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Class Information
Number: 363/47
Name: Electric power conversion systems > Current conversion > With means to introduce or eliminate frequency components > In rectifier systems > Including means for reducing ripples from the output > With low pass l or lc filter
Description: Subject matter wherein a low pass inductor or inductor-capacitor filter is used to reduce the ripple.

Sub-classes under this class:

Class Number Class Name Patents
363/48 For semiconductor rectifier 139

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8624369 Balance filter packaging chip having balun mounted therein and manufacturing method thereof Jan. 7, 2014
8593085 Device for charging accumulator means Nov. 26, 2013
8587971 Electronic current transformer based on complete self-excitation power supply Nov. 19, 2013
8570778 Power converter with a single diode rectifier and a filter Oct. 29, 2013
8564981 Modular multi-level power converter with second and third order harmonics reduction filter Oct. 22, 2013
8537576 Generation of highly accurate and highly dynamic direct currents from a rectifier group and an active filter which is connected in parallel with the load for smoothing purposes Sep. 17, 2013
8513911 Power converters Aug. 20, 2013
8488346 Power conversion apparatus and method Jul. 16, 2013
8411473 Three-phase power supply with three-phase three-level DC/DC converter Apr. 2, 2013
8395913 Method and device of electrical power Mar. 12, 2013
8390149 Harmonic filter with integrated power factor correction Mar. 5, 2013
8331115 Power switching system to increase induction heating to a load from available AC mains power Dec. 11, 2012
8325500 Inverter filter including differential mode and common mode, and system including the same Dec. 4, 2012
8325501 Method and device of electrical power Dec. 4, 2012
8278882 Charging monitor Oct. 2, 2012
8259473 Method for operation of a converter circuit and apparatus for carrying out the method Sep. 4, 2012
8159841 Low harmonic rectifier circuit Apr. 17, 2012
8027177 Isolated switching power supply apparatus Sep. 27, 2011
8022575 Damping electromagnetic oscillations in power systems Sep. 20, 2011
8018696 Tertiary lock system power unit Sep. 13, 2011
8008886 Power converter Aug. 30, 2011
7907427 Inverter Mar. 15, 2011
7898827 Active EMI filtering using magnetic coupling cancellation Mar. 1, 2011
7868730 Common-mode filtering device and speed variator comprising such a device Jan. 11, 2011
7821799 Ripple reduction for switch-mode power conversion Oct. 26, 2010
7800330 Method for regulating a voltage or a current of an RLC filter, a recording medium and vehicles for this method Sep. 21, 2010
7787268 Power switching system to increase induction heating to a load from available AC mains power Aug. 31, 2010
7778052 Method for operating a converter circuit and apparatus for implementing the method Aug. 17, 2010
7742319 Transformer having resonant inductance Jun. 22, 2010
7667988 Filter Feb. 23, 2010
7593244 Limit for the harmonics of a current Sep. 22, 2009
7583136 Active filter for reduction of common mode current Sep. 1, 2009
7546230 Electromagnetic response model with improved high frequency stability Jun. 9, 2009
7453330 Line filter Nov. 18, 2008
7385438 Active filter for reduction of common mode current Jun. 10, 2008
7382112 Methods and devices for input waveform control in switching power supplies Jun. 3, 2008
7362162 Line filter Apr. 22, 2008
7356626 Method and device for signal protection Apr. 8, 2008
7209024 Filter circuit and power supply unit Apr. 24, 2007
7206182 Negative ions generating circuit design with decreasing high frequency noise and apparatus thereof Apr. 17, 2007
7200015 Automatic capacitor discharge for power supplies Apr. 3, 2007
7190143 Pulse width modulation (PWM) rectifier with variable switching frequency Mar. 13, 2007
7187229 Active filter for reduction of common mode current Mar. 6, 2007
7057375 Power factor correction Jun. 6, 2006
7057908 Method and arrangement in connection with network inverter Jun. 6, 2006
7023171 Integrated inverter for driving multiple electric machines Apr. 4, 2006
7019994 Switched-mode power supply with a damping network Mar. 28, 2006
7016205 Ripple-current reduction schemes for AC converters Mar. 21, 2006
6989998 Method of determining a required inductance-current relationship for an inductor Jan. 24, 2006
6972976 Compensation method for a voltage unbalance Dec. 6, 2005

1 2 3

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