CN117748926A - 3000w industrial power supply - Google Patents

Abstract

The application discloses 3000w industrial power supply, which comprises a power factor correction module, a phase-shifting full-bridge control module, a driving isolation module, a PWM output module and a control module, wherein the power factor correction module, the phase-shifting full-bridge control module, the driving isolation module, the PWM output module and the control module are connected with a power supply input end of the phase-shifting full-bridge control module, a power supply output end of the phase-shifting full-bridge control module is connected with a power supply input end of the driving isolation module, a power supply is output to a load by the power supply output end of the driving isolation module for supplying power, a signal output end of the control module is connected with a signal input end of the PWM output module, and a signal output end of the PWM output module is connected with a signal input end of the driving isolation module; the power factor correction module optimizes the waveform of the input power supply to improve the power factor; the phase-shifting full-bridge control module improves the stability and efficiency of power output through accurate phase control; the drive isolation module realizes electric isolation, effectively reduces electric shock and electric shock risks, and improves the safety of the system.

Description

3000w industrial power supply

Technical Field

The application relates to the field of driving power supply circuits, in particular to a 3000w industrial power supply.

Background

The conventional household garbage treatment equipment is often required to be equipped with a high-power high-voltage driving power supply so as to output high-voltage pulses and supply power for the equipment, so that the positive electrode high voltage is output to break up dust after garbage incineration, but the high-power high-voltage driving power supply is low in stability and safety, for example, the high-voltage driving power supply is required to be changed in rapid voltage and current, electromagnetic interference is caused due to high-frequency switch operation, and when the high-voltage power supply is used, electric shock and electric shock risks exist, so that the stability and safety of the system are reduced.

Disclosure of Invention

In order to solve the problems of low stability and safety of a driving power supply which is high in power and needs high-voltage driving, the application provides a 3000w industrial power supply.

The application provides a 3000w industrial power supply adopts following technical scheme:

the 3000w industrial power supply comprises a power factor correction module, a phase-shifting full-bridge control module, a driving isolation module, a PWM output module and a control module which are connected with a power grid, wherein the power output end of the power factor correction module is connected with the power input end of the phase-shifting full-bridge control module, the power output end of the phase-shifting full-bridge control module is connected with the power input end of the driving isolation module, the power output end of the driving isolation module outputs power to a load for supplying power, the signal output end of the control module is connected with the signal input end of the PWM output module, and the signal output end of the PWM output module is connected with the signal input end of the driving isolation module.

By adopting the technical scheme, the power factor correction module improves the power factor and reduces the interference to the power grid by optimizing the waveform of the input power supply; the phase-shifting full-bridge control module optimizes DC to DC conversion through accurate phase control, and improves the stability and efficiency of power supply output; the driving isolation module realizes electric isolation, effectively reduces electric shock and electric shock risks, and improves the safety of the system; the PWM output module ensures accurate power supply to the load through accurate pulse width modulation, so that the stability of the system is improved; the control module realizes the efficient and stable operation of the whole system by coordinating the work of each module; the connection between the circuit modules is organically cooperated, so that the problems of electromagnetic interference, power supply fluctuation, low safety and the like of a high-voltage driving power supply system are solved, and the stability and the safety of the application are improved.

Preferably, the power factor correction module comprises a rectification unit and an interleaved PFC unit, wherein the rectification unit is connected with a power grid, the power output end of the rectification unit is the positive electrode output end of the power factor correction module, the interleaved PFC unit comprises an interleaved PFC communication chip U900, a first driving chip U1, a second driving chip U2, a MOS transistor Q1 and a MOS transistor Q3, the power input end of the interleaved PFC communication chip U900 is used for connecting alternating current, the first signal output end of the interleaved PFC communication chip U900 is connected with the signal input end of the first driving chip U1, the signal output end of the first driving chip U1 is connected with the control end of the MOS transistor Q1, the power output end of the rectification unit is connected with the first conducting end of the MOS transistor Q1, the second conducting end of the MOS transistor Q1 is the negative electrode output end of the power factor correction module, the signal output end of the second driving chip U2 is connected with the control end of the MOS transistor Q3, and the power output end of the rectification unit is connected with the first conducting end of the MOS transistor Q3.

By adopting the technical scheme, the design effectively reduces harmonic distortion in the whole power factor correction module, improves the utilization efficiency of electric energy, reduces the pollution to a power grid, and achieves the technical effects of improving the power factor of the system and reducing electromagnetic interference; the synergistic effect of the whole circuit structure is beneficial to improving the stability and the safety of the high-voltage driving power supply system.

Preferably, the phase-shifting full-bridge control module comprises a PWM control unit, a boost element T5, a full-bridge conversion unit and a phase-shifting unit, wherein a signal output end of the PWM control unit is connected with a signal input end of the full-bridge conversion unit, a power output end of the power factor correction module is connected with a first end of a primary winding of the boost element T5, a second end of the primary winding of the boost element T5 is grounded, a power output end of a secondary winding of the boost element T5 is connected with a power input end of the phase-shifting unit, and a power output end of the phase-shifting unit outputs a power supply to supply power.

By adopting the technical scheme, the high-efficiency control and adjustment of the power supply output are realized, the problems of unstable voltage and fluctuation in a high-power supply system which needs high-voltage driving are solved, and the stability and the reliability of the system are improved.

