CN215734035U - Power supply conversion circuit and motor controller - Google Patents
Power supply conversion circuit and motor controller Download PDFInfo
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- CN215734035U CN215734035U CN202121454154.XU CN202121454154U CN215734035U CN 215734035 U CN215734035 U CN 215734035U CN 202121454154 U CN202121454154 U CN 202121454154U CN 215734035 U CN215734035 U CN 215734035U
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- pin
- voltage stabilizing
- stabilizing chip
- power supply
- capacitor
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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
- H02M3/00—Conversion of dc power input into dc power output
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
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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
- 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
Abstract
The utility model discloses a power supply conversion circuit and a power supply circuit capable of realizing multi-path power supply output, the power supply conversion circuit comprises a voltage stabilizing chip IC1, a voltage stabilizing chip IC2, a capacitor C2, a capacitor C3 and a capacitor C4, an input direct-current power supply VCC is respectively connected with a pin 3 of a voltage stabilizing chip IC1 and a pin 3 of the voltage stabilizing chip IC2, a pin 1 of the voltage stabilizing chip IC2 is connected with a GND, a pin 1 of the voltage stabilizing chip IC1 is connected with a pin 2 of the voltage stabilizing chip IC2, a capacitor C2 is connected between the pin 2 of the voltage stabilizing chip IC1 and the pin 2 of the voltage stabilizing chip IC2, a capacitor C3 is connected between the pin 1 of the voltage stabilizing chip IC2 and the pin 2 of the voltage stabilizing chip IC2, a capacitor C4 is connected between the pin 2 of the voltage stabilizing chip IC1 and the pin 1 of the voltage stabilizing chip IC2, a first output power supply + VSS is led out from two ends of a capacitor C3, a second output power supply + VSS is led out from two ends, a capacitor C4-VSS is led out from two ends, and a third output voltage supply is led out from two ends, and a high-VSS output high precision voltage output is led out from two ends of a high precision voltage output by a high precision multi-V + E, The stability is high.
Description
The technical field is as follows:
the utility model belongs to the field of motor power circuits, and particularly relates to a power conversion circuit and a motor controller.
Background art:
the existing direct current motor is provided with an MCU (microprogrammed control Unit), a driving circuit, current and voltage sampling and the like, multiple power supplies are required to meet the requirement of multiple power supply outputs, in order to meet the requirement of multiple power supply outputs, the simplest processing method is to use a transformer with multiple windings to meet the multiple power supply outputs, an input power supply of the direct current motor is a DC power supply, the DC power supply is from mains supply conversion, and therefore a power supply conversion circuit appears, the existing power supply conversion circuit can refer to a figure 1 specifically, and generally, the circuit adopts a single-ended flyback DC-DC conversion circuit.
The power transformer T in fig. 1 may be a power frequency transformer or a high frequency transformer, C1, C2, C3, and C4 are energy storage filter capacitors, D1, D2, D3, and D4 are rectifier diodes, and each winding is controlled in an open loop manner, so that output voltages of each output power supply are different from each other, when an input power supply fluctuates, output voltages of each output power supply fluctuate synchronously, a multi-output power supply cannot perform closed-loop control on each winding, and thus stability of each power supply cannot be guaranteed, and voltages of positive and negative power supplies of + VSS and VSS double paths cannot be guaranteed to be consistent, so that voltages of positive and negative power supplies of + VSS and VSS double paths converted by a dc power supply through the power conversion circuit have low precision and are unstable; in addition, in the conventional power conversion circuit, when any one output power supply fails and is short-circuited, the power conversion circuit or the transformer is burnt.
The utility model content is as follows:
the utility model aims to provide a power supply conversion circuit and a motor controller, which can solve the technical problems of low precision and poor stability of multi-output power supply voltage converted by a transformer in the power supply conversion circuit in the prior art.
The purpose of the utility model is realized by the following technical scheme.
