Electronic equipment, power supply control method and device thereof, storage medium and product

Abstract

The invention discloses electronic equipment and a power supply control method and device thereof, a storage medium and a product, and the electronic equipment comprises an electricity load which is powered by a three-phase passive PFC circuit, and obtains the operation parameters of the three-phase passive PFC circuit in the operation process of the electronic equipment; and controlling the three-phase passive PFC circuit to be switched from a first power supply state of three-phase phase line power supply to a second power supply state of two-phase phase line power supply set in the three-phase phase lines based on the operation parameters and a set threshold value. Thus, switching of the three-phase passive PFC circuit from the first power supply state to the second power supply state, namely switching of the three-phase power supply state to the two-phase power supply state, can be realized based on the operation parameters of the three-phase passive PFC circuit acquired in the operation process of the electronic equipment, and power loss in the operation process of the electronic equipment can be effectively reduced. And thus, the energy-saving effect of the electronic equipment is improved.

Description

Technical Field

[0001] This application relates to power electronics technology, and more particularly to an electronic device and its power supply control method, apparatus, storage medium and product. Background Technology

[0002] Power factor correction (PFC) circuits are used to control the waveform of the input current, so that the waveforms of the input current and input voltage are synchronized as much as possible, thereby improving the power factor, reducing harmonic content, and solving electromagnetic interference and capacitor compatibility issues.

[0003] In related technologies, for electronic devices powered by three-phase passive PFC circuits, an AC reactor (i.e., an inductor) is typically installed on each phase of the three-phase AC power supply line, or a DC reactor (i.e., an inductor) is installed on the DC side after three-phase rectification. This utilizes the principle that the current in an inductor cannot change abruptly to improve the power factor. However, during operation, electronic devices often switch from an initial high-load operating state to a stable low-load operating state. For example, as the indoor temperature gradually reaches the set temperature, the compressor's operating frequency in an air conditioner gradually decreases from high power to the frequency corresponding to medium and low power. When using a three-phase power supply, the number of power devices flowing through the current loop is large, resulting in significant power loss. Especially under low-load operating conditions, the power loss of the control board needs optimization. Since the electronic device operates for a relatively long time under these low-load conditions, the power loss of the power devices leads to energy waste, affecting the energy-saving effect of the electronic device. Summary of the Invention

[0004] In view of this, embodiments of this application provide an electronic device and its power supply control method, apparatus, storage medium and product, which aim to reduce the power loss of electronic devices powered by three-phase passive PFC circuits.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a power supply control method for an electronic device, the electronic device comprising: an electrical load powered by a three-phase passive PFC circuit, the method comprising:

[0007] Obtain the operating parameters of the three-phase passive PFC circuit during the operation of the electronic device;

[0008] Based on the operating parameters and set thresholds, the three-phase passive PFC circuit is controlled to switch from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two phase lines set among the three phase lines.

[0009] In some implementations, the operating parameters include the supply current value of each phase line in the three-phase phase lines and / or the DC bus current value of the three-phase passive PFC circuit. The step of controlling the three-phase passive PFC circuit to switch from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two designated phase lines in the three-phase phase lines, based on the operating parameters and a set threshold, includes:

[0010] If it is determined that each of the power supply current values ​​and / or the DC bus current values ​​is less than or equal to a set threshold, then the three-phase passive PFC circuit is controlled to switch from a first power supply state powered by three-phase phase lines to a second power supply state powered by two of the three-phase phase lines.

[0011] In some implementations, the method further includes:

[0012] The set threshold is determined based on the power loss values ​​of the electronic device at each operating current value in the first power supply state and the second power supply state.

[0013] The set threshold represents the critical value of the operating current where the power loss value under the second power supply state is less than the power loss value under the first power supply state.

[0014] In some implementations, the method further includes:

[0015] In the second power supply state, if it is determined that the power supply current value and / or the DC bus current value are greater than the set threshold, the three-phase passive PFC circuit is controlled to switch from the second power supply state to the first power supply state.

[0016] In some implementations, the method further includes:

[0017] Obtain the environmental parameters of the electronic device;

[0018] The operating power of the electronic device's electrical load is adjusted based on the environmental parameters.

