CN203151370U - Control circuit of frequency conversion air compressor - Google Patents
Control circuit of frequency conversion air compressor Download PDFInfo
- Publication number
- CN203151370U CN203151370U CN 201320086240 CN201320086240U CN203151370U CN 203151370 U CN203151370 U CN 203151370U CN 201320086240 CN201320086240 CN 201320086240 CN 201320086240 U CN201320086240 U CN 201320086240U CN 203151370 U CN203151370 U CN 203151370U
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- circuit
- frequency conversion
- air compressor
- control circuit
- conversion air
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Abstract
The utility model provides a control circuit of a frequency conversion air compressor which is low in cost and satisfies requirements. The control circuit of the frequency conversion air compressor comprises multistage electromagnetic interference (EMI) filter circuits, a converter, an intermediate switching circuit and an inverter circuit which are connected with an AC power supply orderly, the inverter circuit is connected with a frequency conversion controller and a compressor separately, and the multistage EMI filter circuits comprise two stages or more than two stages of power supply EMI filters. By being equipped with the multistage EMI filter circuits, the control circuit of the frequency conversion air compressor of the utility model can restrain the EMI of various components in the circuit effectively, thereby satisfying the requirements of EMC indexes completely. The control circuit of the frequency conversion air compressor of the utility model is simple in structure and low in development cost, can be used in the conventional frequency conversion air compressor directly, and has very good social and economic benefits.
Description
Technical field
The utility model relates to a kind of control circuit, especially a kind of control circuit of frequency conversion air compressor.
Background technology
The frequency conversion air compressor refers to and can regulate the operating frequency of compressor automatically according to the variation of ambient temperature, thus the air compressor of control room temperature.In the circuit of frequency conversion air compressor, converter converts the alternating current of AC power input to direct current, controller determines that according to the variation of ambient temperature the operating frequency of compressor is to determine the driving signal of inverter, inverter draws the direct current that every converter is transformed into according to the driving letter of controller output and converts alternating current to, thus the drive compressor operating.
Because the inverter of frequency conversion air compressor and the use of converter are deposited and produced very big electromagnetic disturbance in the circuit, therefore, must suppress electromagnetic disturbance (EMI) in the frequency conversion air compressor to satisfy the Electromagnetic Compatibility index.The EMC filter circuit includes power filter and passive filter circuit.The design complexity of active filter circuit, the cost height, the construction cycle is long; Traditional passive filter circuit is difficult to reach the EMC index as shown in Figure 1.
The utility model content
The utility model provides that a kind of cost is low, the control circuit of the frequency conversion air compressor that meets the demands.
Realize the control circuit of a kind of frequency conversion air compressor of the utility model purpose, comprise the multistage electromagnetic interference filter circuit, converter, intermediate conversion circuit and the inverter circuit that are connected successively with AC power; Described inverter circuit is connected with compressor with frequency-variable controller respectively; Described multistage EMI filter circuit comprises two-stage or the above power supply electromagnetic interface filter of two-stage.
Converter is used for alternating current input power supplying is transformed into DC power supply; Inverter is used for the DC power supply that forms through the converter conversion is transformed into for driving the AC power that compressor rotates.
Also be provided with harmonic wave between described AC power and the multistage EMI filter circuit and suppress circuit.
Described harmonic wave inhibition circuit is joined principle by inductance and electrodeless electric capacity according to difference and is formed by connecting, and described inductance is connected on the live wire, and described electrodeless electric capacity is connected in parallel on after the inductance.
Described converter is rectifier bridge, in the output parallel connection of rectifier bridge an electrochemical capacitor, the diode of between the output of rectifier bridge and intermediate conversion circuit inductance, having connected, the branch road that is in series in described diode and intermediate conversion circuit inductance is parallel with an electric capacity; Negative pole end at described rectifier bridge can also connect a Y electric capacity.
Described power supply electromagnetic interface filter includes common mode choke, an X electric capacity and two the 2nd Y electric capacity.
Described multistage EMI filter circuit comprises the three stage power source electromagnetic interface filter, and the output of first order power supply electromagnetic interface filter forms two in parallel branch roads, each branch road connect respectively a second level power supply electromagnetic interface filter and a third level power supply electromagnetic interface filter.
The beneficial effect of the control circuit of a kind of frequency conversion air compressor of the present utility model is as follows:
The control circuit of a kind of frequency conversion air compressor of the present utility model owing to be provided with multistage electromagnetic disturbance (EMI) filter circuit, can effectively suppress the electromagnetic disturbance portion of the various compositions in the circuit, thereby satisfies the requirement of EMC index fully; Circuit structure of the present utility model is simple, and development cost is low, can directly apply to existing frequency conversion air compressor, has good social benefit and economic benefit.
Description of drawings
Fig. 1 is the structural representation of the circuit of passive filter circuit.
Embodiment one structural representation of the control circuit of Fig. 2 a kind of frequency conversion air compressor of the present utility model.
Embodiment two structural representations of the control circuit of Fig. 3 a kind of frequency conversion air compressor of the present utility model.