Preferably, the phase shift unit is connected with a signal normal feedback unit, a power signal input end of the signal normal feedback unit is connected with a power output end of the phase shift unit, and a power signal output unit of the signal normal feedback unit is connected with a feedback signal port of the PWM control unit.

By adopting the technical scheme, the real-time monitoring of the power supply output is realized, and the monitored information is transmitted to the PWM control unit through the feedback signal port; such a real-time feedback mechanism helps to adjust the output signal of the PWM control unit in time when an abnormal condition occurs in the power output, thereby rapidly stabilizing the power output.

Preferably, the driving isolation module comprises a MOS tube QG1, a MOS tube QG2, a MOS tube QG3 and a MOS tube QG4, wherein a first conducting end of the MOS tube QG1 is connected with a first power output end of the phase-shifting full-bridge control module, a first conducting end of the MOS tube QG2 is connected with a second power output end of the phase-shifting full-bridge control module, a common node of the second conducting end of the MOS tube QG1 and the second conducting end of the MOS tube QG2 is the first power output end of the driving isolation module, a first conducting end of the MOS tube QG3 is connected with the first power output end of the phase-shifting full-bridge control module, a common node of the second conducting end of the MOS tube QG3 and the second conducting end of the MOS tube QG4 is the second power output end of the driving isolation module, and the first conducting end of the MOS tube QG3 and the MOS tube QG4 are used for controlling the state of the PWM tube QG1 and the PWM tube QG 4.

By adopting the technical scheme, the MOS tube QG1, the MOS tube QG2, the MOS tube QG3 and the MOS tube QG4 effectively isolate the first power supply output end and the second power supply output end in a mode of sharing the conducting ends; the PWM output module controls the on-off states of the MOS tubes, so that the output signals of the isolation module are accurately controlled.

Preferably, the PWM output module includes a PWM output chip US01 and a PWM output chip US02, a first signal output end of the PWM output chip US01 is connected with a control end of the MOS tube QG1, a second signal output end of the PWM output chip US01 is connected with a control end of the MOS tube QG2, a first signal output end of the PWM output chip US02 is connected with a control end of the MOS tube QG3, a second signal output end of the PWM output chip US02 is connected with a control end of the MOS tube QG4, a first PWM signal output end of the control module is connected with a first PWM signal input end of the PWM output chip US01, a second PWM signal output end of the control module is connected with a second PWM signal input end of the PWM output chip US01, a third PWM signal output end of the control module is connected with a first PWM signal input end of the PWM output chip US02, and a fourth signal output end of the control module is connected with a PWM signal input end of the PWM output chip US 02.

By adopting the technical scheme, the design effectively realizes the accurate control of the MOS tube, and ensures the stability and accuracy of power supply output; through reasonable signal distribution and control logic, the whole PWM output module is beneficial to optimizing the performance of a power supply system, improving the stability and reliability of the power supply system, and providing an efficient output management and control means for the power supply system which is high in power and needs high-voltage driving.

Preferably, the industrial power supply further comprises a power management module, the power management module comprises a first power control chip U5, a MOS tube Q10, a first transformation element T3, a first optocoupler, a main power control unit and a standby power control unit, a first end of a first primary winding of the first transformation element T3 is connected with a power output end of the power factor correction module, a second end of the first primary winding of the first transformation element T3 is connected with a first conducting end of the MOS tube Q10, a second conducting end of the MOS tube Q10 is grounded, a control end of the MOS tube Q10 is connected with a signal output end of the first power control chip U5, a triode U4A of the first optocoupler is connected between a feedback end of the first power control chip U5 and the ground, the first end of the first secondary winding of the first transformer T3 is connected with the positive end of the light emitting diode U4B of the first optocoupler, the second end of the first secondary winding of the first transformer T3 is connected with the negative end of the light emitting diode U4B of the first optocoupler, the first end of the first secondary winding of the first transformer T3 is connected with the power input end of the main power supply control unit so as to enable the main power supply control unit to output main power for supplying power, the power input end of the first power supply control chip U5 is connected with a power grid, the power output end of the first power supply control chip U5 is connected with the first end of the second primary winding of the first transformer T3, the second end of the second primary winding of the first transformer T3 is grounded, the power output end of the second secondary winding of the first transformer T3 is connected with the power input end of the standby power supply control unit, so that the standby power supply control unit outputs the standby power supply to supply power.

By adopting the technical scheme, the efficient management of the power supply and the switching of the standby power supply are realized; the configuration and connection mode of the first transformation element T3 enable the power management module to effectively acquire power from a power grid, the main power is output through the main power control unit, and meanwhile, the standby power control unit realizes the output of the standby power through the second secondary winding of the first transformation element T3; the first power supply control chip U5 is responsible for intelligently controlling the power supply, so that effective switching of the main power supply and the standby power supply is realized; meanwhile, feedback of a power supply control chip U5 is realized through optical couplers U4A and U4B, so that real-time monitoring of the power supply output state is realized; the design is beneficial to improving the stability, reliability and controllability of the power supply system, and ensures that the power supply system can be quickly switched to the standby power supply in the case of main power supply faults and the like, so that the continuity and reliability of power supply output are ensured.

Preferably, the main power supply control unit includes a voltage stabilizing chip US03 and a second voltage transforming element, a first end of a first secondary winding of the first voltage transforming element T3 is connected with a power input end of the voltage stabilizing chip US03, a power output end of the voltage stabilizing chip US03 is connected with a primary winding T6A of the second voltage transforming element, a power output end of a first secondary winding T6B of the second voltage transforming element is connected with a power input end of the PWM output chip US01, a power output end of a second secondary winding T6C of the second voltage transforming element is connected with a power input end of the PWM output chip US02, and a first end of the first secondary winding of the first voltage transforming element T3 is connected with an auxiliary power supply unit for outputting different power voltages.