[0019] In some embodiments, the three-phase passive PFC circuit includes a protection circuit for preventing inrush current. The protection circuit includes a first impedance branch and a second impedance branch. The first impedance branch is connected in parallel to a first phase line of the three-phase circuit, and the second impedance branch is connected in parallel to a second phase line of the three-phase circuit. Both the first and second impedance branches include a PTC (Positive Temperature Coefficient) thermistor. A first switching element for short-circuiting the first impedance branch is disposed on the first phase line, and a second switching element for short-circuiting the second impedance branch is disposed on the second phase line. The method further includes:

[0020] In response to the power-on command of the electronic device, both the first and second switching elements are turned off, so that the three-phase passive PFC circuit is in the third power supply state.

[0021] If it is determined that the DC bus voltage of the three-phase passive PFC circuit is greater than or equal to the set voltage value, then the first switching element and the second switching element are both turned on, so that the three-phase PFC circuit switches to the first power supply state.

[0022] In some implementations, the switching of the three-phase passive PFC circuit from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two selected phase lines of the three-phase phase lines includes:

[0023] The first switching element is controlled to open, and the first impedance branch is disconnected, so that the first phase line stops receiving power; or,

[0024] The second switching element is turned off, and the second impedance branch is disconnected, so that the second phase line stops supplying power.

[0025] Secondly, embodiments of this application provide a power supply control device for an electronic device, the electronic device comprising: an electrical load powered by a three-phase passive PFC circuit, the power supply control device comprising:

[0026] The acquisition module is used to acquire the operating parameters of the three-phase passive PFC circuit during the operation of the electronic device;

[0027] The control module is used to control the three-phase passive PFC circuit to switch from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two phase lines set among the three phase lines, based on the operating parameters and the set threshold.

[0028] Thirdly, embodiments of this application provide an electronic device, the electronic device including: an electrical load powered by a three-phase passive PFC circuit, the electronic device further including: a processor and a memory for storing a computer program capable of running on the processor, wherein, when the processor is used to run the computer program, it executes the steps of the method described in the first aspect of embodiments of this application.

[0029] In some implementations, the electronic device is an air conditioner.

[0030] Fourthly, embodiments of this application provide a computer storage medium storing a computer program, which, when executed by a processor, implements the steps of the method described in the first aspect of embodiments of this application.

[0031] Fifthly, embodiments of this application provide a computer program product, including a computer program, which, when executed by a processor, implements the steps of the method described in the first aspect of embodiments of this application.

[0032] The technical solution provided in this application embodiment includes an electronic device comprising: an electrical load powered by a three-phase passive PFC circuit; acquiring the operating parameters of the three-phase passive PFC circuit during the operation of the electronic device; and, based on the operating parameters and a set threshold, controlling the three-phase passive PFC circuit to switch from a first power supply state powered by three-phase lines to a second power supply state powered by two selected phase lines. Thus, based on the operating parameters of the three-phase passive PFC circuit acquired during the operation of the electronic device, the three-phase passive PFC circuit can switch from the first power supply state to the second power supply state, i.e., from a three-phase power supply state to a two-phase power supply state, effectively reducing power loss during the operation of the electronic device and thereby improving its energy-saving effect. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a three-phase passive PFC circuit in related technologies;

[0034] Figure 2 This is another schematic diagram of a three-phase passive PFC circuit in related technologies;

[0035] Figure 3 This is a schematic flowchart of the power supply control method for an electronic device according to an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the structure of a three-phase passive PFC circuit in an application embodiment of this application;

[0037] Figure 5 This is another schematic diagram of the three-phase passive PFC circuit in the application embodiment of this application;

[0038] Figure 6 This is a flowchart illustrating the power supply control method for an electronic device in an application embodiment of this application;

[0039] Figure 7 This is a schematic diagram of the power supply control device for an electronic device according to an embodiment of this application;

[0040] Figure 8 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0041] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0043] It should be noted that the PFC circuit can control the waveform of the input current, so that the waveforms of the input current and the input voltage are as synchronized as possible. This solves problems such as asynchronous input power supply voltage and current waveforms and the presence of harmonics, thereby improving the power factor of the circuit and reducing the harmonic content.

