CN115800868A - Control circuit for reducing upper electric pulse current and control method thereof - Google Patents
Control circuit for reducing upper electric pulse current and control method thereof Download PDFInfo
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- CN115800868A CN115800868A CN202211661575.9A CN202211661575A CN115800868A CN 115800868 A CN115800868 A CN 115800868A CN 202211661575 A CN202211661575 A CN 202211661575A CN 115800868 A CN115800868 A CN 115800868A
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- 239000003990 capacitor Substances 0.000 claims abstract description 64
- 238000003079 width control Methods 0.000 claims abstract description 27
- 230000005611 electricity Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
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- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000003111 delayed effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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Abstract
The invention discloses a control circuit for reducing upper electric pulse current and a control method thereof, and the control circuit comprises an MCU motor driver, a DC-DC power supply loop, a pulse width control circuit and a motor drive control power supply loop, wherein the pulse width control circuit powers on a capacitor on a main loop in a controller; the motor drive control power supply loop is provided with a relay normally open contact and a bus capacitor, and the pulse width control circuit is used for electrifying the capacitor on the main loop in the controller. The motor drive control power supply circuit is used for supplying electric energy to the power part when the motor runs. When the driver is powered on, the pulse width control circuit is controlled by the pulse width control circuit to charge the bus capacitor with a certain pulse width, when the voltage of the capacitor in the motor drive control power supply loop reaches more than 90% of the power supply voltage, the RLY relay control switch is closed, and the motor drive control power supply loop is connected to the power supply.
Description
Technical Field
The invention relates to a controller, in particular to a control circuit for reducing upper electric pulse current and a control method thereof, which are used in controller products such as electric motorcycles, large-sized mowers, beach vehicles, electric forklifts and the like.
Background
Generally, for some battery-powered devices such as high-power old-aged mobility vehicles and electric forklifts, the motor driving part of a battery and a driver needs to be cut off based on safety considerations. Therefore, when the power part of the motor or the driver is abnormal, the protection can be started timely and effectively to prevent the fault from spreading. It is common practice to add a large current contactor or a large fuse between the battery and the controller, but when the power is turned on, a large current pulse surge phenomenon occurs. In order to prevent the contacts or fuses from being damaged by the impact of the high-current pulse during power-on, the fuses or the contacts with larger sizes are usually selected, which undoubtedly causes the delay of the protection function and the increase of the system cost.
Disclosure of Invention
The invention provides a control circuit and a control method thereof, aiming at solving the problems that the prior controller products such as an electric motor, a large mower, a beach vehicle, an electric forklift and the like are easy to cause damage of a contactor or a fuse due to large impact current of power-on pulse, or have the defects of delayed protection function, high cost of a protection system and the like, the control circuit can effectively reduce the impact pulse phenomenon of the current when a driver is powered on, can reduce the current of the power-on pulse, has quick protection response and low protection and control cost, and reduces the current of the power-on pulse
The invention adopts the following specific technical scheme to solve the technical problems: a control system for reducing upper electric pulse current comprises an MCU controller and a DC-DC power supply loop, and is characterized in that: the controller also comprises a pulse width control circuit and a motor drive control power supply circuit, wherein the pulse width control circuit is used for electrifying a bus capacitor on a main circuit in the controller, and the motor drive control power supply circuit is used for supplying electric energy to a motor control power part when the motor runs; a relay normally open contact and a bus capacitor are arranged on the motor drive control power supply loop, one end of the relay normally open contact is electrically connected with a1 st triode emitter, a1 st triode collector is connected with a1 st diode in series, a1 st diode anode is electrically connected with a1 st triode collector, a1 st diode cathode is electrically connected with the other end of the relay normally open contact after being connected with a1 st resistor in series, and meanwhile, the other end of the relay normally open contact is electrically connected with a bus capacitor positive end and an MCU controller in parallel respectively; the base of the No. 1 triode is electrically connected with the emitter of the No. 2 triode, and the base of the No. 2 triode is electrically connected with the MCU controller; the DC-DC power supply loop provides a DC-DC power supply for the MCU controller, the pulse width control circuit and the motor drive control power supply loop. The pulse width control circuit and the motor drive control power supply circuit are designed, when a driver is powered on, the pulse width control circuit is controlled to charge a bus capacitor with a certain pulse width, when the voltage of the capacitor in the motor drive control power supply circuit reaches a set power supply voltage proportion, a relay normally open contact switch is closed, the motor drive control power supply circuit is connected to a power supply, the phenomenon of current impact pulse when the driver is powered on can be effectively reduced, the upper pulse current can be reduced, the protection response is fast, and the protection control cost is low.
