Abstract: The present application discloses a multi-path resonant circuit and a resonant converter. The multi-path resonant circuit includes at least two parallel N-phase resonant circuits, wherein N is an integer greater than or equal to 3. The at least two parallel N-phase resonant circuits include a first N-phase resonant circuit and a second N-phase resonant circuit. A first resonant inductor in any phase resonant circuit of the first N-phase resonant circuit is coupled with a second resonant inductor in any phase resonant circuit of the second N-phase resonant circuit. In this way, current sharing of the multi-path resonant circuit can be realized through a simpler structure.

Abstract: The embodiments of the present disclosure provide a power management system of a mobile X-ray machine and a control method thereof. The power management system comprises a power module group; a main control module being connected with a upper machine, and configured to receive an action signal sent by the upper machine, acquire status information of the power module group, and output a control signal; a functional component power pack being connected with the power module group and the main control module, and configured to convert electrical energy of the power module group according to the control signal and output converted energy to a functional component of a high-voltage generator.

Abstract: The present application discloses a multi-path resonant circuit and a resonant converter. The multi-path resonant circuit includes at least two parallel N-phase resonant circuits, wherein N is an integer greater than or equal to 3. The at least two parallel N-phase resonant circuits include a first N-phase resonant circuit and a second N-phase resonant circuit. A first resonant inductor in any phase resonant circuit of the first N-phase resonant circuit is coupled with a second resonant inductor in any phase resonant circuit of the second N-phase resonant circuit. In this way, current sharing of the multi-path resonant circuit can be realized through a simpler structure.

Abstract: A energy storage system includes a power supply device, a main battery and a backup battery, and a power supply method of the energy storage system includes: when the power supply device works normally, a load is powered and the backup battery is floatingly charged by the power supply device, and the main battery is in standby mode; when the power supply device stops supplying power, the load will be powered by the backup battery, and meanwhile, the main battery will be triggered to switch from the standby mode to a backup mode to start supplying power to the load; when an output power of the main battery is equal to a power of the load, an output power of the backup battery is zero and the backup battery is in a bypass state.

Abstract: The parallel assembly of rectifier modules includes a plurality of rectifier modules connected in parallel, a switch for switching-in and switching-out of the rectifier modules, an assembly frame, being provided therein with a switch accommodating space and a rectifier module accommodating space; a DC bus bar, being arranged at the top of the assembly frame; a plurality of groups of connectors, being fixed at one end close to the back side of the assembly frame; an AC copper bar, being fixed at one end close to the front side of the assembly frame; an extended copper bar, being fixed at one end close to the back side of the assembly frame.

Abstract: A energy storage system includes a power supply device, a main battery and a backup battery, and a power supply method of the energy storage system includes: when the power supply device works normally, a load is powered and the backup battery is floatingly charged by the power supply device, and the main battery is in standby mode; when the power supply device stops supplying power, the load will be powered by the backup battery, and meanwhile, the main battery will be triggered to switch from the standby mode to a backup mode to start supplying power to the load; when an output power of the main battery is equal to a power of the load, an output power of the backup battery is zero and the backup battery is in a bypass state.

Abstract: The embodiments of the present disclosure provide a power management system of a mobile X-ray machine and a control method thereof. The power management system comprises a power module group; a main control module being connected with a upper machine, and configured to receive an action signal sent by the upper machine, acquire status information of the power module group, and output a control signal; a functional component power pack being connected with the power module group and the main control module, and configured to convert electrical energy of the power module group according to the control signal and output converted energy to a functional component of a high-voltage generator.

Abstract: An adaptive control method for a mobile X-ray machine includes: acquiring operating information of a battery, determining a state of the battery; if the battery is in a failure state, selecting a first control value; if the battery is not in the failure state, determining whether a residual charge of the battery is less than a low charge threshold; if the residual charge of battery is less than low charge threshold, determining the battery is in a low charge state, and selecting a second control value; and if residual charge of battery is not less than low charge threshold, determining the battery is in a normal state, and selecting a third control value; acquiring circuit parameter information of a capacitor charger, and controlling capacitor charger based on circuit parameter information and the first control value or the second control value or the third control value.

Abstract: The present disclosure provides a control circuit, where the control circuit includes: a signal detection unit, a zero-crossing detection (ZCD) signal acquisition unit, a pulse width modulation (PWM) control signal generation unit, and a signal processing unit; where the signal detection unit, the ZCD signal acquisition unit, the PWM control signal generation unit and the signal processing unit are connected in cascade. The control circuit provided in the present disclosure reduces processing delay of a ZCD signal and improve signal a processing accuracy of a power factor correction (PFC) system.

Abstract: A mobile high voltage generating device for providing power to an X-ray apparatus, includes a power supply unit including a battery and an isolated DC-DC converter electrically coupled with the battery; an energy storage unit, electrically coupled to the isolated DC-DC converter of the power supply d a voltage conversion unit coupled between the energy storage unit and a radiation source of the X-ray apparatus; wherein the isolated DC-DC converter includes: a first inverter circuit coupled to a battery, a first rectifier circuit coupled to the energy storage unit, a first transformer including a primary winding and a secondary winding. The primary winding is coupled to the first inverter circuit and the secondary winding is coupled to the first rectifier circuit.

