71 results about "Starter generator" patented technology

The embodiment of the invention discloses a multiplex type three-stage starting power generation controller, and relates to the technical field of aviation three-stage starting power generators. In the starting stage, an H-bridge inverter in the starting power generation controller provides single-phase alternating-current exciting current for a main exciter stator exciting winding through SPWM modulation so as to establish a pulsating magnetic field to provide exciting current for a main motor, and a three-phase full-bridge inverter provides armature current for a main motor stator armature winding through SVPWM modulation. In a power generation stage, an anti-parallel diode of the three-phase full-bridge inverter is used as a rectification circuit of the auxiliary exciter, and the H-bridge inverter adopts a PWM chopping mode to operate as an asymmetric half-bridge circuit. A power generation controller and a starting controller are integrated into a whole, and by changing the modulation mode of a hardware circuit, the control function of the three-stage starting generator at different stages can be realized by only one controller, so that the structure of the starting power generation controller is simplified, the system integration degree of the three-stage starting generator is improved, and the volume and the weight of the system are reduced.

To obtain maximum performance and belt longevity, it is important that the belt is properly tensioned. In some scenarios such as hybrid vehicles where the belt is going through large variations in drive torque due to varying Belt Starter Generator (BSG) parameters due to regeneration and the like, a dynamic pivot may optimize belt tension for a variety of engine modes. In some embodiments a dynamic pivot dual arm tensioner may include a center arm having a first tensioning pulley journaled to the center arm and engageable with a mounting surface, such as an engine block or accessory bracket, through a mounting axis; a side arm having a second tensioning pulley journaled to the side arm and coupled to the center arm; a dynamic pivot around which the tensioner dynamically rotates; and the dynamic pivot journaled to the center arm.

The invention belongs to the technical field of aircraft electrical systems, and discloses an aircraft power supply system conversion control system and method. An important airborne part of an aircraft is connected with a bus bar; a ground power supply is connected with the first bus bar through a ground power supply contactor, a storage battery pack is connected with the bus bar through a storage battery pack contactor, and a starter generator is connected with the bus bar through a generator contactor and further connected with the storage battery pack through a generator switch. Wherein the storage battery pack contactor and the ground power supply contactor are connected and controlled by the ground power supply switch, and the generator contactor is connected and controlled by the starter generator controller; and a relay group is also arranged, and is connected with and controls all the contactors. The principle is simple and clear, conversion of a ground power supply, a generator and an emergency power supply can be achieved, and it can be guaranteed that the power supply system provides power for ground maintenance, engine starting, normal flight and emergency return flight of an airplane.

The utility model discloses a powder coating tool for the inner wall of a stator shell of a starter generator, which belongs to the technical field of starter generator manufacturing, and comprises a lower cover assembly and a mounting plate which are vertically arranged at an interval, and a plurality of guide rods are arranged between the lower cover assembly and the mounting plate; an air cylinder is arranged on the mounting plate, and a piston rod of the air cylinder is vertically arranged and connected with a mandrel assembly and an upper cover assembly; the lower cover assembly, the mandrel assembly and the upper cover assembly are ventilated and liquid-filled, the lower cover assembly and the upper cover assembly respectively blow away powder on upper and lower spigots and upper and lower end faces of a generator stator shell, and the mandrel assembly blows away powder on the inner wall and the upper portion of a pole shoe, so that the technical requirements of the powder coating process of the starting generator stator shell are met. In the whole powder coating machining process, an external cooling liquid source circulates in the lower cover assembly, the mandrel assembly and the upper cover assembly, the temperature, transmitted to the tool, of the stator shell of the starter generator is taken away, and the powder adhesion problem caused by overheating of the tool is avoided.

The invention discloses an all-electric engine self-powered system architecture and a control strategy thereof, and belongs to the field of aircraft power supply systems. The structure of the all-electric engine self-powered system is composed of an aero-engine, two starting generators, two sets of AC / DC starting power generation controllers, two 270V high-voltage DC bus bars, an electric energy storage device, a 28V low-voltage DC bus bar, a multi-port bidirectional DC / DC converter, a multi-port bidirectional DC / AC inverter, an oil pump motor and an electric actuator. The self-powered system is isolated from an external power supply system. And controlling the self-powered system according to the control strategy. The self-powered system architecture and the control strategy can effectively enhance the reliability and the stability of an engine key load power supply network, and improve the power supply quality of the power supply system; voltage fluctuation on the high-voltage bus bar is suppressed; energy feedback and efficient utilization are realized; the system cost and complexity are reduced, and the fault-tolerant capability and reliability of the self-powered system can be effectively improved.

