86 results about "Balanced circuit" patented technology

The embodiment of the utility model discloses a cascode cascade device which is applied to the technical field of semiconductor manufacturing. In a cascode cascade device, a source electrode and a grid electrode of a low-voltage enhanced field effect transistor are respectively used as a source electrode end and a grid electrode end of the cascade device, and a drain electrode of a high-voltage enhanced field effect transistor is used as a drain electrode end of the cascade device, so that a balancing circuit and an adjusting circuit can be integrated on the low-voltage enhanced field effect transistor; and the balancing circuit and the adjusting circuit only relate to the resistor and the diode, and when the resistor and the diode are integrated on the low-voltage enhanced field effect transistor, only one mask needs to be added, so that the process cost is relatively low. And redundant devices do not need to be integrated on the high-voltage field-effect tube in the cascade device, so that the area of the high-voltage field-effect tube is saved, and the overall cost of the cascade device is relatively low.

The application describes a method for balancing voltages on a first and a second DC conductor in a DC grid using a balancing circuit with a first and second semiconductor switch connected in series between the first and second DC conductors, and a connection to a ground potential that is arranged between the first and second semiconductor switches. In the presence of an asymmetry in the voltages of the first and second DC conductors to ground potential, a compensation current is generated between at least one of the DC conductors ground potential via at least one of the semiconductor switches, with the asymmetry in the voltages being reduced by the compensation current (IA), with the voltages of the DC conductors to ground potential being balanced.

The invention relates to the technical field of power supplies, and discloses a bidirectional uninterruptible power supply system with a bus neutral-point balance circuit and a control method, the bidirectional uninterruptible power supply system comprises a static bypass unit, a power conversion unit and a controller, a first end of the static bypass unit is connected to an external power grid, and a second end is used as a power grid output end; the first end of the power conversion unit is connected with the energy storage device, the second end of the power conversion unit is connected with the power grid output end of the static bypass unit to form an alternating-current connecting end connected with a load, the power conversion unit comprises a three-level bidirectional DC / AC module, a direct-current bus and a bus neutral-point balance circuit, and the bus neutral-point balance circuit is coupled with the direct-current bus. The direct-current bus comprises a first capacitor and a second capacitor; the controller is configured to control the operation logic of the bus neutral-point balancing circuit according to the voltage difference between the first capacitor and the second capacitor so as to clamp the neutral-point potential of the DC bus. The architecture topology is simple, and the operation stability and the power supply reliability under multiple working conditions are improved.

Circuit embodiments for a switched-capacitor power converter, and / or methods of operation of such a converter, that robustly deal with various startup scenarios, are efficient and low cost, and have quick startup times to steady-state converter operation. Embodiments prevent full charge pump capacitor discharge during shutdown of a converter and / or rebalance charge pump capacitors during a startup period before switching operation by discharging and / or precharging the charge pump capacitors. Embodiments may include a dedicated rebalancer circuit that includes a voltage sensing circuit coupled to an output voltage of a converter, and a balance circuit configured to charge or discharge each charge pump capacitor towards a target steady-state multiple of the output voltage of the converter as a function of an output signal from the voltage sensing circuit indicative of the output voltage. Embodiments prevent or limit current in-rush to a converter during a startup state.

A method for operating a power converter and a power converter are disclosed. The method includes regulating a common mode voltage at an output node of the power converter. The power converter includes: a first input node receiving a first input voltage; a second input node receiving a second input voltage; a first intermediate capacitor connected between the first intermediate node and the midpoint; a second intermediate capacitor connected between the midpoint and the second intermediate node; a first output capacitor connected between the first output node and the midpoint; a second output capacitor connected between the midpoint and a second output node; an input converter coupled to a first input node, providing an intermediate voltage between a first intermediate node and a second intermediate node; a first output converter coupled between the first intermediate capacitor and the first output capacitor; a second output capacitor coupled between the second intermediate capacitor and the second output capacitor; and a balancing circuit coupled to the first intermediate capacitor and the second intermediate capacitor.

