CN214850963U - Power supply circuit of motor controller and motor controller - Google Patents
Power supply circuit of motor controller and motor controller Download PDFInfo
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- CN214850963U CN214850963U CN202121381477.0U CN202121381477U CN214850963U CN 214850963 U CN214850963 U CN 214850963U CN 202121381477 U CN202121381477 U CN 202121381477U CN 214850963 U CN214850963 U CN 214850963U
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- circuit
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- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- 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
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
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- 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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a motor controller's power supply circuit and motor controller, including three-phase filter circuit, three-phase surge protection circuit, three-phase rectifier circuit, reactor L1 and electrolytic capacitor, get into three-phase rectifier circuit's input behind three-phase AC input U, V, W through three-phase filter circuit's filtering treatment and the three-phase surge protection circuit, three-phase rectifier circuit's output charges and forms direct current bus voltage Vbus output to electrolytic capacitor after reactor L1 adjusts power factor, effectively can resist the impact of 6KV surge, the interference killing feature is strong, protection electronic components and parts, the stability and the reliability of improvement motor controller.
Description
The technical field is as follows:
the utility model relates to a machine controller's power supply circuit and machine controller.
Background art:
the problem of electromagnetic compatibility is becoming an important issue in electronic devices or systems, and electromagnetic compatibility is also an important technical indicator of electronic devices or systems. Especially, the surge impact immunity test is particularly critical. In a 6KV surge impact immunity test, an electric controller is damaged, the controller fails, and the stability and the reliability are poor.
The invention content is as follows:
the utility model aims at providing a motor controller's power supply circuit and motor controller can solve motor controller among the prior art, and is serious at high pressure electromagnetic interference, in the impact immunity of 6KV surge is experimental, and electronic components damages, and the controller loses effect, stability and the poor technical problem of reliability.
The purpose of the utility model is realized by the following technical scheme.
A power supply circuit for a motor controller, characterized by: the commercial power three-phase alternating current input U, V, W enters the input end of the three-phase rectification circuit after being subjected to filtering processing of the three-phase filtering circuit and the three-phase surge protection circuit, and the output end of the three-phase rectification circuit is used for charging the electrolytic capacitor after the power factor is adjusted through the reactor L1 to form direct current bus voltage Vbus output.
The position sequence of the three-phase filter circuit and the three-phase surge protection circuit is changeable, namely, the three-phase alternating current input U, V, W of the commercial power firstly passes through the three-phase surge protection circuit and then enters the input end of the three-phase rectification circuit after being filtered by the three-phase filter circuit.
The positive temperature coefficient resistor PTC1 is connected in series between the reactor L1 and the electrolytic capacitor, the relay switch RY is connected in parallel at two ends of the positive temperature coefficient resistor PTC1, when the power supply is switched on in the initial stage, the relay switch RY is in an off state, and the current at the output end of the three-phase rectifying circuit passes through the reactor L1 and the positive temperature coefficient resistor PTC1 to charge the electrolytic capacitor; after a certain time delay, the relay switch RY is in a closed state, and the current at the output end of the three-phase rectification circuit directly charges the electrolytic capacitor through the reactor L1.
The relay switch RY is driven by a delay circuit and a driving circuit, the circuit starts to work when the initial delay of the power supply is connected, and when the delay circuit outputs a signal to drive the driving circuit to work, the relay switch RY is changed from an open state to a closed state.
Two ends of the reactor L1 are connected in parallel with an RCD voltage clamping circuit, the RCD voltage clamping circuit comprises a resistor R0, a capacitor C0 and a diode D0, and the resistor R0 and the capacitor C0 are connected in parallel and then connected in series with the diode D0.
The two ends of the reactor L1 are also connected with a voltage dependent resistor VAR1 in parallel.
The electrolytic capacitor is formed by connecting a capacitor C5 and a capacitor C4 in series, and a voltage dependent resistor VAR2 is connected in parallel at two ends after the capacitor C5 and the capacitor C4 are connected in series.
The capacitor C5 is discharged by a resistor R1 and a resistor R2, and the resistor R1 and the resistor R2 are connected in series and then are connected in parallel at two ends of the capacitor C5; the capacitor C4 is discharged by the resistor R3 and the resistor R4, and the resistor R3 and the resistor R4 are connected in series and then connected in parallel at two ends of the capacitor C4.
