244 results about "Hybrid type" patented technology

The disclosure relates to hybrid unmanned aerial vehicle (UAV) having vertical take-off and landing (VTOL) capabilities. Specifically, the disclosure relates to a stable hybrid fixed angle rotor arrays UAV having VTOL capabilities with hovering capabilities using rotors and cruising using fixed wing.

The invention relates to a hybrid supercapacitor energy storage type converter based on an H bridge and an operation method thereof, and the energy storage type converter comprises an upper bridge arm part and a lower bridge arm part. Each of the upper bridge arm part and the lower bridge arm part comprises three bridge arms, and each bridge arm is formed by connecting n H-bridge sub-modules and a bridge arm inductor in series; the upper bridge arm part is connected with a direct current bus, and the lower bridge arm part is connected with a grounding wire; the H-bridge sub-module comprises four switch elements and an energy storage unit, the energy storage unit is a hybrid super capacitor, the four switch elements form an H-bridge structure, and the hybrid super capacitor is connected to the two ends of the H-bridge structure in parallel. According to the invention, the dual functions of energy storage and current conversion in the AC-DC interconnected power grid can be realized under the cooperation of the control strategy, and various operation requirements in different scenes can be met.

The invention relates to a method for operating a hybrid combination heating appliance (200) for tempering a heating water flow (1) and a domestic hot water flow (2). A heat generator (206) and / or a heat pump heat exchanger (202) connected in series with it in a heating water circuit (208) temper the heating water flow (1), wherein the heat pump heat exchanger (202) can be connected to a heat pump (300) on the secondary side. The heating water flow (1) flows into a connectable, building-side section of a heating water circuit (400) or into a hydraulically parallel bypass (214) of the hybrid combination heating appliance (200) with a domestic hot water heat exchanger (216), wherein a valve device (220) directs the heating water flow (1) into the heating water circuit (400) or into the bypass (214).It is proposed that a control unit (204) detects a risk of icing at the heat pump heat exchanger (202) and / or at another heat exchanger (308) of the heat pump (300) and switches the valve assembly (220) depending on the detected risk of icing so that the heating water flow (1), in particular coming from the heat generator (206), flows through the bypass (214) and the heat pump heat exchanger (202). The heating water flow (1) is in particular greater than or equal to a predefinable minimum flow rate.

The invention discloses a high-temperature-stripping-resistant epoxy structural adhesive as well as a preparation method and application thereof, and belongs to the technical field of high-performance composite materials. The epoxy structural adhesive comprises bisphenol A type epoxy resin, novolac epoxy resin, polysiloxane-polyurethane modified epoxy resin, core-shell modified epoxy resin, PEEK ultrafine powder and other components, and through mutual cooperation of all the components, the problems that in a high-temperature service environment, the adhesive layer modulus of traditional adhesive is rapidly attenuated, and a bonding interface is prone to failure are solved; the epoxy structural adhesive provided by the invention has both rapid curing and heat resistance, is stable in interface bonding, has the highest modulus of 1.28 GPa at 80 DEG C, the highest peel strength of 7.8 N / mm at 80 DEG C, and a damage mode of cohesion or high-proportion mixed damage, and is especially suitable for structural bonding requirements of harsh scenes such as peripheral structures of automobile engines, high-temperature areas of electronic equipment and the like.

The invention discloses a hybrid central metabolic network chassis cell with both carbon atom economy and energy generation pathway as well as a construction method and application of the hybrid central metabolic network chassis cell, and belongs to the technical field of genetic engineering and microorganisms. The Escherichia coli central metabolic network is reconstructed, so that the Escherichia coli central metabolic network has a carbon sequestration module and an energy generation module at the same time. The carbon sequestration module continues to fix CO2 while avoiding CO2 release caused by pyruvic acid decarboxylation, the highest carbon yield can reach 133%, the carbon yield exceeds that of an NOG pathway reported only from the perspective of no CO2 release, and the carbon yield is two times that of a natural glycolysis pathway. And the direct product of the constructed mixed type central metabolic network is acetyl coenzyme A, and the acetyl coenzyme A contains an energy generation module, so that the chassis cell provided by the invention can meet the synthesis requirements of acetyl coenzyme A derivatives with high or low required reducing power, and has universality.

