180 results about "Current regulator" patented technology

The invention relates to a method for improving the grid-connected stability of a grid-forming type inverter based on inductive current feedforward and coupling enhancement, and belongs to the technical field of inverter control. The method comprises the following steps: measuring inverter port voltage and filter inductive current, and calculating output active power and reactive power; calculating a port voltage reference value according to the amplitude and phase angle reference of the port voltage generated by the active controller and the reactive controller respectively; and taking the port voltage as a feedback value of the voltage regulator, and subtracting the feedback value from the port voltage reference value to serve as the input of the voltage regulator. And then adding the feedforward inductive current to the output of the voltage regulator to obtain a current reference value, and subtracting the inductive current from the current reference value to serve as the input of the current regulator. And finally, the output of the current regulator is added with the feedforward port voltage and combined with the cross-coupling enhanced voltage to obtain a modulation signal, and the modulation signal is subjected to space vector modulation to generate a driving signal so as to control the inverter. According to the method, on the premise that hardware cost and software complexity are not increased, the stable operation capacity of the grid-forming inverter under the strong power grid working condition is improved.

The invention relates to the technical field of backlight control, in particular to an LED display-oriented adaptive PWM backlight control method and a backlight driving system, which are suitable for the backlight driving system comprising a boost converter, a brightness controller and an LED channel, and the method comprises the following steps: the brightness controller outputs a control voltage, a peak current control word and a duty ratio signal, and receives a state signal. Receiving brightness data, determining a nominal peak current and a duty ratio, and initializing the nominal peak current and the duty ratio; adjusting the control voltage to change the boost output, monitoring the state, locking the working point when all states are converted from the first state to the second state, and taking the final switching channel as a reference; a peak current word is increased for the non-reference channel under the working point, and when the state returns to the first state from the second state, an optimized peak current is taken back; and adjusting the duty ratio according to the ratio of the nominal peak current to the optimized peak current to enable the average current of each channel to be consistent. According to the invention, the problem that excessive voltage drop of a linear current regulator causes extra power consumption and heating and influences the brightness consistency between channels is solved.

The invention belongs to the technical field of motor control, and discloses a control method for switching an open loop to a closed loop of a permanent magnet synchronous motor, which is used for switching the permanent magnet synchronous motor from speed loop open-loop operation to rotating speed current double-closed-loop operation. Calculating an included angle delta between the shafting of the virtual synchronous rotating coordinate system dvirqvir and the shafting of the real rotor synchronous coordinate system dq; and then instantaneous switching of a command value of a current regulator, instantaneous switching of a current space voltage vector, switching of an angle variable used by coordinate transformation, initialization of a previous value of a low-pass filter, initialization of an integral term of the current regulator and initialization of an integral term of a speed regulator are executed in sequence, and open-loop switching and closed-loop switching of the permanent magnet synchronous motor are completed. According to the invention, the switching time is effectively shortened, and the switching stability and universality are improved.

System and method for controlling one or more light emitting diodes. For example, the system includes: a current regulator including a first regulator terminal and a second regulator terminal, the first regulator terminal being configured to receive a diode current flowing through the one or more light emitting diodes, the current regulator being configured to generate a sensing signal representing the diode current, the second regulator terminal being configured to output the sensing signal; a bleeder controller including a first controller terminal and a second controller terminal, the first controller terminal being configured to receive the sensing signal from the second regulator terminal, the bleeder controller being configured to generate a first bleeder control signal based at least in part on the sensing signal, the second controller terminal being configured to output the first bleeder control signal.

The invention discloses a motor control method, device and equipment and a medium, and relates to the field of motor control, when a mode switching condition is met, switching operation is not executed immediately, and the switching time is set at the commutation time of a motor, so that natural transition of a phase angle of a reference voltage vector is ensured; meanwhile, based on the running state of the motor in the first control mode, an integral initial value of the current regulator in the second control mode is preset, so that smooth connection of the amplitude of the reference voltage vector is realized. Through cooperative control of the phase angle and the amplitude, the problems of unstable motor operation, speed fluctuation, equipment stress damage and the like caused by discontinuous jump of the reference voltage vector at the switching point are solved, and the effect of improving the motor control performance and the system operation reliability is achieved.