Embodiment
Embodiment 1
As shown in Figure 1, the control circuit of a kind of frequency conversion air compressor of present embodiment comprises the multistage electromagnetic interference filter circuit, converter, intermediate conversion circuit and the inverter circuit that are connected successively with AC power; Described inverter circuit is connected with compressor with frequency-variable controller respectively; Described multistage EMI filter circuit comprises two-stage or the above power supply electromagnetic interface filter of two-stage.
Converter is used for alternating current input power supplying is transformed into DC power supply; Inverter is used for the DC power supply that forms through the converter conversion is transformed into for driving the AC power that compressor rotates.
Described harmonic wave inhibition circuit is joined principle by inductance and electrodeless electric capacity according to difference and is formed by connecting, and described inductance is connected on the live wire, and described electrodeless electric capacity is connected in parallel on after the inductance.
Described converter is rectifier bridge, in the output parallel connection of rectifier bridge an electrochemical capacitor, the diode of between the output of rectifier bridge and intermediate conversion circuit inductance, having connected, the branch road that is in series in described diode and intermediate conversion circuit inductance is parallel with an electric capacity; Negative pole end at described rectifier bridge can also connect a Y electric capacity.
Described power supply electromagnetic interface filter includes common mode choke, an X electric capacity and two the 2nd Y electric capacity.
Described multistage EMI filter circuit comprises the three stage power source electromagnetic interface filter, and the output of first order power supply electromagnetic interface filter forms two in parallel branch roads, each branch road connect respectively a second level power supply electromagnetic interface filter and a third level power supply electromagnetic interface filter.
Embodiment 2
As shown in Figure 2, the control circuit of a kind of frequency conversion air compressor of present embodiment is identical with basic structure and the principle of embodiment 1, and different is: also be provided with harmonic wave between described AC power and the multistage EMI filter circuit and suppress circuit.
Embodiment recited above is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; design under the spiritual prerequisite not breaking away from the utility model; various distortion and improvement that the common engineers and technicians in this area make technical solutions of the utility model all should fall in the definite protection range of claims of the present utility model.
Claims (6)
1. the control circuit of a frequency conversion air compressor is characterized in that: comprise the multistage electromagnetic interference filter circuit, converter, intermediate conversion circuit and the inverter circuit that are connected successively with AC power; Described inverter circuit is connected with compressor with frequency-variable controller respectively; Described multistage EMI filter circuit comprises two-stage or the above power supply electromagnetic interface filter of two-stage.
2. the control circuit of a kind of frequency conversion air compressor according to claim 1 is characterized in that: also be provided with harmonic wave between described AC power and the multistage EMI filter circuit and suppress circuit.
3. the control circuit of a kind of frequency conversion air compressor according to claim 1 and 2, it is characterized in that: described harmonic wave inhibition circuit is joined principle by inductance and electrodeless electric capacity according to difference and is formed by connecting, described inductance is connected on the live wire, and described electrodeless electric capacity is connected in parallel on after the inductance.
4. the control circuit of a kind of frequency conversion air compressor according to claim 1 and 2, it is characterized in that: described converter is rectifier bridge, in the output parallel connection of rectifier bridge an electrochemical capacitor, the diode of between the output of rectifier bridge and intermediate conversion circuit inductance, having connected, the branch road that is in series in described diode and intermediate conversion circuit inductance is parallel with an electric capacity; Negative pole end at described rectifier bridge can also connect a Y electric capacity.
5. the control circuit of a kind of frequency conversion air compressor according to claim 1 and 2, it is characterized in that: described power supply electromagnetic interface filter comprises common mode choke, an X electric capacity and two the 2nd Y electric capacity.
6. the control circuit of a kind of frequency conversion air compressor according to claim 1 and 2, it is characterized in that: described multistage EMI filter circuit comprises the three stage power source electromagnetic interface filter, the output of first order power supply electromagnetic interface filter forms two in parallel branch roads, each branch road connect respectively a second level power supply electromagnetic interface filter and a third level power supply electromagnetic interface filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320086240 CN203151370U (en) | 2013-02-26 | 2013-02-26 | Control circuit of frequency conversion air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320086240 CN203151370U (en) | 2013-02-26 | 2013-02-26 | Control circuit of frequency conversion air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203151370U true CN203151370U (en) | 2013-08-21 |
Family
ID=48978863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320086240 Expired - Fee Related CN203151370U (en) | 2013-02-26 | 2013-02-26 | Control circuit of frequency conversion air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203151370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087226A (en) * | 2021-11-30 | 2022-02-25 | 上海氢蓝新能源科技有限公司 | Air compressor control system, method and storage medium for hydrogen fuel cell system |
-
2013
- 2013-02-26 CN CN 201320086240 patent/CN203151370U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087226A (en) * | 2021-11-30 | 2022-02-25 | 上海氢蓝新能源科技有限公司 | Air compressor control system, method and storage medium for hydrogen fuel cell system |
| CN114087226B (en) * | 2021-11-30 | 2024-03-19 | 上海氢蓝新能源科技有限公司 | Control system and method for air compressor of hydrogen fuel cell system and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140226 |