By adopting the technical scheme, the multi-voltage regulation and control of the power supply output is realized, and the reliability and stability of the power supply are further optimized through the auxiliary power supply unit; the structure and the connection mode of the whole main power supply control unit are beneficial to improving the performance of the power supply system, and ensure that the power supply system can provide stable and reliable power supply output under different working conditions.

Preferably, the industrial power supply further comprises an RS485 communication module, the RS485 communication module comprises a second optocoupler, a third optocoupler, a fourth optocoupler and an RS485 communication chip US1, the power output end of the main power supply control unit is connected with the positive electrode end of a light emitting diode OT12AA of the second optocoupler, the negative electrode end of the light emitting diode OT12AA of the second optocoupler is grounded and is connected with the first voltage signal data port of the control module, the power output end of the main power supply control unit is connected with the positive electrode end of a light emitting diode OT6AA of the third optocoupler, the negative electrode end of the light emitting diode OT6AA of the third optocoupler is grounded and is connected with the second voltage signal data port of the control module, the power output end of the main power supply control unit is connected with the first conducting end of a triode OT9AB of the fourth optocoupler, the second conducting end of the triode OT9AB of the fourth optocoupler is grounded, the first conducting end of the triode 9AB of the fourth optocoupler is connected with the first conducting end of the fourth optocoupler, the second triode 1 is connected with the second conducting end of the fourth optocoupler, the fourth triode 6AA of the fourth optocoupler is connected with the first conducting end of the fourth optocoupler, the fourth triode 9AB of the fourth optocoupler is connected with the first conducting end of the fourth optocoupler, the fourth triode 1 is connected with the fourth voltage signal data port of the fourth optocoupler, the fourth triode 1 is connected with the fourth triode 1, the fourth triode signal output end of the fourth triode is connected with the fourth triode signal control unit is connected with the fourth triode 1, and the fourth triode signal output end of the fourth triode is connected with the fourth triode signal unit is grounded, the voltage signal output end of the RS485 communication chip US1 is used for transmitting voltage difference data.

By adopting the technical scheme, the state of the standby power supply and the power supply output information are monitored and transmitted; through the design, the state monitoring and the real-time data transmission of the power supply system are realized, and the remote monitoring and the management of the power supply system are facilitated; this can provide a more flexible and efficient remote monitoring means for power supply systems that are high power and require high voltage driving, ensuring the stability and reliability of the power supply system.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the phase-shifting full-bridge technology effectively reduces harmonic distortion and current harmonic in a power supply system and improves the power factor and the efficiency of the system by precisely controlling the working phase of the full-bridge converter. By adjusting the output phase, the power supply output can better adapt to the load demand, and the stability and the responsiveness of the system are enhanced. Overall, the phase-shifting full-bridge control circuit is beneficial to improving the performance of the power supply system, reducing the energy loss and further realizing more reliable and efficient power supply;

2. the power factor correction module adopts the staggered PFC technology, so that the harmonic content in the power supply system is effectively reduced, the current harmonic is reduced, the power supply output is clearer and accords with the standard current waveform, and the power factor of the power supply system is improved. The power supply system is beneficial to reducing power grid pollution, meets the power quality requirement, and improves the efficiency and reliability of the power supply system. Therefore, the staggered PFC control circuit is beneficial to improving the power factor and reducing harmonic distortion, so that the performance of the power supply system is optimized;

3. Through adopting the structure of MOS pipe QG1, MOS pipe QG2, MOS pipe QG3 and MOS pipe QG4 to carry out accurate control to it through PWM output module, realized the isolation and the drive to the output signal. The design effectively establishes reliable electrical isolation between the power supply output and the load, prevents potential electrical interference, and improves the safety of the system. Through the accurate control of PWM output module, can also ensure output signal's stability and accuracy to power supply system's reliability has been improved.

Drawings

Fig. 1 is a block diagram of a circuit structure of an industrial power supply of 3000w in an embodiment of the present application.

Fig. 2 is a schematic diagram of a partial circuit structure of a rectifying unit of a pfc module according to an embodiment of the present application.

Fig. 3 is a schematic diagram of a part of a circuit structure of an interleaved PFC unit of a PFC module according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a part of a circuit structure of an interleaved PFC unit of a PFC module according to an embodiment of the present application.

Fig. 5 is a schematic diagram of a partial circuit structure of a phase-shifting full-bridge control module according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a part of a circuit structure of a signal normal feedback unit in an embodiment of the present application.

Fig. 7 is a schematic diagram of a part of a circuit structure of the signal normal feedback unit in the embodiment of the present application.

Fig. 8 is a schematic diagram of a part of a circuit structure of a power management module in an embodiment of the application.

Fig. 9 is a schematic diagram of a part of a circuit structure of a main power control unit in the embodiment of the present application.

Fig. 10 is a schematic diagram of a part of a circuit structure of the RS485 communication module connected with the main power control unit in the embodiment of the present application.

Fig. 11 is a schematic diagram of a part of a circuit structure of the RS485 communication module connected to the standby power control unit in the embodiment of the present application.