The invention belongs to the technical field of starting control of an aviation starting and power generation integrated system, and particularly relates to a sensorless starting control method for an aviation three-stage type starting generator. The method comprises the following steps: estimating the initial rotating speed of starting with rotation by utilizing the voltage of a permanent magnet machine of a three-stage starter generator, starting according to the frequency of a given current vector and a corresponding current amplitude value of the rotating speed estimated by the voltage of the permanent magnet machine through I / f control, and estimating the rotor position of the three-stage starter generator through the counter electromotive force of a main generator at the same time; and when the rotor position estimated by the counter electromotive force coincides with the rotor position given by the I / f starting, the I / f starting is switched to the counter electromotive force position estimation through weighted switching, so that the non-position rotation starting function of the three-stage starter generator is realized.

The invention belongs to the technical field of aviation power generation systems, and discloses an alternating current starting power generation system starting phase sequence online identification method, which comprises the following steps of: 1, providing 28V control electricity and 115V / 400Hz three-phase constant-frequency alternating current for a generator controller; 2, setting a current comparison threshold value, wherein a data acquisition period is as follows; the starting generator controller is used for converting the 115V / 400Hz three-phase constant-frequency alternating current into low-voltage three-phase constant-frequency alternating current; 3, applying the low-voltage three-phase constant-frequency alternating current to a three-phase winding of a main generator stator to generate three-phase current; step 4, collecting three-phase current fed back by a current sensor, and recording the three-phase current as,..., and collecting three-phase current fed back by a motor mutual inductor, and recording the three-phase current as,...; 5, calculating the sum of the three-phase current according to the sum; and 6, calculating the absolute value of the current sum in one current period, solving the average value of the absolute values of continuous N periods, if the average value is smaller than a set threshold value, indicating that the starting phase sequence is correct, otherwise, indicating that the starting phase sequence is wrong.

The present invention relates to an engine assembly (100) for a motor vehicle. The assembly has a crankshaft (110) housed in a crankcase (120), a cam chain window (130) through which an oil path passes from a cylinder head to an oil sump in the crankcase (120), and an integrated starter generator (ISG) (200) having a rotor (210) rotatably mounted on one end of the crankshaft (110), the rotor having a plurality of protrusions (212) on a circumferential surface; wherein the circumferential surface of the rotor (210) receives oil from the cylinder head through the cam chain window (130) and the plurality of protrusions (212) splash the oil towards an inner wall (122A) of a crankcase cover (122) proximate to the ISG (200), thereby cooling the oil.

The embodiments described herein provide a system and method for using an integrated starter generator (ISG) for electric torque assistance in specific strokes of a 2-stroke or 4-stroke internal combustion (IC) engine (300) with reduced inertial mass compared to a conventional IC engine with inertial mass loading. This is intended to overcome a speed variation problem caused by the engine's lower inertia at low speeds and idle, thus compensating for the crankshaft's lower speed. Furthermore, allowing the 2-stroke and 4-stroke engines to operate with a lean fuel-air mixture improves emissions at low speeds and idle, leading to better control of IC engine emissions.

A method for starting a motorcycle engine is performed through an engine starting control system including a controller, a power supply apparatus coupled to the controller, and an integrated starter and generator coupled to the controller, the power supply apparatus, and the motorcycle engine. The method includes driving the integrated starter and generator to perform reverse operation at a reverse operation constant torque value within a reverse operation time until the reverse operation time ends; controlling the power supply apparatus to output a forward operation constant current to the integrated starter and generator after the integrated starter and generator stops the reverse operation, to perform forward operation; and starting the motorcycle engine through the integrated starter and generator when a forward operation angular velocity value is greater than or equal to an expected value. The method starts the motorcycle engine effectively. Furthermore, a corresponding system is also provided.

