| Patents for H02M 5 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases (13,094) |
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| 04/07/2009 | US7514898 Low loss propulsion system |
| 04/07/2009 | US7514813 Electric power supply system |
| 04/02/2009 | WO2005059570A3 Step sinusoidal voltage controlling method for hid, fluorescent and incandescent light dimming applications |
| 04/02/2009 | US20090086515 Direct ac power converting apparatus |
| 04/01/2009 | EP2041864A1 Multi-function passive frequency mixer |
| 04/01/2009 | CN201215882Y Ice melting apparatus |
| 04/01/2009 | CN101399501A Power converter and its control method |
| 03/31/2009 | US7511979 Automatic phase converter |
| 03/31/2009 | US7511472 Power measuring apparatus |
| 03/31/2009 | US7511446 System and method for starting a wound rotor motor |
| 03/26/2009 | WO2009039305A2 Current waveform construction to generate ac power with low harmonic distortion from localized energy sources |
| 03/26/2009 | DE102007042528A1 System und Verfahren SYSTEM AND METHOD |
| 03/26/2009 | CA2699941A1 Current waveform construction to generate ac power with low harmonic distortion from localized energy sources |
| 03/25/2009 | EP2038991A2 High voltage power supply |
| 03/25/2009 | CN201213242Y Power-on slow starting device for a high voltage frequency transformer and the high voltage frequency transformer |
| 03/25/2009 | CN101394136A Industrial frequency phase shift apparatus |
| 03/25/2009 | CN101394135A Control system and controller power source for electric appliance |
| 03/25/2009 | CN101394134A Three-phase digital time division balance large power AC welding power source |
| 03/25/2009 | CN100472933C Global closed loop control system with DV/DT control and EMI/switching loss reduction |
| 03/24/2009 | US7508689 Inverter and a drive system using the inverter |
| 03/24/2009 | US7508685 Stabilized power supply |
| 03/19/2009 | WO2009033574A1 System for pre-charging a reservoir capacitor by means of a supply voltage and corresponding method |
| 03/19/2009 | US20090073735 Analog duty cycle replicating frequency converter for pwm signals |
| 03/19/2009 | CA2704723A1 Method and system for bypassing a power cell of a power supply |
| 03/18/2009 | EP2036181A1 Hvdc system and method to control a voltage source converter in a hvdc system |
| 03/18/2009 | CN201210387Y Backlight electricity supplying construction circuit for LCD screen |
| 03/18/2009 | CN101388642A Power-on buffering and dynamic urgent braking apparatus for AC servo system |
| 03/18/2009 | CN101388610A Voltage mutual inductor resonance step-up method in related full closed combined electrical equipment |
| 03/18/2009 | CN101388302A Circuit system with supply voltage for driving an electromechanical switch |
| 03/18/2009 | CN100471031C Small high-speed asynchronous power generator |
| 03/18/2009 | CN100471021C A complementary output drive control method with high resolution, frequency conversion and adjustable phase |
| 03/18/2009 | CN100471020C Dead zone compensation method in pulse duration modulation variable frequency power supply |
| 03/12/2009 | WO2005124959A3 Device for the transmission of electrical energy between supply networks |
| 03/12/2009 | US20090067206 Rectifier Circuit and Three-Phase Rectifier Device |
| 03/11/2009 | EP2034600A1 Single-phase to three-phase converter |
| 03/11/2009 | EP2034599A2 Load driving apparatus |
| 03/11/2009 | EP2034598A1 Switching pattern creating method for ac-ac direct conversion device |
| 03/11/2009 | EP1495533B1 Power converter |
| 03/11/2009 | CN201207752Y On-line integration type light modulation control device for air discharge lamp |
| 03/11/2009 | CN201207740Y Current limiting protection remote control device for ceiling fan lamp |
| 03/11/2009 | CN201207619Y Triangular wave control frequency anti-overlapping device |
| 03/11/2009 | CN201207618Y Energy feedback device based on power unit series connection type high-voltage frequency transformer |
| 03/11/2009 | CN201207617Y Low-voltage complete switch and control device applicable to different voltage stages |
| 03/11/2009 | CN101385225A Power converter provided with bus bar |
| 03/11/2009 | CN101383561A Power source frequency converting device |
| 03/11/2009 | CN101383550A Power source frequency converting device |
| 03/11/2009 | CN101383218A Radio frequency electric power for generating four-pole electric field |
| 03/11/2009 | CN101382814A PWM controlled RC step-down power supply circuit based on feedback |
| 03/11/2009 | CN100468947C AC motor matrix type controller with DC excitation function |
| 03/11/2009 | CN100468937C Electric motor drive |
| 03/11/2009 | CN100468922C Wind power plant |
| 03/10/2009 | US7502238 Rectifier for reducing current harmonics from unbalanced source |