A hybrid electric vehicle (HEV) includes an internal combustion engine and a motor / generator configured to drive the engine or be driven by the engine to generate electricity to charge a high voltage (HV) battery and / or drive an electric traction motor. The HEV includes an exhaust system, a HV system electrically coupling the HV battery and the electric traction motors, and a control system including a controller for monitoring an underhood environment of the HEV and performing a cooling operation to cool the exhaust system. The controller is programmed to determine if a temperature of the underhood environment, the internal combustion engine, and / or the exhaust system is above a predetermined threshold indicating a potential degradation of HV system performance, and operate the internal combustion engine in fuel shut-off to generate a flow of air to the exhaust system for cooling of the exhaust system to thereby cool the HV system.

The invention discloses a position-sensorless control method for double three-phase synchronous reluctance motors, and relates to the technical field of motor control. Establishing a motor mathematical model, and performing vector space decoupling transformation to obtain a voltage and flux linkage equation; deriving from a stator voltage equation to obtain a current and voltage model; the current model and the voltage model are combined to obtain a mixed type effective flux linkage observer; obtaining a result of dq-axis self-inductance and mutual inductance changing along with dq-axis current through finite element simulation; a mutual inductance value is introduced, dq-axis self-inductance and mutual inductance values are updated in real time through a table look-up method, position errors caused by magnetic saturation and a cross coupling effect are compensated, and an optimized mixed type effective flux linkage observer is obtained; and sending the observation result as an input signal to a phase-locked loop, and outputting the position and speed information of the motor. According to the hybrid flux linkage observer based on a current model and a voltage model, inductance nonlinear change caused by magnetic saturation and cross coupling effects is compensated on the basis, and the observation precision of the position observer is improved.

The invention discloses an aircraft performance constraint compliance control method for contact type nondestructive testing, and belongs to the field of aircraft control. The implementation method comprises the following steps: introducing a saturated contact force controller into a position ring, and dynamically adjusting a confidence factor based on a position error to adaptively adjust normal rigidity and tangential flexibility; a zero-order control barrier function ZOCBF restrains the force controller, a three-dimensional dynamic safety boundary is established by using a sampling data mechanism, and the position, speed and contact force of the unmanned aerial vehicle are optimized and limited through quadratic programming; designing a hybrid torque controller in the attitude ring, and dynamically selecting a balance point through a binary logic switching strategy; the controller performs safety limitation on the attitude and angular velocity of the unmanned aerial vehicle in combination with zero-order control obstacle function constraint; monitoring a quaternion scalar component symbol in real time by defining a manifold switching set and a jump set; by fusing position loop and attitude loop control logic, compliance control during contact-type nondestructive testing of the unmanned aerial vehicle is realized.

The invention discloses an impedance-adjustable series hybrid cascade static synchronous compensator and a control method thereof. The method comprises the following steps: acquiring grid-connected point voltage and load current information, and performing positive and negative sequence component analysis on the grid-connected point voltage and load current information; calculating a compensation line current component with the same size and opposite phase as the positive and negative sequence components of the load current so as to compensate the reactive power and the negative sequence current of the grid-connected point load; zero-sequence injection current used for in-phase active power balance is calculated, and reference operation current of each cascade branch is obtained; calculating the output reactive power of each phase based on the cascade branch voltage of each phase and the reference operation current, calculating the corresponding trigger angle of each phase thyristor under the condition that the adjustable impedance bears all phase voltages and generates all reactive power, and generating a pulse control signal to realize the control of the adjustable impedance; and each phase cascade converter adopts quasi-proportional resonance control to track the reference operation current, and generates a corresponding PWM signal to respectively control each phase cascade converter.

