CN211908676U - Power supply circuit with voltage-multiplying output function and motor controller applied by same - Google Patents
Power supply circuit with voltage-multiplying output function and motor controller applied by same Download PDFInfo
- Publication number
- CN211908676U CN211908676U CN202020793564.6U CN202020793564U CN211908676U CN 211908676 U CN211908676 U CN 211908676U CN 202020793564 U CN202020793564 U CN 202020793564U CN 211908676 U CN211908676 U CN 211908676U
- Authority
- CN
- China
- Prior art keywords
- voltage
- circuit
- doubling
- input
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a power supply circuit with voltage doubling output function and motor controller who uses thereof, including full wave rectifier circuit, voltage doubling circuit and AC input voltage detection circuit, voltage doubling circuit includes voltage doubling change over switch K1, resistance and electric capacity, and voltage doubling circuit's input is connected with full wave rectifier circuit's 2 nd output pin and 4 th output pin, through opening or closing of voltage doubling change over switch K1, realizes single DC output voltage and double DC output voltage; the alternating current input voltage detection circuit comprises a rectification voltage division circuit and a microprocessor, wherein the input end of the rectification voltage division circuit is electrically connected with a contact C of the voltage-multiplying change-over switch K1 so as to detect the opening or closing of the voltage-multiplying change-over switch K1; the output end of the rectification voltage division circuit is connected with the input end of the microprocessor, the alternating current input voltage of the voltage doubling circuit can be accurately detected, the microprocessor selects one operation parameter to control the motor to operate according to the alternating current input voltage and the working state of the voltage doubling circuit, and the motor voltage doubling circuit is high in applicability and accurate in control.
Description
The technical field is as follows:
the utility model relates to a power supply circuit with voltage doubling output function and machine controller who uses thereof.
Background art:
at present, the alternating current commercial power supply voltage in the American market is 115VAC and 230VAC, a general BLDC motor (namely a brushless direct current permanent magnet synchronous motor) or an ECM motor (an electronic commutation motor) is provided with a motor controller, a power supply circuit, a microprocessor, an IGBT inverter circuit and an interface circuit are arranged in the motor controller, and the microprocessor is connected and communicated with a control system of a client by utilizing the interface circuit.
At present, in order to meet the requirements of customers, a power supply circuit is provided with a voltage doubling circuit, so that a single-voltage direct current output and a double-voltage direct current output can be obtained, for example: when the power supply voltage of the alternating current commercial power has 115VAC, single-voltage direct current output is obtained after rectification and voltage stabilization: i.e., 163VDC output, a double voltage dc output can be obtained when the voltage doubling circuit is activated: an output of 325 VDC; when the alternating current commercial power supply voltage has 230VAC, single-voltage direct current output is obtained after rectification and voltage stabilization: i.e., 325VDC output, a double voltage dc output can be obtained when the voltage doubling circuit is activated: i.e., 650VDC output.
The microprocessor in the motor controller needs to know the ac mains supply voltage in order to select appropriate control parameters to control the operation of the motor, and therefore, an ac voltage detection circuit is generally required to know the ac mains supply voltage and then transmit information to the microprocessor.
As shown in fig. 1, the existing ac voltage detection circuits detect a stable dc voltage obtained by half-wave rectification or full-wave rectification, and then perform sampling by a voltage-dividing resistor and input to a microprocessor MCU for detection and conversion to determine the voltage value of the input ac. However, this detection method is only suitable for single voltage output, and is not suitable for voltage doubling circuits, because the dc voltage value obtained by the low ac voltage passing through the voltage doubling circuit is equal to the dc voltage value obtained by the high ac voltage; such as: the input ac voltage is 230V, the rectified dc voltage is 325V, the input ac voltage is 115V, and the rectified dc voltage is 325V, and therefore, whether the input voltage is 115VAC or 230VAC cannot be accurately detected.
The voltage of the direct current bus can be reduced along with the increase of the output power, so that the voltage value of alternating current input cannot be detected in real time, the voltage of the direct current bus fluctuates along with the change of the power supply frequency, and if the average value of the DC voltage is obtained by using a common filtering mode, the input value of the AC voltage cannot be accurately obtained, so that a motor microprocessor cannot properly call motor operation parameters.
The invention content is as follows:
the utility model aims at providing a power supply circuit with voltage doubling output function and machine controller who uses thereof mainly solves among the prior art under the condition that voltage doubling circuit starts, and microprocessor can't accurate detection exchanges input's voltage value, leads to the unable appropriate technical problem who calls motor operation parameter of motor microprocessor.
