462results about How to "Reduce energy loss" patented technology

The invention relates to a high-precision maximum power point tracing method, which is an MPPT algorithm combining variable step-size optimization and a disturbance observation method based on power prediction, i.e. a variable step-size disturbance observation method based on the power prediction. The high-precision maximum power point tracing method can overcome the defects of the conventional disturbance observation method, the variable step-size disturbance observation method, and the like, solve the problems of failure judgment, local maximum power, and the like and quickly and precisely trace a maximum power point.

The present invention provides a lubricating base oil comprising saturated components of 90% by mass or greater, wherein the proportion of cyclic saturated components among the saturated components is not greater than 40% by mass, and by having a viscosity index of 110 or higher and an iodine value of not greater than 2.5. The lubricating base oil of the invention exhibits excellent viscosity-temperature characteristics and heat and oxidation stability while also allowing additives to exhibit a higher level of function when additives are included. The lubricating base oil of the invention is suitable for use in various lubricating oil fields, and is especially useful for reducing energy loss and achieving energy savings in devices in which the lubricating base oil is applied.

An acoustic wave device includes electrodes carried on a surface of a piezoelectric material and an array of reflective obstacles such that elastic energy resulting from a piezoelectric effect is preferentially directed along a primary wave propagation path. The array of reflective obstacles are positioned generally parallel to the surface of the piezoelectric material and redirect acoustic waves typically reflected in other than a desirable direction to along a desired direction generally along the primary propagation path. The obstacles improve performance for SAW and BAW devices by effecting reflected energy and suppressing spurious modes.

Maximum charging power of a battery (63) is set by a battery-charging power setting unit (75), while maximum discharging power of the battery (63) is set by a battery-discharging power setting unit (76). Lower and upper limit of generator output power is set by a generator output power setting unit (77). A generator/battery power distribution determining unit (81) distributes power between the battery (63) and the generator (62) using the set values above.

A wheel suspension system having under powered acceleration a stable squat magnitude response.

An integrated circuit structure includes an interconnect structure over a semiconductor substrate and a coaxial transmission line. The coaxial transmission line includes a signal line, a top plate over the signal line and electrically insulated from the signal line, and a bottom plate under the signal line and electrically insulated from the signal line. At least one of the top plate and the bottom plate includes metal strip shields and dielectric strips, with each of the dielectric strips being between two of the metal strip shields. The integrated circuit structure further includes a ground conductor electrically connecting the top plate and the bottom plate. The ground conductor is insulated from the signal line by a dielectric material.

A vehicle includes a vehicle engine and a transmission. A first electric motor is driveably connected to the transmission. A second electric motor is driveably connected to the vehicle engine. At least one selectively engagable clutch is located between the engine and the transmission to provide slip. The at least one clutch is engaged after the engine reaches a predetermined speed differential with the transmission.

The lubricating base oil of the invention satisfies at least one of conditions (a) or (b) below. The lubricating oil composition for an internal combustion engine according to the invention comprises the lubricating base oil of the invention, an ashless antioxidant containing essentially no sulfur as a constituent element, and at least one compound selected from among ashless antioxidants containing sulfur as a constituent element and organic molybdenum compounds. Also, a lubricating oil composition for a power train device according to the invention comprises the lubricating base oil of the invention, a poly(meth)acrylate-based viscosity index improver and a phosphorus-containing compound.

(a) The saturated component content is 90% by mass or greater, and the proportion of cyclic saturated components among the saturated components is 10-40% by mass.

(b) The condition represented by the following formula (1) is satisfied. 1.440≦n₂₀−0.002×kv100≦1.453 (1)

[wherein n₂₀ represents the 20° C. refractive index of the lubricating base oil, and kv100 represents the kinematic viscosity at 100° C. (mm²/s) of the lubricating base oil.]

The invention relates to a braking system for an electric motor coach. A brake pedal signal switch, an accelerator pedal signal switch, a brake master cylinder pressure sensor, a gear sensor, a vehicle speed sensor, a motor revolution speed transducer, a battery management system, a sliding energy recovery control knob and a gas storage tank pressure sensor are in signal connection with a vehicle control unit respectively; the vehicle control unit is in signal connection with a motor controller, a voltage conversion direct current (DC)-alternating current (AC) unit and an anti-locked braking system respectively; and the voltage conversion DC-AC unit is in circuit connection with an electric air compressor which is in gas circuit connection with a braking gas storage tank, the gas storage tank pressure sensor is installed on the braking gas storage tank, and an energy unit circuit is connected with the battery management system. The invention further relates to a control method. The braking system for the electric motor coach is skillful in design, concise in structure, easy to implement, provided with an energy recovery function on the premise that the safety and the stability of the whole braking system are guaranteed, provided with good braking force distribution feature and braking foot feeling and suitable for large-scale popularization and application.