The embodiment of the invention discloses a combined operation method and system of a gas turbine and an energy storage system, relates to the technical field of electric power system engineering, and is used for solving the problems that coordination control of an existing combined operation mode is difficult, and seamless switching of a power supply during non-planned shutdown of the gas turbine cannot be achieved. The method comprises the following steps: detecting output alternating voltage of the gas turbine and the energy storage system according to a synchronizing device in the synchronizing control system to obtain a detection result; controlling parallel combined operation of the energy storage system and the gas turbine according to a detection result; the running states of the gas turbine and the energy storage system are obtained based on real-time monitoring of a monitoring system, and corresponding charging and discharging power instructions are sent to the energy storage system based on running problems corresponding to the running states so as to ensure that the gas turbine always works in the optimal efficiency range; wherein when the energy storage system is a grid-connected and off-grid hybrid energy storage system, the charging and discharging power instruction is preferentially sent to a grid-connected energy storage system in the energy storage system.

The present invention discloses a hybrid energy storage capacity optimization configuration method for smoothing wind power fluctuations, which belongs to the field of wind power generation technology, including: clustering wind power output data based on the K-means clustering algorithm to obtain a variety of wind power output scenarios; decomposing wind power output data based on the empirical mode decomposition method to obtain multi-order intrinsic mode functions, and reconstructing them into low-frequency components and high-frequency components, the low-frequency components are directly connected to the grid, and the high-frequency components are used as the power task of the hybrid supercapacitor energy storage system, and the hybrid supercapacitor energy storage system is defined as the target system; establishing a capacity configuration model for the target system, and constructing the optimization objective function and model constraint set of the capacity configuration model based on the cost input and constraint conditions of the target system; solving the capacity configuration model based on the genetic algorithm to obtain the initial optimization result, introducing a variable baseline and a fluctuation penalty coefficient, and performing further optimization. The present invention improves the efficiency of smoothing wind power fluctuations.

The invention discloses a sub-module capacity reduction method based on a full-bridge and half-bridge hybrid MMC and a related device, belongs to the field of power electronic converter control methods and converter lightweight design, and comprises two parts of optimization design of full-bridge and half-bridge hybrid MMC DC voltage and sorting algorithm improvement. According to the method, a mathematical model is established to analyze the fluctuation characteristics of full-bridge sub-module capacitor voltage and half-bridge sub-module capacitor voltage under different operation conditions based on the operation characteristics of the full-bridge and half-bridge hybrid MMC, and the DC voltage of the full-bridge and half-bridge hybrid MMC is optimally designed according to the fluctuation characteristics of the capacitor voltage. Compared with harmonic injection, circulation is not introduced, the control strategy is simple, it can be guaranteed that capacitor voltage fluctuation is reliably restrained under different working conditions by flexibly adjusting direct-current voltage, reliable and effective capacitance reduction is achieved, and the method is suitable for large-scale popularization and application. The problem of capacitor voltage fluctuation of the full-bridge and half-bridge hybrid MMC sub-module is solved.

The invention belongs to the technical field of multi-port converter control, and relates to an inertia sharing control method based on a hybrid five-port converter, which realizes overall and inter-phase energy balance through overall and inter-phase inertia sharing control. Inertia support of a sub-module capacitor and a DAB output capacitor is realized through inertia sharing control of an LVDC port. The inertia support of the DAB output capacitor is realized through the inertia sharing control of the sub-module capacitor; the performance of the inertia support is improved through inertia sharing control of DAB output capacitance based on model prediction; power supply to a passive port is realized through voltage and current double-closed-loop control of an MVAC port; according to the method, four inertia sharing controllers and three balance controllers are provided, multi-stage joint control is fully scheduled, the virtual inertia control coefficient is increased, the fluctuation quantity of capacitor voltage is reduced, the system is helped to rapidly transit the transient state, the transient state performance of the system is optimized, and the dynamic performance and the operation boundary of the system are improved.