The three-phase surge protection circuit comprises a piezoresistor VAR3, a piezoresistor VAR4, a piezoresistor VAR5, a piezoresistor VAR6 and a discharge tube T, wherein the piezoresistor VAR3, the piezoresistor VAR4 and the piezoresistor VAR5 are respectively connected between any two phases of a three-phase alternating current input U, V, W of a mains supply; the varistor VAR6 and the discharge tube T are connected in series, and then one end is grounded, and the other end is connected to any phase of the three-phase ac input U, V, W of the commercial power.
The three-phase filter circuit is an LC filter circuit, and the LC filter circuit comprises a three-phase inductor L0, a capacitor C1, a capacitor C2 and a capacitor C3.
The utility model provides a motor controller, includes power supply circuit, motor microprocessor and inverter circuit, and wherein power supply circuit's output is motor microprocessor and inverter circuit power supply, and motor microprocessor outputs control signal control inverter circuit work, its characterized in that: the power supply circuit is the power supply circuit of the motor controller.
Compared with the prior art, the utility model, following effect has:
1) the utility model discloses a motor controller's power supply circuit, including three-phase filter circuit, three-phase surge protection circuit, three-phase rectifier circuit, reactor L1 and electrolytic capacitor, get into three-phase rectifier circuit's input behind three-phase AC input U, V, W of commercial power through three-phase filter circuit's filtering treatment and three-phase surge protection circuit, three-phase rectifier circuit's output charges electrolytic capacitor after reactor L1 adjusts power factor, and form direct current bus voltage Vbus output, can effectively resist the impact of 6KV surge, the interference killing feature is strong, protection electronic components, the stability and the reliability of improvement motor controller, and power factor obviously improves.
2) Other advantages of the present invention will be described in detail in the examples section.
Description of the drawings:
fig. 1 is a schematic diagram of a part of a circuit provided in a first embodiment of the present invention;
fig. 2 is a schematic diagram of another part of a circuit provided in the first embodiment of the present invention;
fig. 3 is a circuit diagram corresponding to the delay driving part of a relay according to an embodiment of the present invention;
fig. 4 is a schematic diagram provided in the second embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1, fig. 2, and fig. 3, the present embodiment provides a power supply circuit of a motor controller, which is characterized in that: the commercial power three-phase alternating current input U, V, W enters the input end of the three-phase rectification circuit after being subjected to filtering processing of the three-phase filtering circuit and the three-phase surge protection circuit, and the output end of the three-phase rectification circuit is used for charging the electrolytic capacitor after the power factor is adjusted through the reactor L1 to form direct current bus voltage Vbus output. The three-phase alternating current input U, V, W of commercial power enters the input end of the three-phase rectification circuit after passing through the filtering processing of the three-phase filter circuit and the three-phase surge protection circuit, can effectively resist the impact of 6KV surge, has strong anti-interference capability, protects electronic components and parts not to be easily damaged, improves the stability and reliability of the motor controller, and obviously improves the power factor.
The position sequence of the three-phase filter circuit and the three-phase surge protection circuit is changeable, namely, the three-phase alternating current input U, V, W of the commercial power firstly passes through the three-phase surge protection circuit and then enters the input end of the three-phase rectification circuit after being filtered by the three-phase filter circuit.
The positive temperature coefficient resistor PTC1 is connected in series between the reactor L1 and the electrolytic capacitor, the relay switch RY is connected in parallel at two ends of the positive temperature coefficient resistor PTC1, when the power supply is switched on in the initial stage, the relay switch RY is in an off state, and the current at the output end of the three-phase rectifying circuit passes through the reactor L1 and the positive temperature coefficient resistor PTC1 to charge the electrolytic capacitor; after a certain time delay, the relay switch RY is in a closed state, and the current at the output end of the three-phase rectification circuit directly charges the electrolytic capacitor through the reactor L1. The positive temperature coefficient resistor PTC1 can increase self-heating along with the increase of current, the resistance value also increases sharply, the current can be restrained from being overlarge in the initial power-on stage, and components and parts are effectively protected.
The relay switch RY is driven by a delay circuit and a driving circuit, the circuit starts to work when the initial delay of the power supply is connected, and when the delay circuit outputs a signal to drive the driving circuit to work, the relay switch RY is changed from an open state to a closed state. The circuit structure is simple and easy to implement. In fig. 3, the delay circuit includes a resistor R9, a capacitor C6, a capacitor C7, and a zener diode D14; the driving circuit is a push-pull type driving circuit and comprises a triode Q1, a triode Q2, a resistor R6, a resistor R7 and a resistor R8.