A power conversion circuit, characterized by: the power supply circuit comprises a voltage stabilizing chip IC1, a voltage stabilizing chip IC2, a capacitor C2, a capacitor C3 and a capacitor C4, wherein an input direct-current power supply VCC is respectively connected with a pin 3 of the voltage stabilizing chip IC1 and a pin 3 of the voltage stabilizing chip IC2, a pin 1 of the voltage stabilizing chip IC2 is connected with a ground GND, a pin 1 of the voltage stabilizing chip IC1 is connected to a pin 2 of the voltage stabilizing chip IC2, the capacitor C2 is connected between a pin 2 of the voltage stabilizing chip IC1 and a pin 2 of the voltage stabilizing chip IC2, the capacitor C3 is connected between the pin 1 of the voltage stabilizing chip IC2 and the pin 2 of the voltage stabilizing chip IC2, the capacitor C4 is connected between the pin 2 of the voltage stabilizing chip IC1 and the pin 1 of the voltage stabilizing chip IC2, a first output power supply + VSS is led out from two ends of the capacitor C2, a second output power supply-VSS is led out from two ends of the capacitor C3, and a third output power supply + VEE is led out from two ends of the capacitor C4.
The resistor R1 is connected between pin 1 of the regulator chip IC1 and pin 2 of the regulator chip IC 2.
A diode D1 is connected between pin No. 2 of the regulator chip IC1 and pin No. 1 of the regulator chip IC1, the cathode of the diode D1 is connected to pin No. 2 of the regulator chip IC1, and the anode of the diode D1 is connected to pin No. 1 of the regulator chip IC 1.
An energy storage capacitor C1 is connected between the input dc power VCC and the ground GND, one end of the energy storage capacitor C1 is connected to the pin 3 of the voltage stabilizing chip IC1 and the voltage stabilizing chip IC2, the other end of the energy storage capacitor C1 is connected to the ground GND, and the energy storage capacitor C1 provides a stable power supply for the voltage stabilizing chip IC1 and the voltage stabilizing chip IC 2.
The utility model provides a motor controller, includes power supply circuit, microprocessor MCU and inverter circuit, and power supply circuit is microprocessor MCU and inverter circuit power supply, its characterized in that: the power supply circuit adopts the power conversion circuit.
The power conversion circuit includes a plurality of power conversion circuits connected in parallel.
The plurality of power conversion circuits is 2 or more than 2.
Compared with the prior art, the utility model has the following effects:
1) according to the scheme, the power conversion circuit replaces a transformer by using 2 voltage stabilizing chips, the single-path power input can be adopted, then 3 paths of power output are separated out to supply power for the motor system, the precision of the voltage of the 3 paths of output power converted by the voltage stabilizing chips is high, the stability is high, the requirement of a multi-path power supply required by a motor controller can be met, the protection function of the voltage stabilizing chips is perfect, the stability and the reliability of the power conversion circuit can be effectively improved, and the working stability of a motor is improved.
2) Other advantages of the present invention are described in detail in the examples section.
Description of the drawings:
fig. 1 is a schematic circuit diagram of a power conversion circuit provided in the prior art;
fig. 2 is a schematic circuit diagram of a power conversion circuit according to an embodiment of the present invention;
fig. 3 is a block diagram of a motor controller according to a second embodiment of the present invention;
fig. 4 is a circuit diagram of a second embodiment of the present invention, which employs a plurality of power conversion circuits.
The specific implementation mode is as follows:
the present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
As shown in fig. 2, the present embodiment provides a power conversion circuit, which is characterized in that: the power supply comprises a voltage stabilizing chip IC1, a voltage stabilizing chip IC2, a capacitor C2, a capacitor C3 and a capacitor C4, wherein an input direct-current power supply VCC is respectively connected with a pin 3 of the voltage stabilizing chip IC1 and a pin 3 of the voltage stabilizing chip IC2, a pin 1 of the voltage stabilizing chip IC2 is connected with a ground GND, a pin 1 of the voltage stabilizing chip IC1 is connected to a pin 2 of the voltage stabilizing chip IC2, the capacitor C2 is connected between a pin 2 of the voltage stabilizing chip IC1 and a pin 2 of the voltage stabilizing chip IC2, the capacitor C3 is connected between the pin 1 of the voltage stabilizing chip IC2 and the pin 2 of the voltage stabilizing chip IC2, the capacitor C4 is connected between the pin 2 of the voltage stabilizing chip IC1 and the pin 1 of the voltage stabilizing chip IC2, a first output power supply + VSS is led out from two ends of the capacitor C2, a second output power supply-VSS is led out from two ends of the capacitor C3, and a third output power supply + E is led out from two ends of the capacitor C4; in the present embodiment, the capacitor C2, the capacitor C3 and the capacitor C4 are all output filter capacitors; pin 1 of the voltage stabilizing chip IC1 is a grounding pin, pin 2 of the voltage stabilizing chip IC1 is an output pin, and pin 3 of the voltage stabilizing chip IC1 is an input pin; pin 1 of the voltage stabilization chip IC2 is a ground pin, pin 2 of the voltage stabilization chip IC2 is an output pin, and pin 3 of the voltage stabilization chip IC2 is an input pin.