An integrated circuit includes a sigma-delta modulator coupled to a receive electrode of a capacitive touch screen sensor and including a first single-ended integrator and a second single-ended integrator selectively coupled to an output of the first single-ended integrator. A latch is coupled to an output of the second single-ended integrator and driven by a frequency modulation signal. A balancing circuit is selectively coupled to a first input of the first single-ended integrator and to a second input of the second single-ended integrator. Logic is coupled to the balancing circuit and causes, based on the frequency modulation signal and an output value of the latch, the balancing circuit to one of: apply a positive balancing current to the first input and a negative balancing current to the second input; or apply a positive balancing current to the second input and a negative balancing current to the first input.

The utility model discloses a low-harmonic high-power-factor silicon controlled rectifier dimming and toning circuit, and relates to the technical field of circuits. Comprising a silicon controlled rectifier dimmer, the silicon controlled rectifier dimmer is connected with the L end of a power supply, the silicon controlled rectifier dimmer is also connected with an input anti-surge circuit through a protection circuit, the N end of the power supply is also connected with the input anti-surge circuit, the input anti-surge circuit is connected with a bridge rectifier circuit in parallel, and the positive electrode of the bridge rectifier circuit is connected with a constant current control circuit. The constant current control circuit is connected with the constant current reference sampling circuit, and the constant current reference sampling circuit is respectively connected with the first full balance circuit, the second control step-down power supply circuit, the second warm light LED lamp bead, the second cold light LED lamp bead, the second filter circuit and the second bleeder circuit. The dimming and color temperature adjusting device can be used for dimming and color temperature adjusting occasions of an alternating-current or direct-current silicon controlled rectifier dimmer and can also be used for dimming and color temperature adjusting occasions by adjusting input voltage through direct current.

A module antenna for use with a battery cell in a battery pack is provided. The module antenna enabling wireless communication between an electronic device coupled to the battery cell and a bus antenna. The module antenna comprises: a transmission line operatively coupled to the electronic device at one end and to at least one antenna at its other end, the at least one antenna enabling electro-magnetic coupling with the bus antenna, the at least one antenna having a plurality of sections arranged in series forming an unbalanced electrical path and being coupled to a termination resistor at its distal end. The module antenna further comprises at least one capacitive element located between the transmission line and the termination resistor, the capacitive element and the at least one antenna having a resonant frequency matched to an operating frequency of a desired transmission signal.

The application relates to a linear thyristor light-adjusting full-voltage constant-power input circuit, wherein a thyristor light adjuster is arranged in communication with an external voltage in front of an input protection circuit, a bridge rectifier circuit is arranged at the rear end of the input protection circuit, an output end of the input protection circuit is connected with a voltage conversion detection circuit, the voltage conversion detection circuit is connected with a full-voltage control circuit, a power supply resistor R11 is connected with the output end of the bridge rectifier circuit, the power supply resistor R11 is connected with the full-voltage control circuit, a series-parallel conversion circuit is connected with the full-voltage control circuit, and an isolation circuit is connected with the series-parallel conversion circuit, wherein four groups of full-balance circuits, reference position circuits, lamp string circuits and filter circuits are arranged respectively, the full-balance circuits, the reference position circuits and the lamp string circuits are connected correspondingly, the filter circuits are connected in parallel at both ends of the lamp string circuit, and the isolation circuit is connected between the full-balance circuit and the reference position circuit. The input circuit can realize full-voltage constant-power input, has strong universality and low cost.