Fig. 12 is a schematic diagram of a part of a circuit structure of the RS485 communication module connected to the standby power control unit in the embodiment of the present application.

Fig. 13 is a schematic diagram of a part of a circuit structure of a control module in an embodiment of the present application.

Fig. 14 is a schematic diagram of a partial circuit structure of a PWM output chip US01 of the PWM output module in the embodiment of the present application.

Fig. 15 is a schematic diagram of a partial circuit structure of a PWM output chip US02 of the PWM output module in the embodiment of the present application.

Fig. 16 is a schematic diagram of a partial circuit structure of a driving isolation module in an embodiment of the present application.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-16.

The embodiment of the application discloses 3000 w's industrial power supply, refer to fig. 1, industrial power supply includes power factor correction module, phase shift full-bridge control module, drive isolation module, PWM output module and the control module of being connected with the electric wire netting, power factor correction module's power output with phase shift full-bridge control module's power input end is connected, phase shift full-bridge control module's power output with drive isolation module's power input end is connected, drive isolation module's power output power supplies to the load, control module's signal output part with PWM output module's signal input part is connected, PWM output module's signal output part with drive isolation module's signal input part is connected.

According to the power factor correction module, the power factor is improved by optimizing the waveform of the input power supply, and the interference to a power grid is reduced; the phase-shifting full-bridge control module optimizes DC to DC conversion through accurate phase control, and improves the stability and efficiency of power supply output; the driving isolation module realizes electric isolation, effectively reduces electric shock and electric shock risks, and improves the safety of the system; the PWM output module ensures accurate power supply to the load through accurate pulse width modulation, so that the stability of the system is improved; the control module realizes the efficient and stable operation of the whole system by coordinating the work of each module; the connection between the circuit modules is organically cooperated, so that the problems of electromagnetic interference, power supply fluctuation, low safety and the like of a high-voltage driving power supply system are solved, and the stability and the safety of the application are improved.

Further, referring to fig. 2-4, the power factor correction module includes a rectifying unit and an interleaved PFC unit connected to a power grid, a power output end of the rectifying unit is an anode output end of the power factor correction module, the interleaved PFC unit includes an interleaved PFC communication chip U900, a first driving chip U1, a second driving chip U2, a MOS transistor Q1 and a MOS transistor Q3, a power input end of the interleaved PFC communication chip U900 is used for connecting with an alternating current, a first signal output end of the interleaved PFC communication chip U900 is connected with a signal input end of the first driving chip U1, a signal output end of the first driving chip U1 is connected with a control end of the MOS transistor Q1, a power output end of the rectifying unit is connected with a first conducting end of the MOS transistor Q1, a second conducting end of the MOS transistor Q1 is a cathode output end of the power factor correction module, a signal output end of the second driving chip U2 is connected with a control end of the MOS transistor Q3, and a signal output end of the interleaved PFC communication chip U900 is connected with a second conducting end of the MOS transistor Q3.

According to the staggered PFC communication chip U900, the UCC28070 is adopted, the corresponding control algorithm is executed to realize power factor correction by receiving an input signal from an alternating current power supply, the UCC27324D is adopted as the first driving chip U1 to receive a signal from the U900, the MOS tube Q1 is controlled through the signal output end of the driving chip U1, the MOS tube Q3 is controlled through the signal output end of the driving chip U2 similarly to the driving chip U1 and the driving chip Q1, the on-off actions of the MOS tube Q1 and the MOS tube Q3 are further controlled, and the MOS tube Q1 and the MOS tube Q3 are allowed to be conducted at different time points so as to form a staggered conduction mode. This helps smooth the output current waveform, improves power factor, reduces harmonics, and reduces peaks in the input current. The whole process is conducive to enabling the power factor to approach 1 so as to meet the requirement of power factor correction;

The design effectively reduces harmonic distortion in the whole power factor correction module, improves the utilization efficiency of electric energy, reduces pollution to a power grid, and achieves the technical effects of improving the power factor of the system and reducing electromagnetic interference; the synergistic effect of the whole circuit structure is beneficial to improving the stability and the safety of the high-voltage driving power supply system.

Still further, referring to fig. 4, the SS pin of the interleaved PFC communication chip U900 is connected to the drain of the MOS transistor Q900, the source of the MOS transistor Q900 is grounded, the gate of the MOS transistor Q900 is connected to the output of the comparator U901, the non-inverting input terminal of the comparator U901 is grounded, and the inverting input terminal of the comparator U901 is connected to the power grid, so as to provide a soft start function for the interleaved PFC communication chip U900, thereby preventing the switching power supply from generating excessive current and pressure at the moment of starting, and contributing to improving the stability of the system

Further, referring to fig. 5, the phase-shifting full-bridge control module includes a PWM control unit, a boost element T5, a full-bridge conversion unit, and a phase-shifting unit, where a signal output end of the PWM control unit is connected to a signal input end of the full-bridge conversion unit, a power output end of the power factor correction module is connected to a first end of a primary winding of the boost element T5, a second end of the primary winding of the boost element T5 is grounded, a power output end of a secondary winding of the boost element T5 is connected to a power input end of the phase-shifting unit, and a power output end of the phase-shifting unit outputs a power to supply power.