The voltage stabilizing chip IC1 and the voltage stabilizing chip IC2 are DC-DC voltage reducing type voltage stabilizing chips, such as 78 series chips of voltage stabilizing power chips 7805, 7806, 7808, 7809, 7812, 7815, 7818, and the like.
Above-mentioned scheme replaces the transformer through using 2 steady voltage chips, can realize adopting single channel power input then to isolate 3 way power output and give the motor system power supply, and 3 way output power voltage's that steady voltage chip converted out precision is high, stability is high moreover, can satisfy the required multichannel power requirement of machine controller, and steady voltage chip protect function is perfect, can effectively improve power conversion circuit's reliable and stable nature to improve the job stabilization nature of motor.
A resistor R1 is connected between the pin 1 of the voltage stabilization chip IC1 and the pin 2 of the voltage stabilization chip IC2, and the resistor R1 has the function of generating short circuit when the voltage stabilization chip IC1 outputs the power supply + VEE, so that the normal work of the output power supply of the voltage stabilization chip IC2 cannot be influenced, and the working stability of the power supply conversion circuit can be further improved.
A diode D1 is connected between a pin No. 2 of the voltage stabilizing chip IC1 and a pin No. 1 of the voltage stabilizing chip IC1, the cathode of the diode D1 is connected with a pin No. 2 of the voltage stabilizing chip IC1, the anode of the diode D1 is connected with a pin No. 1 of the voltage stabilizing chip IC1, and the diode D1 is designed to prevent negative pressure from being input into the voltage stabilizing chip IC1 to cause damage to the voltage stabilizing chip IC1, so that the protection function of the power conversion circuit in the scheme is more complete, and the working stability of the power conversion circuit can be further improved.
An energy storage capacitor C1 is connected between an input direct-current power supply VCC and ground GND, one end of an energy storage capacitor C1 is respectively connected with a pin 3 of a voltage stabilizing chip IC1 and a voltage stabilizing chip IC2, the other end of the energy storage capacitor C1 is grounded GND, and an energy storage capacitor C1 provides a stable power supply for the voltage stabilizing chip IC1 and the voltage stabilizing chip IC2, so that the large fluctuation of the input direct-current power supply VCC is avoided, the high stability of the output power supply is ensured, and the voltage precision of the multi-path output power supply is further improved.
Example two:
as shown in fig. 3 and 4, the present embodiment provides a motor controller, which includes a power supply circuit, a microprocessor MCU and an inverter circuit, wherein the power supply circuit supplies power to the microprocessor MCU and the inverter circuit, and is characterized in that: the power supply circuit adopts the power conversion circuit 100 described in the first embodiment.
The power conversion circuit 100 includes a plurality of power conversion circuits 100, and the plurality of power conversion circuits 100 are connected in parallel. In the figure, only 2 are drawn, but the number is not limited to 2, and can be 3, 4 or 5 according to the requirement of a motor controller. The plurality of power conversion circuits means 2 or more than 2.
Through using 2 steady voltage chip to replace the transformer, can realize adopting single power input then to isolate 3 ways power output and give the motor system power supply, 3 ways output power voltage's that steady voltage chip converted out precision is high, stability is high moreover, can satisfy the required multichannel power requirement of machine controller, and steady voltage chip protect function is perfect, can effectively improve power supply switching circuit's reliable and stable nature to improve the job stabilization nature of motor.
The above embodiments are only preferred embodiments of the present invention, but the present invention is not limited thereto, and any other changes, modifications, substitutions, combinations, simplifications, which are made without departing from the spirit and principle of the present invention, are all equivalent replacements within the protection scope of the present invention.
