95results about How to "Increase boost capacity" patented technology

The invention discloses a bidirectional transducer of a flywheel energy storage system and a control method of the bidirectional transducer. The bidirectional transducer of the flywheel energy storage system comprises a three-phase bridge arm and a neutral point bridge arm which is in parallel connection with the three-phase bridge arm. The neutral point bridge arm is connected with the neutral point of a motor winding. According to the bidirectional transducer of the flywheel energy storage system and the control method of the bidirectional transducer, a flywheel can reach a higher rotating speed in the charging process, and accordingly the amplitude of induced electromotive force is raised; the requirement for boosting of half bridge modulation can be lowered in the discharging process, so that energy feedback is better achieved; in addition, the energy storage capacity of the flywheel energy storage system can be improved through the higher rotating speed, single and double pole driving can be realized, and smooth switching can be achieved between the two driving modes; the bidirectional transducer of the flywheel energy storage system and the control method of the bidirectional transducer are suitable for the flywheel energy storage system and other occasions which are wide in operation range and capable of achieving frequent switching in a high / low velocity area, and particularly suitable for solving the randomness and volatility problems of a new energy power generation system, energy can be output smoothly, so that the change of the voltages, the frequencies and the phases of a power grid due to wind power generation is effectively adjusted, and large-scale new energy electricity can be safely and reliably connected into a conventional power grid.

The invention relates to health-care and antihypertensive hepherdspuse herb biscuits. The invention further relates to a preparation method of the health-care and antihypertensive hepherdspuse herb biscuits. The health-care and antihypertensive hepherdspuse herb biscuits are prepared from, by mass, 40-60 parts of hepherdspuse herbs, 35-50 parts of wheat flour, 5-10 parts of auricularia auricula, 3-9 parts of lentinula edodes, 5-11 parts of pumpkins, 4-12 parts of hawthorns, 4-10 parts of herba taxilli, 3-9 parts of puerarin, 4-9 parts of raw sophora flowers, 3-9 parts of radix scutellariae, 3-8 parts of lotus seeds, 3-8 parts of parsley, 2-9 parts of magnolia denudata, 3-9 part of stigma maydis, 3-9 parts of polygonum multiflorum and 10-20 parts of sunflower seed oil. The health-care and antihypertensive hepherdspuse herb biscuits are rich in nutrient, suitable for the old and the young and capable of achieving the health-care efficacy after being eaten for a long time.

The invention discloses a cascaded DC / DC converter for an asymmetric boost unit of a photovoltaic system, which comprises an input power supply Vin, wherein a positive electrode of the input power supply Vin is connected with one end of an inductor L1, the other end of the inductor L1 is connected with an anode of a free-wheeling diode D1 and an anode of a free-wheeling diode D2, a cathode of thefree-wheeling diode D1 is connected with one end of an inductor L2, one end of a capacitor C1 and one end of a capacitor C2, the other end of the inductor L2 is connected with an anode of a free-wheeling diode D4, one end of a capacitor C3, a cathode of the free-wheeling diode D2 and a drain electrode of a switching tube S, the other end of the capacitor C2 is connected with a cathode of the free-wheeling diode D4 and an anode of a free-wheeling diode D3, the other end of the capacitor C3 is connected with a cathode of the free-wheeling diode D3 and an anode of an output rectifying diode Do,a cathode of the output rectifying diode Do is connected with one end of an output capacitor Co and one end of a load resistor R, and the other end of the output capacitor Co, the other end of the load resistor R, a source electrode of the switching tube S and the other end of the capacitor C1 are connected with a negative electrode of the input power supply Vin. The cascaded DC / DC converter can improve the efficiency and the gain ratio.

The invention discloses a non-isolated integrated boost DC / AC converter and a control method thereof, and belongs to the technical field of power electronic converters. The DC / AC converter comprises power switch tubes S1, S2, S3 and S4, a diode D, an inductor Lin and a capacitor C1. One end of the direct current side of one converter is connected with one end of an inductor Lin, the other end of the inductor Lin is connected with the anode of the diode D, the cathode of the diode D is connected with terminals 1 of a power switch tube S1 and a power switch tube S3 and one end of a capacitor C1, and the other end of the capacitor C1 is connected with terminals 2 of a power switch tube S2 and a power switch tube S4; the other end of the direct current side, the terminal 2 of the power switch tube S1, the terminal 1 of the power switch tube S2 and one end of the alternating current side are all grounded; and the terminal 2 of the power switch tube S3 and the terminal 1 of the power switch tube S4 are connected to the other end of the alternating current side. Aiming at the problem that a traditional boost inverter has leakage current, the boost inverter is high in integration level and small in size, and the problem of leakage current can be effectively solved.

