34results about How to "Small output capacity" patented technology

The invention provides an integrated standard device for field calibration of an extra/ultra high voltage capacitor voltage transformer (CVT). The device comprises a test power supply, a test lifting platform, a standard appliance, a measuring instrument and a vehicle platform, wherein the test power supply comprises cascade upper and lower level test transformers, a secondary compensating reactor and a voltage regulator; the standard appliance comprises cascade upper and lower level standard voltage transformers and a high voltage isolated transformer; the test lifting platform comprises a base, transmission mechanisms and insulating support members; the measuring instrument comprises a transformer calibrator and load boxes; all the equipment is fixedly installed on the vehicle platform;and the test lifting platform can lift in the vertical direction. The upper and lower level standard voltage transformers in the standard device can troubleshoot the standard device by way of mutual calibration in the field and complete field calibration of the extra/ultra high voltage CVT, without unloading.

A linear transfer mechanism includes a guide member, a transfer carriage movable along a horizontal linear transfer path provided on the guide member, and a drive mechanism provided with a drive pulley and an output belt wound around the drive pulley for reciprocating movement in a reciprocating movement section in parallel to the transfer path. The transfer mechanism also includes a drive source for driving the drive pulley. The transfer carriage is connected with the output belt of the drive mechanism by a connecting member. Both the drive mechanism and the drive source are supported by the guide member.

The present invention relates to a motor driving system suitable for driving induction motor with large starting torque. It is characterized by that it utilizes the commercial power supply to start to supply power to induction motor whose primary winding is connected into delta form to make the induction motor be started, after said induction motor is started, the described primary winding is converted into star connection, then the power supply is converted into the power supply by utilizing VVVF transformer of AC voltage in which the output phase and voltage phase of commercial power supply are synchronous, then the VVVF transformer can be used for providing AC voltage with voltage and frequency expected by induction motor.

The invention relates to a simultaneous power supply flyback cycle conversion type single-stage multi-input inverter with energy storage equipment. A circuit structure of the inverter is formed by connecting multiple not-common-ground input filters and a common output isolation energy storage voltage transformation cycle conversion filter circuit by virtue of a multi-input single-output high-frequency inverter circuit with a series simultaneous selector switch, and a circuit with functions of charging the energy storage equipment and suppressing a voltage spike of a power switch is connected between two ends of a power switch of a two-way power flow single-input single-output high-frequency inverter circuit and an output end of an input filter of the nth path of energy storage equipment, wherein n is a natural number greater than 1; each input end of the multi-input single-output high-frequency inverter circuit is connected with the output end of each input filter in a one-to-one correspondence manner; the output end of the multi-input single-output high-frequency inverter circuit is connected with an input end of an energy storage type transformer of the output isolation energy storage voltage transformation cycle conversion filter circuit. A key technology is laid for realizing a small-capacity distributed power supply system with energy storage equipment.

A conductive grindstone 12, a circular disk-like discharge electrode 14 with an outer rim 14a that can access a machining surface 12a of the grindstone, an electrode rotating device 16, a position controlling device 18 that controls the relative position between the outer rim of the electrode and the grindstone, a voltage applying device 20 for applying voltage pulses between the grindstone and the electrode, and a mist-supplying device 22 that supplies pressurized conductive mist between the grindstone and the electrode are provided. The pressurized conductive mist is a mixture of a low-conductivity aqueous solution and compressed air. A plasma discharge is generated between the grindstone and the electrode by means of this pressurized conductive mist, and the grindstone is subjected to truing. In this way, grindstone essentricity and deflection can efficiently be removed, the grindstone does not deform, high-accuracy truing is achieved, the power supply can be compact with a small power output, no complicated control circuit or control device is needed, and consumable parts such as the electrode can easily be manufactured and remachined.

The invention relates to an isolated flyback cycle-type single-stage multi-input inverter with external parallel time-sharing selection switches. A circuit structure of the isolated flyback cycle-typesingle-stage multi-input inverter is formed by connecting multiple common-ground input filters and a common output isolated energy storage and variable-voltage cycle conversion filter circuit througha multi-input and single-output high frequency inverter circuit with external parallel time-sharing selection four-quadrant power switches; each input end of the multi-input and single-output high frequency inverter circuit is connected with an output end of each input filter in a manner of one-to-one correspondence; and the output end of the multi-input and single-output high frequency invertercircuit is connected with the input end of the output isolated energy storage and variable-voltage cycle conversion filter circuit. The inverter has the characteristics that multiple input sources aregrounded in common, time-sharing power supply is achieved, output is electrically isolated from input, the energy storage and cycle conversion filter circuit is shared, the circuit is simple, single-stage conversion is achieved, the isolated flyback cycle-type single-stage multi-input inverter is high in in efficiency, high in reliability in load short circuit and wide in application prospect, and a key technology is laid for achieving a small-capacity distributed power supply system of using multiple new energy sources for combined power supply.

The invention relates to a series and power supply-isolation flyback DC chopping type monopole multi-input inverter. The circuit structure is formed by connecting a plurality of input filters which are not in common ground and a shared output filtering circuit through a multi-input and single-output combined isolation bidirectional flyback DC chopper, each input end of the multi-input and single-output combined isolation bidirectional flyback DC chopper is connected with an output end of each input filter in one-to-one correspondence, and an output end of the multi-input and single-output combined isolation bidirectional flyback DC chopper is connected with the output filtering circuit. The inverter has the characteristics of divided or simultaneous power supply, monopole power conversion,high power density, high conversion efficiency, high reliability during short-circuit of a load, small output capacity, wide application prospect and the like, multiple input sources are not in common ground, an output and an input are electrically isolated, and a key technology is laid for a small-capacity distributed power supply system for achieving combined power supply of various new energysources.