VACON OYJ Patent applications |
Patent application number | Title | Published |
20150342076 | HOUSING ARRANGEMENT OF A POWER ELECTRONICS DEVICE - A housing arrangement of a power electronics device, including one power module or several identical power modules, each module with at least one part connected to a hazardous voltage, the arrangement further including a housing part having room for at least one power module. Each power module includes an enclosure part which essentially surrounds the power module and includes electrically insulating material. All the external connections of the power module are placed on one single wall of the enclosure part. The power modules and the enclosure part of the power modules are arranged such that when the power module is installed to the housing part the power module is electrically insulated from the housing part and external connections of the power module are directed to the front side of the housing part. | 11-26-2015 |
20150340943 | ELECTRIC INTERFERENCE LIMITATION - A method and an arrangement for limiting the interference to a common electric power network, generated by a power electronics device, e.g. a frequency converter, which power electronics device comprises of at least one switch type component being able to change the output voltage value at a predefined permissible switching frequency range. The method comprises scanning through the permissible switching frequency range, recording measured common mode current values as a function of the switching frequency, and setting the final switching frequency of the switch type component out of a value where a local maximum value of the common mode current has been recorded. | 11-26-2015 |
20150206041 | ARRANGEMENT FOR CONNECTING SET VALUES CONCERNING PERFORMANCE TO AN ELECTRONICS DEVICE - Arrangement for connecting set values concerning performance relating to an electronics device to the electronics device, more particularly to a power electronics device, such as a frequency converter, which arrangement includes a rating plate part. The rating plate part is a separate unit belonging to the nameplate arrangement of the electronics device, which unit may be affixed to the electronics device. The rating plate part includes a memory member, in which values concerning the performance of the device are recorded. The rating plate part further includes an area in which information corresponding to the information recorded in the memory member is printed and which area remains visible when the rating plate part is affixed to the electronics device. | 07-23-2015 |
20140305611 | LIQUID COOLING ARRANGEMENT - Arrangement for cooling, with liquid, one or more electrical devices or structural units of an electrical device that is/are in at least one installation enclosure. A main channeling includes two channels, for distributing the liquid to the electrical devices to be cooled or to the structural units of the electrical devices, a liquid container, which is connected to one of the main channels directly and to the other main channel via a suction channel a pump and a heat exchanger, and also a shut-off valve. The liquid container is disposed below the electrical devices to be cooled or their structural elements, and the amount of liquid to be contained in the arrangement is configured to be such the ends of both the suction channel and the return channel that are inside the liquid container are always situated below the liquid surface. | 10-16-2014 |
20140304927 | INSTALLATION ARRANGEMENT FOR A POWER ELECTRONICS DEVICE - Arrangement for moving a structural unit ( | 10-16-2014 |
20140168897 | POWER ELECTRONICS DEVICE AND ITS COOLING ARRANGEMENT - Liquid-cooled power unit of a power electronics device, which power unit includes at least two power modules, the cooling surface of which power modules is provided with pin-type protrusions and which power modules are fixed to the frame part of the power unit. A liquid duct is arranged inside the frame part of the power unit, and the power modules are fixed to the points of the apertures situated in the frame part on both sides of the liquid duct in such a way that the pin-type protrusions of the power modules are situated in the liquid duct. A wedge-shaped part is disposed in the liquid duct, which wedge-shaped part includes a wedge-shaped front part for spreading the liquid flow into two essentially equal flows at the point of the power modules. | 06-19-2014 |
20140140005 | POWER ELECTRONICS DEVICE - Power electronics device, such as a frequency converter, which includes liquid-cooled power units (REC | 05-22-2014 |
20130121845 | COMPRESSOR STARTING METHOD AND APPARATUS - A piston type compressor wherein the position of the piston highest pressure point is indicated and the rotor of the motor at the optimal starting angle aligned prior to the actual compression operation by providing a pre-pulse to rotate the rotor of the motor at least one full rotation at a certain frequency, during rotation measuring the load torque by the frequency converter as well as indicating the maximum load torque point and at the end aligning the rotor of the motor at the optimal starting angle of about 180° from the maximum pressure angle, and at the beginning of the actual compression operation setting the rotor position opposite to the maximum torque angle by feeding direct current to the stator winding and starting the motor by supplying maximum motor current to the motor to give the maximum torque and acceleration. | 05-16-2013 |
20110270545 | MEASURING OF EARTH FAULT CURRENT - Method and apparatus for measuring an earth fault current in an output circuit of an inverter (INU) operating on the PWM principle and forming alternating-current voltage from direct-current voltage, the output currents (i | 11-03-2011 |
20110044080 | CONVERTER - A converter includes a converter bridge ( | 02-24-2011 |
20100253256 | FREQUENCY CONVERTER START-UP - Method and apparatus to start a frequency converter equipped with a direct current intermediate circuit, particularly when a permanent magnet motor whose rotor is rotating at the start-up time is connected to it, wherein the frequency converter has a network bridge ( | 10-07-2010 |
20080259658 | Limit for the harmonics of a current - A wiring arrangement and an appliance for limiting the harmonics of a current supplied to a frequency converter from an AC electricity supply network, which frequency converter can be connected to a three-phase AC electricity supply network, in which frequency converter is an uncontrolled network bridge ( | 10-23-2008 |