In the application, the PWM control unit is responsible for generating an accurate control signal, and is connected with the full-bridge conversion unit, so that the output of the power supply is subjected to full-bridge conversion, and accurate voltage regulation can be realized at the output end of the power supply; the boosting element T5 plays a role in boosting so that the power supply can achieve the required high-voltage output; the phase shifting unit coordinates the work of each module by adjusting the phase relation, so that the overall efficiency and stability of the system are improved; the design realizes the high-efficiency control and adjustment of the power supply output, is beneficial to solving the problems of unstable voltage and fluctuation in a high-power supply system which needs high-voltage driving, and improves the stability and reliability of the system;

specifically, the PWM control unit includes a PWM control chip U200, whose model is UCC28950, and whose two output terminals are respectively connected to a driver, model UCC21520, to control the MOSFET switches in the full-bridge converter topology to generate the desired output waveforms, and the phase shifting unit adjusts the phase of the output signal after being boosted to a higher voltage level by the boost element T5, using an inductor, capacitor, or other phase shifting element.

Further, referring to fig. 6-7, the phase shift unit is connected with a normal signal feedback unit, a power signal input end of the normal signal feedback unit is connected with a power output end of the phase shift unit, and a power signal output unit of the normal signal feedback unit is connected with a feedback signal port of the PWM control unit.

The monitoring and feedback mechanism for the power supply output signal is successfully established by introducing the signal normal feedback unit into the phase shifting unit; the design realizes real-time monitoring of the power supply output through the normal feedback unit of the connecting signal, and transmits the monitored information to the PWM control unit through the feedback signal port; such a real-time feedback mechanism helps to adjust the output signal of the PWM control unit in time when an abnormal condition occurs in the power output, thereby rapidly stabilizing the power output.

Further, referring to fig. 16, the driving isolation module includes a MOS tube QG1, a MOS tube QG2, a MOS tube QG3, and a MOS tube QG4, a first conductive end of the MOS tube QG1 is connected to a first power output end of the phase-shifting full-bridge control module, a first conductive end of the MOS tube QG2 is connected to a second power output end of the phase-shifting full-bridge control module, a common node between the second conductive end of the MOS tube QG1 and the second conductive end of the MOS tube QG2 is the first power output end of the driving isolation module, a first conductive end of the MOS tube QG3 is connected to the first power output end of the phase-shifting full-bridge control module, a common node between the second conductive end of the MOS tube QG3 and the second conductive end of the MOS tube QG4 is the second power output end of the driving isolation module, and the MOS tube QG3 is used for the driving output end of the MOS tube QG2 and the MOS tube QG 4.

According to the method, the first power supply output end and the second power supply output end are effectively isolated through the mode that the MOS tube QG1 and the MOS tube QG2 and the MOS tube QG3 and the MOS tube QG4 share the conducting end; the PWM output module controls the on-off states of the MOS tubes, so that the output signals of the isolation module are accurately controlled.

Further, referring to fig. 14-15, the PWM output module includes a PWM output chip US01 and a PWM output chip US02, a first signal output end of the PWM output chip US01 is connected to the control end of the MOS tube QG1, a second signal output end of the PWM output chip US01 is connected to the control end of the MOS tube QG2, a first signal output end of the PWM output chip US02 is connected to the control end of the MOS tube QG3, a second signal output end of the PWM output chip US02 is connected to the control end of the MOS tube QG4, a first PWM signal output end of the control module is connected to the first PWM signal input end of the PWM output chip US01, a second PWM signal output end of the control module is connected to the second PWM signal input end of the PWM output chip US01, a third PWM signal output end of the control module is connected to the first PWM signal input end of the PWM output chip US02, and a fourth PWM signal output end of the control module is connected to the second PWM signal input end of the PWM output chip US 02.

The switching on and switching off of the four MOS tubes can be accurately controlled through the PWM output module according to the PWM signals provided by the control module, so that the precise adjustment and control of the circuit are realized, and I2VG1 and I2VG3 are +/-400VDC pulse output circuits connected with loads; p1 and P2N are the same group, P2 and P1N are one group, and staggered pulse signals are added between the two groups, dead time is reserved, so that the occurrence of tube explosion caused by simultaneous conduction of QG1 and QG2, and the driving isolation circuits of four switching tubes prevent front-stage short circuits; through reasonable signal distribution and control logic, the whole PWM output module is beneficial to optimizing the performance of a power supply system, improving the stability and reliability of the power supply system, and providing an efficient output management and control means for the power supply system which is high in power and needs high-voltage driving.

Further, referring to fig. 8-9, the industrial power supply further includes a power management module, the power management module includes a first power control chip U5, a MOS transistor Q10, a first transformer element T3, a first optocoupler, a main power control unit, and a standby power control unit, a first end of a first primary winding of the first transformer element T3 is connected to a power output end of the power factor correction module, a second end of the first primary winding of the first transformer element T3 is connected to a first conducting end of the MOS transistor Q10, a second conducting end of the MOS transistor Q10 is grounded, a control end of the MOS transistor Q10 is connected to a signal output end of the first power control chip U5, a triode U4A of the first optocoupler is connected between a feedback end of the first power control chip U5 and ground, the first end of the first secondary winding of the first transformer T3 is connected with the positive end of the light emitting diode U4B of the first optocoupler, the second end of the first secondary winding of the first transformer T3 is connected with the negative end of the light emitting diode U4B of the first optocoupler, the first end of the first secondary winding of the first transformer T3 is connected with the power input end of the main power supply control unit so as to enable the main power supply control unit to output main power for supplying power, the power input end of the first power supply control chip U5 is connected with a power grid, the power output end of the first power supply control chip U5 is connected with the first end of the second primary winding of the first transformer T3, the second end of the second primary winding of the first transformer T3 is grounded, the power output end of the second secondary winding of the first transformer T3 is connected with the power input end of the standby power supply control unit, so that the standby power supply control unit outputs the standby power supply to supply power.