Preferably, the relay control circuit adopted by the normally open contact of the relay comprises a relay coil control circuit and circuits at two ends of the normally open contact of the relay, wherein the relay coil control circuit adopts the structure that one end of a coil is connected with the anode of a2 nd diode in series, the cathode of the 2 nd diode is electrically connected with the collector of a3 rd triode, the base of the 3 rd triode is electrically connected with the signal driving end of the relay after being connected with a2 nd resistor in series, and the base of the 3 rd triode is electrically connected with the emitter of the 3 rd triode after being connected with a5 th resistor in series and is electrically connected with a circuit power supply; the 2 nd diode positive pole is connected with circuit power ground after 4 th resistance and 3 rd resistance in series in proper order, and the series node of 4 th resistance and 3 rd resistance is connected with relay coil signal detection end electricity, and the 4 th resistance is connected to the +3.3V power after the series node of 3 rd resistance and 3 rd resistance are connected with 3 rd diode positive pole electricity simultaneously, and the 3 rd resistance both ends are parallelly connected 5 th electric capacity, and the 4 th diode is parallelly connected at relay coil both ends, and the 4 th diode positive pole is connected with relay coil power supply electricity. The simple, reliable and effective trigger control of the normally open contact of the relay is improved.
Preferably, the two-end circuit of the normally open contact of the relay in the relay control circuit adopted by the normally open contact of the relay adopts the mode that one end of the normally open contact of the relay is electrically connected with the power supply voltage end, the power supply voltage end is electrically connected with the emitting electrode of the 1 st triode after being serially connected with the anode of the 5 th diode, the collecting electrode of the 1 st triode is electrically connected with the other end of the normally open contact of the relay after being serially connected with the 1 st diode and the 1 st resistor in sequence, the anode of the 1 st diode is electrically connected with the collecting electrode of the 1 st triode, the base of the 1 st triode is electrically connected with the collecting electrode of the 2 nd triode after being serially connected with the 7 th resistor, the base of the 2 nd triode is electrically connected with the charging signal of the capacitor after being serially connected with the 8 th resistor, and a plurality of electrolytic capacitors are parallelly connected between the other end of the normally open contact of the relay and the circuit power ground. The access control of the normally open contact of the relay is improved, and the effectiveness is simple, reliable and stable.
Another object of the present invention is to provide a control method for a current control circuit for reducing power-on pulse, characterized in that: comprises the following control method
A1. When the MCU motor driver is powered on, the control system for reducing the upper electric pulse current controls the pulse width control circuit to charge the bus capacitor with a certain pulse width through the pulse width control circuit, when the voltage of the bus capacitor in the motor drive control power supply loop reaches more than 90% of the power supply voltage, the normally open contact of the relay is closed, and the motor drive control power supply loop is connected to a power supply;
A2. when the MCU motor driver is powered on, the normally open contact of the relay RLY is in a disconnected state, the 1 st triode is also in a disconnected state, and no electric quantity exists on the bus capacitor C;
a3, supplying power to the MCU controller by the DC-DC power supply loop, starting the MCU motor driver to work, and detecting the voltage on the bus capacitor C;
A4. if no voltage is detected in the step A3, the MCU motor driver PWM signal controls the opening of a1 st triode and a2 nd triode, the bus capacitor is charged after the pulse width small current controlled by the PWM pulse width passes through the 1 st triode, a1 st diode and a1 st resistor, the 1 st diode ensures the unidirectional circulation of the current, and the 1 st resistor limits the size of the current flowing into the bus;
A5. when the MCU controller detects that the voltage of the bus capacitor reaches 90% of the power supply voltage, the MCU motor driver controls the relay to close the normally open contact of the relay, and large current pulses cannot be formed on a motor drive control power supply loop due to small voltage difference between two ends of the relay contact;
A6. after the normally open contact of the relay is closed, the energy on the bus capacitor and the motor drive control power supply loop is provided through the contact access after the relay is closed;
A7. after the normally open contact of the relay is closed and switched on, the MCU motor driver controls the 2 nd triode and the 1 st triode to be disconnected, the current circulation of the A4 step is cut off, the current circulation of the A6 step can only be kept, the electric quantity on the bus capacitor is ensured to be slowly full of with a certain slope, the impact on the power supply part can not be caused, and the impact on the power supply voltage when the MCU motor driver is powered on is weakened through reducing the pressure difference.