Aspects of the invention are directed to systems and method for limiting losses in an uninterruptible power supply. In one aspect, the present invention provides an uninterruptible power supply (UPS) comprising an input to receive input power having an input voltage, an output to provide output power having an output voltage, a neutral line, an automatic voltage regulation (AVR) transformer coupled to the input and the output of the UPS and having an input, an output, a core and at least one switch controllably coupled to at least one of the core, the input and the output, and a means for isolating the core of the AVR transformer from the neutral line when the input voltage is substantially equal to a defined output voltage.

The invention provides an inverter circuit and a control method for the inverter circuit, wherein the inverter circuit comprises a direct-current source, an alternating-current circuit and more than one inverter bridge; the inverter bridge comprises a first bridge arm and a second bridge arm; the first bridge arm is respectively connected with the positive pole and the negative pole of the direct-current source; the second bridge arm is respectively connected with the positive pole and the negative pole of the direct-current source; the first bridge arm and the second bridge arm are arranged in parallel; the first bridge arm comprises a first switch element group and a second switch element group connected in series; the second bridge arm comprises a third switch element group and a fourth switch element group connected in series; and the alternating-current circuit comprises a first alternating-current source and a first capacitor connected in parallel, or comprises a first alternating-current load and a first capacitor connected in parallel. The technical scheme provided by the embodiment of the invention can realize soft switching in the inverter circuit.

The invention provides a driving method and a system for a series type hybrid power vehicle. The method comprises the steps: a vehicle in running state is driven, wherein, when the carrying capacity of a battery is more than a lower limit threshold value and acceleration is not more than upper limit acceleration, the battery supplies power to a motor to drive the vehicle to run and keeps the motor not working; when the carrying capacity of the battery is less than the lower limit threshold value or the acceleration is more than the upper limit acceleration, the motor is started up to drive a generator to generate electricity. Therefore, power can be applied to the utmost extent so as to reduce the application of fuel and realize the best fuel economy.

The invention discloses a carbon-free cart for traversed S-shaped traveling. A front wheel (14) is installed on a front wheel bracket (6) through a front wheel steering shaft (5), a dead pulley (1) is installed on a potential energy bracket (3), a driving shaft (15) is installed on a driving shaft bracket (16), a driving wheel (17) and a driven wheel (8) are installed on the driving shaft (15), left and right pinions (18, 19) are installed on the driving shaft (15), left and right gear wheels (11, 10) are installed on a bottom frame (13), the left and the right pinions (18, 19) are engaged with the left and the right gear wheels (11, 10), a rope (4) for connecting a potential energy block (2) is wound on the left gear wheel (11) bypassing the dead pulley (1), and two ends of a connecting rod (9) are respectively connected with the right gear wheel (10) and the front wheel steering shaft (5). In the invention, potential energy generated in the falling process of the potential energy block is utilized as kinetic energy to push the cart to move forwards, and barriers arranged on a track can be automatically avoided according to a certain period and long distance during advancing.

Under precondition without changing size of external diameter, the invention discloses integrated antenna on chip. The helix structural antenna possesses gradual changed widths of metal coils and spans of metal coils in order to reduce serial equivalent resistance of helix coils so as to reduce energy loss. Comparing with traditional antenna on chip, the disclosed antenna on chip possesses features of lowering influence of eddy current effect and approach effect in high frequency so as to reduce the said equivalent resistance Rs, and energy loss. The preparing technique is compatible to conventional CMOS technique.

The invention discloses an annular mobile air conditioner which comprises a compressor, an arc outdoor heat exchanger, an outdoor Sirocco fan, an arc indoor heat exchanger and an indoor turbine fan, wherein a grid-shaped transverse arc outdoor air inlet is formed along the lower half part of an annular shell; a round hole-shaped outdoor air outlet is formed at the upper side of the outdoor air inlet; a grid-shaped transverse arc indoor air inlet is formed along the upper half part of the annular shell; the top of the annular shell is provided with an indoor air inlet; and the outdoor Sirocco fan and the indoor turbine fan share the same motor. In the invention, the indoor part is changed into the mode with air inlet on the upper side and air outlet on the annular side; the turbine fan is used as the indoor fan, thus a volute is not needed, which can reduce energy loss in an air flow process, increase the air quantity and reduce the noise; the annular heat exchanger is used, thus the heat exchange area is increased; and the annular air outlet can better meet the requirements of customers in multiple directions at the same time.

