130 results about "Current loop control" patented technology

The invention belongs to the technical field of new energy, and particularly relates to a fault voltage ride-through optimization method and system for a network construction type energy storage converter. Carrying out positive and negative sequence separation and Clark-Park coordinate transformation on the three-phase power grid voltage and the inversion current, calculating active power and reactive power of the network-forming type energy storage converter, and carrying out power loop control to obtain three-phase reference voltage and angular velocity; performing voltage loop control, and dynamically adjusting a positive sequence active current and a positive sequence reactive current according to whether a low-voltage-crossing indication signal exists or not; performing positive-sequence current loop control and negative-sequence current loop control, and then performing inverse Clark-park conversion to obtain positive-sequence three-phase reference voltage and negative-sequence three-phase reference voltage; and superposing the positive-sequence three-phase reference voltage and the negative-sequence three-phase reference voltage for PWM (Pulse Width Modulation). According to the invention, when the power grid voltage is unbalanced due to a fault, the oscillation of the direct current side voltage and power caused by the negative sequence component is eliminated, and the power angle stability is improved and the fault current is suppressed by dynamically adjusting the related reference value during the fault voltage ride-through period.

A single-phase PWM rectifier direct-current side boost type active filter circuit control method based on a duty ratio feed-forward single current loop is characterized by comprising the following steps that inductive current of an active filter circuit is collected; collecting the direct current side current of the single-phase PWM rectifier; the method comprises the following steps: extracting a DC side current secondary pulsation component of a PWM rectifier as a reference current of an active filter circuit, performing high-pass filtering on the acquired inductive current of the active filter circuit to filter out a DC component, then subtracting the reference current, and enabling a deviation value to pass through a controller to obtain a current loop control component; the control component per unit of the current loop is added with the voltage control duty ratio Dv of the support capacitor of the active filter circuit for modulation to obtain a control signal of a corresponding switch tube. According to the method, a support capacitor voltage sampling circuit and a control loop of a traditional boost active filter circuit are omitted, the system hardware cost is reduced, the reliability is improved, and the control loop is simplified. The method is suitable for all active filter control which adopts a boost type active filter circuit for filtering on the direct current side, and applicable systems comprise single-phase rectification, single-phase inversion, multi-phase rectification, multi-phase inverters and the like.

The invention discloses a power current loop control method for seamless switching of grid-connected and off-grid modes of an energy storage PCS, and the method achieves the seamless switching of the two control modes through the dynamic adjustment of a power reference value of an inverter, the merging of a PQ-controlled current loop and a Vf-controlled current loop, and the introduction of a PQ-controlled reference current into a Vf control loop. The method specifically comprises the following steps: detecting voltage, current and phase parameters in grid-connected and off-grid states, and calculating corresponding power; when the switching signal is received, the grid-connected active power is adjusted to an off-grid preset value through a PI controller; switching an inverter control mode within a power error allowable range, and introducing a PQ reference current to a Vf voltage loop; and control mode switching and switch state change are completed in sequence. According to the method, the problems of voltage fluctuation and current sudden change during switching in a traditional method are effectively solved, bidirectional seamless switching can be realized without reducing zero output power, dependence on an additional energy storage system is reduced, and the operation stability of the micro-grid is improved.

The application belongs to the technical field of motor drive control, and discloses a permanent magnet synchronous motor current loop control method based on a predictive nonlinear active disturbance rejection, which comprises the following steps: step 1, establishing a permanent magnet synchronous motor control system model considering time delay; step 2, establishing a current loop extended state observer with time delay compensation; and step 3, designing a nonlinear current feedback control law based on finite time convergence. The application establishes a discrete domain extended model for the current loop of the permanent magnet synchronous motor, and proposes a high-performance nonlinear active disturbance rejection current control method for the permanent magnet synchronous motor. The high-frequency response current controller designed by the application is composed of a predictive extended state observer and a nonlinear current feedback control law, and can solve the problem that the frequency response of the permanent magnet synchronous motor drive is limited due to the digital delay in the motor digital control system and the low-pass filter delay in the current feedback channel, and improve the anti-disturbance performance when the motor parameters change.