A power supply system (100) for an aircraft, comprising: a plurality of main generators located in a left channel and a right channel; an auxiliary power unit (APU) starter generator (ASG) located in the right channel and configured to supply power when the main generators fail; a plurality of transformer rectifier units (TRUs) located in the left channel, the right channel and an emergency channel; a plurality of autotransformer units (ATUs) located in the left channel, the right channel and the emergency channel; and a ram air turbine (RAT) located in the emergency channel. The present invention further relates to a method for using a power supply system to supply power an aircraft.

The invention relates to the technical field of motor rotor side current estimation, in particular to a multi-stage starter generator rotor side current estimation method considering iron loss influence, which comprises the following steps: constructing an equivalent iron loss resistance database; obtaining a current excitation current effective value and equivalent iron loss resistance corresponding to the current excitation current effective value in an equivalent iron loss resistance database; obtaining the rotor three-phase current of the main exciter under the static three-phase coordinate system; and obtaining the rotor current of the main motor. According to the method, the problem that the rotor side current cannot be measured due to a brushless excitation structure of the multi-stage starter generator is solved, the current estimation effect is not influenced by the iron loss change of the main exciter, and the problem that when the main exciter has large iron loss, the estimation current is large due to the fact that the iron loss is ignored in a traditional method is solved; therefore, the accuracy of current estimation is improved.

Motor vehicle drive device for connecting an internal combustion engine (1) to an electromechanical energy converter (2), wherein this energy converter is configured for starting the internal combustion engine, and with a starter-generator transmission (5) comprising a first drive train (3) which is configured for transmitting a torque from the electromechanical energy converter (2) to the internal combustion engine (1) when starting the internal combustion engine and wherein this transmission (5) has a reduction gear ratio in the direction from the electromechanical energy converter (2) to the internal combustion engine (1) and comprising a second drive train (4) which is configured for transmitting a torque at least temporarily in the direction from the internal combustion engine (1) to the electromechanical energy converter (2) and wherein the second drive train (4) is arranged parallel to the first drive train (3) with respect to the torque transmission between the electromechanical energy converter (2) and the internal combustion engine (1), characterized by the fact that the first drive train (3) has a one-way coupling which is arranged such that a torque can be transmitted from the electromechanical energy converter (2) to the internal combustion engine (1) via this drive train (3) when the internal combustion engine (1) is started and that the second drive train (4) has a speed-sensitive clutch (6) which is open until a first speed threshold is reached, so that in this state no torque can be transferred from the internal combustion engine (1) to the electromechanical energy converter (2) via the second drive train (4) and that the speed-sensitive clutch (6) is closed from the moment this first speed threshold is exceeded and that the one-way clutch makes it possible, during the phases in which the internal combustion engine alone or together with the starter generator provides drive power for the propulsion of the motor vehicle, that the starter generator gearbox is only running freely, meaning no power can be transmitted through it.

The invention relates to a method for operating a hybrid electric vehicle (2), at least comprising the following steps: (S1400) Reading a battery state value (BSV) indicative of the state of a traction battery (28) of the hybrid electric vehicle (2) and comparing the battery state value (BSV) with a battery state reference value (BSR), and (S1500) Activating an eEGH (20) of the hybrid electric vehicle (2) when the battery state of charge (BZW) is greater than the battery state of charge reference (BZR), and / or (S28 00) Reading a temperature value (TW) indicative of an ambient temperature of the hybrid electric vehicle (2) and comparing the temperature value (TW) with a temperature reference value (TR), and (S1700) Starting an internal combustion engine (6) of the hybrid electric vehicle (2) with a starter generator (14) of the hybrid electric vehicle (2) when the temperature value (TW) is greater than the temperature reference value (TR), and / or (S2900) Starting an internal combustion engine (6) of the hybrid electric vehicle (2) with a starter (16) of the hybrid electric vehicle (2) when the temperature value (TW) is less than the temperature reference value (TR).