The electric pulse current is effectively controlled and reduced, the problem that the pressure difference of the driver is large when the motor driver is electrified is effectively solved, the impact on the voltage of a power supply source is weakened by reducing the pressure difference, and the motor driver is effectively protected from being damaged by current impact.
The invention has the beneficial effects that: the patent provides a scheme for reducing power-on current pulse, which can effectively reduce the current pulse phenomenon during power-on. This patent has designed two parallel circuit, a pulse width control circuit, a motor drive control power supply circuit. The pulse width control circuit is used for electrifying the capacitor on the main loop in the controller. The motor drive control power supply circuit is used for supplying electric energy to the power part when the motor runs. When the driver is powered on, the pulse width control circuit is controlled by the pulse width control circuit to charge the bus capacitor with a certain pulse width, when the voltage of the capacitor in the motor drive control power supply loop reaches more than 90% of the power supply voltage, the RLY relay control switch is closed, and the motor drive control power supply loop is connected to the power supply.
Description of the drawings:
fig. 1 is a schematic diagram of a control system for a method of reducing a power-on pulse current according to the present invention.
Fig. 2 is a schematic diagram of the circuit structure of the relay circuit in the power-on pulse current reduction method of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description.
Example 1
In the embodiment shown in fig. 1 and 2, a control system for reducing an upper electric pulse current includes an MCU controller and a DC-DC power supply circuit, and further includes a pulse width control circuit (see a circuit shown by arrow a in fig. 1) for powering a bus capacitor C on a main circuit inside the controller, and a motor drive control power supply circuit (see a circuit shown by arrow B in fig. 1) for providing electric energy to a motor control power section when the motor is running; a relay normally open contact and a bus capacitor are arranged on the motor drive control power supply loop, one end of the relay normally open contact is electrically connected with a1 st triode Q1 emitting electrode, a1 st triode Q1 collecting electrode is connected with a1 st diode D1 in series, a1 st diode anode is electrically connected with a1 st triode Q1 collecting electrode, a1 st diode D1 cathode is electrically connected with the other end of the relay RLY normally open contact after being connected with a1 st resistor R1 in series, and meanwhile, the other end of the relay RLY normally open contact is electrically connected with a bus capacitor C positive electrode end and an MCU controller in parallel respectively; the base electrode of the 1 st triode Q1 is electrically connected with the emitting electrode of the 2 nd triode Q2, and the base electrode of the 2 nd triode is electrically connected with the MCU controller; the DC-DC power supply loop provides a DC-DC power supply for the MCU controller, the pulse width control circuit and the motor drive control power supply loop.
The relay control circuit adopted by the normally open contact of the relay comprises a relay coil control circuit and circuits at two ends of the normally open contact of the relay, wherein the relay coil control circuit adopts a mode that one end 3 of a coil is connected with the anode of a2 nd diode D2 in series, the cathode of the 2 nd diode D2 is electrically connected with the collector of a3 rd triode Q3, the base of the 3 rd triode Q3 is electrically connected with a2 nd resistor in series and then is electrically connected with a relay signal driving end RLY-DRV (RLY is the English abbreviation of the relay, and DRV is the English abbreviation of the drive), and the base of the 3 rd triode Q3 is electrically connected with the emitting electrode of the 3 rd triode Q3 and is electrically connected with a circuit power ground GND after being connected with a5 th resistor R5 in series; the anode of the 2 nd diode D2 is sequentially connected with a4 th resistor R4 and a3 rd resistor R3 in series and then electrically connected with a circuit power supply, the serial node of the 4 th resistor R4 and the 3 rd resistor R3 is electrically connected with a relay coil signal detection end RLY-DECT (RLY is an English abbreviation of a relay, DECT represents the detection meaning and is used for detecting a relay coil), meanwhile, the serial node of the 4 th resistor and the 3 rd resistor is electrically connected with the anode of the 3 rd diode D3 and then connected to a +3.3V power supply, the two ends of the 3 rd resistor R3 are connected with a5 th capacitor C5 in parallel, the two ends of the relay coil are connected with the 4 th diode D4 in parallel, and the 4 th diode anode is electrically connected with a 14.3V power supply of the relay coil.