The invention discloses an intelligent shoveling bus controlling system of a loader. According to the intelligent shoveling bus controlling system of the loader, a collecting bucket oil port, a movable arm lifting oil port, an overturning bucket oil port, a movable arm descending oil port and a floating oil port of an electric-hydraulic proportional pilot valve are connected with a collecting bucket oil port, a movable arm lifting oil port, an overturning bucket oil port, a movable arm descending oil port and a floating oil port of an electric-hydraulic proportional distribution valve respectively, a second oil inlet of the electric-hydraulic proportional pilot valve is connected with a large cavity of a movable arm oil cylinder, and an overturning bucket cylinder displacement sensor, a movable arm displacement sensor, a shoveling bucket horizontal displacement sensor, a main controller, a descending height setting button, a lifting height setting button, an electric control pilot handle and an engine controller are respectively connected with a bus. The intelligent shoveling bus controlling system of the loader is efficient, saves energy, is small in energy loss, improves the stability and comfort of work of the whole loader, is long in service life, is good in leveling function, avoids accidents, guarantees operation safety, improves operation efficiency, is favorable for upgrading and modification of products, and is used for controlling the shoveling process of the loader.

An LED illumination device includes a die casting lamp cover, a plurality of LED modules, a reflection cover, and a transparent module. A top surface of the die casting lamp cover protrudes forth to form a plurality of heat dissipating fins, and the LED modules are assembled in an accommodating room of the die casting lamp cover. The LED modules respectively include a LED lamp assembly and an isothermal vapor chamber. The reflection cover includes a plurality of openings surroundingly arranged on outside of the LED modules correspondingly. The transparent module are arranged under the die casting lamp cover and enclosed in the accommodating room. The LED illumination device can uniformly disperse light beams from the LED modules to outside for reducing energy loss, and further can efficiently dissipate heat to reduce chances of damaging the LEDs because of high temperature.

The invention discloses a scanning method for searching a maximal power point of a solar energy photovoltaic panel, which comprises the following steps of: (1) determining a power region needing scanning according to a solar energy photovoltaic power and voltage characteristic curve and determining a voltage range (A-B) needing scanning according to the power region; (2) determining two golden partition points (X1and X2) in the voltage range (A-B) needing scanning and calculating practical powers corresponding to the two golden partition points; (3) determining the voltage range of next scanning; (4) determining a new golden partition point in anew scanning voltage range, calculating the power corresponding to the new golden partition point and turning to the step (3), and repeating such the process till the maximal power point is found out; and (5) after the maximal power point is found out, tracing the maximal power point. The method can find out the maximal power point in short time and reduce energy loss.

A rotary shaft of a motor-generator of a hybrid-powered vehicle is connected to an output shaft of a torque converter connected to an output shaft of an internal combustion engine. A control of acceleration or deceleration of the vehicle is assisted by controlling the motor-generator as a motor or a generator during a time period in which a slip occurs in the torque converter with a speed change control.

A waste heat energy recovery system has a refrigerant cycle and a Rankine cycle. When the cycle operation is changed from the refrigerant cycle to the Rankine cycle, an expansion device is started after the pump is started. When the cycle operation is changed from the Rankine cycle to the refrigerant cycle, the expansion device is stopped after the pump is stopped.

The invention discloses an oven, which comprises a control panel, an oven chamber and a heater. The oven is characterized by comprising an infrared temperature sensor which is arranged outside the oven chamber and can sense temperature of food in the oven chamber, a humidity sensor which is fixed outside the oven chamber and communicated with the oven chamber, and a probe type sensor arranged in the oven chamber, wherein the infrared temperature sensor, the humidity sensor and the probe type sensor are in controllable connection with a control circuit. The invention also discloses a controlling method of the oven. According to the method, automation of roasting is realized by utilizing programmed control roasting, users are liberated by greatly reducing the roasting difficulty, and the oven door is prevented from being frequently opened, energy loss is effectively reduced, the phenomena, such as the surface of a roasted food is burnt but the center of the roasted food is not sufficiently cooked and the like, can be avoided by utilizing cooperation of the sensors, intermittent roasting and switching of different time segments and different fire powers can be effectively realized, the internal temperature of food is detected in real time, and roasting is stopped instantly after the inside of the food is cooked, so that energy consumption is reduced.