The application discloses a three-stage starting generator rotor position estimation method suitable for a single-phase exciter, and belongs to the field of motor control. The method estimates the rotor d-axis current and extracts its outer envelope by applying an alternating voltage on the exciter stator side and collecting the stator current. The outer envelope crest and trough are detected to generate the discrete position state of the exciter. The discrete state of the main motor is generated according to the pole pair ratio and the duration is recorded. The discrete rotor position of the main motor and the interval average speed are calculated accordingly. The continuous rotor angle is obtained by using the previous interval speed compensation, and the real-time rotor position is obtained by combining the initial position. The application can realize high-precision estimation of the rotor position of the main motor by using only the electrical signal characteristics of the single-phase exciter itself, without the need for a mechanical position sensor. The application solves the problem that the existing method cannot be applied to the single-phase exciter structure, and has good stability and robustness in severe environments such as aviation high temperature and high pressure, strong electromagnetic interference and the like.

A method to reset an electromechanical disconnect is provided. The method includes electrically disengaging a pawl holding a first half of a dog clutch, located between a starter-generator and a main engine gear box, in a disengaged position, controllably energizing the starter-generator to produce a selected angle of rotational motion of a starter-generator shaft, wherein the selected angle is equal to 360 degrees divided by a number of teeth on the first half of the dog clutch, and determining when the first half of the dog clutch is engaged with a second half of the dog clutch.

The utility model discloses a motorcycle idling start-stop controller with dormancy control, which comprises a dormancy control module, a Hall power supply module, a half-bridge driving module, a CAN (controller area network) communication module, a start power generation motor, an MCU (microprogrammed control unit) and a power switch for controlling a vehicle power supply, the Hall power supply module, the half-bridge driving module and the CAN communication module are electrically connected with the dormancy control module, the starting power generation motor is provided with a Hall sensor, the MCU is electrically connected with the dormancy control module and the Hall sensor, and the Hall power supply module can supply power to the Hall sensor when the power switch is closed. The MCU can detect the working state of the starting power generation motor through the Hall sensor, and the dormancy control module can control the Hall power supply module, the half-bridge driving module and the CAN communication module to enter a dormancy mode according to a received dormancy electric signal. The energy-saving device is good in energy-saving effect.

The invention provides a starting method and device of a micro gas turbine, a storage medium and an electronic device.The method comprises the steps that a starting signal of the micro gas turbine is responded, a starting generator is started and enters a first starting stage, and in the first starting stage, the rotating speed of the starting generator is controlled to rise through open loop, the starting generator is connected with the micro gas turbine through a coupling; in the first starting stage, collecting a first bus voltage and a first phase current of the generator in real time; based on the first bus voltage and the first phase current, controlling the starting generator to switch from the first starting stage to a second starting stage; and in the second starting stage, the rotating speed of the generator is continuously increased through closed-loop control to reach the ignition rotating speed of the micro gas turbine. According to the embodiment, the technical problem that in the prior art, starting of the micro gas turbine is controlled through a position sensor, and the occupied space is large is solved, and the cost and the size of a power generation system are reduced.

Embodiments of the present application disclose a vehicle electrical equipment power supply method, device, equipment and vehicle. The real-time working condition of a vehicle battery pack is detected, and the running condition of a vehicle engine is acquired when the real-time working condition of the vehicle battery pack meets a preset working condition. The trigger condition of a belt-driven starter generator is acquired according to the running condition of the vehicle engine, and the belt-driven starter generator is triggered to charge a DC converter according to the trigger condition. The trigger condition of the belt-driven starter generator is acquired according to the running condition of the vehicle engine, and the belt-driven starter generator is triggered to supply power to a vehicle generator bus according to the trigger condition. When the vehicle battery pack fails or works in a low-temperature environment, the belt-driven starter generator can be triggered to charge the DC converter and supply power to the vehicle generator bus according to different running conditions of the vehicle engine, so as to reduce the situation that the vehicle cannot run.

A hybrid electric vehicle (HEV) includes an internal combustion engine, an electric traction motor, a belt starter generator (BSG) unit, a low voltage battery system including a low voltage battery, and a high voltage battery system including a high voltage traction battery. A DC / DC converter is configured to convert high voltage from the high voltage battery system into low voltage to charge the low voltage battery and support low voltage loads. A powertrain control system configured for reducing HEV CO2 emissions includes a controller configured to control an output voltage setpoint of the DC / DC converter and the BSG unit. The controller is configured to selectively increase or decrease the output voltage setpoints of the DC / DC converter and / or the BSG unit to reduce high voltage battery power consumption to thereby avoid or delay turning on the internal combustion engine to reduce CO2 emissions.