The circuit of relay normally open contact both ends in the relay control circuit that the relay normally open contact adopted adopts and is connected for relay normally open contact one end (see fig. 2 RLY in 7, 8, 9) and power supply voltage end B + electricity, power supply voltage end B + is connected with triode Q1 projecting pole electricity after 5 diode D5 positive pole of establishing ties, 1 triode Q1 collecting electrode is connected with relay normally open contact other end (see fig. 2 RLY in 4, 5, 6 ends) electricity after 1 diode D1 and 1 resistance R1 of establishing ties in proper order, 1 diode D1 positive pole is connected with 1 triode Q1 collecting electrode electricity, 1 triode Q1 base is connected with 2 triode Q2 collecting electrode electricity after 7 resistance R7 is established ties, 2 triode Q2 base is connected with electric capacity charge signal PWM electricity after 8 resistance R8 is established ties, a plurality of electrolytic capacitors of parallelly connected between the relay normally open contact other end and the circuit power ground. The electrolytic capacitors connected in parallel are formed by connecting a1 st electrolytic capacitor C1, a2 nd electrolytic capacitor C2, a3 rd electrolytic capacitor C3 and a4 th electrolytic capacitor C4 in parallel, and the capacitance parameter of each electrolytic capacitor is 330uf/100V. In the circuit of fig. 2, a plurality of electrolytic capacitors are connected in parallel to achieve the purpose of increasing the capacitance value, and the larger the capacitance value is, the better the filtering effect can be provided when the motor runs; correspondingly, in the schematic circuit diagram of fig. 1, a bus capacitor C is used instead, so as to illustrate the structure of the whole circuit.
Example 2:
in the embodiment shown in fig. 1 and 2, a control method for reducing the power-on pulse current control circuit includes the following control methods:
A1. when the MCU motor driver is powered on, the pulse width control circuit is controlled by the pulse width control circuit to charge the bus capacitor with a certain pulse width, when the voltage of the bus capacitor in the motor drive control power supply loop reaches more than 90% of the power supply voltage B1+, the normally open contact of the relay is closed, and the motor drive control power supply loop is connected to a power supply;
A2. when the MCU motor driver is powered on, the normally open contact of the relay RLY is in a disconnected state, the 1 st triode is also in a disconnected state, and no electric quantity exists on the bus capacitor C;
a3, supplying power to the MCU controller by the DC-DC power supply loop, starting the MCU controller to work, detecting the voltage on the bus capacitor C, and sampling the voltage of the capacitor;
A4. if no voltage is detected in the step A3, the MCU motor driver PWM signal controls the 1 st triode and the 2 nd triode to be opened, the bus capacitor is charged by the pulse width small current controlled by the PWM pulse width through the 1 st triode, the 1 st diode and the 1 st resistor, the 1 st diode ensures the unidirectional circulation of current, and the 1 st resistor limits the size of the current flowing into the bus;
A5. when the MCU motor driver detects that the voltage of the bus capacitor reaches 90% of the power supply voltage, the MCU controller controls the relay to close the normally open contact of the relay, and large current pulses cannot be formed on a motor drive control power supply loop due to small voltage difference between two ends of the relay contact;
A6. after the normally open contact of the relay is closed, the energy on the bus capacitor and the motor drive control power supply loop is provided through the contact access after the relay is closed;
A7. after the normally open contact of the relay is closed and switched on, the MCU motor driver controls the 2 nd triode and the 2 th triode of the 1 st triode to be disconnected, the current circulation of the A4 step is cut off, the current circulation of the A6 step can only be kept, the electric quantity on the bus capacitor is ensured to be slowly filled with a certain slope, the impact on the power supply part can not be caused, and the impact on the power supply voltage when the MCU motor driver is powered on is weakened through reducing the pressure difference.
During the use, when motor drive was electrified, relay normally open contact switch RLY was in the off-state, and 1 st triode Q1 also was in the off-state, had not had the electric quantity on the bus capacitor C on the motor drive control power supply circuit. The MCU motor driver supplies power through the DC-DC power supply circuit, starts to work and detects the voltage on the main circuit bus capacitor C. When no voltage is detected, the MCU motor driver controls the 1 st triode Q1 and the 2 nd triode Q2 to be opened through PWM signals, current charges the bus capacitor through the pulse width control circuit, the 1 st diode D1 ensures the unidirectional circulation of the current, and the 1 st resistor R1 and the PWM limit the size of the current flowing into the bus capacitor C. When MCU motor driver detected that bus capacitor C voltage reached power voltage 90%, MCU control RLY relay for the normally open contact of relay is closed, because the voltage difference on relay both sides is very little, can not form big current pulse on the bus this moment. And after the closing, the bus capacitor C and the energy on the motor drive control power supply loop are provided by the motor drive control power supply loop. After the contact of the RLY relay is connected, the MCU controls Q2 and Q1 to be disconnected, the pulse width control circuit is cut off, and only a motor drive control power supply loop is reserved.