Two ends of the reactor L1 are connected in parallel with an RCD voltage clamping circuit, the RCD voltage clamping circuit comprises a resistor R0, a capacitor C0 and a diode D0, and the resistor R0 and the capacitor C0 are connected in parallel and then connected in series with the diode D0. The voltage at two ends of the reactor L1 can be effectively clamped, and the impact of 6KV surge can be effectively resisted at the direct current end.
The two ends of the reactor L1 are also connected with a voltage dependent resistor VAR1 in parallel, so that overvoltage at the two ends of the reactor L1 can be absorbed, and the impact of 6KV surge can be resisted at the direct current end more effectively.
The electrolytic capacitor is formed by serially connecting a capacitor C5 and a capacitor C4, and a voltage dependent resistor VAR2 is connected in parallel at two ends after the capacitor C5 and the capacitor C4 are serially connected, so that the voltage at two ends after the capacitor C5 and the capacitor C4 are serially connected is prevented from being too large, and components are effectively protected.
The capacitor C5 is discharged by a resistor R1 and a resistor R2, and the resistor R1 and the resistor R2 are connected in series and then are connected in parallel at two ends of the capacitor C5; the capacitor C4 is discharged by the resistor R3 and the resistor R4, and the resistor R3 and the resistor R4 are connected in series and then connected in parallel at two ends of the capacitor C4.
The three-phase surge protection circuit comprises a piezoresistor VAR3, a piezoresistor VAR4, a piezoresistor VAR5, a piezoresistor VAR6 and a discharge tube T, wherein the piezoresistor VAR3, the piezoresistor VAR4 and the piezoresistor VAR5 are respectively connected between any two phases of a three-phase alternating current input U, V, W of a mains supply; one end of the piezoresistor VAR6 is grounded after being connected with the discharge tube T in series, and the other end of the piezoresistor VAR6 is connected with any phase of the three-phase alternating current input U, V, W of the commercial power.
The three-phase filter circuit is an LC filter circuit which comprises a three-phase inductor L0, a capacitor C1, a capacitor C2 and a capacitor C3, and is simple in structure and high in anti-interference capability.
Example two:
as shown in fig. 4, this embodiment provides a motor controller, including power supply circuit, motor microprocessor and inverter circuit, wherein power supply circuit's output is motor microprocessor and inverter circuit power supply, and motor microprocessor outputs control signal control inverter circuit work, its characterized in that: the power supply circuit is the power supply circuit of the motor controller in the first embodiment. The motor controller can effectively resist the impact of 6KV surge, has strong anti-interference capability, protects electronic components from being damaged difficultly, improves the stability and reliability of the motor controller, and obviously improves the power factor.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (11)
1. A power supply circuit for a motor controller, characterized by: the commercial power three-phase alternating current input U, V, W enters the input end of the three-phase rectification circuit after being subjected to filtering processing of the three-phase filtering circuit and the three-phase surge protection circuit, and the output end of the three-phase rectification circuit is used for charging the electrolytic capacitor after the power factor is adjusted through the reactor L1 to form direct current bus voltage Vbus output.
2. A power supply circuit for a motor controller according to claim 1, wherein: the position sequence of the three-phase filter circuit and the three-phase surge protection circuit is changeable, namely, the three-phase alternating current input U, V, W of the commercial power firstly passes through the three-phase surge protection circuit and then enters the input end of the three-phase rectification circuit after being filtered by the three-phase filter circuit.
3. A power supply circuit for a motor controller according to claim 1, wherein: a positive temperature coefficient resistor PTC1 is connected in series between the reactor L1 and the electrolytic capacitor, two ends of the positive temperature coefficient resistor PTC1 are connected with a relay switch RY in parallel, when the power supply is switched on in the initial stage, the relay switch RY is in an off state, and the current at the output end of the three-phase rectifying circuit passes through the reactor L1 and the positive temperature coefficient resistor PTC1 to charge the electrolytic capacitor; after a certain time delay, the relay switch RY is in a closed state, and the current at the output end of the three-phase rectification circuit directly charges the electrolytic capacitor through the reactor L1.