[0044] In related technologies, in order to control hardware costs and reduce pollution to power grid harmonics, three-phase passive PFC circuits are often used to power electronic devices. Passive PFC circuits do not use active devices such as transistors, but are composed of passive devices such as diodes, resistors, capacitors and inductors. Moreover, passive PFC circuits do not use an additional energy source, thus effectively reducing hardware costs.

[0045] Reference Figure 1 In one example, the three-phase passive PFC circuit includes: three phase lines connected in a Y-shape, i.e. Figure 1 The first ends of phase lines A, B, and C are connected to the same endpoint, which forms the neutral point N. An inductor is installed on each of the three phase lines (e.g., inductor La on phase A, inductor Lb on phase B, and inductor Lc on phase C). The inductors on each phase line smooth the alternating current, which is then converted to direct current by a three-phase rectifier circuit and passed through the bus capacitor C. o The filtered power supply is then supplied to the downstream electrical load. The three-phase rectifier circuit can employ a three-phase full-wave rectifier bridge, including diodes D1 and D2 connected in a bridge configuration to phase A, diodes D3 and D4 connected in a bridge configuration to phase B, and diodes D5 and D6 connected in a bridge configuration to phase C.

[0046] Reference Figure 2 In another example, the three-phase passive PFC circuit includes: three phase lines connected in a Y-shape, i.e. Figure 2 The first ends of phase lines A, B, and C are connected to the same endpoint, which forms the neutral point N. The second ends of phase lines A, B, and C are connected to a three-phase rectifier circuit, which converts the phase current into direct current. This direct current is then rectified by the inductor L and the bus capacitor C. oThe resonant circuit, after resonant filtering, supplies power to the downstream load. The three-phase rectifier circuit can employ a three-phase full-wave rectifier bridge, including diodes D1 and D2 connected to the A-phase phase line in a bridge configuration, diodes D3 and D4 connected to the B-phase phase line in a bridge configuration, and diodes D5 and D6 connected to the C-phase phase line in a bridge configuration.

[0047] Understandable, Figure 1 The three-phase passive PFC circuit shown has an AC reactor installed on each phase line of the three-phase AC side. Figure 2 The three-phase passive PFC circuit shown has a DC reactor on the DC side after three-phase rectification. The power loss of the entire three-phase passive PFC circuit during electronic equipment operation needs further optimization.

[0048] Based on this, embodiments of this application provide a power supply control method for an electronic device, applied to a control device, such as a processor built into the electronic device or a processor independent of the electronic device. The electronic device includes: an electrical load powered by a three-phase passive PFC circuit, such as... Figure 3 As shown, the method includes:

[0049] Step 301: Obtain the operating parameters of the three-phase passive PFC circuit during the operation of the electronic device.

[0050] Step 302: Based on the operating parameters and the set threshold, control the three-phase passive PFC circuit to switch from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two phase lines set in the three-phase phase lines.

[0051] Here, during operation, electronic devices often switch from a high-load operating state in the initial stage to a low-load operating state in a stable stage. For example, as the indoor temperature gradually reaches the set temperature, the operating frequency of the compressor in an air conditioner gradually decreases from high power to the frequency corresponding to medium and low power. The power supply control method of this application embodiment can switch the three-phase passive PFC circuit from a first power supply state to a second power supply state, i.e., from a three-phase power supply state to a two-phase power supply state, based on the operating parameters of the three-phase passive PFC circuit obtained during the operation of the electronic device. Since the number of power devices flowing through the current loop is reduced in the two-phase power supply state, the power loss during the operation of the electronic device can be effectively reduced, thereby improving the energy-saving effect of the electronic device.

[0052] It should be noted that, in the embodiments of this application, the obtained operating parameters can be relevant parameters characterizing the load state of the electronic device. In this way, it can be determined whether the electronic device has entered the set load state based on the operating parameters. If so, the three-phase passive PFC circuit is controlled to switch from the first power supply state to the second power supply state, thereby scientifically and effectively improving the energy-saving effect of the electronic device.

[0053] For example, the operating parameters include the supply current value of each phase line in the three-phase phase lines and / or the DC bus current value of the three-phase passive PFC circuit. The step of controlling the three-phase passive PFC circuit to switch from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two designated phase lines in the three-phase phase lines, based on the operating parameters and a set threshold, includes:

[0054] If it is determined that each of the power supply current values ​​and / or the DC bus current values ​​is less than or equal to a set threshold, then the three-phase passive PFC circuit is controlled to switch from a first power supply state powered by three-phase phase lines to a second power supply state powered by two of the three-phase phase lines.