| 03/10/2009 | US7502233 DC power supply using either AC or DC input for both |
| 03/05/2009 | US20090059638 Portable device for generating two phases from a single electrical phase |
| 03/05/2009 | US20090059625 Single-phase to three-phase converter |
| 03/04/2009 | EP2031746A1 Input/output duty control method for ac-ac direct conversion device |
| 03/04/2009 | EP2030313A2 Ride-through method and system for hvac&r chillers |
| 03/04/2009 | EP2030312A2 Method of controlling a three level converter |
| 03/04/2009 | CN201204550Y Energy-saving aging device for AC input power supply converter |
| 03/04/2009 | CN201204549Y Square wave frequency conversion power source |
| 03/04/2009 | CN201204548Y Constant frequency power supply apparatus |
| 03/04/2009 | CN101378227A Power unit for cascade apparatus |
| 03/04/2009 | CN101378208A Control system for rail type conveyor |
| 03/04/2009 | CN101377662A Fuzzy control heating apparatus of full automatic soya-bean milk machine |
| 03/04/2009 | CN101377661A SCM drive control device of full automatic soya-bean milk machine |
| 03/04/2009 | CN100466442C Multiple rectifying device formed by 12 pulse rectification |
| 03/04/2009 | CN100466428C Medium power and low voltage frequency converter based on insulation grating bipolar transistor |
| 03/03/2009 | US7500118 Network device with power potential rectifier |
| 03/03/2009 | US7499300 Self-driven synchronous rectification and voltage stabilization circuit |
| 03/03/2009 | US7499299 Method and apparatus for reducing body diode conduction of synchronous rectifiers |
| 03/03/2009 | US7499297 Low-harmonics, polyphase converter circuit |
| 03/03/2009 | US7499296 Electric power converter device with control means and process and converting power |
| 03/03/2009 | US7499291 DC power transmission system of voltage source converter using pulse-interleaving auxiliary circuit |
| 02/26/2009 | US20090052217 Method and apparatus for stabilizing voltage of intermediate circut of frequency converter |
| 02/26/2009 | US20090052209 Inverter Device |
| 02/26/2009 | DE102007055673B3 Mains-operated static frequency changer operating method, involves determining parameter of model function in self learning phase for different load conditions, where model value of intermediate circuit voltage is computed by function |
| 02/26/2009 | DE102007038434A1 Verfahren zum Betreiben einer elektrischen Schaltung sowie elektrische Schaltung zur Verminderung von Überspannungen an von Wechselrichtern gespeisten Lasten A method of operating an electrical circuit and electrical circuit for reducing overvoltages across fed by inverters loads |
| 02/25/2009 | EP2028755A2 Method and apparatus for stabilizing voltage of intermediate circuit of frequency converter |
| 02/25/2009 | EP2028754A1 A dimmer with charge pump |
| 02/25/2009 | CN201199673Y Stepless voltage-regulating device |
| 02/25/2009 | CN101375492A Polyphase voltage converter control method |
| 02/25/2009 | CN101375490A Ride-through method and system for hvac&r chillers |
| 02/25/2009 | CN101373931A Method and apparatus for stabilizing voltage of intermediate circuit of frequency converter |
| 02/25/2009 | CN100464487C Inverter control method and its device |
| 02/24/2009 | US7495940 Method and device for producing rectifier gating signals using a peak detector |
| 02/24/2009 | US7495937 PWM cycloconverter |
| 02/24/2009 | US7495936 Three-phase voltage-fed AC/DC converter |
| 02/19/2009 | WO2008156979A3 System and method for producing anharmonic multi-phase currents |
| 02/19/2009 | US20090046490 Igbt/fet-based energy savings device, system and method |
| 02/19/2009 | US20090046489 Insulated transformers, and power converting device |
| 02/19/2009 | DE102008007659A1 Indirect voltage converter, has upper and lower valve branches of each phase module of load-sided multi-phase power inverter with two-pole subsystem, and multi-phase network-guided power inverter provided as network-sided power inverter |
| 02/18/2009 | EP2025051A2 Universal power converter |
| 02/18/2009 | EP1900088B1 Circuit arrangement for detecting zero crossings of an alternating voltage |
| 02/18/2009 | CN201197120Y High-frequency current source energy supplying system |
| 02/18/2009 | CN101371622A A universal dimmer |
| 02/18/2009 | CN101369782A Control method of unit series connection type high voltage frequency convertor |
| 02/18/2009 | CN101369781A AC high voltage high power adjustable CVCF power apparatus and its emendation method |
| 02/18/2009 | CN101369780A Unit bypass apparatus and control method of unit cascading high voltage frequency convertor |
| 02/18/2009 | CN100463350C Controlling circuit of DC pulsating countercurrent device |
| 02/17/2009 | US7492620 DC-AC converter and controller IC thereof |