The invention discloses a servo driver based on a heterogeneous computing architecture, and relates to the field of servo drive control, and the servo driver comprises a first processing unit which is configured to execute an upper-layer control loop and a real-time communication protocol of a servo system; the second processing unit is a heterogeneous processor integrated with a processing system and programmable logic, the processing system is used for executing system management and man-machine interaction tasks, and the programmable logic is configured to realize lower-layer current loop control, pulse width modulation signal generation and hardware acceleration calculation; and the high-speed parallel data interface is connected with the first processing unit and the second processing unit and is used for realizing bidirectional interaction of the control data and the state data. According to the scheme, through collaborative optimization of a heterogeneous computing architecture and a hardware acceleration mechanism, the comprehensive performance of the servo driver is remarkably improved.

A power supply control method, a power supply and a computer program product are applied to the technical field of power supplies, and the power supply control method comprises the following steps: obtaining a target output value and a target limit value of a current configuration; acquiring a voltage value measured by the current circuit and a current value measured by the current circuit; if the source working mode is satisfied, determining a feedback time relationship between the current loop control module and the voltage loop control module; if the feedback time of the current loop control module is less than the feedback time of the voltage loop control module, controlling to reach a current limit value or a current output value in the target output value and the target limit value; and on the contrary, the voltage loop control module controls to reach the voltage limit value or the voltage output value in the target output value and the target limit value. Because the control module with short feedback time can be switched to control the power supply output, the voltage switching and the current switching can be smoothly carried out, thereby avoiding the occurrence of overtuning and inflection points.

A power supply control method, power supply, and computer program product are applied to the power supply technology field. The power supply control method includes: obtaining a currently configured target output value and a target limit value; obtaining a currently measured voltage value and a currently measured current value of the circuit; if a source operating mode is satisfied, determining the feedback time relationship between a current loop control module and a voltage loop control module; if the feedback time of the current loop control module is less than the feedback time of the voltage loop control module, controlling the current to reach the current limit value or current output value between the target output value and the target limit value; otherwise, controlling the voltage to reach the voltage limit value or voltage output value between the target output value and the target limit value based on the voltage loop control module. Because the power supply output can be controlled by switching to a control module with a shorter feedback time, voltage and current switching can be performed smoothly, thereby avoiding overshoot and inflection points.

The invention relates to the technical field of robots, in particular to a bodybuilding robot joint module motor electrical zero point confirmation method, which comprises the following steps: randomly setting an initial electrical zero point, executing a current loop in a short pulse mode to control motor rotation, giving a forward rated current at an isqref end, substituting the forward rated current into a q-axis current PI controller to calculate to obtain Usqref, and determining the initial electrical zero point; performing inverse Park conversion on the Usqref to obtain Ualpha, obtaining Ua, Ub and Uc through an SVPWM (Space Vector Pulse Width Modulation) algorithm, and finally inputting the Ua, Ub and Uc to three phases of the motor to drive the motor to rotate so as to complete primary current loop control; and meanwhile, the feedback of the real encoder is detected. According to the method, zero point confirmation of the motor in a full-load range is ensured, compared with a pre-positioning method, the method has a wider application range, and the accurate zero point confirmation can ensure the adaptive capacity of the robot in a complex and dynamic environment.

The present invention discloses a control method, device, motor, storage medium and processor for a motor. The method includes: in the field weakening control system of the motor, a single q-axis current regulator is adopted to freely switch between field weakening traction and braking control under field weakening conditions; in the control system of the single q-axis current regulator, a field weakening compensation module is added to perform field weakening compensation processing on the d-axis and q-axis currents of the motor; and an out-of-control limiting and compensation module is added to perform out-of-control limiting and compensation processing on the field weakening current of the motor to obtain the voltage vector angle of the field weakening control system of the motor; according to the voltage vector angle and the maximum stator voltage of the motor, the dq-axis reference voltage vector of the motor is determined to drive and control the system where the motor is located. With this solution, by adopting a single current loop control structure in the field weakening control of a permanent magnet synchronous motor and using a limiting method and a current compensation method for field weakening control, the stability of the control system of the permanent magnet synchronous motor can be improved.

The application discloses an inverter grid-connected current harmonic suppression method and system, collects inverter bridge arm current and grid-connected point voltage, carries out operation on the inverter bridge arm current and the grid-connected point voltage to obtain grid-connected current, carries out harmonic suppression on the grid-connected current through a harmonic suppression ring to obtain harmonic suppression ring output value, obtains feedforward value of the grid-connected point voltage and fundamental wave current loop control output value, takes a negative value of the harmonic suppression ring output value and superimposes the feedforward value of the grid-connected point voltage and the fundamental wave current loop control output value, obtains modulation voltage of the inverter, carries out PWM modulation on components of the modulation voltage to generate a switching signal for driving the grid-connected inverter to work. The application estimates the grid-connected current, suppresses specific harmonics in the grid-connected current, makes the grid-connected current harmonic suppression effect better, adopts feedforward on the grid-connected point voltage, makes the inverter have better dynamic performance and stability under strong grid or weak grid, and reduces the grid-connected current harmonic suppression difficulty.