The purpose of the utility model is realized through the following technical scheme:
power supply circuit with voltage-multiplying output function, its characterized in that: it includes:
a full-wave rectifier circuit, the 1 st input pin and the 3 rd input pin of which are respectively connected with two AC input ends ACL and ACN so as to convert the AC input voltage into DC output voltage;
the voltage doubling circuit comprises a voltage doubling change-over switch K1, a plurality of resistors and a plurality of capacitors, wherein the input end of the voltage doubling circuit is connected with the No. 2 output pin and the No. 4 output pin of the full-wave rectification circuit, and single direct-current output voltage and double direct-current output voltage are realized by opening or closing the voltage doubling change-over switch K1;
an AC input voltage detection circuit, wherein the AC input voltage detection circuit comprises a rectification voltage division circuit and a microprocessor, one contact C of a voltage doubling selector switch K1 is connected with the 3 rd input pin of the full-wave rectification circuit, and the input end of the rectification voltage division circuit is electrically connected with the contact C of a voltage doubling selector switch K1 so as to detect the opening or closing of the voltage doubling selector switch K1; the output end of the rectification voltage division circuit is connected with the input end of the microprocessor.
The voltage doubling circuit comprises a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2 and a voltage doubling change-over switch K1, wherein two ends of the first resistor R1 and the second resistor R2 are connected in series and then are respectively connected to a 2 nd output pin and a 4 th output pin of the full-wave rectification circuit, and two ends of the first capacitor C1 and the second capacitor C2 are respectively connected to a 2 nd output pin and a 4 th output pin of the full-wave rectification circuit after being connected in series; the point a between the first capacitor C1 and the second capacitor C2 is connected to the other contact D of the voltage-doubling switch K1.
The rectifying voltage-dividing circuit comprises a rectifying diode D1 and a plurality of voltage-dividing resistors which are connected in series, the input end of the rectifying voltage-dividing circuit is electrically connected with a contact C of a voltage-multiplying switch K1, the other end of the rectifying voltage-dividing circuit is connected with a grounding end GND, a signal output end B is led out from between two of the voltage-dividing resistors, and the signal output end B is connected with the input end of the microprocessor.
The voltage dividing resistors comprise a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, and the signal output end B is led out from the space between the third resistor R3 and the fourth resistor R4.
The utility model provides a motor controller, includes power supply circuit, IGBT inverter circuit, its characterized in that: the power supply circuit is the power supply circuit with the voltage-multiplying output function.
Compared with the prior art, the utility model following beneficial effect has:
1. the utility model discloses a full wave rectifier circuit, voltage doubling circuit and AC input voltage detection circuitry, voltage doubling circuit include voltage doubling change over switch K1, a plurality of resistance and a plurality of electric capacity, and voltage doubling circuit's input is connected with full wave rectifier circuit's 2 nd output pin and 4 th output pin, through opening or closing of voltage doubling change over switch K1, realizes single DC output voltage and double DC output voltage; the alternating current input voltage detection circuit comprises a rectification voltage division circuit and a microprocessor, one contact C of the voltage doubling selector switch K1 is connected with the No. 3 input pin of the full-wave rectification circuit, and the input end of the rectification voltage division circuit is electrically connected with the contact C of the voltage doubling selector switch K1 so as to detect the opening or closing of the voltage doubling selector switch K1; the output end of the rectification voltage division circuit is connected with the input end of the microprocessor, the alternating current input voltage of the voltage doubling circuit can be accurately detected, the microprocessor selects one operation parameter to control the motor to operate according to the alternating current input voltage and the working state of the voltage doubling circuit, and the motor voltage doubling circuit is high in applicability and accurate in control.