The invention provides a novel driving circuit for a heterogeneous hybrid device, and the circuit comprises an upper computer, a field programmable gate array, a SiC MOSFET driving voltage control module, a Si IGBT driving voltage control module, a power module, a first driving positive voltage generation circuit, and a first driving negative voltage generation circuit. The system comprises a first driving positive voltage generation circuit, a first driving negative voltage generation circuit, a second driving positive voltage generation circuit, a second driving negative voltage generation circuit, a switch time sequence switching module, a SiC MOSFET driving chip, a Si IGBT driving chip, a SiC MOSFET switching tube and a Si IGBT switching tube. The novel driving circuit for the heterogeneous hybrid device provided by the invention has the functions of switching multiple switch time sequences and switching multi-stage driving voltage, and can meet the requirements in different application scenes.

The invention discloses a hybrid modular multilevel converter (MMC) based on assistance of a thyristor commutation circuit, which is characterized in that on the basis of the hybrid MMC, a series half-bridge sub-module in each bridge arm is connected in parallel with a thyristor branch (consisting of a plurality of thyristors connected in series), one end of the thyristor branch is connected to an adjacent direct current side, and the other end of the thyristor branch is connected to an adjacent direct current side. And the other end is connected with the junction of the half-bridge sub-module and the full-bridge sub-module, and is connected with a direct-current line after being sequentially connected in series with a quick mechanical switch and a load transfer switch on the direct-current side. After a direct-current short-circuit fault occurs, a fault current path can be rapidly and dynamically adjusted, so that the half-bridge sub-module and the full-bridge sub-module can participate in removing the direct-current fault current. According to the method, the fault current clearing speed of the hybrid MMC can be remarkably improved, and the requirement for a full-bridge sub-module is reduced. Therefore, the cost and the loss of the hybrid MMC are lower than those of a conventional hybrid MMC. In addition, the half-bridge sub-module also participates in direct-current fault removal and energy absorption, so that the overvoltage problem of the full-bridge sub-module is also effectively relieved.

The invention discloses a universal calibration method for a single-ended mode and a differential mode of a resistance-capacitance hybrid SAR-ADC, and belongs to the field of chips. The invention relates to a general calibration method for a single-ended mode and a differential mode of a resistance-capacitance hybrid SAR-ADC. The general calibration method comprises the following steps: step 1, configuring a single-ended calibration mode or a differential calibration mode; 2, outputting a digital code; step 3, obtaining an offset; step 4, configuring the SAR-ADC into a single-ended conversion mode or a differential mode; step 5, single-ended conversion mode calibration is carried out; step 6, differential mode calibration is carried out; and 7, adjusting the conversion ending mark to be the highest, and ending the conversion. According to the invention, the problem that mismatch in a single-ended mode and a differential mode of the SAR-ADC is easily caused and the calibration accuracy is influenced in the prior art is solved, and the static capacitance mismatch circuit is suitable for the static capacitance mismatch problem of the high-precision SAR-ADC, so that the requirements of various application scenes are met.

The invention belongs to the technical field of offshore wind power direct current transmission, and discloses a fault ride-through method, equipment and a medium, and the method is applied to a hybrid offshore wind power direct current delivery system composed of an offshore hybrid commutation platform, a seabed direct current cable and an onshore inverter station. The land inverter station is an MMC converter station; the offshore hybrid commutation platform is formed by connecting a diode rectification unit and an MMC unit in parallel, the rated capacity of the diode rectification unit is 85%-95% of the rated capacity of the system, and the rated capacity of the MMC unit is 5%-15% of the rated capacity of the system; the method comprises the following steps: monitoring DC and AC bus voltages in real time to judge a system fault state; triggering a corresponding fault ride-through mode based on the system fault state; the fault ride-through mode comprises the step of changing the operation mode of the MMC unit of the offshore hybrid commutation platform so as to realize fault ride-through. The MMC unit is utilized to make up for the defect that a diode rectification unit lacks controllability, and optimal balance of economical efficiency and fault ride-through performance is achieved.