Abstract: The present disclosure provides a control circuit, where the control circuit includes: a signal detection unit, a zero-crossing detection (ZCD) signal acquisition unit, a pulse width modulation (PWM) control signal generation unit, and a signal processing unit; where the signal detection unit, the ZCD signal acquisition unit, the PWM control signal generation unit and the signal processing unit are connected in cascade. The control circuit provided in the present disclosure reduces processing delay of a ZCD signal and improve signal a processing accuracy of a power factor correction (PFC) system.

Abstract: A high voltage transformer apparatus, including: a tank; a high voltage transformer, disposed upright on one side within the tank, including a first transformer unit configured to generate a positive voltage and a second transformer unit configured to generate a negative voltage; a positive high voltage terminal and a negative high voltage terminal respectively disposed on the other side within the tank opposite to the first transformer unit and the second transformer unit; a first circuit board disposed between the first transformer unit, the first side wall, and the positive high voltage terminal; and a second circuit board disposed between the second transformer unit, the second side wall, and the negative high voltage terminal; wherein the first and second circuit boards are respectively configured to rectify, filter and sample the positive and negative voltages.

Abstract: A high voltage transformer apparatus, including: a tank; a high voltage transformer, disposed upright on one side within the tank, including a first transformer unit configured to generate a positive voltage and a second transformer unit configured to generate a negative voltage; a positive high voltage terminal and a negative high voltage terminal respectively disposed on the other side within the tank opposite to the first transformer unit and the second transformer unit; a first circuit board disposed between the first transformer unit, the first side wall, and the positive high voltage terminal; and a second circuit board disposed between the second transformer unit, the second side wall, and the negative high voltage terminal; wherein the first and second circuit boards are respectively configured to rectify, filter and sample the positive and negative voltages.

Abstract: A power supply device includes a power supply module, a high voltage conversion module and a control module. The high voltage conversion module includes a first high-voltage output module and a second high-voltage output module both connected to the power supply module. The control module is connected to the first high-voltage output module and the second high-voltage output module to respectively sample a first output voltage of the first high-voltage output module and a second output voltage of the second high-voltage output module and generate a power control signal, a first control signal and a second control signal respectively used to control the power supply module, the first high-voltage output module and the second high-voltage output module. There is a phase difference between the first control signal and the second control signal to interleaving control the first high-voltage output module and the second high-voltage output module.

Abstract: A power supply device includes a power supply module, a high voltage conversion module and a control module. The high voltage conversion module includes a first high-voltage output module and a second high-voltage output module both connected to the power supply module. The control module is connected to the first high-voltage output module and the second high-voltage output module to respectively sample a first output voltage of the first high-voltage output module and a second output voltage of the second high-voltage output module and generate a power control signal, a first control signal and a second control signal respectively used to control the power supply module, the first high-voltage output module and the second high-voltage output module. There is a phase difference between the first control signal and the second control signal to interleaving control the first high-voltage output module and the second high-voltage output module.

Abstract: A capacitor discharging circuit and a converter are disclosed. The converter comprises: a capacitor connected between the live line and null line of an AC power input terminals, a conversion module coupled to the capacitor and comprising an energy storage component at least, an energy transfer unit coupled with the energy storage component and the capacitor, an AC power-off detecting unit and a control unit; wherein the energy transfer unit comprises a switch device; when AC power is disconnected, the AC power-off signal triggers the control unit to output a switch driving signal, controlling the operation of the energy transfer unit to transfer the energy stored in the capacitor to the energy storage component to discharge the capacitor.

Abstract: A capacitor discharging circuit and a power converter having the capacitor discharging circuit are disclosed. The capacitor discharging circuit comprises a conversion module connected with the two terminals of the capacitor, an AC power-off detecting unit used to detect on-off state of AC power, and a control unit. The conversion module comprises an energy consumption unit. When AC power is disconnected, the AC power-off signal generated by the AC power-off detecting unit intervenes the control unit to control the energy consumption unit to consume the energy stored in the capacitor.

Abstract: The configurations of a bridgeless PFC circuit system and a controlling method thereof are provided. The proposed system includes a bridgeless PFC circuit including a first bridge arm having a first and a second terminals and a first middle point, a second bridge arm having a first and a second terminals and a second middle point, and a bidirectional switch coupled between the first middle point and the second middle point, and an inductor coupled between the first middle point and an AC power source coupled to the second middle point, and a current sensing circuit including a first current transformer sensing a first current flowing through the bidirectional switch, which having a primary side winding coupled to the bidirectional switch and a first and a second secondary side windings, and a switching device coupled to the two secondary side windings.

Abstract: A variable frequency converter and an adjusting method for the same are provided in the present application. The variable frequency converter operates in a variable frequency mode, and comprises a power stage circuit module and a variable frequency signal stage circuit module which are connected to form a closed-loop circuit system. The variable frequency converter further comprises an adjusting unit outputting a continuous interfering signal and loading the continuous interfering signal into the variable frequency signal stage circuit module so as to cause operating frequency of the power stage circuit module controlled by the variable frequency signal stage circuit module to change continuously. In the present application, in the variable frequency converter, the EMI peak value is decreased.