The invention relates to a power combiner (1) for coupling RF signals, in particular designed for a plasma processing supply system and a plasma processing system, the power combiner (1) being designed for a predefined operating frequency range with frequencies in the range of 2 MHz to 200 MHz, in particular in the range of 10 MHz to 50 MHz, the invention relates to a power combiner designed for output power > = 2 kW, preferably output power > = 4 kW, comprising: e) a plurality of inputs (In1 to In4) designed for connecting RF power amplifier stages (AS1 to AS4); f) a main output (OUT); g) a plurality of coupling elements, in particular in the form of inductors (L1 to L4), each coupling element connecting one input (In1 to In4) to the main output (OUT); h) a balancing circuit (B) connecting the inputs (In1 to In4) to each other, having: iii) an energy absorber, in particular in the form of resistors (R1 to R4), and a balancing line (W1 to W4), having a fixed characteristic impedance and a length of this,

The utility model discloses a red lamp pearl voltage drop balance circuit, including commercial power input circuit and transformer circuit, the output of transformer circuit is connected with constant voltage constant current circuit, and the output of constant voltage constant current circuit is parallel with red light lamp pearl control circuit, white light lamp pearl, green light lamp pearl and blue light lamp pearl, still be provided with control drive circuit, control drive circuit is connected with red light lamp pearl control circuit, white light lamp pearl, green light lamp pearl and blue light lamp pearl respectively. The utility model discloses the structure is reasonably set, reduced the use of resistance, is favorable to reduce cost, reduces the waste of power supply, is provided with red light lamp pearl control circuit, and it only needs to separately carry out DC-DC constant current control to red light lamp pearl, can separately adjust and control the forward voltage drop of red light lamp pearl, does not need extra resistance series connection again, can guarantee the illumination of red light lamp pearl under the condition of lower input power, improves the utilization of power supply, can reduce the volume of lamp body.

An isolated converter with magnetic bias balance control includes an isolated converter, a controller, and a magnetic bias balance circuit. The isolated converter includes a transformer, and the primary side of the transformer includes a primary winding and at least one switching arm. The controller is coupled to at least one switching arm and provides a pulse width modulation (PWM) signal group to control the at least one switching arm. The magnetic bias balance circuit is coupled to both ends of the primary winding and the controller, and provides a compensation voltage to the controller based on the average voltage across the primary winding. The controller adjusts the duty cycle of the PWM signal group according to the compensation voltage to correct the magnetic bias.

This AC / DC power supply comprises an AC / DC converter ACDC, a primary side DC capacitor C1, an insulated DC / DC converter DCDC, and a secondary side DC capacitor C2. The AC / DC power supply has m (m: an integer of 2 or more) cells per phase. The AC / DC power supply has a plurality of DC buses Vdc21, Vdc22 in which the plurality of secondary side DC capacitors C2 are connected in series or in parallel. The AC / DC power supply supplies the voltages of the plurality of DC buses Vdc21, Vdc22 to a load or a power supply. The AC / DC power supply outputs, during power unbalance occurring due to the states of the load or the power supply, a voltage while maintaining the voltage balance of a secondary side DC voltage and the primary side DC voltage of each cell. The AC / DC power supply achieves the voltage balance of each DC bus during the power unbalance without using an additional balance circuit or a commercial transformer with multiple windings.

The present invention discloses a piezoelectric self-sensing passive vibration suppression control circuit and method based on switching stiffness, which includes a piezoelectric module, a bridge balance circuit, and a control circuit. The piezoelectric module comprises two piezoelectric units symmetrically arranged on both sides of the vibration suppression object, and each piezoelectric unit contains N piezoelectric bodies connected in parallel; the bridge balance circuit separates the electrical signals generated by the piezoelectric bodies into self-sensing signals for monitoring the electrical state and vibration state of the piezoelectric bodies and control signals for controlling the electrical boundary conditions of the piezoelectric bodies, and the control circuit is used to switch the system stiffness. The present invention achieves the vibration suppression effect by switching the equivalent system stiffness, which belongs to the passive vibration suppression method and does not require external energy input to the system. It has the advantages of environmental protection, convenience, wide application range, strong reliability, and real-time monitoring, and has good application prospects.