According to the power supply circuit, the main power supply is generated through the transformation of the first transformation element T3, when the main power supply is normally powered, the light emitting diode U4B of the first optocoupler emits light, so that the triode U4A of the first optocoupler is conducted, a feedback signal is equivalent to a feedback signal for the first power supply control chip U5 to make a certain feedback signal, the first power supply control chip U5 is an AC/DC power supply control IC, the model is FA8A00N, and the first power supply control chip U5 outputs the feedback signal to the grid electrode of the MOSFET through generating a PWM signal. The on time and the off time of the MOSFET can be controlled by adjusting the duty ratio of the PWM signal, so that the voltage and the current output by the power supply are controlled, the first power supply control chip U5 outputs the power supply voltage to the second primary winding of the first transformation element T3, and the standby power supply is further output after transformation, so that uninterrupted power supply of the driving power supply is realized;

thereby realizing the high-efficiency management of the power supply and the switching of the standby power supply; the configuration and connection mode of the first transformation element T3 enable the power management module to effectively acquire power from a power grid, the main power is output through the main power control unit, and meanwhile, the standby power control unit realizes the output of the standby power through the second secondary winding of the first transformation element T3; the first power supply control chip U5 is responsible for intelligently controlling the power supply, so that effective switching of the main power supply and the standby power supply is realized; meanwhile, feedback of a power supply control chip U5 is realized through optical couplers U4A and U4B, so that real-time monitoring of the power supply output state is realized; the design is beneficial to improving the stability, reliability and controllability of the power supply system, and ensures that the power supply system can be quickly switched to a standby power supply under the conditions of main power supply faults and the like, so that the continuity and reliability of power supply output are ensured;

Further, referring to fig. 9, the main power supply control unit includes a voltage stabilizing chip US03 and a second voltage transforming element, a first end of a first secondary winding of the first voltage transforming element T3 is connected with a power input end of the voltage stabilizing chip US03, a power output end of the voltage stabilizing chip US03 is connected with a primary winding T6A of the second voltage transforming element, a power output end of a first secondary winding T6B of the second voltage transforming element is connected with a power input end of the PWM output chip US01, a power output end of a second secondary winding T6C of the second voltage transforming element is connected with a power input end of the PWM output chip US02, and a first end of the first secondary winding of the first voltage transforming element T3 is connected with an auxiliary power supply unit for outputting different power voltages.

After the voltage is stabilized by the voltage stabilizing chip US03, the 12V power supply voltage meeting the requirements of PWM output chips US01 and US02 is output after certain voltage transformation, and meanwhile, the power supply voltage of 3.3V, 5V or 12V is also output by the auxiliary power supply unit so as to meet the power supply requirements of different chips,

the multi-voltage regulation and control of the power supply output are realized, and the reliability and stability of the power supply are further optimized through the auxiliary power supply unit; the structure and the connection mode of the whole main power supply control unit are beneficial to improving the performance of the power supply system, and ensure that the power supply system can provide stable and reliable power supply output under different working conditions.

Further, referring to fig. 10-12, the industrial power supply further includes an RS485 communication module, where the RS485 communication module includes a second optocoupler, a third optocoupler, a fourth optocoupler, and an RS485 communication chip US1, where a power output end of the main power supply control unit is connected to an anode end of a light emitting diode OT12AA of the second optocoupler, a cathode end of the light emitting diode OT12AA of the second optocoupler is grounded and connected to a first voltage signal data port of the control module, a power output end of the main power supply control unit is connected to an anode end of a light emitting diode OT6AA of the third optocoupler, a cathode end of the light emitting diode OT6AA of the third optocoupler is grounded and connected to a second voltage signal data port of the control module, a power output end of the main power supply control unit is connected to a first conducting end of a triode OT9AB of the fourth optocoupler, a second conducting end of the triode 9AB of the fourth optocoupler is grounded, the first conducting end of the triode OT9AB of the fourth optocoupler is connected with the third voltage signal data port of the control module, the power output end of the standby power supply control unit is connected with the first conducting end of the triode OT12AB of the second optocoupler, the second conducting end of the triode OT12AB of the second optocoupler is connected with the first conducting end of the triode OT6AB of the third optocoupler and is connected with the first voltage signal data port of the RS485 communication chip US1, the second conducting end of the triode OT6AB of the third optocoupler is connected with the second voltage signal data port of the RS485 communication chip US1, the power output end of the standby power supply control unit is connected with the positive electrode end of the light emitting diode OT9AA of the fourth optocoupler, the negative electrode end of the light emitting diode OT9AA of the fourth optocoupler is connected with the third voltage signal data port of the RS485 communication chip US1, the voltage signal output end of the RS485 communication chip US1 is used for transmitting voltage difference data.