[0055] Here, based on the acquired operating parameters, if it is determined that the supply current value of each phase of the three-phase line is less than or equal to a set threshold, and / or the DC bus current value is less than or equal to a set threshold, then the electronic device is determined to enter a set load state. The three-phase passive PFC circuit is then controlled to switch from a first power supply state powered by the three-phase lines to a second power supply state powered by two designated phase lines. These two designated phase lines can supply power to two predetermined phase lines from the three-phase lines. For example, the power supply state can be switched by disconnecting a target phase line other than these two designated phase lines.

[0056] In one application example, a switching element can be connected to the target phase line. The control device switches the power supply state by controlling the conduction state of this switching element. For example, if the user selects power supply from phase lines A and B as the second power supply state, a switching element, such as a relay, can be set on phase line C to control the conduction state of this phase line; if the user selects power supply from phase lines A and C as the second power supply state, a switching element can be set on phase line B to switch the power supply state; if the user selects power supply from phase lines B and C as the second power supply state, a switching element can be set on phase line A to switch the power supply state.

[0057] Exemplarily, the method further includes:

[0058] The set threshold is determined based on the power loss values ​​of the electronic device at each operating current value in the first power supply state and the second power supply state.

[0059] The set threshold represents the critical value of the operating current where the power loss value under the second power supply state is less than the power loss value under the first power supply state.

[0060] Here, the power loss values ​​of each operating current value of the electronic device in the first power supply state and the second power supply state can be calculated and compared, and the set threshold value can be determined. The set threshold value represents the critical value of the operating current in which the power loss value in the second power supply state is less than the power loss value in the first power supply state. That is, by comparing the power loss values ​​of each operating current value, the critical value of the operating current in which the power loss value in the second power supply state is less than the power loss value in the first power supply state can be obtained, and the critical value of the operating current is used as the set threshold value. In this way, a reasonable basis can be provided for the switching of power supply states, thereby effectively reducing the power loss during the operation of the electronic device and helping to effectively improve the energy-saving effect of the electronic device.

[0061] Exemplarily, the method further includes:

[0062] In the second power supply state, if it is determined that the power supply current value and / or the DC bus current value are greater than the set threshold, the three-phase passive PFC circuit is controlled to switch from the second power supply state to the first power supply state.

[0063] Understandably, in the second power supply state, if the control device determines, based on the acquired operating parameters, that the power supply current value and / or the DC bus current value is greater than the set threshold, it indicates that the electronic equipment has exited the aforementioned set load state. Changing to three-phase power supply can further reduce power loss. The control device can control the switching elements on the target phase line to conduct, thereby switching back to the first power supply state.

[0064] Exemplarily, the method further includes:

[0065] Obtain the environmental parameters of the electronic device;

[0066] The operating power of the electronic device's electrical load is adjusted based on the environmental parameters.

[0067] Understandably, during the operation of electronic devices, the control device can also acquire environmental parameters of the electronic device and adjust the power consumption of the electronic device's electrical load based on these parameters. For example, taking an air conditioner as an example, the control device can acquire the ambient temperature and adjust the compressor's operating frequency based on the ambient temperature. In this way, the load state of the electronic device will change with the changes in environmental parameters, thereby achieving the overall energy-saving effect of the electronic device.

[0068] For example, the three-phase passive PFC circuit includes a protection circuit for preventing starting current surges. The protection circuit includes a first impedance branch and a second impedance branch. The first impedance branch is connected in parallel to a first phase line of the three-phase circuit, and the second impedance branch is connected in parallel to a second phase line of the three-phase circuit. Both the first and second impedance branches include a PTC thermistor. A first switching element for short-circuiting the first impedance branch is provided on the first phase line, and a second switching element for short-circuiting the second impedance branch is provided on the second phase line. The method further includes:

[0069] In response to the power-on command of the electronic device, both the first and second switching elements are turned off, so that the three-phase passive PFC circuit is in the third power supply state.