The invention discloses a whole vehicle electric drive resolver zero position identification and whole vehicle electric drive resolver zero position self-inspection method, and relates to the field of new energy electric drive control systems.The whole vehicle electric drive resolver zero position identification method comprises the steps that a direct-axis current instruction and a quadrature-axis current instruction are generated by receiving a torque instruction of a whole vehicle controller; sampling a motor phase current and performing coordinate transformation to obtain a feedback current; inputting the current instruction and the feedback current into a current regulator, and outputting direct-axis and quadrature-axis voltage components; injecting a high-frequency square-wave voltage signal into the direct-axis voltage component to generate a synthesized direct-axis voltage component, and performing PWM (Pulse-Width Modulation) to generate a driving signal; sampling the phase current again, extracting the high-frequency quadrature-axis response current, calculating the rotor position deviation, and inputting the rotor position deviation into the position observer to obtain the absolute position information of the rotor; wherein the PWM wave sending time sequence is aligned with the phase current sampling time sequence. According to the invention, the precision and efficiency of whole vehicle electric-drive rotary transformer zero position identification can be improved.

The present invention belongs to the technical field of motor fault control, and discloses a fault-tolerant control method for a common bridge arm in a semi-centralized open winding drive system. This fault-tolerant control method is aimed at the open-phase fault of the common bridge arm of the inverter in the semi-centralized open winding. The fault-tolerant control method includes the following steps: calculating the thrust command of the motor using a speed regulator; converting the thrust command into the dq0-axis synchronous current command of the motor; calculating the dq0-axis synchronous voltage command of the motor using a current regulator in combination with the actual dq0-axis current of the motor, transforming the dq0-axis synchronous voltage command of the motor into the symmetric abc-phase voltage command in the abc three-phase coordinate system, and distributing the symmetric abc-phase voltage command to each inverter. The present invention can achieve fault tolerance for the open circuit of the common bridge arm in the semi-centralized open winding drive system. At the same time, compared with the traditional open circuit fault-tolerant control strategy, the present invention can reduce the system loss and phase loss and improve the torque output ability of the fault system.

The smart torque simulation device includes: a bracket; a shaft center; a winding wheel which having a winding wheel spinning encoder; an outer flywheel which an outer flywheel spinning encoder, the winding wheel and the outer flywheel are relatively coupled with a magnetic plate and a magnet; an inner flywheel with a field magnet, the inner flywheel has a power transmission relationship with the outer flywheel; a coil set, having a coil fixing frame which has an armature coil, and the armature coil is coupled to the field magnet of the inner flywheel, the armature coil has an electric current regulator; and a control system, receiving a winding wheel spinning data from the winding wheel spinning encoder and receiving an outer flywheel spinning data from the outer flywheel spinning encoder, and then sending an armature electric current control data to the electric current regulator.

The application discloses a kind of self-adaptive power energy storage converter control method and system, this method can effectively solve the problem of overvoltage and under-voltage of grid-connected point and overcharge and overdischarge of energy storage battery by controlling the adaptive charge and discharge of energy storage battery.First, the grid voltage is sampled and the effective value is processed to obtain the grid voltage effective value feedback signal U gf_rms , and it is sent to the inverting input end of voltage error amplifier, and the grid voltage reference U ref Is sent to the non-inverting input end of voltage error amplifier.The output U e Of voltage error amplifier is obtained by positive and negative limiting link U e1 Is sent to one input end of multiplier.The state signal J of range determination is obtained by the state of charge signal Soc of energy storage battery, and the other input end of multiplier is sent.The output I ref Of multiplier is sent to the non-inverting input end and inverting input end of current regulator respectively with the charging current sampling signal I bf Of energy storage battery.The output of current regulator is used as modulation signal, and it is sent to PWM modulator.