This invention relates to the field of aviation thermal management system technology, specifically to a split-flow dual-mode integrated thermal management system, a hybrid aircraft, and a method. The split-flow dual-mode integrated thermal management system includes a refrigerant heat conduction circuit and an evaporative cooling cycle circuit. The refrigerant heat conduction circuit includes a liquid-cooled pump, a power battery heat conduction channel, a distributor, a storage tank, a starter generator heat conduction channel, and a liquid-cooled radiator; the evaporative cooling cycle circuit includes a compressor, a condenser, a throttle valve, and an evaporator connected in sequence; the split-flow dual-mode integrated thermal management system includes a hybrid cooling mode; the refrigerant flow circuit of the refrigerant heat conduction circuit in the hybrid cooling mode includes a first sub-circuit and a second sub-circuit; this solves the problem of high power and low power-to-weight ratio in battery thermal management systems with high evaporative cycle power.

Torque control techniques for a multi-motor electrified powertrain of an electrified vehicle include determining a total torque request to be satisfied by the multi-motor electrified powertrain, wherein a first electric motor is connected to a crankshaft of an engine via a belt as part of a belt-driven starter-generator (BSG), estimating a torque loss associated with the belt based on stored data and an engine speed or a BSG speed, determining an optimized torque split of the total torque request between the first electric motor and a second electric motor based on the estimated belt torque loss and to minimize battery power, determining torque commands for the engine and the first and second electric motors based on the determined optimized torque split, and controlling the multi-motor electrified powertrain based on the determined torque commands for the engine and the first and second electric motors.

Motor vehicle with an internal combustion engine (2) intended for vehicle propulsion, at least one electric machine (13) that can be operated as a generator and is mechanically rotatably coupled to a drive train (2) of the vehicle (12) for generating electrical energy, at least one energy storage device (14, 15) which is connected to the at least one electric machine (13) for storing the electrical energy generated by it, at least one friction brake for decelerating the vehicle (12) and at least one control unit (7) for controlling the at least one electric machine (13) and the at least one energy storage device (14, 15) as well as the at least one friction brake, wherein the control unit (7) is configured toa vehicle deceleration torque dependent on a braking request specified by a user of the vehicle (12) via a brake actuation element (8) up to a maximum deceleration torque achievable by the generator load of the at least one electric machine (13) to be provided solely by means of the at least one electric machine (13) and the resulting electrical energy to be stored in the at least one energy storage device (14, 15) and, in the event of a braking request exceeding this maximum achievable deceleration torque, the additional vehicle deceleration torque also to be provided by means of the at least one friction brake, wherein the electric machine (13) is an alternator or a starter generator, characterized in that the at least one energy storage device (14, 15) is a flexible heat storage container with an inner body and an outer body, between which insulation is arranged,and is equipped with an electric heating device (6), wherein the heating device (6) can be operated by means of the electrical energy generated by the electric machine (13), and the heat storage container stores the waste heat of the internal combustion engine (2) released to a coolant cooling the internal combustion engine (2), and the temperature of a heat storage medium contained in at least one energy storage device (14, 15) can be increased by means of the electric heating device (6) beyond a value achievable by means of the waste heat and can be maintained at such an increased value, wherein both a 12-volt electrical system and a parallel 48-volt electrical system are used, wherein the 12-volt electrical system has a first energy storage device (14) as a 12-volt battery and the 48-volt electrical system has a second energy storage device (15) as a 48-volt battery, and wherein the electric machine (13) is connected to both the first and the second energy storage devices (14, 15). is,so that both the 12-volt electrical system and the 48-volt electrical system are powered by the electric machine (13).