In the application, when the main power supply normally supplies power, the OT6AA and the OT12AA normally emit light so that the OT6AB and the OT12AB are normally conducted, and the standby power supply is not started, so that the OT9AB is not conducted yet, the control module receives a 485 signal for normally supplying power to the main power supply, but when the main power supply is in an abnormal state, the light-emitting diode U4B of the first optocoupler does not emit light any more, the first power supply control chip U5 emits a signal for assisting the main power supply to supply power to the standby power supply, at the moment, the OT9AA emits light so that the OT9AB is conducted, and the control module receives the 485 signal for starting the standby power supply, so that the power supply 2 is ensured to use mutual backup, alarm and uninterrupted power supply simultaneously, and the state of the standby power supply and the monitoring and transmission of power supply output information are realized; through the design, the state monitoring and the real-time data transmission of the power supply system are realized, and the remote monitoring and the management of the power supply system are facilitated; this can provide a more flexible and efficient remote monitoring means for power supply systems that are high power and require high voltage driving, ensuring the stability and reliability of the power supply system.

Still further, referring to fig. 13, the control module is further connected with a temperature control module and an address code module, and the intelligent power supply device improves the power, the efficiency and the electric energy output stability and simultaneously realizes more intelligent control through the connection with the temperature control module and the address code module. The temperature control module monitors the working temperature of the system, adjusts the operation parameters of the power supply through a control mechanism, ensures that the system can maintain a proper temperature range in various working environments, and improves the reliability and service life of the system. The address code module provides individual identification for the multi-power system, and through setting of the address code, the functions of interlocking, backup and alarming of the power supplies are realized, so that seamless switching and mutual communication between the two power supplies can be realized, and the system can continuously and stably provide power supply output under any condition. The intelligent power supply device integrates the modules, and achieves various technical effects on the basis of high efficiency, reliability and intelligence.

The implementation principle of the 3000w industrial power supply in the embodiment of the application is as follows:

the application is a standard 3KW input 100-264Vac output: 400VDC, 7.5A AC TO DC circuit diagram, PFC part has used the interleaved PFC technology, DC TO DC has used the phase-shifting full bridge technology, ensure the power, efficiency TO achieve best, through DC TO DC pulse generator circuit, interlock, RS485 circuit, ensure 2 power supplies use one kind of intellectual device that backup each other, alarm, uninterrupted power supply at the same time;

the 3KW AC TO DC power supply device adopts an interleaving PFC technology, and realizes effective rectification of input current through an interleaving control unit, so as TO optimize the power factor. The DC TO DC part adopts a phase-shifting full-bridge technology, and the reasonable control of the switching device is realized by adjusting the phase so as TO improve the efficiency and the power conversion performance. The pulse generator circuit further optimizes the output waveform. The system is provided with the interlocking and RS485 communication module, so that two power supplies can be mutually backed up, an alarm function is realized, high reliability and stability of the system in operation are ensured, and uninterrupted power supply is provided. In the whole, the intelligent device integrates advanced power supply technology and intelligent control means, and ensures high-efficiency, stable and reliable output of electric energy.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. The 3000w industrial power supply is characterized by comprising a power factor correction module, a phase-shifting full-bridge control module, a driving isolation module, a PWM output module and a control module which are connected with a power grid, wherein the power output end of the power factor correction module is connected with the power input end of the phase-shifting full-bridge control module, the power output end of the phase-shifting full-bridge control module is connected with the power input end of the driving isolation module, the power output end of the driving isolation module outputs power to a load for supplying power, the signal output end of the control module is connected with the signal input end of the PWM output module, and the signal output end of the PWM output module is connected with the signal input end of the driving isolation module.

2. The industrial power supply according to claim 1, wherein the power factor correction module comprises a rectifying unit and an interleaved PFC unit, the rectifying unit is connected to a power grid, the power output end of the rectifying unit is an anode output end of the power factor correction module, the interleaved PFC unit comprises an interleaved PFC communication chip U900, a first driving chip U1, a second driving chip U2, a MOS transistor Q1 and a MOS transistor Q3, the power input end of the interleaved PFC communication chip U900 is used for connecting with an alternating current, the first signal output end of the interleaved PFC communication chip U900 is connected with the signal input end of the first driving chip U1, the signal output end of the first driving chip U1 is connected with the control end of the MOS transistor Q1, the power output end of the rectifying unit is connected with the first conducting end of the MOS transistor Q1, the second conducting end of the MOS transistor Q1 is a cathode output end of the power factor correction module, the signal output end of the second driving chip U2 is connected with the control end of the MOS transistor Q3, and the first conducting end of the MOS transistor Q3 is connected with the second conducting end of the MOS transistor Q3.

3. The 3000w industrial power supply according to claim 1, wherein the phase-shifting full-bridge control module comprises a PWM control unit, a boost element T5, a full-bridge conversion unit and a phase-shifting unit, wherein a signal output end of the PWM control unit is connected to a signal input end of the full-bridge conversion unit, a power output end of the power factor correction module is connected to a first end of a primary winding of the boost element T5, a second end of the primary winding of the boost element T5 is grounded, a power output end of a secondary winding of the boost element T5 is connected to a power input end of the phase-shifting unit, and a power output end of the phase-shifting unit outputs a power supply to supply power.

4. A 3000w industrial power supply according to claim 3, wherein the phase-shift unit is connected to a normal signal feedback unit, a power signal input end of the normal signal feedback unit is connected to a power output end of the phase-shift unit, and a power signal output end of the normal signal feedback unit is connected to a feedback signal port of the PWM control unit.