Claims (7)
1. A power conversion circuit, characterized by: the power supply circuit comprises a voltage stabilizing chip IC1, a voltage stabilizing chip IC2, a capacitor C2, a capacitor C3 and a capacitor C4, wherein an input direct-current power supply VCC is respectively connected with a pin 3 of the voltage stabilizing chip IC1 and a pin 3 of the voltage stabilizing chip IC2, a pin 1 of the voltage stabilizing chip IC2 is connected with a ground GND, a pin 1 of the voltage stabilizing chip IC1 is connected to a pin 2 of the voltage stabilizing chip IC2, the capacitor C2 is connected between a pin 2 of the voltage stabilizing chip IC1 and a pin 2 of the voltage stabilizing chip IC2, the capacitor C3 is connected between the pin 1 of the voltage stabilizing chip IC2 and the pin 2 of the voltage stabilizing chip IC2, the capacitor C4 is connected between the pin 2 of the voltage stabilizing chip IC1 and the pin 1 of the voltage stabilizing chip IC2, a first output power supply + VSS is led out from two ends of the capacitor C2, a second output power supply-VSS is led out from two ends of the capacitor C3, and a third output power supply + VEE is led out from two ends of the capacitor C4.
2. A power conversion circuit according to claim 1, characterized in that: a resistor R1 is connected between pin 1 of the regulator chip IC1 and pin 2 of the regulator chip IC 2.
3. A power conversion circuit according to claim 1, characterized in that: a diode D1 is connected between pin No. 2 of the voltage stabilization chip IC1 and pin No. 1 of the voltage stabilization chip IC1, the cathode of the diode D1 is connected with pin No. 2 of the voltage stabilization chip IC1, and the anode of the diode D1 is connected with pin No. 1 of the voltage stabilization chip IC 1.
4. A power conversion circuit according to claim 1, 2 or 3, wherein: an energy storage capacitor C1 is connected between an input direct current power supply VCC and ground GND, one end of an energy storage capacitor C1 is respectively connected with a No. 3 pin of a voltage stabilizing chip IC1 and a voltage stabilizing chip IC2, the other end of the energy storage capacitor C1 is grounded GND, and an energy storage capacitor C1 provides a stable power supply for a voltage stabilizing chip IC1 and a voltage stabilizing chip IC 2.
5. The utility model provides a motor controller, includes power supply circuit, microprocessor MCU and inverter circuit, and power supply circuit is microprocessor MCU and inverter circuit power supply, its characterized in that: the power supply circuit employs the power conversion circuit (100) of any one of claims 1 to 4.
6. A motor controller according to claim 5, wherein: the power conversion circuits (100) are provided in plurality, and the plurality of power conversion circuits (100) are connected in parallel.
7. A motor controller according to claim 6, wherein: the plurality of power conversion circuits means 2 or more than 2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121454154.XU CN215734035U (en) | 2021-06-29 | 2021-06-29 | Power supply conversion circuit and motor controller |
| PCT/CN2021/115566 WO2023272922A1 (en) | 2021-06-29 | 2021-08-31 | Power conversion circuit and motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121454154.XU CN215734035U (en) | 2021-06-29 | 2021-06-29 | Power supply conversion circuit and motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215734035U true CN215734035U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121454154.XU Active CN215734035U (en) | 2021-06-29 | 2021-06-29 | Power supply conversion circuit and motor controller |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN215734035U (en) |
| WO (1) | WO2023272922A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206673848U (en) * | 2017-05-04 | 2017-11-24 | 深圳市马汀科技有限公司 | A kind of positive-negative power circuit arrangement |
| CN107786177B (en) * | 2017-11-03 | 2023-11-24 | 浙江嘉科电子有限公司 | C-band low-noise amplifier |
| CN110015205A (en) * | 2017-11-29 | 2019-07-16 | 广东合即得能源科技有限公司 | A kind of hydrogen fuel cell generator is the control method and system of electric car charging |
| CN108196157B (en) * | 2018-01-29 | 2023-07-18 | 昆明理工大学 | Parameter and fault detection device and method for current sensor module |
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2021
- 2021-06-29 CN CN202121454154.XU patent/CN215734035U/en active Active
- 2021-08-31 WO PCT/CN2021/115566 patent/WO2023272922A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2023272922A1 (en) | 2023-01-05 |
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