The application discloses a method for controlling hybrid MMC sub-modules to clear DC short-circuit fault current. The method detects the real-time size of AC voltage, calculates the bridge arm voltage according to the principle of limiting AC current change and not affecting the speed of DC fault current clearing, and determines the number of improved sub-modules (sub-modules capable of providing counter electromotive force, such as full-bridge sub-modules) in each bridge arm according to the bridge arm voltage. Compared with the conventional method of directly locking all sub-modules to clear DC fault current, the application reduces the bridge arm current during the DC fault current clearing process, alleviates the overvoltage of the improved sub-modules, limits the influence on the speed of DC fault clearing, and improves the safety of the hybrid modular multilevel converter during the process of clearing DC fault current.

The application belongs to the field of supercapacitors, and more particularly relates to a high-capacity hybrid supercapacitor with uniform heat distribution for special vehicles. The structure of the hybrid supercapacitor comprises a positive electrode sheet, a negative electrode sheet, a positive electrode tab, a negative electrode tab, a diaphragm and a container shell. The supercapacitor provided in the application is designed to be large in size, not only meeting the high energy requirement of the special vehicle, but also effectively solving the connection problem of the small-size hybrid supercapacitor, and meeting the high power and rapid charging requirement which cannot be met by the lithium ion battery.

The present invention belongs to the field of new energy vehicles, and provides a hybrid radiator for a new energy vehicle battery, which includes a heat exchanger, a fan, a circulation pump, a battery pack and a liquid cooling system. The battery pack includes a chassis, a top cover, a cold bridge bracket and side guard plates distributed on both sides of the cold bridge bracket. The liquid cooling system includes a liquid cooling top plate, a semiconductor refrigeration component, an inlet and outlet liquid cooling plate, a water inlet well box, an outlet pipe, a liquid cooling bottom plate and a liquid cooling partition plate. The liquid cooling partition plate includes an upper partition plate section and a lower partition plate section. Two adjacent liquid cooling partition plates are distributed between the cross gaps of four battery packs and on both side surface orientations. The present invention can use the liquid cooling partition plate to perform liquid cooling on the battery pack from the side of the battery pack. Coupled with the heat dissipation effects of the liquid cooling bottom plate and the liquid cooling top plate, and supplemented by the semi-conductor refrigeration that can be adjusted up and down, the heat dissipation performance of the battery pack can be effectively improved; the cold bridge formed by the cold bridge bracket can conduct heat dissipation partition on the inside of the battery pack, which can further improve the heat dissipation efficiency of the battery pack and is beneficial to extending the service life of the battery.

The utility model provides a hybrid reactive power compensation cabinet body, and belongs to the technical field of power electronics. The protection box body can be used for installing and protecting the reactive compensation module; the reactive power compensation module is arranged in the protection box body, comprises an SVG compensation unit, an SVC compensation unit and a controller, and is used for solving reactive power compensation in a power utilization system; the fixing base is fixedly connected to the side end of the protection box body and can be used for installing the dust blocking fence. The square fence grooves are formed in the side ends of the protection box body and the fixing base and can be used for protecting the air permeability in the box body. In the process of using the reactive power compensation module, the dust blocking fence can be taken out by pulling the connecting strip, after the surface of the dust blocking fence is cleaned, the dust blocking fence can slide into the sliding groove, meanwhile, the two first suction blocks are connected with the two second suction blocks in a matched mode, the dust blocking fence is installed and fixed, the reactive power compensation module does not need to be paused, and operation is convenient. And the heat dissipation fence can be directly cleaned, and the cleanliness of the heat dissipation fence can be effectively improved.