2. Other advantages of the present invention are described in more detail in the specification.
Description of the drawings:
FIG. 1 is a schematic circuit diagram of a prior art power supply circuit with voltage doubling output;
fig. 2 is a schematic circuit diagram of the power supply circuit with voltage-doubling output function of the present invention;
fig. 3 is a schematic flow diagram of the present invention;
fig. 4 is a waveform diagram of the signal output terminal B when the voltage-doubling changeover switch K1 of the present invention is turned off;
fig. 5 is a waveform diagram of the signal output terminal B when the voltage-doubling changeover switch K1 of the present invention is closed;
fig. 6 is a block schematic diagram of a 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. 2, the utility model relates to a power supply circuit with voltage-multiplying output function, its characterized in that: it includes:
a full-wave rectifier circuit, the 1 st input pin and the 3 rd input pin of which are respectively connected with two AC input ends ACL and ACN so as to convert the AC input voltage into DC output voltage;
the voltage doubling circuit comprises a voltage doubling change-over switch K1, a plurality of resistors and a plurality of capacitors, wherein the input end of the voltage doubling circuit is connected with the No. 2 output pin and the No. 4 output pin of the full-wave rectification circuit, and single direct-current output voltage and double direct-current output voltage are realized by opening or closing the voltage doubling change-over switch K1;
an AC input voltage detection circuit, wherein the AC input voltage detection circuit comprises a rectification voltage division circuit and a microprocessor, one contact C of a voltage doubling selector switch K1 is connected with the 3 rd input pin of the full-wave rectification circuit, and the input end of the rectification voltage division circuit is electrically connected with the contact C of a voltage doubling selector switch K1 so as to detect the opening or closing of the voltage doubling selector switch K1; the signal output end B of the rectification voltage division circuit is connected with the input end of the microprocessor;
as shown in fig. 4, when the voltage-doubling switch K1 is turned off, the waveform of the signal output terminal B follows the waveform of the ac input terminal ACN, forming a waveform with a large amplitude; as shown in fig. 5, when the voltage doubling changeover switch K1 is closed, the waveform of the signal output terminal B follows the waveform of the point a, forming a waveform with a smaller amplitude; therefore, the microprocessor can judge whether double direct current voltage output is used or not according to different detected waveforms, and simultaneously detects the value of a point B of the signal output end, so that the input alternating current voltage value is calculated proportionally, the alternating current input voltage of the voltage doubling circuit can be accurately detected, the microprocessor selects one operation parameter to control the motor to operate according to the alternating current input voltage and the working state of the voltage doubling circuit, and the applicability is high.
The voltage doubling circuit comprises a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2 and a voltage doubling change-over switch K1, wherein two ends of the first resistor R1 and the second resistor R2 are connected in series and then are respectively connected to a 2 nd output pin and a 4 th output pin of the full-wave rectification circuit, and two ends of the first capacitor C1 and the second capacitor C2 are respectively connected to a 2 nd output pin and a 4 th output pin of the full-wave rectification circuit after being connected in series; the point a between the first capacitor C1 and the second capacitor C2 is connected to the other contact D of the voltage-doubling switch K1.
The rectifying voltage-dividing circuit comprises a rectifying diode D1 and a plurality of voltage-dividing resistors which are connected in series, the input end of the rectifying voltage-dividing circuit is electrically connected with a contact C of a voltage-multiplying switch K1, the other end of the rectifying voltage-dividing circuit is connected with a grounding end GND, a signal output end B is led out from between two of the voltage-dividing resistors, and the signal output end B is connected with the input end of the microprocessor. The circuit structure is simple, practical and convenient.
The voltage dividing resistors comprise a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, and the signal output end B is led out from the space between the third resistor R3 and the fourth resistor R4.
The voltage value of the signal output end B is read once every time period T1 to be sampled, N times of continuous reading are performed, where N is an integer, the sampled data of N times are sorted, the voltage values of the maximum two times are averaged to be used as the peak value of the ac input voltage, and then the peak value is converted into the ac input voltage value.
For example, the voltage value is sampled every 500us, N times are continuously read, as shown in fig. 3, for example, N is 38 times, the time covers the period of the ac power supply, the 38 times of sampled data are sorted, the maximum two times of voltage value average Vav is (V [ ] max + V [ ] max1)/2, V [ ] max and V [ ] max1 are the maximum value and the sub-maximum value after array sorting, and are used as the peak value of the ac input voltage, and then converted into the actual value of the ac input voltage, as shown in the flowchart of fig. 3, the specific conversion is calculated according to the state of the voltage doubling switch K1, and the calculated ac input voltage value is definitely deviated from the actual input value by using a common conversion formula, but the deviation is acceptable within a certain range, for example, 20%. Thus, the detection accuracy is high.
The period of the ac input voltage is T0, and then N periods T1 cover the period of the ac input power. For example, if the ac input voltage is 115VAC and the frequency thereof is 50HZ, one waveform period T0 is 0.02s (sec), the voltage value is sampled every 500us in one period, and N is set to 38 times, which can substantially cover the period of the ac input power source.
