Inventor

KREIN PHILIP T

US36 patents

⚠️ This page may combine multiple inventors who share the name “KREIN PHILIP T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KREIN PHILIP T

UNIV ILLINOIS

Self-excited power minimizer/maximizer for switching power converters and switching motor drive applications

Feedforward active filter for output ripple cancellation in switching power converters

Switched capacitor system for automatic battery equalization

Method and apparatus for starting power converters

Methods and devices for input waveform control in switching power supplies

Dynamic current sharing dc-dc switching power supply

Systems and methods for pulse width modulation

Commutation technique for an AC-to-AC converter based on state machine control

Systems and methods for photovoltaic string protection

Angle-based speed estimation of alternating current machines utilizing a median filter

System and method for compensating for high frequency application of ripple correlation to minimize power losses in induction machines

SOLARBRIDGE TECHNOLOGIES INC

Voltage-sensed system and method for anti-islanding protection of grid-connected inverters

Apparatus, system, and method for controlling multiple power supplies

Modular system for unattended energy generation and storage

Methods for minimizing double-frequency ripple power in single-phase power conditioners

Modular system for unattended energy generation and storage

Apparatus and method for controlling a power supply

Methods for minimizing double-frequency ripple power in single-phase power conditioners

Ripple correlation control based on limited sampling

TEKTRONIX INC

Touch panel with automatic nulling

Touch panel system

Touch panel with automatic frequency control

Touch panel with discontinuities in touch sensitive surface

CHAPMAN PATRICK L

Apparatus for converting direct current to alternating current using an active filter to reduce double-frequency ripple power of bus waveform

Apparatus for converting direct current to alternating current using a frequency converter

Method and apparatus for controlling an inverter using pulse mode control

Apparatus and method for controlling DC-AC power conversion

KREIN PHILIP T

Voltage-sensed system and method for anti-islanding protection of grid-connected inverters

Methods for minimizing double-frequency ripple power in single-phase power conditioners

System and method for improving power conversion for advanced electronic circuits

Methods and apparatus for providing an extremely fast response in switching power converters

SUNPOWER CORP

Apparatus and method for controlling DC-AC power conversion

Apparatus and method for controlling DC-AC power conversion

Apparatus for converting direct current to alternating current using multiple converters

SANDIA CORP

Microinverters for employment in connection with photovoltaic modules

SHENOY PRADEEP S

System and method for optimizing solar power conversion