The invention discloses a power conversion circuit, which comprises a main power converter of which the output end is connected with the output end of the power conversion circuit through a first detection resistor, and is used for providing a first current; the output end of the auxiliary power converter is connected with the output end of the power conversion circuit through a second detection resistor, and the auxiliary power converter is used for providing second current; the feedback regulation circuit is used for generating a regulation signal according to the first current and the second current and providing the regulation signal to a current loop control pin of the auxiliary power converter; therefore, the ratio of the current value between the second current provided by the auxiliary power converter and the first current is equal to the ratio of the resistance value between the first detection resistor and the second detection resistor, so that the requirement of heavy-load current can be met only by two power converters.

The application discloses a motor system efficiency improving system, device and vehicle permanent magnet synchronous motor. The motor system efficiency improving system comprises a CAN communication transceiving module, a torque coordination module, a variable frequency control module and a motor control module. The application receives instruction information sent by a vehicle controller through the CAN communication transceiving module, analyzes the instruction information, processes the analyzed instruction information through the torque coordination module, obtains target instruction information, processes the target instruction information through the variable frequency control module, obtains frequency information and current loop control parameter information, switches the motor control mode according to the target instruction information through the motor control module, and improves the motor efficiency according to the frequency information and the current loop control parameter information. The application realizes closed-loop control of the motor according to the current loop control parameter information through the motor control module, and improves the motor efficiency according to the frequency information.

The invention provides an aviation permanent magnet generator power control system and method, and the method comprises the steps: enabling a result obtained after the difference value between a given rotating speed and feedback power from a power calculation module passes through a PI controller to serve as the input of a current loop control signal, and enabling an output value of a modulation ratio weak magnetic module to serve as the input of the current loop control signal, two-phase current sampling is carried out through a phase current detection circuit, a dq rotating coordinate system is obtained through Clarke and Park conversion, a first result is obtained through subtracting an input and a feedback value of a current loop, a second result is obtained through subtracting the input and the feedback value of the current loop, and the first result is output through a current PI controller. And a second result is output through a current PI controller, a sum is obtained through Park inverse transformation, six paths of control signals are output through an SVPWM module to drive an inverter to work, and a generator outputs target power. The method can be used for power control of any aviation permanent magnet power generation control system.

The invention discloses a brushless direct-current motor control system and a brushless direct-current motor controller adopting the same, which realize a current loop and generate a motor driving signal through hardware circuit design, cancel a rotating speed loop and a corresponding motor rotating speed measurement module, and only reserve a position loop in embedded software. The resource overhead of the embedded processor is greatly reduced, so that embedded software can bear more other work tasks, the hardware design is simplified, the product cost is reduced, and the volume and the weight of a product are favorably compressed. Moreover, according to a current loop control strategy, an existing PWM control mode is improved into current direct control, the system complexity is further reduced, the design is simplified, EMI electromagnetic interference noise in the device can be reduced, smoother rotating motion can be provided, the tiny jitter defect of a PWM driving mode at the zero-current intersection position is avoided, and the reliability of the device is improved. And a hardware circuit control mode also has the advantages of simplicity, high efficiency and quick response.

This application discloses a current loop control method, related devices, and a permanent magnet synchronous motor (PMSM), relating to the field of motor control. By feeding forward a disturbance voltage characterizing the voltage change caused by parameter variations in the PMSM, an ideal stator current equation is obtained. The transfer function of the PMSM is obtained by combining the vector expressions of stator voltage and stator current in an orthogonal coordinate system. The first current loop transfer function is determined by combining the first controller transfer function. The coefficient values ​​of each control element are determined by tuning the first current loop transfer function. Then, based on the obtained second controller transfer function and the compensation term for the current loop delay, a control voltage calculation model corresponding to the target coordinate axis is determined. The first control voltage is determined based on the control voltage calculation model and fused with the disturbance voltage to obtain the final control voltage. This achieves high-precision current decoupling control of the PMSM, improving control accuracy and efficiency.