4. A power supply circuit for a motor controller according to claim 3, wherein: the relay switch RY is driven by a delay circuit and a driving circuit, the circuit starts to work when the initial delay of the power supply is connected, and when the delay circuit has an output signal to drive the driving circuit to work, the relay switch RY is changed from an open state to a closed state.
5. A power supply circuit for a motor controller according to claim 1, 2, 3 or 4, wherein: two ends of the reactor L1 are connected with an RCD voltage clamping circuit in parallel, the RCD voltage clamping circuit comprises a resistor R0, a capacitor C0 and a diode D0, and the resistor R0 and the capacitor C0 are connected in parallel and then connected with the diode D0 in series.
6. The power supply circuit of a motor controller according to claim 5, wherein: both ends of the reactor L1 are also connected with a voltage dependent resistor VAR1 in parallel.
7. A power supply circuit for a motor controller according to claim 1, 2, 3 or 4, wherein: the electrolytic capacitor is formed by connecting a capacitor C5 and a capacitor C4 in series, and after the capacitor C5 and the capacitor C4 are connected in series, two ends of the capacitor C4 are connected in parallel with a voltage dependent resistor VAR 2.
8. A power supply circuit for a motor controller according to claim 7, wherein: the capacitor C5 is discharged by a resistor R1 and a resistor R2, and the resistor R1 and the resistor R2 are connected in series and then connected in parallel at two ends of the capacitor C5; the capacitor C4 is discharged by the resistor R3 and the resistor R4, and the resistor R3 and the resistor R4 are connected in series and then connected in parallel at two ends of the capacitor C4.
9. A power supply circuit for a motor controller according to claim 6, wherein: the three-phase surge protection circuit comprises a piezoresistor VAR3, a piezoresistor VAR4, a piezoresistor VAR5, a piezoresistor VAR6 and a discharge tube T, wherein the piezoresistor VAR3, the piezoresistor VAR4 and the piezoresistor VAR5 are respectively connected between any two phases of a three-phase alternating current input U, V, W of a mains supply; the varistor VAR6 and the discharge tube T are connected in series, and then one end is grounded, and the other end is connected to any phase of the three-phase ac input U, V, W of the commercial power.
10. A power supply circuit for a motor controller according to claim 9, wherein: the three-phase filter circuit is an LC filter circuit, and the LC filter circuit comprises a three-phase inductor L0, a capacitor C1, a capacitor C2 and a capacitor C3.
11. The utility model provides a motor controller, includes power supply circuit, motor microprocessor and inverter circuit, and wherein power supply circuit's output is motor microprocessor and inverter circuit power supply, and motor microprocessor outputs control signal control inverter circuit work, its characterized in that: the power supply circuit is a power supply circuit of a motor controller as claimed in any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121381477.0U CN214850963U (en) | 2021-06-22 | 2021-06-22 | Power supply circuit of motor controller and motor controller |
| PCT/CN2021/115563 WO2022267220A1 (en) | 2021-06-22 | 2021-08-31 | Power supply circuit for motor controller, and motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121381477.0U CN214850963U (en) | 2021-06-22 | 2021-06-22 | Power supply circuit of motor controller and motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214850963U true CN214850963U (en) | 2021-11-23 |
Family
ID=78808790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121381477.0U Active CN214850963U (en) | 2021-06-22 | 2021-06-22 | Power supply circuit of motor controller and motor controller |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN214850963U (en) |
| WO (1) | WO2022267220A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4573113A (en) * | 1984-01-26 | 1986-02-25 | Borg-Warner Corporation | Surge protection system for a d-c power supply during power-up |
| CN201315484Y (en) * | 2008-11-25 | 2009-09-23 | 海信（山东）空调有限公司 | Surge voltage suppressing circuit and air conditioner comprising same |
| CN203840210U (en) * | 2014-03-24 | 2014-09-17 | 浙江商业职业技术学院 | AC inverter circuit |
| CN209627225U (en) * | 2019-01-16 | 2019-11-12 | 广东美的制冷设备有限公司 | Drive control circuit, air-conditioner controller and air conditioner |
-
2021
- 2021-06-22 CN CN202121381477.0U patent/CN214850963U/en active Active
- 2021-08-31 WO PCT/CN2021/115563 patent/WO2022267220A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022267220A1 (en) | 2022-12-29 |
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