The application provides a real-time monitoring device and method for air supplement amount of a Francis turbine unit of a hydropower plant, and relates to the field of Francis turbine units of hydropower plants.The device comprises a thermistor, an air supplement pipe, a current generator, a thermistor temperature sensor, a current regulator and a wind speed regulator, wherein the thermistor is fixed in the middle of the air supplement pipe, and the current generator generates rated voltage to heat the thermistor; the current regulator is used for real-time measurement of output current of the thermistor and records the change frequency of the output current; the wind speed regulator is used for measurement of wind speed at the air supplement pipe opening; and the thermistor temperature sensor is used for measurement of the temperature of the thermistor. The application fixes the thermistor in the air supplement pipe, determines the relationship curve between the air supplement amount and the output current, solves the problem that the air supplement amount of the Francis turbine unit cannot be monitored, and uses the thermistor principle to realize accurate measurement, is durable and not easy to be damaged, is convenient to install, can be introduced into a monitoring system, and can be monitored in real time on a host computer.

The application relates to the technical field of photovoltaic equipment detection, in particular to a testing device for photovoltaic engineering protection equipment and a method thereof, which comprises a stand, a photovoltaic frame, a photovoltaic panel group arranged on the photovoltaic frame, a plurality of overcurrent testing groups arranged on one side of the top of the stand; the photovoltaic panel group comprises a plurality of photovoltaic panels installed on the photovoltaic frame, a turnover group installed between the middle part of the stand and the photovoltaic frame and a servo cylinder; the servo cylinder drives the turnover group to drive the photovoltaic frame to turn over and unfold; the overcurrent testing group comprises a fuse connected in series with a row of photovoltaic panels, a current regulator and a short-circuit generator connected in parallel to the electrodes of the current regulator. The turnover group driven by the servo cylinder is linked with the photovoltaic frame, the inclination angle of the photovoltaic panel is adjusted and the photovoltaic panel is stored, the lower support frame and the upper support frame are cooperatively driven by the servo cylinder, the photovoltaic frame can be unfolded to 30 DEG to 90 DEG to receive light or be folded to reduce the occupied space, and the photoelectric output characteristics of the photovoltaic panel in a real scene are simulated.

The utility model discloses a real-time positioning system for implanting a catheter in a potential guiding sheath. The real-time positioning system comprises a positioning electrode plate, a potential guiding instrument and a guide wire body, the positioning electrode plate comprises an adhesive tape adhered to the body of a patient and a plurality of electrode plates arranged on the adhesive tape; the potential guiding instrument comprises a shell, positive and negative electrodes, a current change display and a voltage and current regulator are arranged on the shell, and a current signal receiver and a signal amplifier are arranged in the shell; the guide wire body comprises an insulating sleeve and a metal guide wire arranged in the insulating sleeve, the front end and the rear end of the insulating sleeve are closed, and a plurality of through holes are formed in the side wall; the head end of the metal guide wire is exposed, and the other part is wrapped by the insulating layer. The positioning electrode plate and the wire guide body are respectively connected with positive and negative electrodes to form a closed loop. The intrathecal infusion system solves the problems that in the implantation operation process of the intrathecal infusion system, the position of the catheter needs to be adjusted in a perspective mode repeatedly, real-time monitoring cannot be achieved, and the developing quality is not high, operation precision and efficiency are improved, and the X-ray exposure amount of a patient is reduced.

The present application relates to a kind of permanent magnet shielding motor vector control energy efficiency optimization method considering magnetic field lagging phase angle, belong to permanent magnet shielding motor control field.It is characterized by: by analyzing shield sleeve eddy current effect, the analytical expression of magnetic field lagging phase angle is derived using electromagnetic field theory;The lagging phase angle is introduced into permanent magnet flux linkage term to be corrected, and the eddy current loss of shield sleeve and stator iron loss are combined into equivalent iron loss component, and a system controllable loss model is constructed;Under the constraint of constant torque, the analytical expression of total controllable loss about direct-axis current is derived and the optimal direct-axis current given value is solved.The actual application introduces angle compensation in the coordinate transformation link of vector control system, and the optimal direct-axis current given value is sent into current regulator, the accurate decoupling of dq axis current is realized, the total loss of motor is reduced, so as to improve the overall efficiency of motor control system.

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.