The utility model provides a real-time parallel self-adaptive lithium battery pack device, which comprises a plurality of lithium battery packs connected in parallel, each lithium battery pack comprises a main circuit and a control circuit, and the main circuit comprises a lithium battery, a secondary protection circuit, a main switch circuit, a balance circuit and an auxiliary power supply. The lithium battery is connected with the battery output terminal after sequentially passing through the secondary protection circuit, the main switch circuit and the balance circuit, the control circuit comprises an MCU and an isolation communication circuit, and the MCU is connected with isolation communication circuits of other lithium battery packs through the isolation communication circuit and feeds back a driving signal to the main switch circuit. And the auxiliary power supply takes electricity from the lithium battery and supplies power to the MCU and the isolation communication circuit. In conclusion, according to the real-time parallel self-adaptive lithium battery pack device provided by the utility model, not only is the intelligent level of parallel use of the battery packs improved, but also the safety, the reliability and the user friendliness of the system are remarkably enhanced.

An adaptive DC filtering circuit based on synchronous sampling and its DC filtering method, comprising an AC sampling circuit, a device power supply circuit, a DC reference circuit, a signal processing unit and a balancing circuit. The device power supply circuit is used to convert the power supply voltage into a DC voltage. The device power supply circuit is connected to the DC reference circuit and, through the balancing circuit, converts the DC voltage generated by the device power supply circuit into two identical DC reference voltages. One of the DC reference voltages is directly input into the signal processing unit, and the other DC reference voltage is superimposed on the voltage signal output by the AC sampling circuit as a DC bias signal and input into the signal processing unit. The signal processing unit synchronously samples the two input signals and performs a subtraction operation. The present invention realizes the real-time filtering function by using digital difference, has a short sampling period, is not easily affected by spectral leakage, has high precision and does not affect the processing of subsequent software algorithms.

The invention discloses a neutral-point balancing circuit, a control method, a power converter, photovoltaic equipment and an electric appliance. The neutral-point balancing circuit comprises a first switch of which the first end is connected with the first end of the output side of a rectifying circuit of the power converter; the first end of the first resistor is connected with the second end of the first switch, and the second end of the first resistor is connected with the first end of an upper bridge arm capacitor of the direct-current bus; the first end of the second switch is connected between the first switch and the first resistor, and the second end of the second switch is connected with the second end of the upper bridge arm capacitor; the first end of the second resistor is connected with the first end of the lower bridge arm capacitor of the direct current bus, and the second end is connected with the second end of the lower bridge arm capacitor. According to the invention, the function multiplexing of the resistor can be realized, that is, the dual functions of limiting the charging current and balancing the neutral-point voltage are realized through the same resistor, the number of the resistors is reduced, and the cost is reduced and the energy is saved.

An electronic device includes a plurality of batteries, a plurality of first switches (each of the first switches connected in series with a respective one of the batteries), balancing circuits, each of the balancing circuits associated with the respective one of the batteries, and one or more processors configured to control the first switches and the balancing circuits. Each of the balancing circuits includes a second switch and a transformer corresponding to the second switch, and the transformer includes a first coil and a second coil. The transformer is configured to operate in a first state in which a current is induced from the first coil to the second coil or a second state in which the first coil is short circuited, based on a signal transmitted to the second switch.

This application discloses an RF voltage balancing circuit, a filter, a chuck, and a semiconductor device. The RF voltage balancing circuit is used in a semiconductor device including a power supply and powered components. The powered components include a chuck, an upper electrode, an edge ring, and / or a temperature control link. The RF voltage balancing circuit includes at least two power supply loops and at least one filter circuit. Each power supply loop includes two power supply links. Each power supply link connects a powered component to the power supply, so that the power supply supplies power to the powered component via the power supply loop. The powered component is coupled with an RF signal. Each filter circuit allows the RF signal to pass through while blocking the power supply current, which is the current supplied by the power supply to the powered component via the power supply link. At least two of the at least two power supply loops satisfy the condition that at least one filter circuit is connected between the two power supply loops. This application can reduce RF losses and improve the efficiency and quality of semiconductor processes.