The invention relates to a method for operating a hybrid combination heating appliance (200) for tempering a heating water flow (1) and a domestic hot water flow (2). A heat generator (206) and / or a heat pump heat exchanger (202) connected in series with it in a heating water circuit (208) temper the heating water flow (1), wherein the heat pump heat exchanger (202) can be connected to a heat pump (300) on the secondary side. The heating water flow (1) flows into a connectable, building-side section of a heating water circuit (400) or into a hydraulically parallel bypass (214) of the hybrid combination heating appliance (200) with a domestic hot water heat exchanger (216), wherein a valve device (220) directs the heating water flow (1) into the heating water circuit (400) or into the bypass (214).It is proposed that a control unit (204) detects a risk of icing at the heat pump heat exchanger (202) and / or at another heat exchanger (308) of the heat pump (300) and switches the valve assembly (220) depending on the detected risk of icing so that the heating water flow (1), in particular coming from the heat generator (206), flows through the bypass (214) and the heat pump heat exchanger (202). The heating water flow (1) is in particular greater than or equal to a predefinable minimum flow rate.

The invention discloses an open winding motor power decoupling control device and method based on a Z-source inverter, and relates to the technical field of motor control. The control device is controlled by a power supply hybrid open winding motor; the method comprises three core links: 1, direct-current chain voltage closed-loop control with a reference value updating link, wherein the amplitude of a direct-current chain can be dynamically stabilized only by sampling capacitor voltage; according to the Z-source inverter modulation strategy, specific switch switching points are calculated for different sectors, and harmonic interference introduced by straight-through vectors is restrained; and 3, separating active and reactive voltage components based on a power decoupling algorithm of vector coordinate operation to realize power distribution. According to the invention, the complexity of a control algorithm is simplified, the feedback input quantity is reduced, and the anti-interference capability and the operation stability of the system are improved.

The disclosed hybrid vehicle (1) is a hybrid vehicle (1) including an engine (2), a motor (3), a generator (4), and a controller (10) that controls an operating state of at least the engine (2), and performs series driving in which driving force from the motor (3) drives the vehicle while driving force from the engine (2) causes the generator (4) to generate electric power. The hybrid vehicle (1) has a normal mode in which a driver requesting output is set according to an accelerator opening degree and a sport mode in which the driver requesting output is set to be equal to or higher than the driver requesting output set in the normal mode according to the accelerator opening degree. The controller (10) sets a first minimum rotational speed (ω1) of the engine (2) in the sport mode higher than a second minimum rotational speed (ω2) of the engine (2) in the normal mode during series driving.

The utility model belongs to the technical field of couplings, particularly relates to a hybrid non-contact magnetic transmission coupling, and aims to solve the problems that the conventional magnetic coupling can only perform radial transmission during use, and if the torque is not enough, a hybrid magnetic coupling is adopted, and a group of axial magnetic poles are added to the hybrid magnetic coupling. And the radial transmission and the real axial transmission can be realized at the same time. The device comprises a protective cover and a positioning roller, the positioning roller is located in the protective cover, a magnetic outer rotor is fixedly installed on the inner wall of the protective cover, a magnetic inner rotor is fixedly installed on the outer side of the positioning roller, an installation mechanism is arranged on the protective cover, an isolation cover is fixedly installed on the right side of the protective cover, and a transmission shaft is installed on one side of the isolation cover. The utility model has the advantages of non-contact transmission, high-efficiency transmission, adjustability, no need of lubrication and the like, the energy efficiency is improved, the maintenance work is reduced, and the axial transmission and the torque force are increased.

The utility model relates to the field of connectors, in particular to a vehicle-mounted board end mixed type waterproof connector, which comprises a shell, insertion areas are formed at the front end and the rear end of the shell, and an insertion cavity is formed in the front end of the shell and used for insertion. The terminal A axially penetrates through the bottom wall of the plugging cavity, so that the two ends of the terminal A can be plugged, and the terminal A is used for radio frequency signal transmission; the terminal B axially penetrates through the bottom wall of the plugging cavity, so that the two ends of the terminal B can be plugged, and the terminal B is used for supplying power to the circuit board; the metal conductor axially penetrates through the bottom wall of the plugging cavity, is coaxial with the terminal B and is used for conducting electricity and grounding; and the terminal A and the terminal B are respectively provided with a limiting part for limiting the terminal A and the terminal B to move back and forth along the axial direction of the shell. According to the utility model, the radio frequency coaxial terminal and the low-voltage power supply terminal are arranged and assembled in the shell, the size is small, the cost is low, and the limiting part can ensure the stability of the terminal A4 and the terminal B5 during installation.

