110V or ac 220V is converted into 310V dc high voltage, the voltage doubling circuit can be automatically controlled to open and close by replacing the resistor R5 with a relay or an electronic switch, the main control chip detects the input voltage, when the input voltage is higher than the given value, the voltage doubling circuit is immediately closed, using Buck circuit to reduce the dc high voltage 310V to dc low voltage 15V, supplying power to the control circuit, detecting the ac input zero crossing point, synchronizing the heating wire power control time point, heating wire circuit heat control, the external environment temperature of a circuit needs to be considered when the heat of the heating wire is accurately adjusted, the stability of the external temperature is kept through an efficient heat dissipation environment, so that the accuracy of heat adjustment is improved, the effective working voltage range of the existing high-voltage brushless motor cannot cover 155V and 310V of direct current, so that different brushless motors are needed to be used for 110V and 220V of alternating current input voltage, the converted direct current voltage is controlled by utilizing a voltage doubling technology, the alternating current input voltage 110V and the alternating current input voltage 220V can share the same high-voltage brushless motor and a driving control board, a manufacturer does not need to separately prepare materials and produce, cost and efficiency of the manufacturer can be effectively reduced, the alternating current 110V power supply is similar to the alternating current 220V power supply by adopting the voltage doubling technology, thus the working current of the high-voltage brushless motor is reduced by about half when the alternating current 110V is input, and the heat loss of the high-voltage brushless motor and electronic components can be correspondingly reduced, compared with the traditional brush motor, the motor can effectively reduce the cost, the volume and the energy consumption and improve the performance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A brushless motor control method using voltage doubling principle is characterized in that: the method comprises the following steps:
s1: the current conversion processing is carried out, the AC input circuit is rectified and filtered, the rectifier is used for converting the AC input voltage of 110V and 220V into corresponding DC of 155V and 310V respectively, and then the filter is used for reducing the AC component in the pulsating DC voltage, so that the output voltage waveform becomes smoother and is connected to subsequent elements;
s2, voltage doubling circuit control, namely, after rectifying and filtering the alternating current input, obtaining direct current voltage, for alternating current 110V input, R5 is connected, the voltage doubling circuit is effective, for alternating current 220V input, R5 is disconnected, and the voltage doubling circuit is invalid, so that the alternating current 110V or the alternating current 220V is converted into 310V direct current high voltage;
s3: the Buck voltage reduction circuit is used for controlling, reducing the direct-current high voltage of 310V into direct-current low voltage of 15V and supplying power to the control circuit;
s4: the zero-crossing detection circuit is used for detecting an alternating current input zero-crossing point and a synchronous heating wire power control time point;
s5: the heating wire circuit is used for controlling the heat quantity, and the heating quantity is adjusted by controlling the conduction time of the heating wire.
2. The brushless motor control method using the voltage doubling principle according to claim 1, wherein: in the step S2, the voltage doubling circuit can be automatically controlled to be turned on and off by replacing the resistor R5 with a relay or an electronic switch, the main control chip detects the input voltage, and the voltage doubling circuit is turned off immediately when the input voltage is higher than a given value.
3. The brushless motor control method using the voltage doubling principle according to claim 1, wherein: in the step S2, the voltage doubling circuit is used when the ac 110V power is input, and the voltage doubling technique is used to make the ac 110V power supply approximate to the ac 220V power supply.
4. The brushless motor control method using the voltage doubling principle according to claim 1, wherein: in the step S5, the external ambient temperature of the circuit needs to be considered when the precise adjustment of the heat quantity of the heating wire is performed, and the external temperature is kept stable through the efficient heat dissipation environment, so as to improve the accuracy of the heat quantity adjustment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110798301.3A CN113541533A (en) | 2021-07-15 | 2021-07-15 | Brushless motor control method utilizing voltage doubling principle |
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| CN202110798301.3A CN113541533A (en) | 2021-07-15 | 2021-07-15 | Brushless motor control method utilizing voltage doubling principle |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365783A (en) * | 2018-04-12 | 2018-08-03 | 厦门芯阳科技股份有限公司 | A kind of electric hair drier control circuit of high power utilization rate |
| CN109155601A (en) * | 2016-06-03 | 2019-01-04 | 松下知识产权经营株式会社 | Motor driver and electric equipment with the compressor for using the motor driver |
| CN211508931U (en) * | 2020-04-15 | 2020-09-15 | 宁波奥克斯电气股份有限公司 | Power supply identification conversion circuit and air conditioner |
| CN111835185A (en) * | 2019-04-22 | 2020-10-27 | 江苏仁源电气有限公司 | Alternating current source self-adaptive control circuit with different voltage levels and operation logic method |
| CN112737427A (en) * | 2021-01-15 | 2021-04-30 | 北京绿能芯创电子科技有限公司 | High-speed DC brushless motor driver |
-
2021
- 2021-07-15 CN CN202110798301.3A patent/CN113541533A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109155601A (en) * | 2016-06-03 | 2019-01-04 | 松下知识产权经营株式会社 | Motor driver and electric equipment with the compressor for using the motor driver |
| CN108365783A (en) * | 2018-04-12 | 2018-08-03 | 厦门芯阳科技股份有限公司 | A kind of electric hair drier control circuit of high power utilization rate |
| CN111835185A (en) * | 2019-04-22 | 2020-10-27 | 江苏仁源电气有限公司 | Alternating current source self-adaptive control circuit with different voltage levels and operation logic method |
| CN211508931U (en) * | 2020-04-15 | 2020-09-15 | 宁波奥克斯电气股份有限公司 | Power supply identification conversion circuit and air conditioner |
| CN112737427A (en) * | 2021-01-15 | 2021-04-30 | 北京绿能芯创电子科技有限公司 | High-speed DC brushless motor driver |
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