[0070] If it is determined that the DC bus voltage of the three-phase passive PFC circuit is greater than or equal to the set voltage value, then the first switching element and the second switching element are both turned on, so that the three-phase PFC circuit switches to the first power supply state.

[0071] To prevent damage to components from current surges during startup, this embodiment introduces a protection circuit into the three-phase passive PFC circuit. During startup, the first and second switching elements are disconnected, ensuring that the phase current of the first phase line is rectified by the first PTC thermistor in the first impedance branch, and the phase current of the second phase line is rectified by the second PTC thermistor in the second impedance branch. Since the PTC thermistor is temperature-sensitive, its resistance increases with increasing temperature as the current increases, effectively suppressing current surges during startup. Once the control device determines that the DC bus voltage of the three-phase passive PFC circuit is greater than or equal to a set voltage, it can confirm that the bus capacitor is fully charged and turn on both the first and second switching elements, switching the three-phase PFC circuit to the first power supply state. The third power supply state can be understood as a three-phase power supply state designed to avoid overcurrent surges.

[0072] For example, the step of switching the three-phase passive PFC circuit from a first power supply state powered by three-phase lines to a second power supply state powered by two selected phase lines of the three-phase lines includes:

[0073] The first switching element is controlled to open, and the first impedance branch is disconnected, so that the first phase line stops receiving power; or,

[0074] The second switching element is turned off, and the second impedance branch is disconnected, so that the second phase line stops supplying power.

[0075] In one application example, a third switching element controlled by a control device can be set in the first impedance branch. If it is necessary to switch to the second power supply state, the control device can control both the first and third switching elements to be disconnected, so that the first phase line stops supplying power.

[0076] In another application example, a third switching element controlled by a control device can be set in the second impedance branch. If it is necessary to switch to the second power supply state, the control device can control both the second and third switching elements to be disconnected, so that the second phase line stops supplying power.

[0077] The power supply control method for electronic devices according to an embodiment of this application will be described exemplarily below with reference to an application example.

[0078] In this application example, the electronic device is an air conditioner. Figure 4 and Figure 5 The diagram shows two three-phase passive PFC circuit power supply structures for an air conditioner in this application embodiment. The air conditioner includes a compressor 101 and a fan 201. The compressor 101 is driven by a first IPM (Intelligent Power Module) module 102, and the fan 201 is driven by a second IPM module 202. Figure 4 The three-phase passive PFC circuit shown has an AC reactor installed on each phase line of the three-phase AC side. Figure 5 The three-phase passive PFC circuit shown has a DC reactor on the DC side after three-phase rectification. The supply current of phase A is i. a The supply current value of phase B is i b The supply current value of phase C is i c The DC bus voltage value is U dc The DC bus current value is I dc .

[0079] It should be noted that the three-phase passive PFC circuit in this application embodiment incorporates a protection circuit to prevent starting current surges. This protection circuit includes a first impedance branch connected in parallel to the phase line of phase A and a second impedance branch connected in parallel to the phase line of phase B. A relay RY1 capable of short-circuiting the first impedance branch is installed on the phase line of phase A, and a relay RY2 capable of short-circuiting the second impedance branch is installed on the phase line of phase B. The first impedance branch includes a thermistor PTC1, and the second impedance branch includes a thermistor PTC2. A relay RY3 for on / off control is also installed on the first impedance branch. Relays RY1 and RY2 are normally open, and relay RY3 is normally closed.

[0080] Reference Figure 6 The power supply control method in this application embodiment includes the following steps:

[0081] Step 601: Power on the air conditioner.

[0082] Here, after the air conditioner is powered on, it can respond to the start-up command and start running.

[0083] In step 602, relays RY1 and RY2 are in the off state, and relay RY3 is in the on state.

[0084] In the initial stage of power-on startup of the air conditioner, normally open relays RY1 and RY2 are in the open state, while normally closed relay RY3 is in the closed state.

[0085] Step 603, the three-phase line supplies bus capacitor C o Charge.

[0086] Understandably, during the initial startup of the air conditioner, because relays RY1 and RY2 are in the open state and relay RY3 is in the closed state, the three-phase lines pass through the thermistor PTC1 on the first impedance branch and the thermistor PTC2 on the second impedance branch to supply power to the bus capacitor C. o Charging allows the PTC thermistor's characteristics to be utilized to effectively suppress the initial current surge during startup.