An energy generating system is provided, comprising a primary waterwheel for receiving water from a head penstock or upper pumping setup, the primary waterwheel comprising a plurality of radial arms rotatable about a primary axis, the radial arms terminating in water scoops for accommodating the water from the head penstock or upper pumping setup, the primary waterwheel defining head height. The system further comprises at least one additional waterwheel located within the head height of the primary waterwheel, the additional waterwheel also comprising a plurality of radial arms rotatable about an axis, the radial arms terminating in water scoops for accommodating either excess water from the head penstock or upper pumping setup or water that has spilled out of the water scoops of the primary waterwheel. In an example embodiment, the primary waterwheel and the at least one additional waterwheel are vertically orientated. In an example embodiment, the at least one additional waterwheel is smaller than the primary waterwheel.

The invention discloses a hybrid wind power generator. The hybrid wind power generator comprises a wind energy receiving component, a crankshaft and connecting rod component, a slide magnet component, an electromagnetic power generation component and a friction power generation component, wherein the wind energy receiving component can rotate under the action of wind, the crankshaft and connecting rod component can rotate together with the wind energy receiving component and drives the slide magnet component, the slide magnet component can reciprocatingly penetrate the electromagnetic power generation component under drive of the crankshaft and connecting rod component and applies pressure on the friction power generation component, the electromagnetic power generation component can generate power by the electromagnetic sensing theory when the slide magnet component reciprocatingly penetrate the electromagnetic power generation component, the friction power generation component can generate power by friction under the action of pressure of the slide magnet component. Induction coils are arranged around the friction power generation component, output current of the system is improved by the electromagnetic induction, and power generation efficiency of the hybrid wind power generator is remarkably improved.

The invention discloses a flywheel battery supported and driven by a split magnetic levitation switch reluctance motor. The flywheel battery comprises an enclosure and a vacuum cavity, wherein an axial permanent magnet bearing, two radial permanent magnet bearings, a motor A, a flywheel rotation shaft, a flywheel rotor, a motor B and an axial electromagnetic bearing are contained in the vacuum cavity; the flywheel rotor is fixedly sleeved at the axial center of the flywheel rotation shaft; the axial permanent magnet bearing and the axial electromagnetic bearing are arranged at the upper and lower ends of the flywheel rotation shaft respectively; the two radial permanent magnet bearings are located below the axial permanent magnet bearing and above the axial electromagnetic bearing respectively; the motor A and the motor B are arranged between the two radial permanent magnet bearings and the flywheel rotor respectively; a torque winding of the motor A and a torque winding of the motor B are connected in series, and the levitation windings are independently wound; the axial electromagnetic bearing provides controllable levitation with axial degree of freedom; the levitation winding is excited to generate radial levitation force; and the radial levitation force and the radial restoring force of the radial permanent magnet bearing provide controllable levitation with more than 4 radial degrees of freedom, thereby improving the energy storing efficiency.

The invention discloses a preparation method of anti-reflection self-cleaning coated glass, which comprises the steps of preparing a SiO2-TiO2 composite sol firstly, then carrying out film coating by using a pulling method, and forming a coarse nano thin film layer on the surface of a glass substrate through the SiO2-TiO2 composite sol; and finally, carrying out low-temperature post-treatment on the obtained product so as to obtain coated glass. By using the preparation method disclosed by the invention, the visible light transmittance of the prepared coated glass can be improved, the light transmittance is increased by 2-3%, and the prepared coated glass can achieve a photocatalytic self-cleaning effect. The preparation method disclosed by the invention is simple, a glass substrate is not required to be subjected to complex pretreatment, and coated glass is not required to be subjected to high-temperature baking. The coated glass prepared by using the method disclosed by the invention has excellent ultraviolet aging resistance; and because a coated layer is a nano film, and the surface of the nano film has a proper roughness, the nano film can achieve a physical hydrophilic effect, so that the coated layer on the surface of the glass substrate also can have a super-hydrophilic self-cleaning performance under the condition of no light.