The foregoing summary and structure are provided to explain the principles, general features, and advantages of the product and to enable others skilled in the art to understand the invention. The foregoing examples and description have been presented to illustrate the principles of the invention and are intended to provide various changes and modifications within the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A control system for reducing upper electrical pulse current, comprising an MCU motor driver and a DC-DC power supply loop, characterized in that: the controller also comprises a pulse width control circuit and a motor drive control power supply circuit, wherein the pulse width control circuit is used for electrifying a bus capacitor on a main circuit in the controller, and the motor drive control power supply circuit is used for supplying electric energy to a motor control power part when the motor runs; a relay normally open contact and a bus capacitor are arranged on the motor drive control power supply loop, one end of the relay normally open contact is connected with a5 th diode in series and then is electrically connected with a1 st triode emitter, a1 st triode collector is connected with a1 st diode in series, the anode of the 1 st diode is electrically connected with the 1 st triode collector, the cathode of the 1 st diode is connected with a1 st resistor in series and then is electrically connected with the other end of the relay normally open contact, and meanwhile, the other end of the relay normally open contact is connected with the positive end of the bus capacitor and the MCU controller in parallel and respectively; the base electrode of the 1 st triode is connected to the emitter electrode of the 2 nd triode, and the base electrode of the 2 nd triode is connected with the MCU controller; the DC-DC power supply loop provides a DC-DC power supply for the MCU controller, the pulse width control circuit and the motor drive control power supply loop.
2. The control system for reducing an up-pulse current according to claim 1, wherein: the relay control loop adopted by the normally open contact of the relay comprises a relay coil control circuit and circuits at two ends of the normally open contact of the relay, wherein the relay coil control circuit adopts the mode that one end of a coil is connected with the anode of a2 nd diode in series, the cathode of the 2 nd diode is electrically connected with the collector of a3 rd triode, the base of the 3 rd triode is electrically connected with the signal driving end of the relay after being connected with a2 nd resistor in series, and the base of the 3 rd triode is electrically connected with the emitter of the 3 rd triode after being connected with a5 th resistor in series and is electrically connected with a circuit power supply; the anode of the 2 nd diode is sequentially connected with the 4 th resistor and the 3 rd resistor in series and then electrically connected with a circuit power supply, the series node of the 4 th resistor and the 3 rd resistor is electrically connected with the signal detection end of the relay coil, meanwhile, the series node of the 4 th resistor and the 3 rd resistor is electrically connected with the anode of the 3 rd diode and then connected to a +3.3V power supply, the two ends of the 3 rd resistor are connected with the 5 th capacitor in parallel, the two ends of the relay coil are connected with the 4 th diode in parallel, and the anode of the 4 th diode is electrically connected with the power supply of the relay coil.
3. A control system for reducing an up-pulse current according to claim 2, wherein: the relay normally open contact both ends circuit in the relay control circuit that the relay normally open contact adopted adopts and is connected with the supply voltage end electricity for relay normally open contact one end, supply voltage end is connected with 1 triode projecting pole electricity after establishing ties 5 diode positive pole, 1 st triode collecting electrode is connected with the relay normally open contact other end electricity after establishing ties 1 diode and 1 st resistance in proper order, 1 st diode positive pole is connected with 1 st triode collecting electrode electricity, 1 st triode base is connected with the 7 th triode collecting electrode electricity after establishing ties 7 resistance and is connected with 2 nd triode collecting electrode electricity, 2 nd triode base is connected with the 8 th resistance after establishing ties 8 resistance and is connected with the electric capacity charge signal electricity, a plurality of electrolytic capacitor that connect in parallel between the relay normally open contact other end and the circuit power ground.