When the voltage-multiplying change-over switch K1 is switched off, the waveform of the signal output end B follows the waveform of the AC input end ACN to form a waveform with larger amplitude; when the voltage doubling change-over switch K1 is closed, the waveform of the signal output end B follows the waveform of the point A to form a waveform with smaller amplitude; therefore, the microprocessor can judge whether double direct current voltage output is used or not according to different detected waveforms, and simultaneously detect the value of a point B of the signal output end, so that the input alternating current voltage value is calculated proportionally, the alternating current input voltage of the voltage doubling circuit can be accurately detected, the microprocessor selects one operation parameter to control the motor to operate according to the alternating current input voltage and the working state of the voltage doubling circuit, and the motor control method is high in applicability and accurate in control.
Example two:
as shown in fig. 6, a BLDC motor includes a motor body and a motor controller: the motor body comprises a motor shell, a stator assembly and a rotor assembly;
the motor controller comprises a control circuit board, wherein the control circuit board comprises a rectifying circuit, a voltage doubling circuit, a rectifying and voltage dividing circuit, a microprocessor, an IGBT (insulated gate bipolar transistor) inverter circuit, a rotor position detection unit and a multi-gear control interface module; the rotor position detection unit sends rotor position information to the microprocessor, the microprocessor outputs signals to control the IGBT inverter circuit to work, the output end of the GBT inverter circuit is electrically connected with a coil winding of the stator, the storage stores various operating parameters which respectively correspond to various different alternating current input voltages and the working states of the voltage doubling circuit, the microprocessor selects one operating parameter to control the motor to operate according to the alternating current input voltages and the working states of the voltage doubling circuit, and the normal operation of the motor can be ensured through the power supply circuit with the voltage doubling output function.
The power supply circuit with the voltage-multiplying output function in the first embodiment is composed of a rectifying circuit, a voltage-multiplying circuit, a rectifying voltage-dividing circuit and a microprocessor.
Examples are: assuming that the memory stores a plurality of operating parameters corresponding to a plurality of different ac input voltages and operating states of the voltage doubling circuit, as shown in table 1, the multi-gear control interface module is connected with 5 gears, which are N1, N2, N3, N4 and N5, wherein only one gear is selected, the selected gear is input to the microprocessor through the multi-gear control interface module, and the microprocessor selects one operating parameter of the motor to control the operation of the motor according to the selected gear, the ac input voltage and the operating state of the voltage doubling circuit.
TABLE 1
When the K1 is disconnected, the AC input voltage is 115VAC, and the input gear N3 is effective, the microprocessor calls the data in the table 1 in the memory, and the rotating speed is selected to be 700RPM, namely 700 revolutions per minute to control the motor to operate; when the K1 is closed, the AC input voltage is 230VAC, and the input gear N5 is valid, the microprocessor calls the data in the table 1 in the memory, and selects the rotating speed of 1500RPM, namely 1500RPM to control the motor to operate.
Of course, the operation parameter stored in the memory may be a rotation speed parameter, a torque parameter or an air volume parameter. The utility model discloses a microprocessor can judge whether have the double DC voltage output of use according to detecting different wave forms, detects out the value of signal output part B point simultaneously to calculate the input AC voltage value according to the proportion, can accurately detect the AC input voltage of voltage doubling circuit, microprocessor selects an operation parameter control motor operation according to the operating condition of AC input voltage and voltage doubling circuit, and the suitability is strong, and control is accurate.
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 (5)
1. Power supply circuit with voltage-multiplying output function, its characterized in that: it includes:
a full-wave rectifier circuit, the 1 st input pin and the 3 rd input pin of which are respectively connected with two AC input ends ACL and ACN so as to convert the AC input voltage into DC output voltage;
the voltage doubling circuit comprises a voltage doubling change-over switch K1, a plurality of resistors and a plurality of capacitors, wherein the input end of the voltage doubling circuit is connected with the No. 2 output pin and the No. 4 output pin of the full-wave rectification circuit, and single direct-current output voltage and double direct-current output voltage are realized by opening or closing the voltage doubling change-over switch K1;
an AC input voltage detection circuit, wherein the AC input voltage detection circuit comprises a rectification voltage division circuit and a microprocessor, one contact C of a voltage doubling selector switch K1 is connected with the 3 rd input pin of the full-wave rectification circuit, and the input end of the rectification voltage division circuit is electrically connected with the contact C of a voltage doubling selector switch K1 so as to detect the opening or closing of the voltage doubling selector switch K1; the output end of the rectification voltage division circuit is connected with the input end of the microprocessor.