[0087] Step 604, determine if the DC bus voltage value U dc If the voltage is greater than the set value, return to step 602 if not, and proceed to step 605 if yes.

[0088] It is understandable that if the DC bus voltage value U dc If the voltage is less than or equal to the set voltage value, the protection circuit will continue to supply power to the bus capacitor C. o Charge until the DC bus voltage value U is reached. dc If the voltage exceeds the set value, proceed to step 605.

[0089] Step 605: Control relays RY1 and RY2 to turn on and control relay RY3 to turn off.

[0090] Here, control relays RY1 and RY2 are turned on and control relay RY3 is turned off, so that after the air conditioner starts successfully, the aforementioned first impedance branch and second impedance branch can be short-circuited to avoid energy consumption on the impedance branch and to achieve normal three-phase power supply to the air conditioner.

[0091] Step 606: The air conditioner is powered on by three phases.

[0092] It should be noted that during the operation of the air conditioner with three-phase power supply, the load state of the air conditioner will change. For example, it can switch from the initial full load operation state to the medium and small load operation state as the indoor ambient temperature gradually approaches the set temperature value. That is, the working power of the air conditioner compressor 101 can be adjusted by the first IPM module 102 and / or the working power of the fan 201 can be adjusted by the second IPM module 202.

[0093] Step 607, determine if the three-phase power supply current value i a i b i c ≤ Set threshold, or DC bus current value I dc If the threshold is set, return to step 606; otherwise, proceed to step 608.

[0094] Here, if the three-phase power supply current value i is determined... a i b i c ≤ Set threshold, or DC bus current value I dc If the threshold value is less than or equal to the set threshold, the air conditioner is determined to have entered the set load state. The three-phase passive PFC circuit can be controlled to switch from the first power supply state of three-phase power supply to the second power supply state of two-phase power supply in the three-phase power supply, i.e., step 608 is executed.

[0095] Step 608: Control relay RY1 is disconnected, and the air conditioner is in two-phase power supply operation mode.

[0096] Understandably, since both relays RY1 and RY3 are in the open state at this time, the power supply to phase A can be disconnected, that is, phase A stops supplying power, and the air conditioner is powered by phases B and C.

[0097] It should be noted that the motors of the air conditioner compressor 101 and / or fan 201 can be any of the following: AC asynchronous motor, AC synchronous motor, DC brushless motor (BLDC), permanent magnet synchronous motor (PMSM), etc., and this application embodiment does not limit this. The first IPM module 102 and / or the second IPM module 202 can be driven and controlled by SPWM (Sinusoidal Pulse Width Modulation) or SVPWM (Space Vector Pulse Width Modulation), and this application embodiment does not limit this.

[0098] For example, the three-phase supply current value i a i b i cThe current can be detected by a current transformer (CT), by sampling through a power resistor, or by a Hall current sensor circuit. This application does not limit the specific method used.

[0099] For example, the DC bus current value I dc The value can be estimated by the operating frequency and sampling current of the compressor motor and fan motor, or it can be obtained by sampling the power resistor or by direct detection through the Hall current sensor circuit. This application does not limit the specific method used.

[0100] In one application example, the set voltage value for the air conditioner is 280V, and the set threshold is 5A.

[0101] In order to implement the method of the embodiments of this application, the embodiments of this application also provide a power supply control device for an electronic device. The power supply control device for the electronic device corresponds to the power supply control method for the electronic device described above. The steps in the embodiments of the power supply control method for the electronic device described above are also fully applicable to the embodiments of the power supply control device for the electronic device.

[0102] like Figure 7 As shown, the power supply control device of the electronic device includes an acquisition module 701 and a control module 702. The acquisition module 701 is used to acquire the operating parameters of the three-phase passive PFC circuit during the operation of the electronic device; the control module 702 is used to control the three-phase passive PFC circuit to switch from a first power supply state powered by three-phase lines to a second power supply state powered by two selected phase lines among the three-phase lines, based on the operating parameters and a set threshold.

[0103] In some embodiments, the operating parameters include the supply current value of each phase line in the three-phase phase lines and / or the DC bus current value of the three-phase passive PFC circuit, and the control module 702 is specifically used for:

[0104] If it is determined that each of the power supply current values ​​and / or the DC bus current values ​​is less than or equal to a set threshold, then the three-phase passive PFC circuit is controlled to switch from a first power supply state powered by three-phase phase lines to a second power supply state powered by two of the three-phase phase lines.