Methods and systems are provided for a hybrid vehicle. In one example, a method includes in response to an engine soak time greater than a threshold soak time, determining a battery state of charge (SOC) and comparing the battery SOC to a threshold SOC, activating an electric exhaust gas heater (eEGH) in response to the battery SOC being greater than the threshold SOC, and starting an engine using a starter generator in response to an ambient temperature being greater than or equal to a threshold ambient temperature

The embodiment of the invention provides a miniature turbine generator. The miniature turbine generator comprises a gas compressor, a starter / generator and a turbine which are coaxially connected in sequence; the heat regenerator is provided with an air inlet, an air outlet, a fuel gas inlet and a fuel gas outlet; the heat regenerator is communicated with a gas nozzle of the turbine through a gas inlet; one end of the single-barrel type combustion chamber assembly communicates with an air outlet of the heat regenerator, and the other end of the single-barrel type combustion chamber assembly communicates with an air inlet of the turbine. One end of the cold air pipe is connected with a high-pressure exhaust port of the air compressor, and the other end of the cold air pipe is connected with an air inlet of the heat regenerator. One effect of the invention lies in that the starter / generator is arranged between the gas compressor and the turbine, thereby facilitating the installation of the bearing and reducing vibration and noise.

1. Name of the design product: integrated starter generator (air cooling). 2. Use of the design product: used as an integrated starter generator of an aero-engine. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The invention belongs to the field of aviation power system controller testing, and particularly relates to a starting generator controller open-loop test testing system and testing method. The system comprises a test control module, a power supply module, a plurality of input and output modules, a communication module and a test result judgment module. The test control module is used as a control core, automatically calls a test program and configures parameters; the power supply module provides an adjustable working power supply; the input and output module is used for outputting a test signal and collecting feedback of the controller; the communication module realizes data interaction with the controller; and the test result judgment module analyzes and judges the test data and generates a report. Through the integrated and modularized design, various actual working conditions of the controller can be simulated, accurate testing of key performance such as voltage regulation and fault control can be automatically completed, the problem that an existing testing system cannot be subjected to out-field non-off-position detection and upgrading is solved, the out-field maintenance efficiency is remarkably improved, and the troubleshooting and software upgrading period is shortened.

Aspects of the present invention relate to a control system for controlling torque distribution between a first axle (110) and a second axle (120) in a vehicle (100), the control system including one or more controllers. The control system is configured to detect whether the vehicle is operating over limit and to detect the vehicle speed. When the vehicle is operating over limit and the vehicle speed is below a first speed threshold, the torque distribution is controlled to reduce the over-limit operating torque to the first axle and increase the over-limit operating torque to the second axle. The vehicle may be a hybrid vehicle including an internal combustion engine (ICE) (201), a belt integrated starter generator (B-ISG) (205), and an electric rear axle drive (ERAD) (204).

A method, a computer program product and a control unit for operating a hybrid electric vehicle and a hybrid electric vehicle having such a control unit. The invention relates to a method for operating a hybrid electric vehicle (2), having at least the following steps: (S1400) reading a battery state value (BZW) representing a state of a traction battery (28) of the hybrid electric vehicle (2) and comparing the battery state value (BZW) with a battery state reference value (BZR), and (S1500) if the battery state value (BZW) is greater than the battery state reference value (BZR), determining that the battery state value (BZW) is greater than the battery state reference value (BZR). If the temperature value (TW) is greater than the temperature reference value (TR), activating an eEGH (20) of the hybrid electric vehicle (2), and / or (S2800) reading a temperature value (TW) representing the ambient temperature of the hybrid electric vehicle (2) and comparing the temperature value (TW) with the temperature reference value (TR), and (S1700) if the temperature value (TW) is greater than the temperature reference value (TR), starting an internal combustion engine (6) of the hybrid electric vehicle (2) using a starter generator (14) of the hybrid electric vehicle (2), and / or (S2900) starting an internal combustion engine (6) of the hybrid electric vehicle (2) using a starter motor (16) of the hybrid electric vehicle (2) if the temperature value (TW) is below the temperature reference value (TR).

The utility model relates to high -power turbo shaft engine test board electrical system belongs to engine test technical field, including alternating current source, test board controller, first alternating current direct current converter, second alternating current direct current converter, direct current direct current conversion unit, alternating current source connects respectively dynamometer, emergency power supply, still through first alternating current direct current converter connection fuel oil electric governing pump distribution input end, through second alternating current direct current converter connection starting generator distribution input end, emergency power supply passes through direct current direct current conversion unit and connects engine electronic controller, test board controller respectively, the system still includes distributed data acquisition module and sensor signal isolation unit. The existing turbo shaft engine test board electrical device electrical wiring complex, control precision low, system reliability poor problem is solved.