A method for operating a renewable energy source having an inverter-based resource (IBR) system connected to a power grid, the method comprising: operating the IBR system as a virtual synchronous machine (VSM) in a grid formation mode (GFM) control; deriving a power error signal (PERR) between an actual real power output (Pfbk) and a power reference (Pref) from the IBR system; using a power error signal (PERR) to generate a power angle command signal received by the voltage regulator with the inertial power regulator; generating, with a voltage regulator, an x-direction current command (IRCmdx) signal and a y-direction current command (IRCmdy) signal, both the x-direction current command (IRCmdx) signal and the y-direction current command (IRCmdy) signal being received by a current regulator; and generating and adding an incremental x-direction current ([delta] IRx) component to the (IRCmdx) signal.

The disclosure relates to a battery system. The battery system comprises a first battery cell unit and a second battery cell unit, each one comprising a respective current regulator arrangement configured to control charging of a respective battery cell unit. The battery system further comprises a control arrangement. The control arrangement is configured to selectively control charging of the first and second battery cell units, by controlling the current regulator arrangement of the first battery cell unit to charge the first battery cell unit, and simultaneously by controlling the current regulator arrangement of the second battery cell unit to heat said second battery cell unit. The heating is performed by a pulsed charging cycle, preferably wherein the pulsed charging cycle is delivered by pulses having a frequency of 1 Hz – 1 MHz, preferably 10 Hz – 100 kHz. The disclosure further relates to a computer program and a computer-readable medium.

The invention discloses a position-sensorless control method and system for an electro-magnetic doubly salient generator, and belongs to the technical field of motor control. The method comprises excitation control and armature control, the excitation control maintains the DC bus voltage stable through a voltage and current regulator closed loop, and the armature control only detects A and B phase voltages; according to the method, an electric cycle is divided into three sectors, the sectors correspond to different conduction switch tubes, the sectors are judged by calculating the two-phase voltage difference value in real time and according to threshold logic, the corresponding switch tubes are triggered to be combined and conducted according to the judgment result of the sectors, and a current loop is managed by combining the diode clamping effect. Meanwhile, DC bus voltage is continuously monitored for excitation dynamic adjustment, and a sector state flag bit is utilized to ensure synchronization of rotor position tracking and switch action; according to the method, the position of the rotor sector is mapped through the two-phase voltage difference value, a position sensor and a current sampling circuit are omitted, the complexity and cost of the system are reduced, and the control precision and the anti-interference capability are both considered.

The application discloses a current source inverter high-speed permanent magnet synchronous motor control method and system based on LADRC, and the system part comprises a position estimation module, a rotating speed regulator, a current sensor, a voltage sensor, a coordinate transformation matrix, a current regulator, a current generation module and a space vector pulse width modulation module; the control method part calculates an inverter current reference value through design of a second-order LADRC current regulator, realizes d-q axis decoupling in the regulator, improves the dynamic performance of the current source inverter, effectively reduces current harmonics, and improves the anti-interference ability and robustness of the system. The application can not only solve the system instability problem caused by high control order and serious coupling of the motor under high-speed working conditions, improve the robustness and dynamic performance of the system, but also solve the problems of high cost and low reliability of the traditional position sensor under high-speed operation, reduce the hardware cost of the system, and speed up the response speed. The application relates to motor control technology.

On-board electrical system arrangement (2) comprising at least one primary on-board electrical system (4) and one secondary on-board electrical system (5) for supplying a plurality of consumers (10.n) in a vehicle (1), characterized by the fact that the primary electrical system (4) for providing primary power (4.11) for supplying consumers (10.n) can be coupled to an electrical system battery (3) or is coupled and the secondary on-board network (5) is coupled to the on-board network battery (3) to provide a secondary power supply (5.11) for the redundant supply of a part (11.nm) of the consumers (10.n). wherein a switchable balancing device (8) is arranged between the primary electrical system (4) and the secondary electrical system (5), which couples or keeps coupled or decouples or keeps decoupled the primary electrical system (4) and the secondary electrical system (5) depending on the power supply, wherein in normal operation (100) of primary on-board network (4) and secondary on-board network (5) the balancing device (8) is open in order to decouple the primary on-board network (4) and the secondary on-board network (5) from each other, wherein in the coupled state of primary on-board network (4) and secondary on-board network (5) a current regulator for providing the primary power (4.11) is provided in the primary on-board network (4) as a regulator (20) and a voltage regulator for providing the secondary power (5.11) is provided in the secondary on-board network (5) and in the uncoupled state both in the primary on-board network (4) and in the secondary on-board network (5) a voltage regulator for providing the primary power (4.11) and the secondary power (5.11) is provided as a regulator (20, 22).