[0105] In some embodiments, the control module 702 is further configured to:

[0106] The set threshold is determined based on the power loss values ​​of the electronic device at each operating current value in the first power supply state and the second power supply state.

[0107] The set threshold represents the critical value of the operating current where the power loss value under the second power supply state is less than the power loss value under the first power supply state.

[0108] In some embodiments, the control module 702 is further configured to:

[0109] In the second power supply state, if it is determined that the power supply current value and / or the DC bus current value are greater than the set threshold, the three-phase passive PFC circuit is controlled to switch from the second power supply state to the first power supply state.

[0110] In some embodiments, the acquisition module 701 is further configured to acquire environmental parameters of the electronic device; the control module 702 is further configured to adjust the operating power of the electrical load of the electronic device based on the environmental parameters.

[0111] In some embodiments, the three-phase passive PFC circuit includes a protection circuit for preventing starting current surges. The protection circuit includes a first impedance branch and a second impedance branch. The first impedance branch is connected in parallel to a first phase line of the three-phase phase lines, and the second impedance branch is connected in parallel to a second phase line of the three-phase phase lines. Both the first and second impedance branches include a PTC thermistor. A first switching element for short-circuiting the first impedance branch is provided on the first phase line, and a second switching element for short-circuiting the second impedance branch is provided on the second phase line. The control module 702 is further configured to:

[0112] In response to the power-on command of the electronic device, both the first and second switching elements are turned off, so that the three-phase passive PFC circuit is in the third power supply state.

[0113] If it is determined that the DC bus voltage of the three-phase passive PFC circuit is greater than or equal to the set voltage value, then the first switching element and the second switching element are both turned on, so that the three-phase PFC circuit switches to the first power supply state.

[0114] In some embodiments, switching the three-phase passive PFC circuit from a first power supply state powered by three-phase phase lines to a second power supply state powered by two selected phase lines of the three-phase phase lines includes:

[0115] The first switching element is controlled to open, and the first impedance branch is disconnected, so that the first phase line stops receiving power; or,

[0116] The second switching element is turned off, and the second impedance branch is disconnected, so that the second phase line stops supplying power.

[0117] In practical applications, the acquisition module 701 and the control module 702 can be implemented by the processor of the electronic device. Of course, the processor needs to run the computer program in memory to realize its functions.

[0118] It should be noted that the control device for the electronic device provided in the above embodiments is only illustrated by the division of the above-described program modules. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the control device for the electronic device provided in the above embodiments and the control method embodiments for the electronic device belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0119] Based on the hardware implementation of the above program modules, and in order to implement the method of the embodiments of this application, the embodiments of this application also provide an electronic device. Figure 8 The diagram shows only an exemplary structure of the electronic device, not the entire structure; implementation is possible as needed. Figure 8 The structure shown may be part or all of the structure.

[0120] like Figure 8 As shown, the electronic device 800 provided in this application embodiment includes at least one processor 801, a memory 802, and a user interface 803. The various components in the electronic device 800 are coupled together via a bus system 804. It can be understood that the bus system 804 is used to implement communication between these components. In addition to a data bus, the bus system 804 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 8 The general labeled all buses as Bus System 804.

[0121] The user interface 803 may include a monitor, keyboard, mouse, trackball, click wheel, buttons, touchpad, or touch screen.

[0122] The memory 802 in this embodiment is used to store various types of data to support the operation of the electronic device. Examples of such data include any computer program used to operate on the electronic device.

[0123] The control method for an electronic device disclosed in this application can be applied to or implemented by a processor 801. The processor 801 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the control method for the electronic device can be completed by integrated logic circuits in the hardware of the processor 801 or by instructions in software form. The processor 801 can be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 801 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. A general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of this application can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software modules can be located in a storage medium, specifically a memory 802. The processor 801 reads information from the memory 802 and, in conjunction with its hardware, completes the steps of the control method for the electronic device provided in the embodiments of this application.