The utility model provides an amplifier with temperature compensation, and the amplifier comprises an amplifier which is provided with a signal input end and a signal output end; the resistance variable circuit is connected between the signal input end and the signal output end and is used for adjusting the resistance of the resistance variable circuit based on a control signal so as to adjust the output impedance of the amplifier; and the control signal generation circuit is used for generating the control signal changing along with the temperature and outputting the control signal to the resistance variable circuit. The utility model further relates to a balanced circuit structure for the amplifier.

The application provides a power electronic converter, a resonant balancing circuit and a control method thereof. The resonant balancing circuit is provided with a resonant component between the midpoints of the switching tubes connected to each half bus capacitor. By controlling the on-off of each switching tube, the resonant component can transfer energy to the two half bus capacitors, so as to realize voltage balance between the two half bus capacitors. Moreover, each switching tube is set to switch the on-off state when the resonant current of the resonant component is zero, so as to realize soft switching control of each switching tube and reduce the loss. In addition, only four power devices, i.e. the first to fourth switching tubes, are needed in the resonant balancing circuit, so as to avoid the problem of high cost caused by too many power devices.

Drive signals for switching stages of a multiphase electronic converter are generated as a function of a PWM signal and a current balancing circuit. The current balancing circuit receives a control clock signal and a reference clock signal from a phase shift circuit. A phase detector generates the PWM signal as a function of the control clock signal received via one or more delay lines and the reference clock signal. Specifically, a regulator circuit of the current balancing circuit varies the delay introduced by the one or more delay lines in order to balance the currents provided by the switching stages of the multiphase electronic converter.

The invention relates to a method and a balancing circuit (10) for balancing an ungrounded DC power supply system (2). A detector circuit (12) detects a faulty live conductor (L-) in which a maximum leakage current to earth (PE) flows due to a minimal insulation resistance (Rf-). The faulty live conductor (L-) is coupled to the balancing circuit (10) by means of a switching device (14), whereby the maximum leakage current is compensated by a control device (16) of the balancing circuit (10) without reducing the insulation resistance (Rf+) of the other live conductor (L+). Furthermore, the invention relates to an extended insulation monitoring device (30) for monitoring an ungrounded DC power supply system with a balancing circuit (10) according to the invention.

This invention discloses a self-powered circuit, method, bridge circuit, and power converter, relating to the field of power electronics technology. When a DC power supply charges each series-connected clamping capacitor, the balancing circuit and the auxiliary power supply simultaneously consume the current provided by the DC power supply. Since the auxiliary power supply operates in constant power mode, the current consumed by the auxiliary power supply decreases as the voltage of the clamping capacitor increases, exhibiting negative resistance. Meanwhile, the current consumed by the balancing circuit increases as the voltage across its terminals increases, and its positive resistance can offset the negative resistance of the auxiliary power supply, preventing the clamping capacitor voltage from becoming unstable due to positive voltage feedback. For each clamping capacitor, a corresponding balancing circuit is set up. The balancing circuit passively controls the equivalent resistance across each clamping capacitor to exhibit positive resistance, keeping the voltage of each clamping capacitor consistent, thereby suppressing voltage oscillations of the clamping capacitor and ensuring the normal startup and operation of the auxiliary power supply.