The utility model discloses a hybrid energy supply device which comprises an energy supply box body, a diesel generator, an energy storage battery pack and an electric heating steam generator are installed at the inner bottom of the energy supply box body, and the diesel generator is transversely fixed to the left rear side of the interior of the energy supply box body and used for generating electric energy by burning diesel oil. The energy storage battery pack is fixedly installed on the left front side in the energy supply box, one side of the energy storage battery pack penetrates through the energy supply box, and the electric heating steam generator is fixed to the right side in the energy supply box and used for converting electric energy into heat energy and generating steam for printing and dyeing equipment to use. A controller is installed on the front side portion of the energy supply box body and connected with the diesel generator, the energy storage battery pack and the electric heating steam generator through cables of an internal circuit board. The utility model belongs to the technical field of energy supply, and particularly relates to a mixed type energy supply device.

The invention discloses a control method and device of a mixed type heat pump device and the mixed type heat pump device. The control method of the mixed type heat pump device comprises the steps that the operation mode of the mixed type heat pump device is obtained; when the operation mode is a simultaneous heating and water heating mode, a first outlet of the three-way valve is controlled to be closed, an inlet of the three-way valve is controlled to be communicated with a second outlet, and the heat pump is controlled to start to operate, so that the heat pump heats water in the water tank; and controlling the first inlet of the water mixing valve to be closed, controlling the second inlet of the water mixing valve to be communicated with the outlet of the water mixing valve, and controlling the boiler to start to operate, so that the boiler heats the liquid flowing into the indoor unit. According to the hybrid heat pump device, the situation that water storage of the water tank is insufficient or the indoor temperature fluctuates due to mutual influence of heating and water heating can be avoided, meanwhile, the problem that the indoor temperature of the environment where the indoor unit is located in an existing hybrid heat pump device is likely to drop or rise slowly is solved, and the user comfort and the user experience are improved.

A straddled vehicle including a frame structure having a frame body, a rear arm swingably supported by the frame structure, a driving wheel rotatably supported by the rear arm, a drive motor supported by the frame structure or the rear arm, and an electric power generation unit supported by the frame body but not by the rear arm. The electric power generation unit includes: an electric power generation engine arranged with an offset toward a first direction from a center of the straddled vehicle with respect to a left-right direction, not overlapping the drive motor in a side view; and an electric power generator further in a second direction, opposite to the first direction, than the electric power generation engine, overlapping the electric power generation engine, but not overlapping the drive motor, in the side view. The electric power generator is driven by the electric power generation engine to generate electric power.

The invention discloses a fault processing method and device, a flexible direct current system and a storage medium, and relates to the technical field of system control. The method is applied to a flexible direct current system comprising a hybrid MMC, and comprises the following steps: when an MMC direct current fault occurs, obtaining a direct current side fault current and a fault voltage in real time; judging whether a first preset condition is met or not according to the fault current and the fault voltage; if yes, performing locking control on the MMC to realize fault isolation; otherwise, continuously judging whether a second preset condition is met according to the fault voltage; if yes, negative voltage control is carried out on the MMC, and fault ride-through is realized; otherwise, controlling the MMC to work normally; in the fault ride-through process, whether a third preset condition is met or not is judged according to the fault current; if yes, zero-voltage control is carried out on the MMC so as to recover normal work of the MMC; otherwise, performing locking control on the MMC to realize fault isolation. The invention provides a rapid and reliable flexible direct current fault processing method on the system level.