The invention discloses an integrated electro-hydraulic servo driver hydraulic system which comprises a drive motor, a hydraulic pump, a first check valve, a second check valve, an electromagnetic reversing valve, an overflow valve, a servo valve, a hydraulic cylinder, a sealed boosting oil tank and a first throttling valve. The drive motor is connected with the hydraulic pump. The oil outlet of the hydraulic pump is connected with the first check valve. The first check valve is divided into three liquid ways at the same time. The first liquid way is connected with the port P of the electromagnetic reversing valve. The port T of the electromagnetic reversing valve is connected with the second check valve. The second liquid way is connected with the port P of the overflow valve. The port T of the overflow valve is connected with the second check valve. The third liquid way is connected with the port P of the servo valve. The port T of the servo valve is connected with the second check valve. The port A and the port B of the servo valve are communicated with the port A and the port B of the hydraulic cylinder respectively. The second check valve is sequentially connected with the sealed boosting oil tank and the port P of the first throttling valve. The port T of the first throttling valve is connected with the oil sucking opening of the hydraulic pump. The hydraulic system is not prone to heating and can stand by for a long time.

A ground shield structure is suitable for use in a circuit structure. The ground shield structure has a plurality of ground cells that are arranged on a ground plane periodically, compactly and complementarily. The slots between the ground cells are used to reduce the eddy current generated on the ground shield structure. The ground shield structure increases the slow-wave factor to slow the waves so that the area of the circuit layout can be decreased. Besides, the ground shield structure can reduce the energy loss of the inner circuit of the circuit structure and can increase the quantities of inductance and capacitance in per unit area thereon.

The invention provides a double-power liquid stream battery electric pile structure and a liquid stream battery containing the electric pile. The electric pile structure comprises two multi-runner end plates (1), two multi-runner insulation boards (2), two main stream collection plates (3), two sub-electric piles (4) and a liquid stream division plate (5), wherein, the electric pile is in a symmetrical structure, the liquid stream division plate (5) is arranged in the middle of the electric pile, and the left side and the right side of the electric pile are respectively provided with a sub-electric pile (4), a main stream collection plate (3), a multi-runner insulation board (2) and a multi-runner end plate (1) in turn; an independent electrolyte solution circulation system of single inlet liquid and outlet liquid is formed on each sub-electric pile; the length of the runner of the electrolyte solution in the electric pile is halved, thus the flow resistance of the electrolyte solution can be greatly reduced, the power consumption of the pump is reduced, the potential difference of the electrolyte solution in the runner can be decreased, the polarization of the battery is reduced, and the energy loss of the battery is reduced. Compared with single electric pile of the common liquid stream battery, the single battery number in the electric pile is doubled, the power can be doubled, and the energy efficiency of the liquid stream battery can not be reduced.

The invention provides a control method of an inverter compressor, a control system of the inverter compressor, an air conditioner, computer equipment and a computer readable storage medium. The method comprises the following steps: acquiring output current of the inverter compressor in real time; calculating the time of duration of the output current which is continuously greater than preset current; and when the time of duration is greater than a time threshold value, controlling the inverter compressor to stop or reducing carrier frequency. By controlling the inverter compressor to stop orreducing the carrier frequency, energy loss of a power switch is reduced when the inverter compressor is in an overload situation, the circumstances that the temperature of the power switch is over high and thus the power switch is damaged are avoided, and meanwhile, the circumstance that ageing of the inverter compressor is accelerated and the inverter compressor is even damaged due to over-longoverload running time is avoided.

The invention relates to a solar refrigerator, in particular to a solar photovoltaic refrigerator system based on a DC variable frequency compressor and phase change cold storage. The system mainly comprises two parts, i.e. a solar photovoltaic generation system and a refrigeration system of a refrigerator. The solar photovoltaic generation system comprises a photovoltaic panel, a controller and a storage battery; and the refrigeration system of the refrigerator mainly comprises the compressor, a condenser, a throttling device, a freezer / refrigerator evaporator and a cold storage device evaporator connected with the freezer / refrigerator evaporator in parallel. A heat tube is adopted as a device for transferring heat between a cold storage device and the space of the refrigerator. The cold storage device stores cold when electric power is sufficient, and releases cold when the electric power is insufficient. The storage battery supplies power when the cold of the cold storage device is fully released and the power that the photovoltaic panel generates is still insufficient. In addition, the storage battery and the controller of the photovoltaic generation system are integrated with the refrigerator, and the appearance structure is more attractive and practical. The system fully does not consume the electric power of a power grid, and has very profound research significance in saving electric power and effectively utilizing renewable energy.