4. A control method for reducing a power-on pulse current control circuit is characterized in that: comprises the following control method
A1. The control system for reducing the current of the upper electric pulse according to any one of claims 1 to 3, when the MCU motor driver is powered on, the pulse width control circuit is controlled by the pulse width control circuit to charge the bus capacitor with a certain pulse width, and when the voltage of the bus capacitor in the motor drive control power supply loop reaches above 90% of the power supply voltage, the normally open contact of the relay is closed, and the motor drive control power supply loop is connected to the power supply;
A2. when the MCU motor driver is powered on, the normally open contact of the relay RLY is in a disconnected state, the 1 st triode is also in a disconnected state, and no electric quantity exists on the bus capacitor C;
a3. The DC-DC power supply loop supplies power to the MCU motor driver, the MCU motor driver starts to work, and the voltage on the bus capacitor C is detected;
A4. if no voltage is detected in the step A3, the MCU motor driver PWM signal controls the opening of a1 st triode and a2 nd triode, the bus capacitor is charged after the pulse width small current controlled by the PWM pulse width passes through the 1 st triode, a1 st diode and a1 st resistor, the 1 st diode ensures the unidirectional circulation of the current, and the 1 st resistor limits the size of the current flowing into the bus;
A5. when the MCU motor driver detects that the voltage of the bus capacitor reaches 90% of the power supply voltage, the MCU controller controls the relay to close the normally open contact of the relay, and large current pulses cannot be formed on a motor drive control power supply loop due to small voltage difference between two ends of the relay contact;
A6. after the normally open contact of the relay is closed, the energy on the bus capacitor and the motor drive control power supply loop is provided through the contact access after the relay is closed;
A7. after the normally open contact of the relay is closed and switched on, the MCU controller controls the 2 nd triode and the 1 st triode to be disconnected, the current circulation of the step A4 is cut off, the current circulation of the step A6 can only be kept, the electric quantity on the bus capacitor is ensured to be slowly filled with a certain slope, the impact on the power supply part is avoided, and the impact on the power supply voltage when the MCU motor driver is powered on is weakened through reducing the pressure difference.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211661575.9A CN115800868A (en) | 2022-12-23 | 2022-12-23 | Control circuit for reducing upper electric pulse current and control method thereof |
| PCT/CN2023/139716 WO2024131749A1 (en) | 2022-12-23 | 2023-12-19 | Control circuit for reducing power-on pulse current and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211661575.9A CN115800868A (en) | 2022-12-23 | 2022-12-23 | Control circuit for reducing upper electric pulse current and control method thereof |
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| CN115800868A true CN115800868A (en) | 2023-03-14 |
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| CN202211661575.9A Pending CN115800868A (en) | 2022-12-23 | 2022-12-23 | Control circuit for reducing upper electric pulse current and control method thereof |
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| CN (1) | CN115800868A (en) |
| WO (1) | WO2024131749A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131749A1 (en) * | 2022-12-23 | 2024-06-27 | 浙江联宜电机有限公司 | Control circuit for reducing power-on pulse current and control method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2591055C1 (en) * | 2015-02-25 | 2016-07-10 | Общество с ограниченной ответственностью "Научно-производственный центр "Судовые электротехнические системы" (ООО "НПЦ "СЭС") | Frequency converter |
| CN107317368A (en) * | 2017-06-29 | 2017-11-03 | 湖北航天技术研究院总体设计所 | A kind of microminiature pre-charging device and pre-charge method |
| CN107645268A (en) * | 2017-08-23 | 2018-01-30 | 上海华希软件科技有限公司 | Low-speed electronic vehicle controller power-off protecting circuit |
| CN210007418U (en) * | 2019-03-14 | 2020-01-31 | 吉利汽车研究院（宁波）有限公司 | A high-voltage pre-charging device |
| CN110971175A (en) * | 2019-12-02 | 2020-04-07 | 珠海格力电器股份有限公司 | Strong-current electrifying circuit, control method and servo driver |
| CN212908984U (en) * | 2020-07-16 | 2021-04-06 | 合肥同智机电控制技术有限公司 | Direct-current high-voltage pre-charge module driving and all-time short-circuit protection circuit |
| CN115800868A (en) * | 2022-12-23 | 2023-03-14 | 浙江联宜电机有限公司 | Control circuit for reducing upper electric pulse current and control method thereof |
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2022
- 2022-12-23 CN CN202211661575.9A patent/CN115800868A/en active Pending
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2023
- 2023-12-19 WO PCT/CN2023/139716 patent/WO2024131749A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131749A1 (en) * | 2022-12-23 | 2024-06-27 | 浙江联宜电机有限公司 | Control circuit for reducing power-on pulse current and control method therefor |
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| WO2024131749A1 (en) | 2024-06-27 |
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