5. The industrial power supply according to claim 1, wherein the driving isolation module comprises a MOS tube QG1, a MOS tube QG2, a MOS tube QG3 and a MOS tube QG4, a first conducting end of the MOS tube QG1 is connected with a first power output end of the phase-shifting full-bridge control module, a first conducting end of the MOS tube QG2 is connected with a second power output end of the phase-shifting full-bridge control module, a common node of the second conducting end of the MOS tube QG1 and the second conducting end of the MOS tube QG2 is the first power output end of the driving isolation module, a first conducting end of the MOS tube QG3 is connected with the first power output end of the phase-shifting full-bridge control module, a second conducting end of the MOS tube QG4 is connected with a second power output end of the phase-shifting full-bridge control module, and a common node of the second conducting end of the MOS tube QG3 and the MOS tube QG4 is the driving isolation module and the common node of the MOS tube QG3 and the MOS tube QG4 is the driving isolation module.

6. The industrial power supply according to claim 5, wherein the PWM output module comprises a PWM output chip US01 and a PWM output chip US02, a first signal output end of the PWM output chip US01 is connected to the control end of the MOS tube QG1, a second signal output end of the PWM output chip US01 is connected to the control end of the MOS tube QG2, a first signal output end of the PWM output chip US02 is connected to the control end of the MOS tube QG3, a second signal output end of the PWM output chip US02 is connected to the control end of the MOS tube QG4, a first PWM signal output end of the control module is connected to the first PWM signal input end of the PWM output chip US01, a second PWM signal output end of the control module is connected to the second PWM signal input end of the PWM output chip US01, a third PWM signal output end of the control module is connected to the first PWM signal input end of the output chip US02, and a fourth PWM signal output end of the control module is connected to the PWM signal input end of the PWM output chip US 02.

7. The industrial power supply according to claim 6, further comprising a power management module, wherein the power management module comprises a first power control chip U5, a MOS transistor Q10, a first transformer T3, a first optocoupler, a main power control unit, and a standby power control unit, a first end of a first primary winding of the first transformer T3 is connected to a power output end of the power factor correction module, a second end of the first primary winding of the first transformer T3 is connected to a first conducting end of the MOS transistor Q10, the second conducting end of the MOS transistor Q10 is grounded, a control end of the MOS transistor Q10 is connected to a signal output end of the first power control chip U5, a triode U4A of the first optocoupler is connected between a feedback end of the first power control chip U5 and ground, the first end of the first secondary winding of the first transformer T3 is connected with the positive end of the light emitting diode U4B of the first optocoupler, the second end of the first secondary winding of the first transformer T3 is connected with the negative end of the light emitting diode U4B of the first optocoupler, the first end of the first secondary winding of the first transformer T3 is connected with the power input end of the main power supply control unit so as to enable the main power supply control unit to output main power for supplying power, the power input end of the first power supply control chip U5 is connected with a power grid, the power output end of the first power supply control chip U5 is connected with the first end of the second primary winding of the first transformer T3, the second end of the second primary winding of the first transformer T3 is grounded, the power output end of the second secondary winding of the first transformer T3 is connected with the power input end of the standby power supply control unit, so that the standby power supply control unit outputs the standby power supply to supply power.

8. The industrial power supply according to claim 7, wherein the main power supply control unit comprises a voltage stabilizing chip US03 and a second voltage transforming element, a first end of a first secondary winding of the first voltage transforming element T3 is connected with a power supply input end of the voltage stabilizing chip US03, a power supply output end of the voltage stabilizing chip US03 is connected with a primary winding T6A of the second voltage transforming element, a power supply output end of a first secondary winding T6B of the second voltage transforming element is connected with a power supply input end of the PWM output chip US01, a power supply output end of a second secondary winding T6C of the second voltage transforming element is connected with a power supply input end of the PWM output chip US02, and a first end of a first secondary winding of the first voltage transforming element T3 is connected with an auxiliary power supply unit for outputting different power supply voltages.

9. The industrial power supply according to claim 7, further comprising an RS485 communication module, wherein the RS485 communication module comprises a second optocoupler, a third optocoupler, a fourth optocoupler and an RS485 communication chip US1, a power output terminal of the main power control unit is connected to an anode terminal of a light emitting diode OT12AA of the second optocoupler, a cathode terminal of the light emitting diode OT12AA of the second optocoupler is grounded and is connected to a first voltage signal data port of the control module, a power output terminal of the main power control unit is connected to an anode terminal of a light emitting diode OT6AA of the third optocoupler, a cathode terminal of the light emitting diode OT6AA of the third optocoupler is grounded and is connected to a second voltage signal data port of the control module, a power output terminal of the main power control unit is connected to a first conducting terminal of a light emitting diode OT9AB of the fourth optocoupler, a second conducting terminal of the fourth optocoupler is grounded, a second conducting terminal of the fourth optocoupler AB 9AB is connected to a second conducting terminal of the fourth optocoupler, a second conducting terminal of the fourth optocoupler is connected to a second conducting terminal of the first voltage signal data port of the fourth optocoupler, a third voltage signal port of the fourth optocoupler OT9AB is connected to a second conducting terminal of the fourth optocoupler, a fourth voltage signal data port of the fourth optocoupler is connected to a second conducting terminal of the fourth optocoupler 6AA of the fourth optocoupler, and is connected to a second voltage signal data port of the fourth signal port of the fourth optocoupler is connected to the fourth terminal of the fourth optocoupler, and is connected to the fourth signal port, the negative end of the light emitting diode OT9AA of the fourth optocoupler is connected with the third voltage signal data port of the RS485 communication chip US1, and the voltage signal output end of the RS485 communication chip US1 is used for transmitting voltage difference data.