[0124] In an exemplary embodiment, the electronic device may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0125] It is understood that memory 802 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0126] The electronic device in this application embodiment can be an air conditioner. It should be noted that the electronic device in this application embodiment can also be other devices that apply a three-phase passive PFC circuit, such as, but not limited to, electronic products such as heaters and air purifiers.

[0127] In an exemplary embodiment, this application also provides a computer program product, including a computer program that can be executed by a processor 801 to perform the steps described in the method of this application embodiment.

[0128] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0129] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0130] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power supply control method for an electronic device, characterized in that, The electronic device includes: an electrical load powered by a three-phase passive PFC circuit, and the method includes: Obtain the operating parameters of the three-phase passive PFC circuit during the operation of the electronic device; Based on the operating parameters and set thresholds, the three-phase passive PFC circuit is controlled to switch from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two phase lines set among the three phase lines.

2. The method according to claim 1, characterized in that, The operating parameters include the supply current value of each phase line in the three-phase phase lines and / or the DC bus current value of the three-phase passive PFC circuit. The step of controlling the three-phase passive PFC circuit to switch from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two designated phase lines in the three-phase phase lines, based on the operating parameters and a set threshold, includes: If it is determined that each of the power supply current values ​​and / or the DC bus current values ​​is less than or equal to a set threshold, then the three-phase passive PFC circuit is controlled to switch from a first power supply state powered by three-phase phase lines to a second power supply state powered by two of the three-phase phase lines.

3. The method according to claim 2, characterized in that, The method further includes: The set threshold is determined based on the power loss values ​​of the electronic device at each operating current value in the first power supply state and the second power supply state. The set threshold represents the critical value of the operating current where the power loss value under the second power supply state is less than the power loss value under the first power supply state.

4. The method according to claim 2, characterized in that, The method further includes: In the second power supply state, if it is determined that the power supply current value and / or the DC bus current value are greater than the set threshold, the three-phase passive PFC circuit is controlled to switch from the second power supply state to the first power supply state.

5. The method according to claim 1, characterized in that, The method further includes: Obtain the environmental parameters of the electronic device; The operating power of the electronic device's electrical load is adjusted based on the environmental parameters.

6. The method according to claim 1, characterized in that, The three-phase passive PFC circuit includes a protection circuit for preventing starting current surges. The protection circuit includes a first impedance branch and a second impedance branch. The first impedance branch is connected in parallel to the first phase line of the three-phase circuit, and the second impedance branch is connected in parallel to the second phase line of the three-phase circuit. Both the first and second impedance branches include a PTC thermistor. A first switching element for short-circuiting the first impedance branch is provided on the first phase line, and a second switching element for short-circuiting the second impedance branch is provided on the second phase line. The method further includes: In response to the power-on command of the electronic device, both the first and second switching elements are turned off, so that the three-phase passive PFC circuit is in the third power supply state. If it is determined that the DC bus voltage of the three-phase passive PFC circuit is greater than or equal to the set voltage value, then the first switching element and the second switching element are both turned on, so that the three-phase PFC circuit switches to the first power supply state.

7. The method according to claim 6, characterized in that, The control of the three-phase passive PFC circuit to switch from a first power supply state (powered by the three-phase phase lines) to a second power supply state (powered by two designated phase lines) includes: The first switching element is controlled to open, and the first impedance branch is disconnected, so that the first phase line stops receiving power; or, The second switching element is turned off, and the second impedance branch is disconnected, so that the second phase line stops supplying power.

8. A power supply control device for an electronic device, characterized in that, The electronic device includes: an electrical load powered by a three-phase passive PFC circuit, and the power supply control device includes: The acquisition module is used to acquire the operating parameters of the three-phase passive PFC circuit during the operation of the electronic device; The control module is used to control the three-phase passive PFC circuit to switch from a first power supply state powered by the three-phase phase lines to a second power supply state powered by two phase lines set among the three phase lines, based on the operating parameters and the set threshold.

9. An electronic device, characterized in that, The electronic device includes: an electrical load powered by a three-phase passive PFC circuit; the electronic device further includes: a processor and a memory for storing a computer program capable of running on the processor, wherein... The processor, when running a computer program, performs the steps of the method according to any one of claims 1 to 7.

10. The electronic device according to claim 9, characterized in that, The electronic device is an air conditioner.

11. A computer storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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