43results about How to "Good self-starting" patented technology

In a laser (12, 18) with a laser resonator (13), the laser resonator (13) has a non-linear optical loop mirror (1, 1′), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1′). The non-linear optical loop mirror (1, 1′) contains a non-reciprocal optical element (7, 7′) on a linear section of the NOLM. In addition to the NOLM, the laser resonator (13) has a linear cavity section. The linear section of the NOLM and the linear cavity section (19) are reassembled on a microoptical bench (112) or within a cylindrical carrier (112).

The invention discloses a fishtail type tidal current energy generating set which solves the problem that an existing tidal current energy generating set cannot be effectively suitable for a near-shore shallow-water sea area, and has the advantages of being great in swept area and high in power generating efficiency. According to the technical scheme adopted by the invention, the fishtail type tidal current energy generating set comprises a first swing energy absorbing mechanism and a second swing energy absorbing mechanism, wherein the first swing energy absorbing mechanism comprises a firstcross arm; the end part of the first cross arm is hinged with a first water wing; the first cross arm is connected with a first hydraulic pump and a first gas pump; the second swing energy absorbing mechanism comprises a second cross arm; the end part of the second cross arm is hinged with a second water wing; the second cross arm is connected with a second hydraulic pump and a second gas pump; the first hydraulic pump is connected with a second hydraulic motor; a second hydraulic motor is connected with the second water wing; the second hydraulic motor drives the second water wing to swing along a hinged part with the second cross arm; the second hydraulic pump is connected with the first hydraulic motor; the first hydraulic motor is connected with the first water wing; and the first hydraulic motor drives the first water wing to swing along a hinged part with the first cross arm.

The invention relates to an impeller of a foldable-blade vertical shaft based on belt drive. The impeller of the foldable-blade vertical shaft based on the belt drive comprises a bearing base, a spindle, an upper blade bracket, a lower blade bracket, four groups of gear sets, four groups of stop rods, four outer blades, four inner blades and two belt drive sets. The blades of the impeller are regularly rotated while revolved around an axis, the positions of the blades are changed so that the blades are expanded as the plate in the windward direction, the windward area is increased, and the received driving torque is improved; and the blades are folded against the wind, the headwind resistance is reduced, so the impeller of a blower has better self-startability, and higher generating efficiency.

The invention provides an attack angle variation method for an H-shaped vertical-axis wind turbine. The attack angle variation method comprises the following steps that (1) the theoretical optimum attack angles of an upper wind area and a lower wind area are determined; (2) the operation relations of the induced velocities and the inducing factors of the upper wind area and the lower wind area are obtained; (3) the adjusting law of the mounting angle of blades of the upper wind area is determined; (4) the adjusting law of the mounting angle of blades of the lower wind area is determined; and (5) according to the adjusting laws of the mounting angles of the blades of the upper wind area and the lower wind area, the mounting angle of the H-shaped vertical-axis wind turbine is adjusted in real time. The invention further provides an attack angle real-time adjusting device of the H-shaped vertical-axis wind turbine. By using the attack angle variation method for the H-shaped vertical-axis wind turbine, the blade attack angle is adjusted in real time, so that the attack angles of all positions of the blades in the rotating process are closest to the optimum attack angles, and the purpose that the wind energy utilization ratio is increased is achieved accordingly.

The invention discloses a full polarization-maintaining fiber dispersion management ring cavity mode-locking femtosecond ytterbium-doped fiber laser, which is applied to the field of laser, and comprises a double-pigtail fiber collimation semiconductor saturable absorber mirror, a three-port circulator, a gain fiber, a chirped fiber grating, a wavelength division multiplexer and a pumping source. All the devices are welded together through single-mode polarization-maintaining fibers. The full-fiber device forms a laser resonant cavity between the semiconductor saturable absorber mirror and the fiber bragg grating. In order to solve the problems that an existing semiconductor saturable absorber mirror mode-locked linear cavity is prone to forming parasitic oscillation, mode locking in the cavity is unstable, the anti-damage threshold value of a semiconductor saturable absorber mirror is greatly reduced, and the semiconductor saturable absorber mirror is prone to being damaged, an annular cavity structure is adopted, and the laser is high in stability, and the influence of parasitic oscillation generated by back reflection of fiber fusion points and end face reflection of an output port is avoided. Extra-cavity pumping is adopted, and the mode-locked laser is easy to realize high repetition frequency; the mode-locked laser is good in self-starting performance, and wide spectrum output can be obtained.