Battery system (1) comprising - a rechargeable battery (2) having two poles (3, 4) and a plurality of accumulator cells (Z 1 , Z 2 , ..., Z n ), and - an active balancing circuit (6) for monitoring and actively controlling the charge states of all battery cells (Z 1 , Z 2 , ..., Z n ) during the charging and discharging processes taking place during operation of the battery system (1), wherein in the active balancing circuit (6) for each accumulator cell (Z 1 , Z 2 , ..., Z n ) an intermediate circuit acting as a bidirectional DC-DC converter (S 1 , S 2 , ..., S n ), each intermediate circuit (S 1 , S 2 , ..., S n ) the two poles of the respective accumulator cell (Z 1 , Z 2 , ..., Z n) with the interposition of an inductance (L) and a first transistor (Q1), and wherein in each intermediate circuit (S 1 , S 2 , ..., S n ) between the inductance (L) and the first transistor (Q1) a branch is provided, which, with the interposition of a second transistor (Q2), is connected to an all intermediate circuits (S 1 , S 2 , ..., S n ) conductively connecting DC link (7), wherein the DC link (7) is coupled to a reference potential (GND) via a capacitor (C), and wherein the active balancing circuit (6) is suitable and, in a regular operating mode, is set up to keep the DC link (7) at a predeterminable potential which is either greater than the potential at the positive pole (3) of the battery (2) or less than the potential at the negative pole (4) of the battery (2).

A circulating current suppression method of a power system having a plurality of power modules is provided. Each power module includes a high-voltage bus, a low-voltage bus and a balance circuit having a neutral voltage. The circulating current suppression method includes: in each balance circuit, disposing a first capacitor electrically coupled between the high-voltage bus and the neutral voltage, and disposing a second capacitor electrically coupled between the neutral voltage and the low-voltage bus; acquiring a current effective value of an input of each power module; if detecting that the current effective value of at least one power module doesn't remain at a current reference value, determining that a circulating current occurs in the at least one power module; and operating the balance circuit of the at least one power module to charge the first capacitor or the second capacitor to regulate the neutral voltage for suppressing the circulating current.

The present disclosure provides a PID (Potential Induced Degradation) effect suppression system. The PID effect suppression system includes a photovoltaic system, at least one voltage source topology module and a balanced circuit. The photovoltaic system is connected with a power grid. An output end of the voltage source topology module is connected with busbar neutral points of the photovoltaic system. A common earth end of the voltage source topology module is earthed, and then the potential to earth of a photovoltaic panel group in the photovoltaic system is improved through the suppression voltage output by the voltage source topology module, and the suppression voltage is greater than ½ of the output voltage of the photovoltaic panel group. Therefore, a PID effect of the photovoltaic system in operation can be effectively suppressed. When the voltage source topology module gets power from busbars, the balanced circuit can be connected between the output end of the voltage source topology module and the common earth end. If deviation occurs on the busbar voltage of the photovoltaic system, the balanced circuit is connected with the voltage source topology module, so that the deviation voltage generated by the busbars can be effectively balanced to ensure normal operation of the photovoltaic system under the suppression of the PID effect.

The present invention relates to the technical field of battery management, and discloses a battery pack balancing control method, device and storage medium. The method includes the following steps: establishing a simulation model of the balanced circuit to be controlled; establishing a control model of a fuzzy closed-loop balanced control system including the simulation model of the balanced circuit according to the adopted fuzzy control scheme; taking the goal of ensuring that the balanced current of the control model remains within the desired range while minimizing the running time required for the control model to reach balance, and using a swarm intelligence algorithm to optimize the domain of the fuzzy controller in the fuzzy closed-loop balanced control system; using the optimized fuzzy closed-loop balanced control system to control the battery pack. This battery pack balancing control method can design a fuzzy control scheme with high adaptability to the balanced circuit to be controlled without relying on expert experience, improve the balanced control effect on the battery pack, and extend the service life of the batteries in the battery pack.

To provide a supercapacitor module and a method for manufacturing the same that are able to prevent an overvoltage without a balancing circuit.SOLUTION: A supercapacitor module may include a first supercapacitor having a first parameter value for a capacitor parameter in a first test condition. The supercapacitor module may include a second supercapacitor having a second parameter value for the capacitor parameter under approximately the first test condition. A ratio of the second parameter value to the first parameter value may be from about 0.8 to about 1.2. The supercapacitor module may prevent an overvoltage across the first and second supercapacitors, so that the supercapacitor module may satisfactorily operate without a balancing circuit.SELECTED DRAWING: None