by progressive increase of frequency of supply to primary circuit of motor

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CPC
H02P1/30

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HELECTRICITY H02Electric power H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS H02P1/00Arrangements for starting electric motors or dynamo-electric converters

Current Industry

H02P1/30by progressive increase of frequency of supply to primary circuit of motor

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Patents Grantslast 30 patents

Information Patent Grant
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by progressive increase of frequency of supply to primary circuit of motor

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Wireline power supply during electric powered fracturing operations

Hybrid drive circuit for variable speed induction motor system and...

Hybrid drive circuit for variable speed induction motor system and...

Wireline power supply during electric powered fracturing operations

Motor starter and method for starting an electric motor

Method for identifying the magnetic anisotropy of an electric rotar...

Arc resistant drive with bypass and synch transfer

Motor control system with integrated solid-state contactor and rela...

Hybrid drive circuit for variable speed induction motor system and...

Connecting device for motor and supply network

Motor control device

Method and device for operating an electric motor

Frequency converter, bypass frequency conversion control system and...

Three-phase AC/AC converter with quasi-sine wave HF series resonant...

Acceleration method for V/F controlled induction motor in flux-weak...

Hybrid drive circuit for variable speed induction motor system and...

Integrated controller for closure operator unit

Cooling system with increased efficiency

Circuit and method for reducing inrush current of a three phase motor

Driver circuit and method for single-phase and three-phase inductio...

Motor control apparatus and method for controlling motor

Circuit and method for reducing inrush current of phase converter m...

Systems, apparatus, and methods for soft starting large AC motors w...

Method and device for starting motors in weak grids

Control device and control method for vehicular power system

Cooling system with increased efficiency

Hybrid electric-power supplying system

Soft start drive for mobile refrigeration unit

Control methodology for an AC starter-generator system

HVAC/R system with variable frequency drive power supply for three-...

Patents Applicationslast 30 patents

WIRELINE POWER SUPPLY DURING ELECTRIC POWERED FRACTURING OPERATIONS

HYBRID DRIVE CIRCUIT FOR VARIABLE SPEED INDUCTION MOTOR SYSTEM AND...

WIRELINE POWER SUPPLY DURING ELECTRIC POWERED FRACTURING OPERATIONS

ELECTRIFIED VEHICLE CONTROL TO DETECT STATUS OF INDIVIDUAL PHASES O...

ARC RESISTANT DRIVE WITH BYPASS AND SYNCH TRANSFER

HYBRID DRIVE CIRCUIT FOR VARIABLE SPEED INDUCTION MOTOR SYSTEM AND...

MOTOR STARTER AND METHOD FOR STARTING AN ELECTRIC MOTOR

METHOD FOR IDENTIFYING THE MAGNETIC ANISOTROPY OF AN ELECTRIC ROTAR...

MOTOR CONTROL DEVICE

THREE-PHASE AC/AC CONVERTER WITH QUASI-SINE WAVE HF SERIES RESONANT...

HYBRID DRIVE CIRCUIT FOR VARIABLE SPEED INDUCTION MOTOR SYSTEM AND...

Method and Device for Operating an Electric Motor

ACCELERATION METHOD FOR V/F CONTROLLED INDUCTION MOTOR IN FLUX-WEAK...

DRIVER CIRCUIT AND METHOD FOR SINGLE-PHASE AND THREE-PHASE INDUCTIO...

HYBRID DRIVE CIRCUIT FOR VARIABLE SPEED INDUCTION MOTOR SYSTEM AND...

CIRCUIT AND METHOD FOR REDUCING INRUSH CURRENT OF A THREE PHASE MOTOR

WIRELINE POWER SUPPLY DURING ELECTRIC POWERED FRACTURING OPERATIONS

CIRCUIT AND METHOD FOR REDUCING INRUSH CURRENT OF PHASE CONVERTER M...

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CONTROL DEVICE AND CONTROL METHOD FOR VEHICULAR POWER SYSTEM

SYSTEMS, APPARATUS, AND METHODS FOR SOFT STARTING LARGE AC MOTORS W...

Method and Device for Starting Motors in Weak Grids

HYBRID ELECTRIC-POWER SUPPLYING SYSTEM

COOLING SYSTEM WITH INCREASED EFFICIENCY

METHOD AND DEVICE FOR AN INDUCTION MOTOR START

CONTROL METHODOLOGY FOR AN AC STARTER-GENERATOR SYSTEM

HVAC/R SYSTEM WITH VARIABLE FREQUENCY DRIVE POWER SUPPLY FOR THREE-...

ELECTROMECHANICAL SYSTEM HAVING A VARIABLE FREQUENCY DRIVE POWER SU...

Bypass and Synchronous Transfer Arrangement for a Medium Voltage Dr...

FAN AND CONTROLLING DEVICE THEREOF