The invention discloses a control method for background harmonic suppression and positive active damping area expansion of a converter, and belongs to the technical field of grid-connected inverters, and the method comprises the steps: calculating a current preset value according to an obtained phase angle of a power grid voltage value; inputting a difference value between the current preset value and a power grid side current value obtained in advance into a current regulator to generate a current regulation output quantity; inputting the obtained capacitor voltage value into a feedback branch containing a proportional term function, a primary differential term function and a secondary differential term function to generate a feedback quantity; superposing the current regulation output quantity and the feedback quantity, and generating a modulation signal through a preset delay link and the ratio of the direct current side voltage of the inverter to the triangular carrier amplitude; comparing the modulation signal with a pre-obtained triangular carrier wave, and generating a control signal of an inverter bridge switch tube through sine pulse width modulation; according to the invention, the time delay problem in capacitor voltage full-feedback control is solved by expanding the range of the positive active damping region and suppressing harmonic waves.

The utility model relates to the technical field of mobile power supplies with an electric welding function, and discloses a mobile power supply with an electric welding function, which comprises a box body, a power supply liquid crystal display screen, a socket and a USB (Universal Serial Bus) socket, and a power supply liquid crystal display screen, a socket and a USB socket are sequentially arranged on the inner wall of the first groove from top to bottom. The power supply liquid crystal display screen, the socket and the USB socket are arranged on the right side of the box body, and the electric welding liquid crystal display screen, the electric welding output head and the current regulator are arranged on the left side of the box body, so that the power supply device can supply power to daily electric equipment; the power supply can also be connected with engineering equipment such as electric welding machines and provide stable and long-acting voltage, so that the defect that an outdoor mobile power supply on the market can only supply power to daily electric equipment but cannot supply power to the engineering equipment such as electric welding machines is overcome to a certain extent.

An audio converter power supply is provided with a cascade regulator comprising a current regulator (140) in an inner loop, which operates in the audio frequency range, and a voltage regulator (150) in an outer loop, which only operates below the audio frequency range and essentially does not operate in the audio frequency range. The audio frequency range is between 20 Hz and 22 kHz.

The on-board power supply arrangement (2) comprises at least one primary on-board power supply (4) and an independent secondary on-board power supply (5) for supplying a plurality of consumers (10.n) in a vehicle (1), wherein the primary on-board power supply (4) is or can be coupled to an on-board power supply battery (3) for providing a primary power (4.11) for supplying the consumers (10.n), and the secondary on-board power supply (5) is or can be coupled to provide a secondary power (5.11) for redundantly supplying some (11.nm) of the consumers (10.n) is coupled to the on-board power supply battery (3), wherein a switchable balancing device (8) is arranged between the primary on-board power supply (4) and the secondary on-board power supply (5), which, depending on the power, couples the primary on-board power supply (4) and the secondary on-board power supply (5) to one another or keeps them coupled or decouples them or keeps them decoupled from one another, wherein in normal operation (100) of the primary on-board power supply (4) and the secondary on-board power supply (5), the balancing device (8) is open in order to decouple the primary on-board power supply (4) and the secondary on-board power supply (5) from one another, and wherein in the coupled state of the primary on-board power supply (4) and the secondary on-board power supply (5), a current regulator for providing the primary power (4.11) acts as a regulator (20) in the primary on-board power supply (4) and, in the uncoupled state, a voltage regulator for providing the primary power (4.11) and the secondary power acts as a regulator (20, 22) in both the primary on-board power supply (4) and the secondary on-board power supply (5) (5.11) are provided.

The invention discloses a method, a device and a system for estimating the position of a low-speed rotor of an alternating-current synchronous motor. The method comprises the following steps: (1) injecting a rotating high-frequency voltage signal into a motor estimation synchronous rotating coordinate system to obtain a high-frequency current response under the estimation synchronous rotating coordinate system, calculating an amplitude expression of the high-frequency current response, and observing rotor position information contained in a current amplitude; and (2) performing coordinate transformation on the high-frequency current response under the estimated synchronous rotating coordinate system, enabling a transformed current amplitude expression to contain a sinusoidal quantity of rotor position deviation information, and constructing a phase-locked loop in combination with a corresponding current amplitude extraction method so as to estimate the rotor position. Compared with an existing rotating high-frequency voltage injection method, the method has the advantages that the rotor position estimation error under the influence of stator resistance, induced electromotive force, a filter, a PI current regulator and digital control delay can be reduced, and high position estimation precision can be kept under different steady-state rotating speeds.