2. A power supply circuit with voltage-doubling output function according to claim 1, characterized in that: the voltage doubling circuit comprises a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2 and a voltage doubling change-over switch K1, wherein two ends of the first resistor R1 and the second resistor R2 are connected in series and then are respectively connected to a 2 nd output pin and a 4 th output pin of the full-wave rectification circuit, and two ends of the first capacitor C1 and the second capacitor C2 are respectively connected to a 2 nd output pin and a 4 th output pin of the full-wave rectification circuit after being connected in series; the point a between the first capacitor C1 and the second capacitor C2 is connected to the other contact D of the voltage-doubling switch K1.
3. A power supply circuit with voltage-doubling output function according to claim 1 or 2, characterized in that: the rectification bleeder circuit comprises a rectification diode D1 and a plurality of bleeder resistors which are connected in series, the input end of the rectification bleeder circuit is electrically connected with a contact C of a voltage-multiplying switch K1, the other end of the rectification bleeder circuit is connected with a grounding end GND, a signal output end B is led out from between the two bleeder resistors, and the signal output end B is connected with the input end of the microprocessor.
4. A power supply circuit with voltage-doubling output function according to claim 3, characterized in that: the plurality of voltage division resistors comprise a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, and a signal output end B is led out from the space between the third resistor R3 and the fourth resistor R4.
5. The utility model provides a motor controller, includes power supply circuit, IGBT inverter circuit, its characterized in that: the power supply circuit with voltage-multiplying output function is as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020793564.6U CN211908676U (en) | 2020-05-14 | 2020-05-14 | Power supply circuit with voltage-multiplying output function and motor controller applied by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020793564.6U CN211908676U (en) | 2020-05-14 | 2020-05-14 | Power supply circuit with voltage-multiplying output function and motor controller applied by same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211908676U true CN211908676U (en) | 2020-11-10 |
Family
ID=73271256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020793564.6U Active CN211908676U (en) | 2020-05-14 | 2020-05-14 | Power supply circuit with voltage-multiplying output function and motor controller applied by same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211908676U (en) |
-
2020
- 2020-05-14 CN CN202020793564.6U patent/CN211908676U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111416538A (en) | Power supply circuit with voltage-multiplying output function, motor controller and motor control method | |
| US7170261B2 (en) | Generator with dual cycloconverter for 120/240 VAC operation | |
| US6396225B1 (en) | DC current brushless motor driving apparatus and air conditioner with using thereof | |
| US6534938B1 (en) | Method and apparatus for driving a sensorless BLDC motor at PWM operation mode | |
| CN107834917B (en) | Back electromotive force phase change point detection circuit and method of direct current brushless motor | |
| US8022652B2 (en) | Method for controlling a mechanically communicated electric motor | |
| CN104040873B (en) | Motor drive device and refrigerator utilizing same | |
| RU2614531C2 (en) | Controller of synchronous ac motor with divided phase | |
| EA019602B1 (en) | Insulated gate bipolar transistor/field effect transistor based energy saving device, system and method | |
| GB2515086A (en) | Method of controlling of a brushless permanent-magnet motor | |
| CN202634345U (en) | ECM motor controller capable of adapting to different frequencies and different supply voltages | |
| JP2000513198A (en) | Method and apparatus for commutating an electric motor | |
| CN109660158B (en) | Motor constant speed control circuit and method | |
| CN211908676U (en) | Power supply circuit with voltage-multiplying output function and motor controller applied by same | |
| CN101711452B (en) | System for controlling the steady-state rotation of a synchronous electric motor | |
| CN108448956B (en) | Rotor position detection device of six-phase asymmetric square wave motor | |
| CN100435478C (en) | Synchronous detection circuit for frequency changing air conditioner digital voltage lifting PFC circuit | |
| US20070138994A1 (en) | AC fan motor driving circuit having detecting current wave capability | |
| JP2001008456A (en) | Automatic voltage conversion device | |
| CN103219934A (en) | Optimum phase position fine adjustment method of driving voltages of direct current brushless motor and motor | |
| CN112398384B (en) | Control device for direct current motor | |
| CN112855599A (en) | Fan speed regulation control system and method and fan | |
| CN111585479A (en) | Three-phase sensorless brushless direct current motor control system | |
| CN212210877U (en) | AC brushless electric tool | |
| CN112436760A (en) | Motor control device, method and system, household appliance and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |