CN104289489A - High-pressure washer driving system and method based on brushless direct current motor - Google Patents
High-pressure washer driving system and method based on brushless direct current motor Download PDFInfo
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- CN104289489A CN104289489A CN201410363883.2A CN201410363883A CN104289489A CN 104289489 A CN104289489 A CN 104289489A CN 201410363883 A CN201410363883 A CN 201410363883A CN 104289489 A CN104289489 A CN 104289489A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/027—Pump details
Abstract
The invention discloses a high-pressure washer driving system and method based on a brushless direct current motor. The system comprises a power supply control module, an IPM driving module and the three-phase brushless direct current motor, wherein the power supply control module is used for being externally connected with an alternating current power supply and outputting direct voltage through EMI filtering, rectification and power factor compensation; the IPM driving module is used for controlling the rotating speed of the three-phase brushless direct current motor; the three-phase brushless direct current motor is used for outputting power to a high-pressure water pump; the power supply control module outputs and supplies the high direct voltage to the IPM driving module, the IPM driving module controls the three-phase brushless direct current motor to output the power to the high-pressure water pump, energy conversion efficiency of a high-pressure washer is improved, under limits of low input currents, high power output is achieved, energy consumption is effectively reduced, a free gear speed regulation function is achieved, the high-pressure washer outputs different types of pressure and flow values, and the system and method have good application prospects.
Description
Technical field
The present invention relates to a kind of jetting machine drive system based on brshless DC motor and method, belong to cleaning means technical field.
Background technology
Jetting machine as a kind of cleaning means purposes widely, can be used for cleaning automobile, ground, wall, roof etc.; Existing jetting machine cardinal principle drives a high-pressure hydraulic pump job by an alternating current generator, the running water of low-pressure is pressurized to the certain pressure of client's needs by high-pressure hydraulic pump, we know, the loss of alternating current generator is large, the power output of the alternating current generator of general power 1000W is 600W, efficiency is very low, wastes energy.North America market is owing to there being enforceable current limit (being not more than 15A) to household electrical appliance, cause the power of jetting machine cannot do greatly, the restriction that cleaning machine output pressure and flow are also subject to cannot be done greatly always; Therefore in limited input current, how to improve the system effectiveness of cleaning machine, be the emphasis studied in industry to obtain maximum power output always.
Summary of the invention
The object of the invention is to overcome existing jetting machine and adopt alternating current generator, inefficiency, wastes energy, and the rate of the jetting machine in the input current having restriction is low, the problem that output pressure and flow are also very restricted.Jetting machine drive system based on brshless DC motor of the present invention and method, improve the energy conversion efficiency of jetting machine, under the restriction of low input current, reach high power stage, effectively reduce energy loss, and realize free gear speed-regulating function, make pressure cleaning machine export different pressure and flow value, have a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is:
Based on a jetting machine drive system for brshless DC motor, it is characterized in that: comprise
Energy supply control module, for external AC power supply, and exports DC voltage after EMI filtering, rectification, power factor compensation;
IPM driver module, for controlling the rotating speed of three-phase brushless dc motor;
Three-phase brushless dc motor, for outputting power to high-pressure hydraulic pump;
Described energy supply control module exports high-voltage dc voltage supply IPM driver module, and described IPM driver module controls three-phase brushless dc motor outputting power to high-pressure hydraulic pump.
The aforesaid jetting machine drive system based on brshless DC motor, it is characterized in that: described energy supply control module comprises the EMI filter circuit connected successively, full bridge rectifier, pfc circuit, described EMI filter circuit external AC power supply, described pfc circuit comprises boost inductance L1, booster diode D1, FET T1, PFC control chip IC1, the positive output end of described full bridge rectifier is connected with one end of boost inductance L1, the other end of boost inductance L1 and the drain electrode of FET T1, the positive pole of booster diode D1 connects jointly, the described source electrode of FET T1 and the negative output terminal of full bridge rectifier, the grid of described FET T1 is connected with the feedback end of PFC control chip IC1, the negative pole of described booster diode D1 is also in series with resistance R1, R2, described resistance R1, R2 junction is connected with the input of PFC control chip IC1, the negative pole of described booster diode D1 is connected as the power input of energy supply control module positive input terminal with IPM driver module.
The aforesaid jetting machine drive system based on brshless DC motor, is characterized in that: described FET T1 is metal-oxide-semiconductor or technotron.
The aforesaid jetting machine drive system based on brshless DC motor, it is characterized in that: described IPM driver module comprises single-chip microcomputer IC2, IPM module, rotational speed regulation circuit, the output of described rotational speed regulation circuit is connected with the signal input part of single-chip microcomputer IC2, described IPM module comprises the Drive Protecting Circuit be connected, the three phase electric machine power driving circuit that six IGBT are formed, the drive singal output of described single-chip microcomputer IC2 is connected with the input point of Drive Protecting Circuit, the protection port of described Drive Protecting Circuit is connected with the protecting control signal input part of single-chip microcomputer IC2, described energy supply control module positive input terminal is connected with three phase electric machine power driving circuit power end, described three phase electric machine power driving circuit is provided with three road outputs, be connected with the three-phase input end of three-phase brushless dc motor respectively.
The aforesaid jetting machine drive system based on brshless DC motor, it is characterized in that: described three-phase brushless dc motor is provided with the first temperature sensor RT1, described IPM driver module also comprises the second temperature sensor RT2, and the output of described first temperature sensor RT1, the second temperature sensor RT2 is connected with single-chip microcomputer IC2.
The aforesaid jetting machine drive system based on brshless DC motor, is characterized in that: described rotational speed regulation circuit is digital encoder RP.
The aforesaid jetting machine drive system based on brshless DC motor, is characterized in that: the input of any two-phase of described three-phase brushless dc motor is provided with feedback resistance RP1, RP2, and is connected with the two-way current feedback terminal of single-chip microcomputer IC2 respectively.
The aforesaid jetting machine drive system based on brshless DC motor, it is characterized in that: be also provided with polarity filter capacitor C1 between the negative pole of described booster diode D1, the negative output terminal of full bridge rectifier, the positive pole of described property filter capacitor C1 is connected with the negative pole of booster diode D1.
The aforesaid jetting machine drive system based on brshless DC motor, is characterized in that: the DC voltage that described energy supply control module exports is 400V.
The aforesaid jetting machine drive system based on brshless DC motor, it is characterized in that: also comprise accessory power supply, described accessory power supply is connected to the input of full bridge rectifier, is AC-DC flyback step down switching regulator.
The aforesaid jetting machine drive system based on brshless DC motor, is characterized in that: the negative input end place of described EMI filter circuit external AC power supply is provided with sampling inductance L 2, and is connected with single-chip microcomputer IC2 by light emitting diode D2.
The aforesaid jetting machine drive system based on brshless DC motor, is characterized in that: the power factor of described pfc circuit is not less than 99%.
According to the driving method of the above-mentioned jetting machine drive system based on brshless DC motor, it is characterized in that: comprise the following steps,
Step (1), the output of adjusting rotary speed regulating circuit, given rotating speed is transformed to speed control signal VS and flows to speed input module in single-chip microcomputer IC2 by rotational speed regulation circuit;
Step (2), speed control signal VS is converted to input speed NI and flows to error sensing module in single-chip microcomputer IC2 by speed input module;
Step (3), error sensing module, the error delta N=NI-NO of input speed NI and current rotating speed NO, flows to the controling parameters generation module in single-chip microcomputer IC2;
Step (4), controling parameters generation module, according to error delta N, regulates algorithm by PID, calculates the frequency F of sine wave drive electric current, amplitude Am, and flow to the driving algoritic module in single-chip microcomputer IC2;
Step (5), drive algoritic module, according to frequency F, amplitude Am and the rotor current location θ of sine wave drive electric current, by 180 degree of sine wave drive position-sensor-free Brush-Less DC motor control algorithms, calculate the switching sequence Psi of each IGBT in IPM driver module, make-and-break time Tsi;
Step (6), according to switching sequence Psi, the make-and-break time Tsi of each IGBT, the turn-on sequence of each IGBT in control IPM driver module and time, the synthesis of IPM driver module exports three-phase sine-wave electric current and exports to three-phase brushless dc motor, drives three-phase brushless dc motor running;
Step (7), single-chip microcomputer IC2 detection three-phase brushless galvanic phase current IP1, IP2 flow to the rotor-position rotating speed computing module in single-chip microcomputer IC2, rotor-position rotating speed computing module is according to phase current IP1, IP2, calculate the rotor current location θ of three-phase brushless dc motor and current rotating speed NO, and rotor current location θ is flowed to driving algoritic module, current rotating speed NO flows to error sensing module, formation control closed loop;
Step (8), repeats step (4)-step (7), until error delta N=0, makes three-phase brushless dc motor current rotating speed NO identical with the rotating speed of input speed NI
The invention has the beneficial effects as follows: based on jetting machine drive system and the method for brshless DC motor, improve the energy conversion efficiency of jetting machine, under the restriction of low input current, reach high power stage, effectively reduce energy loss, and realize free gear speed-regulating function, make jetting machine export different pressure and flow value, have the following advantages
(1) by energy supply control module, IPM driver module, three-phase brushless motor, effectively improve power factor (PF), reduce electric network reactive-load loss, raise the efficiency, improve 20% relative to alternating current generator efficiency, effectively reduce energy loss;
(2) jetting machine can realize free gear speed-regulating function, makes user freely obtain different pressure and the requirement of flow value, stable output, easy to use.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the jetting machine drive system based on brshless DC motor of the present invention.
Fig. 2 is the circuit diagram of the jetting machine drive system based on brshless DC motor of the present invention.
Fig. 3 is the data flow figure of the jetting machine driving method based on brshless DC motor of the present invention.
Detailed description of the invention
Below in conjunction with Figure of description, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, a kind of jetting machine drive system based on brshless DC motor, comprises
Energy supply control module, for external AC power supply, and exports DC voltage after EMI filtering, rectification, power factor compensation;
IPM driver module, for controlling the rotating speed of three-phase brushless dc motor;
Three-phase brushless dc motor, for outputting power to high-pressure hydraulic pump;
Described energy supply control module exports high-voltage dc voltage supply IPM driver module, and described IPM driver module controls three-phase brushless dc motor outputting power to high-pressure hydraulic pump.
As shown in Figure 2, described energy supply control module comprises the EMI filter circuit connected successively, full bridge rectifier, pfc circuit, EMI filter circuit external AC power supply, pfc circuit comprises boost inductance L1, booster diode D1, FET T1, PFC control chip IC1, the positive output end of full bridge rectifier is connected with one end of boost inductance L1, the other end of boost inductance L1 and the drain electrode of FET T1, the positive pole of booster diode D1 connects jointly, the source electrode of FET T1 and the negative output terminal of full bridge rectifier, the grid of FET T1 is connected with the feedback end of PFC control chip IC1, the negative pole of booster diode D1 is also in series with resistance R1, R2, resistance R1, R2 junction is connected with the input of PFC control chip IC1, the negative pole of booster diode D1 is connected as the power input of energy supply control module positive input terminal with IPM driver module, here FET T1 is metal-oxide-semiconductor or technotron.
Described IPM driver module comprises single-chip microcomputer IC2, IPM module, rotational speed regulation circuit, the output of rotational speed regulation circuit is connected with the signal input part of single-chip microcomputer IC2, IPM module comprises the Drive Protecting Circuit be connected, the three phase electric machine power driving circuit that six IGBT are formed, the drive singal output of single-chip microcomputer IC2 is connected with the input point of Drive Protecting Circuit, the protection port of Drive Protecting Circuit is connected with the protecting control signal input part of single-chip microcomputer IC2, energy supply control module positive input terminal is connected with three phase electric machine power driving circuit power end, three phase electric machine power driving circuit is provided with three road outputs, be connected with the three-phase input end of three-phase brushless dc motor respectively.
Described three-phase brushless dc motor is provided with the first temperature sensor RT1; described IPM driver module also comprises the second temperature sensor RT2; the output of the first temperature sensor RT1, the second temperature sensor RT2 is connected with single-chip microcomputer IC2; single-chip microcomputer IC2 detects the temperature sensor RT2 of IPM driver module, the temperature sensor RT1 of three-phase brushless dc motor exports temperature signal VRT2, VRT1; if arbitrary temperature signal exceedes predetermined value; then stop three-phase brushless dc motor running, protection IPM driver module and three-phase brushless dc motor.
Described rotational speed regulation circuit is digital encoder RP, exports the rotational speed regulation needed for data signal VS.
The input of any two-phase of described three-phase brushless dc motor is provided with feedback resistance RP1, RP2, and is connected with the two-way current feedback terminal of single-chip microcomputer IC2 respectively.
Also be provided with polarity filter capacitor C1 between the negative pole of described booster diode D1, the negative output terminal of full bridge rectifier, the positive pole of described property filter capacitor C1 is connected with the negative pole of booster diode D1.
The DC voltage that described energy supply control module exports is 400V.
Also comprise accessory power supply, described accessory power supply is connected to the input of full bridge rectifier, is AC-DC flyback step down switching regulator, input ac power is converted to low-voltage dc power supply VCC and VDD, for use of powering.
The negative input end place of described EMI filter circuit external AC power supply is provided with sampling inductance L 2, and is connected with single-chip microcomputer IC2 by light emitting diode D2.
The power factor of described pfc circuit is not less than 99%.
According to the driving method of the above-mentioned jetting machine drive system based on brshless DC motor, comprise the following steps,
Step (1), the output of adjusting rotary speed regulating circuit, given rotating speed is transformed to speed control signal VS and flows to speed input module in single-chip microcomputer IC2 by rotational speed regulation circuit;
Step (2), speed control signal VS is converted to input speed NI and flows to error sensing module in single-chip microcomputer IC2 by speed input module;
Step (3), error sensing module, the error delta N=NI-NO of input speed NI and current rotating speed NO, flows to the controling parameters generation module in single-chip microcomputer IC2;
Step (4), controling parameters generation module, according to error delta N, regulates algorithm by PID, calculates the frequency F of sine wave drive electric current, amplitude Am, and flow to the driving algoritic module in single-chip microcomputer IC2;
Step (5), drive algoritic module, according to the frequency F of sine wave drive electric current, amplitude Am and rotor current location θ, by 180 degree of sine wave drive position-sensor-free Brush-Less DC motor control algorithms, calculate the switching sequence Psi of each IGBT in IPM driver module, make-and-break time Tsi, here 180 degree of sine wave drive position-sensor-free Brush-Less DC motor control algorithms are widely applied in convertible frequency air-conditioner technology, here be applied in jetting machine actuation techniques field, solve the switching sequence Psi calculating each IGBT in IPM driver module, make-and-break time Tsi, convenient and swift, precision is high,
Step (6), according to switching sequence Psi, the make-and-break time Tsi of each IGBT, the turn-on sequence of each IGBT in control IPM driver module and time, the synthesis of IPM driver module exports three-phase sine-wave electric current and exports to three-phase brushless dc motor, drives three-phase brushless dc motor running;
Step (7), single-chip microcomputer IC2 detection three-phase brushless galvanic phase current IP1, IP2 flow to the rotor-position rotating speed computing module in single-chip microcomputer IC2, rotor-position rotating speed computing module is according to phase current IP1, IP2, calculate the rotor current location θ of three-phase brushless dc motor and current rotating speed NO, and rotor current location θ is flowed to driving algoritic module, current rotating speed NO flows to error sensing module, formation control closed loop;
Step (8), repeats step (4)-step (7), until error delta N=0, makes three-phase brushless dc motor current rotating speed NO identical with the rotating speed of input speed NI.
Described in summary, jetting machine drive system based on brshless DC motor of the present invention and method, the energy conversion efficiency of jetting machine can be improved, under the restriction of low input current, reach high power stage, effectively reduce energy loss, and realize free gear speed-regulating function, make jetting machine export different pressure and flow value, have the following advantages
(1) by energy supply control module, IPM driver module, three-phase brushless motor, effectively improve power factor (PF), reduce electric network reactive-load loss, raise the efficiency, improve 20% relative to alternating current generator efficiency, effectively reduce energy loss;
(2) jetting machine can realize free gear speed-regulating function, makes user freely obtain different pressure and the requirement of flow value, stable output, easy to use.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (13)
1., based on the jetting machine drive system of brshless DC motor, it is characterized in that: comprise
Energy supply control module, for external AC power supply, and exports DC voltage after EMI filtering, rectification, power factor compensation;
IPM driver module, for controlling the rotating speed of three-phase brushless dc motor;
Three-phase brushless dc motor, for outputting power to high-pressure hydraulic pump;
Described energy supply control module exports high-voltage dc voltage supply IPM driver module, and described IPM driver module controls three-phase brushless dc motor outputting power to high-pressure hydraulic pump.
2. the jetting machine drive system based on brshless DC motor according to claim 1, it is characterized in that: described energy supply control module comprises the EMI filter circuit connected successively, full bridge rectifier, pfc circuit, described EMI filter circuit external AC power supply, described pfc circuit comprises boost inductance L1, booster diode D1, FET T1, PFC control chip IC1, the positive output end of described full bridge rectifier is connected with one end of boost inductance L1, the other end of boost inductance L1 and the drain electrode of FET T1, the positive pole of booster diode D1 connects jointly, the described source electrode of FET T1 and the negative output terminal of full bridge rectifier, the grid of described FET T1 is connected with the feedback end of PFC control chip IC1, the negative pole of described booster diode D1 is also in series with resistance R1, R2, described resistance R1, R2 junction is connected with the input of PFC control chip IC1, the negative pole of described booster diode D1 is connected as the power input of energy supply control module positive input terminal with IPM driver module.
3. the jetting machine drive system based on brshless DC motor according to claim 2, is characterized in that: described FET T1 is metal-oxide-semiconductor or technotron.