The invention provides a control method and a controller of an uninterruptible power supply (UPS), the control method is used for controlling the UPS to switch from a mains supply mode to a battery mode, the control method comprises voltage loop control and current loop control, the voltage loop control provides a current control signal based on the comparison of a bus voltage sampling value and a bus voltage given value of the UPS, and the current loop control provides a current control signal based on the comparison of the bus voltage sampling value and the bus voltage given value of the UPS. The current loop control provides a PWM control signal for operation of the battery mode based on a comparison of a battery current sampling value and a current given value, and the control method comprises the following steps: in a first control period of the current loop control, determining the current given value based on the current control signal and a battery current calculated value, the battery current calculation value is in direct proportion to the inversion output power of the UPS; and determining the current set value only based on the current control signal in a subsequent control period of the current loop control, the current control signal of each control period in the subsequent control period being directly related to the current set value of the previous control period.

The invention discloses a manipulator cooperative control system and method based on a servo motor, and relates to the technical field of manipulator control, and the method comprises the following steps: injecting a frequency-adjustable reference excitation signal into a servo driver ground wire of each servo shaft in a manipulator, and constructing a coupling observation basic sequence; when reference excitation signal injection is executed, ground wire instantaneous potentials of servo drivers of all servo shafts are synchronously collected in parallel, and a complete multi-shaft potential response matrix is constructed based on a coupling observation basic sequence. According to the method, the frequency-adjustable excitation signal is introduced, sparse cross-correlation and adaptive Kalman filtering are combined, identification and modeling of a cross-axis potential interference path are realized, and servo current loop control parameters are dynamically corrected, so that parasitic current interference is effectively inhibited, synchronism, stability and anti-interference robustness of multi-axis cooperative control are improved, and the method is suitable for large-scale popularization and application. The problems of response lagging and out-of-step of a traditional method are solved.

The application discloses a single-input multi-output modular multi-port power supply and a control method thereof. The power supply comprises an AC-DC conversion module, a first DC conversion module comprising a plurality of parallel first DC conversion units for providing an output in a four-quadrant operation mode, a second DC conversion module comprising a plurality of parallel second DC conversion units for providing an output in a two-quadrant operation mode, and a third DC conversion module comprising a plurality of parallel third DC conversion units for providing an output in a single-quadrant operation mode. The input ends of the first DC conversion module, the second DC conversion module and the third DC conversion module are connected in parallel to a DC bus at the output end of the AC-DC conversion module. The control method performs collaborative optimization of voltage loop control parameters, current loop control parameters and power distribution coefficients by using a multi-objective evolutionary algorithm. The application effectively improves the flexibility, expandability and stability of the multi-port modular power supply.

The invention relates to a frequency converter control method, a frequency converter, a readable storage medium and a program product. The method comprises the following steps: acquiring a power supply phase current under an alpha-beta coordinate system; determining a power supply phase voltage according to the power supply phase current; acquiring a reference voltage and a bus voltage of the output end of the rectification inverter; performing voltage loop control according to the reference voltage and the bus voltage to obtain voltage loop current; performing power control according to the voltage loop current, the power supply phase voltage and the power supply voltage, and determining a reference phase current; the power supply voltage is determined according to the power supply phase voltage; performing current loop control according to the reference phase current and the power supply phase current to obtain a target phase voltage; the target phase voltage is used for adjusting the voltage output by the rectification inverter. By adopting the method, the voltage control is accurate.

The invention discloses a fault-tolerant control system and method for a high-resistance connection fault of a three-phase permanent magnet synchronous motor, and belongs to the field of synchronous motor control, the fault-tolerant control system comprises a rotating speed loop control module, a current loop control module and an SVPWM modulation module, the rotating speed loop control module comprises an encoder and a resonant sliding mode controller, and the rotating speed loop control module is used for obtaining a target current component; the current loop control module is used for generating a voltage control signal based on a current difference value between the target current component and the corresponding real-time current component; the SVPWM modulation module is used for driving the to-be-monitored three-phase permanent magnet synchronous motor to operate based on the generated voltage control signal. According to the fault-tolerant control system and method for the high-resistance connection fault of the three-phase permanent magnet synchronous motor, the resonant sliding mode controller is adopted in the rotating speed loop, the self-adaptive notch filter is introduced into the current loop, and the torque ripple and the rotating speed fluctuation of the three-phase permanent magnet synchronous motor under the high-resistance connection fault can be effectively inhibited without additional hardware, so that the fault tolerance of the high-resistance connection fault of the three-phase permanent magnet synchronous motor is improved. And the fault-tolerant performance and the operation stability of the motor are improved.