The invention discloses a fuel cell hybrid electric vehicle system. The system comprises a fuel cell pack, an independent grade boosting inverter, a storage cell pack and an electromotor. The fuel cell pack is adopted as an input power source for the independent grade boosting inverter, and the independent grade boosting inverter is connected with the storage cell pack and finally connected to the electromotor; according to the fuel cell hybrid electric vehicle system, the system cost can be lowered, the system structure can be simplified, the system reliability can be improved, and the system service life can be prolonged.

A semiconductor memory device that includes a first high voltage oscillator configured to generate a first control pulse in response to a first enable signal, a level shifter configured to generate a high voltage control pulse by boosting a level of the first control pulse using a source high voltage, and a first high voltage generator configured to generate a high voltage by boosting an external power supply voltage in response to the high voltage control pulse.

A hybrid, symmetrical and active boost network converter disclosed by the present invention comprises an input power supply Vin, the anode of the input power supply Vin is connected with a same name end of a coupling inductor primary winding L1, and the different name end of the coupling inductor primary winding L1 is connected with the same name end of a coupling inductor secondary winding L2 andthe drain of a switching tube S separately. The different name end of the coupling inductor secondary winding L2 is connected with one end of a capacitor C1 and the anode of a rectifier diode D1 separately, the cathode of the rectifier diode D1 is connected with the anode of a rectifier diode D2 and one end of a capacitor C2 separately, and the cathode of the rectifier diode D2 is connected withthe other end of the capacitor C1 and the anode of a rectifier diode D0 separately. The cathode of the rectifier diode D0 is connected with one end of an output capacitor C0 and one end of a load resistor R separately, and the other end of the output capacitor C0, the other end of the load resistor R, the other end of the capacitor C2 and the source of the switching tube S are connected with the cathode of the input power supply Vin separately. The boost network converter of the present invention effectively solves the problems that the conventional converter is weak in boost capability and low in efficiency, and the switching tube and an output diode are large in voltage stress.

The invention provides a high-boost-capacity type Z-source inverter topological structure. A switch tube S7 and an inductor L7 are arranged at the front stage of a Z-source network, and the switch tube S7 and the inductor L7 are combined with an input diode Din. The high-boost-capacity Z-source inverter topological structure further comprises six inductors L1-L6 with the same inductance values, two capacitors C1 and C2 with the same capacitance values, and twelve identical diodes, wherein the L1, L3 and L5, and the D1-D6 form an upper switch inductance unit, the L2, L4 and L6, and D7-D12 forma lower switch inductance unit. The boosting capacity of the Z-source inverter is improved, and the application range of the Z-source inverter on the input voltage is also expanded.

The invention discloses a multi-input boost converter based on Switch-Capacitor networks. The multi-input boost converter is mainly formed by connecting multiple Switch-Capacitor networks in parallel, the capacitor voltages in all the Switch-Capacitor networks are equal, and a larger output voltage is achieved through the mode of accumulating multiple network capacitor voltages. The multi-input boost converter is used for replacing multiple single-input boost converters. The multi-input boost converter allows the input of multiple energy sources, the properties, the amplitude values and the characters of input sources can be identical and can also be very different, the input sources can supply power to loads respectively or simultaneously, and therefore the stability and the flexibility of a system are improved, the preferential utilization of the energy sources is achieved, and system cost is lowered.

The invention discloses a large-power boost circuit with a high transformation ratio. The large-power boost circuit comprises a pre-stage push-pull boost sub-circuit (1), a post-stage BOOST voltage stabilizing sub-circuit (3), and a mid-stage resonant rectifier sub-circuit (2). The large-power boost circuit adopts a two-stage cascade structure, wherein an output filter inductor of the pre-stage push-pull boost sub-circuit (1) and a filter inductor of the post-stage BOOST voltage stabilizing sub-circuit (3) share one inductor so as to reduce the circuit size and cost; a resonant capacitor C5 not only can form resonance together with leakage inductance refracted from a primary side to a secondary side to realize maximized energy transfer, but also can realize soft switching of a first power three-pole switch tube S1 and a second power three-pole switch tube S2 to further improve the circuit conversion efficiency.