The invention relates to a vertical axis wind power generation impeller comprising flexible blades. The vertical axis wind power generation impeller is mainly formed by a main shaft, an upper support, a lower support, a first baffle plate, a second baffle plate, a third baffle plate, a fourth baffle plate, a first blade, a second blade, a third blade, a fourth blade and a flexible base.

A polarization maintaining optical fiber mode-locked laser is characterized by comprising an optical fiber reflector, a variable optical attenuator, a polarizer, a second input port of a wavelength division multiplexer, an output port of the wavelength division multiplexer, gain optical fibers, an isolator, a filter, an input port of a beam splitter, a first output port of the beam splitter and a saturable absorber mirror, wherein the optical fiber reflector, the variable optical attenuator, the polarizer, the second input port of the wavelength division multiplexer, the output port of the wavelength division multiplexer, the gain optical fibers, the isolator, the filter, the input port of the beam splitter, the first output port of the beam splitter and the saturable absorber mirror are sequentially connected in a fusion welding mode through polarization maintaining optical fibers. A pumping source is connected with a first input port of the wavelength division multiplexer in a fusion welding mode, and a second output port of the beam splitter is a laser output port. According to the polarization maintaining optical fiber mode-locked laser, two mode-locked mechanisms are utilized simultaneously. The polarization maintaining optical fiber mode-locked laser has the advantages that the full polarization maintaining optical fiber structure is provided, high mode-locked self-starting performance is achieved, and high stability and the compact structure are achieved. The polarization maintaining optical fiber mode-locked laser has wide application prospects.

The invention relates to a multi-winding laminated claw pole motor, which is mainly used for permanent magnet synchronous motor. A coil (1) is wound on a framework (2); a plurality of groups of laminated claw poles (3) are respectively arranged in the framework (2) from two ends; the two groups of laminated end plates (4) are respectively arranged at two ends of the framework (2) to form a single-winding combination (5), the laminated claw poles (3) and the laminated end plates (4) are formed by laminating a plurality of silicon steel sheets, and the motor stator can be formed by coaxially arranging two or three single-winding combinations (5) side by side and staggered at an electromagnetic angle of 90 degrees or 120 degrees in the circumferential direction. Compared with most existing motors, the motor winding processing technology is simplified, the reliability is improved, the copper consumption is reduced, compared with an existing asynchronous motor, the efficiency and the powerfactor are greatly improved, compared with an existing permanent magnet synchronous motor, the rotor structure is simplified, the cost is reduced, the self-starting capacity is good, and a high-powermotor can be manufactured.

The invention discloses a solar air conditioner system having charging, control and H-bridge inversion. The air conditioner system comprises a solar cell, a solar controller, a storage battery and a variable frequency air conditioner, wherein the solar controller comprises a charging circuit, a control circuit, a lightning prevention circuit and a discharging circuit, the variable frequency air conditioner comprises an inversion circuit, the inversion circuit comprises a fiftieth-first IGBT (Insulated Gate Bipolar Transistor) tube, a fiftieth-second IGBT tube, a fiftieth-third MOS (Metal Oxide Semiconductor) tube, a fiftieth-fourth MOS tube, a fiftieth-first diode, a fiftieth-second diode, a fiftieth-third diode, a fiftieth-fourth diode, a fiftieth-first resistor and a fiftieth-second resistor. By the solar air conditioner system, lightning can be effectively prevented, the safety performance of the system is improved, the activity of the storage battery can be ensured as well as the storage battery is charged, the service lifetime of the storage battery can be prolonged, the charging efficiency of the storage battery can be improved, the power utilization time of the storage battery is prolonged, the solar air conditioner system has favorable automatic-starting capability, an infinite loop state is prevented, and relatively high efficiency is achieved no matter whether a load works in a light-load or heavy-load condition.