The invention provides a control system and an anti-disturbance method of an electromagnetic bearing, a rotor position outer ring is controlled by a non-singular fast terminal sliding mode controller, external disturbance borne by the system is estimated in real time by introducing a non-linear disturbance observer, and an estimation result is fed back to a position controller for compensation; the input of the position controller is the difference value between the given position and the feedback position of the magnetic bearing rotor, and the output value is the reference value of the current loop control current; a stator coil inner ring is controlled by a nonsingular fast terminal sliding mode controller, input values of the controller comprise a current bias value + a current reference value output by a position ring and a current bias value-a current reference value output by the position ring, and an output quantity is a driving PWM signal duty ratio of a magnetic bearing stator coil; driving the PWM signal to be output to the power amplifier; the power amplifier supplies power to the stator coil; the axial thrust load sudden change anti-disturbance capability can be enhanced, it is ensured that when the thrust load suddenly changes, the magnetic bearing maintains stable suspension of the rotor, and anti-disturbance control is achieved.

The application belongs to the technical field of electric power, and provides a DC micro-grid system and a secondary control method of the DC micro-grid. The voltage compensation module, the droop control module, the steady-state current distribution compensation module, the dynamic current distribution compensation module and the voltage and current loop control module of the DC micro-grid system work cooperatively to ensure the accurate distribution of load current among different distributed power generation units, and improve the power quality and robustness of the DC micro-grid. The DC micro-grid system introduces compensation voltage to be used for bus voltage recovery and offsetting the influence of line resistance on the steady-state current distribution accuracy. The voltage and current loop control module adopts a cascaded voltage and current loop control mode to ensure that the output voltage of the distributed power generation unit converter closely tracks the reference output voltage, so as to realize the accurate distribution of load current among the distributed power generation units and improve the power quality of the DC micro-grid.

This invention discloses a control method for an energy storage inverter coupled to a diesel generator, including a harmonic suppression step, a reactive power compensation step, and a bus adjustment step. The harmonic suppression step includes: dynamically adjusting the proportional control parameters of the current loop control based on the diesel generator voltage, and introducing a filtering module in the feedforward signal processing. The reactive power compensation step includes: actively outputting reactive power compensation based on load characteristics to offset the influence of capacitive loads on the diesel generator power factor. The bus adjustment step includes: real-time detection of whether the AC side voltage exhibits characteristics of the diesel generator; if so, adjusting the bus reference voltage value to a safe range close to the overvoltage protection value. This invention's control method for an energy storage inverter coupled to a diesel generator improves the adaptability of the energy storage inverter to different diesel generators.

The application discloses a rectifier current loop control system based on a fractional order phase-locked loop observer, which comprises a rectification module, a phase-locked loop module, a coordinate transformation module, a fractional order phase-locked loop control module and a PWM modulation module; the input end of the rectification module is connected with a three-phase power grid voltage, and the output end outputs a direct current voltage; the input end of the phase-locked loop module is connected with the three-phase power grid voltage, and the output end outputs an electric angle and is connected with the input end of the coordinate transformation module and the input end of the PWM modulation module; the input end of the coordinate transformation module is connected with the output end current of the rectification module, and the output end is connected with the input end of the fractional order phase-locked loop control module; the fractional order phase-locked loop control module is connected with the PWM modulation module; and the PWM modulation module is connected with the rectification module. Compared with a traditional linear extended state observer, the fractional order phase-locked loop observer designed in the application has more obvious effects of suppressing resonance peaks and reducing current harmonic content, and has strong adaptability to parameter changes of the system.

The present application relates to the technical field of double three-phase permanent magnet synchronous motor harmonic current control, and discloses a double three-phase permanent magnet synchronous motor harmonic current control method and device, the present application is through to the motor voltage equation implementation modeling domain conversion and discretization processing, constructs the harmonic current loop controlled object of adaptation digitization control, complex vector current regulator and low pass filter discrete domain model, combines current signal multi-dimension pretreatment and accurate regulation transformation, fully compensates the delay of digital control, effectively offsets the influence of harmonic coupling and speed correlation. Compared with the prior art, the present application avoids the adaptive deviation of continuous domain design and digital control, solves the system instability problem caused by low pass filter delay and discretization error, and ensures that the motor has high harmonic current control precision and fast dynamic response in the full speed range.