4. the jetting machine drive system based on brshless DC motor according to claim 1, it is characterized in that: described IPM driver module comprises single-chip microcomputer IC2, IPM module, rotational speed regulation circuit, the output of described rotational speed regulation circuit is connected with the signal input part of single-chip microcomputer IC2, described IPM module comprises the Drive Protecting Circuit be connected, the three phase electric machine power driving circuit that six IGBT are formed, the drive singal output of described single-chip microcomputer IC2 is connected with the input point of Drive Protecting Circuit, the protection port of described Drive Protecting Circuit is connected with the protecting control signal input part of single-chip microcomputer IC2, described energy supply control module positive input terminal is connected with three phase electric machine power driving circuit power end, described three phase electric machine power driving circuit is provided with three road outputs, be connected with the three-phase input end of three-phase brushless dc motor respectively.
5. the jetting machine drive system based on brshless DC motor according to claim 1 or 4, it is characterized in that: described three-phase brushless dc motor is provided with the first temperature sensor RT1, described IPM driver module also comprises the second temperature sensor RT2, and the output of described first temperature sensor RT1, the second temperature sensor RT2 is connected with single-chip microcomputer IC2.
6. the jetting machine drive system based on brshless DC motor according to claim 1 or 4, is characterized in that: described rotational speed regulation circuit is digital encoder RP.
7. the jetting machine drive system based on brshless DC motor according to claim 1, it is characterized in that: the input of any two-phase of described three-phase brushless dc motor is provided with feedback resistance RP1, RP2, and be connected with the two-way current feedback terminal of single-chip microcomputer IC2 respectively.
8. the jetting machine drive system based on brshless DC motor according to claim 1, it is characterized in that: be also provided with polarity filter capacitor C1 between the negative pole of described booster diode D1, the negative output terminal of full bridge rectifier, the positive pole of described property filter capacitor C1 is connected with the negative pole of booster diode D1.
9. the jetting machine drive system based on brshless DC motor according to claim 1, is characterized in that: the DC voltage that described energy supply control module exports is 400V.
10. the jetting machine drive system based on brshless DC motor according to claim 1, it is characterized in that: also comprise accessory power supply, described accessory power supply is connected to the input of full bridge rectifier, is AC-DC flyback step down switching regulator.
The 11. jetting machine drive systems based on brshless DC motor according to claim 1, it is characterized in that: the negative input end place of described EMI filter circuit external AC power supply is provided with sampling inductance L 2, and is connected with single-chip microcomputer IC2 by light emitting diode D2.
The 12. jetting machine drive systems based on brshless DC motor according to claim 1, is characterized in that: the power factor of described pfc circuit is not less than 99%.
13., based on the driving method of the jetting machine drive system based on brshless DC motor according to claim 1, is characterized in that: comprise the following steps,
Step (1), the output of adjusting rotary speed regulating circuit, given rotating speed is transformed to speed control signal VS and flows to speed input module in single-chip microcomputer IC2 by rotational speed regulation circuit;
Step (2), speed control signal VS is converted to input speed NI and flows to error sensing module in single-chip microcomputer IC2 by speed input module;
Step (3), error sensing module, the error delta N=NI-NO of input speed NI and current rotating speed NO, flows to the controling parameters generation module in single-chip microcomputer IC2;
Step (4), controling parameters generation module, according to error delta N, regulates algorithm by PID, calculates the frequency F of sine wave drive electric current, amplitude Am, and flow to the driving algoritic module in single-chip microcomputer IC2;
Step (5), drive algoritic module, according to frequency F, amplitude Am and the rotor current location θ of sine wave drive electric current, by 180 degree of sine wave drive position-sensor-free Brush-Less DC motor control algorithms, calculate the switching sequence Psi of each IGBT in IPM driver module, make-and-break time Tsi;
Step (6), according to switching sequence Psi, the make-and-break time Tsi of each IGBT, the turn-on sequence of each IGBT in control IPM driver module and time, the synthesis of IPM driver module exports three-phase sine-wave electric current and exports to three-phase brushless dc motor, drives three-phase brushless dc motor running;
Step (7), single-chip microcomputer IC2 detection three-phase brushless galvanic phase current IP1, IP2 flow to the rotor-position rotating speed computing module in single-chip microcomputer IC2, rotor-position rotating speed computing module is according to phase current IP1, IP2, calculate the rotor current location θ of three-phase brushless dc motor and current rotating speed NO, and rotor current location θ is flowed to driving algoritic module, current rotating speed NO flows to error sensing module, formation control closed loop;
Step (8), repeats step (4)-step (7), until error delta N=0, makes three-phase brushless dc motor current rotating speed NO identical with the rotating speed of input speed NI.
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