The invention relates to a vertical shaft wind power generation impeller with a belt wheel mechanism. The vertical shaft wind power generation impeller mainly comprises a main shaft, an upper support, a lower support, a first belt wheel mechanism, a second belt wheel mechanism, a first blocking plate, a second blocking plate, a third blocking plate, a fourth blocking plate, a first vane, a second vane, a third vane, a fourth vane and a movable base.

The invention discloses a solar air-conditioning system having charging, controlling and H-bridge inversion functions. The solar air-conditioning system is composed of a solar battery, a solar controller, a storage battery, and a variable-frequency air conditioner. The solar controller consists of a charging circuit, a control circuit, a lightning prevention circuit, and a discharging circuit. The variable-frequency air conditioner includes an inverter circuit. The control circuit consists of a thirty-first diode, a thirty-second diode, a thirty-third diode, a thirty-fourth voltage-regulator tube, a thirty-seventh voltage-regulator tube, a thirty-second resistor, a thirty-first MOS tube, and an integrated voltage-regulating chip. The inverter circuit includes a fifty-first IGBT tube, a fifty-second IGBT tube, a fifty-third MOS tube, a fifty-fourth MOS tube, a fifty-first diode, a fifty-second diode, a fifty-third diode, a fifty-fourth diode, a fifty-first resistor, and a fifty-second resistor. According to the invention, a lightning prevention effect is good; the system security is improved; the system having low cost and high reliability can be installed conveniently; the system has the excellent self-starting capability; an endless loop state is avoided; and no matter whether the load is in an under-loading working state or a full-load working sate, the efficiency is high.

The invention discloses a solar air-conditioning system with control and power lightning protection functions. The solar air-conditioning system comprises a solar battery, a solar controller, a storage battery and a variable-frequency air conditioner, wherein the solar controller comprises a charging circuit, a control circuit, a lightning protection circuit and a discharge circuit; the variable-frequency air conditioner comprises an inverter circuit; the control circuit comprises a 31st diode, a 32nd diode, a 33rd diode, a 34th voltage-regulator tube, a 37th voltage-regulator tube, a 32nd resistor, a 31st MOS tube and an integrated voltage stabilizing chip; and the lightning protection circuit comprises a 61st resistor, a 62nd resistor, a 61st piezoresistor, a 62nd piezoresistor, a 63rd piezoresistor, a 61st fuse, a 62nd fuse, a 63rd fuse, a 64th fuse and a gas discharge tube. By the solar air-conditioning system, a thunder can be effectively prevented, the safety performance of the system is improved, the solar air-conditioning system has relatively good self-startup ability, an endless loop state is avoided, a lightning surge on an air conditioner can be absorbed, and the air conditioner is prevented from being damaged by the lightning surge.

The invention discloses a solar air conditioner control system having charge, discharge and control functions. The solar air conditioner control system comprises a solar cell, a solar controller, a storage cell and a variable frequency air conditioner, wherein the solar controller comprises a charging circuit, a control circuit, a lightning protection circuit and a discharging circuit; the variable frequency air conditioner comprises an inverter circuit and a compressor; the control circuit comprises thirty-first to thirty-third diodes, a thirty-fourth voltage stabilizing tube, a thirty-seventh voltage stabilizing tube, a thirty-second resistor, a thirty-first MOS transistor and an integrated voltage stabilizing chip; the discharging circuit comprises forty-first to forty-second triodes, forty-first to forty-six resistors, a forty-first capacitor and a forty-second capacitor. Via use of the solar air conditioner control system, effective lightning protection can be realized, system safety performance can be improved, endless loop states can be prevented, loss can be lowered and discharge time can be reduced; the solar air conditioner control system which is convenient to install is low in cost, high in reliability and good in self-starting capability.