The invention discloses a buck-boost topology-based power stabilizing power converter, which comprises a direct-current voltage-stabilized power supply, a battery pack and a control circuit, and is characterized in that a buck-boost two-path circuit is connected in parallel between the direct-current voltage-stabilized power supply and the battery pack and is connected with the control circuit, and the buck-boost two-path circuit is connected with the direct-current voltage-stabilized power supply and the battery pack. The control circuit adopts double closed-loop control or single current loop control of a voltage outer loop and a current inner loop to realize a forward boost discharge control mode or a reverse buck charge control mode of the power converter; according to the power stabilizing power supply converter, the use amount of power devices is reduced, the overall cost and loss of the power stabilizing power supply converter are reduced, the rated working efficiency of the power stabilizing power supply converter is improved, and the power stabilizing power supply converter has a boost and buck control function; and after the voltage of the battery pack reaches a set value, constant-voltage charging is adopted, so that the battery pack is prevented from being overcharged or not fully charged.

The invention discloses a single-input multi-output modular multi-port power supply and a control method thereof. The power supply comprises an alternating current-direct current conversion module; the first direct current conversion module comprises a plurality of first direct current conversion units which are connected in parallel and is used for providing output of a four-quadrant operation mode; the second direct-current conversion module comprises a plurality of second direct-current conversion units which are connected in parallel and is used for providing output of a two-quadrant operation mode; the third direct-current conversion module comprises a plurality of third direct-current conversion units which are connected in parallel and is used for providing output of a single-quadrant operation mode; the input ends of the first DC conversion module, the second DC conversion module and the third DC conversion module are connected in parallel with a DC bus at the output end of the AC-DC conversion module. According to the control method, collaborative optimization of a voltage loop control parameter, a current loop control parameter and a power distribution coefficient is carried out by adopting a multi-objective evolutionary algorithm. The flexibility, the expandability and the stability of the multi-port modular power supply are effectively improved.

The utility model discloses a current sharing circuit of a multi-phase interleaved switching power supply, which comprises an outer loop control circuit, a voltage division circuit, a plurality of average current loop control circuits and a plurality of peak current-limiting protection circuits, and is characterized in that the output end of the outer loop control circuit is connected with the input end of the voltage division circuit; the output end of the voltage division circuit is respectively connected with the input ends of the plurality of average current loop control circuits, and the average current loop control circuits are connected with the peak current-limiting protection circuit. According to the utility model, double-loop control of the voltage loop and the current loop is adopted, the output of the outer loop control circuit is used as an instruction of the mean value current loop control circuit through the action of the voltage division circuit, current instructions obtained by each phase are the same, and the mean value current loop control circuit adopts a mean value control mode. The average value of the actual current of each phase is close to the average value of the instruction current, the current difference between the phases is small, and the current sharing of the control circuit can be ensured and the safe work of the circuit can be ensured in cooperation with respective peak current protection.

The invention relates to a distributed servo motor control architecture and method based on a cloud License. The problem that in the prior art, a servo system cannot achieve balance between real-time performance and flexible subscription is solved. The system comprises an integrated intelligent motor, a motor main body, an encoder, a power conversion module and a current loop control unit are integrated in the integrated intelligent motor, and the current loop control unit executes current closed-loop operation in a first period; the integrated intelligent motor is in communication connection with the edge gateway and executes position loop or speed loop operation in a second period; the edge gateway is in communication connection with the cloud controller through a 6G network interface or a time sensitive network TSN, the cloud controller issues an advanced control algorithm or a control parameter to the edge gateway in a License packet form, and the edge gateway is provided with a local verification module. The method has the advantages of thoroughly getting rid of the network delay constraint, reducing the one-time purchase cost of a user, realizing non-stop when the network is disconnected, and meeting the harsh availability requirement of an industrial field.

The application discloses a kind of time-sharing drive control method and system of double-winding motor, belong to motor drive technical field, method includes: each PWM period is divided into the first time period and the second time period of equal length;In the first time period, main controller executes the time-sharing drive control of main winding;In the second time period, slave controller executes the time-sharing drive control of slave winding.Adopt time-sharing drive mechanism, main winding and slave winding alternate work each occupies half PWM period, main and slave winding are all involved in output, average share work, can make full use of the output capacity of two windings, avoid the waste of the ability of standby winding, while it can avoid local overheating, thermal balance is good;At the same time, adopt time-sharing drive mechanism, main and slave winding asynchronous output, avoid current imbalance problem, without complex current loop control, reduce system cost and control algorithm is simple.