The invention relates to the technical field of electric energy conversion and control, and provides a bus voltage fluctuation suppression system and method based on voltage ANF orthogonal phase shift compensation. The system comprises a direct-current bus, a common direct-current bus open winding power converter electrically connected with the direct-current bus, a direct-current bias vernier reluctance generator electrically connected with the common direct-current bus open winding power converter, and a control loop. The control loop comprises a voltage self-adaptive notch filter detection module, a 0-axis current self-adaptive notch filter controller, a current distribution module, a dq-axis current regulator, a rotary / static coordinate transformation module, a pulse width modulation module and a voltage / current signal processing module. The method has the effect of improving the bus voltage quality and the operation stability of a power generation loop.

The invention relates to a system and method for operating a vehicle. The system includes an inverter, a motor, and a sensor for measuring a phase current between the inverter and the motor in a first phase cycle in which the inverter is operated at a first voltage. The processor predicts an observation phase current and an original interference voltage of the second phase cycle according to the phase current, calculates a damping voltage correction of the second phase cycle according to the observation phase current, and calculates an interference voltage correction of the second phase cycle according to the original interference voltage. Calculating a final voltage in the second phase cycle from the core current regulator voltage, the damping voltage correction, and the disturb voltage correction, calculating a second voltage in the first phase cycle by applying a delay to the final voltage in the second phase cycle; and applying a second voltage at the inverter.

The present disclosure relates to an inverter operating at a high switching frequency and a method for operating an inverter. A motor controller performing a current regulator and a modulation routine in separate update intervals provides an improved fundamental voltage waveform to a motor controlled by the motor controller. The current regulator is performed at a first periodic update rate and the modulation routine is performed at a second periodic update rate, where the frequency at which the modulation routine is performed is at least twice the frequency at which the current regulator is performed. Performing the current regulator and the modulation routine at different frequencies results in the current regulator generating a single voltage reference signal over multiple cycles of the modulation routine. To reduce voltage ripple caused by decoupling the performance of the current regulator and the modulation routine, the motor controller extrapolates the voltage reference generated by the current regulator as multiple voltage reference signals, where a unique voltage reference signal is provided for each cycle of the modulation routine.

An NMR device (10) having an NMR magnet system for generating an NMR magnetic field, the NMR magnet system comprising an NMR coil (11) for modifying the magnetic field, and the NMR device having a stable and low noise current source, the current source supplying a current to the NMR coil, and the current source comprising a linear current regulator (12), the linear current regulator is electrically connected to a first end of the NMR coil, characterized in that the current source comprises a digital voltage source (13) employing switching technology, the digital voltage source is electrically connected to a second end of the NMR coil such that the NMR coil is connected as an electrical load between the linear current regulator and the digital voltage source, the current regulator (12) is connected to the digital voltage source (13) by means of a regulating line (14) for regulating the voltage, and the linear current regulator regulates the digital voltage source such that the voltage on the linear part side of the arrangement lies within a preselected operating range, as little electric power is consumed in the linear part of the arrangement. As a result, the NMR coil can be adjusted at high electrical efficiency, stably supplied with current with low noise, in which this long uniformity of NMR remains stable and constant even under varying external conditions.

The present invention relates to an energy storage device having a switchgear housing, wherein a plurality of accommodation spaces are provided in the switchgear housing, wherein at least one control device and a variable number of energy storage blocks can be interchangeably accommodated in the plurality of accommodation spaces, wherein the energy storage blocks can be selectively connected in series or in parallel with each other and connected to power supply terminals via current regulators. Therefore, it is first proposed that the control device installed in the switchgear housing and the power electronics connected thereto are themselves reconfigurable or variable, so that the control device and the power electronics can be adapted to different operating modes or other applications without having to replace the control device and the power electronics and perform corresponding wiring.