Patent
Method for controlling power flow between an electrochemical cell and a power grid
TLDR
In this paper, a method for controlling a force-commutated inverter coupled between an electrochemical cell and a power grid for adjusting the magnitude and direction of the electrical energy flowing there between is presented.Abstract:
A method for controlling a force-commutated inverter coupled between an electrochemical cell and a power grid for adjusting the magnitude and direction of the electrical energy flowing therebetween. Both the real power component and the reactive power component of AC electrical energy flow can be independently varied through the switching waveform presented to the intermediately coupled inverter. A var error signal is derived from a comparison of a var command signal with a signal proportional to the actual reactive power circulating between the inverter and the power grid. This signal is presented to a voltage controller which essentially varies only the effective magnitude of the fundamental voltage waveform out of the inverter, thereby leaving the real power component substantially unaffected. In a similar manner, a power error signal is derived by a comparison of a power command signal with a signal proportional to the actual real power flowing between the electrochemical cell and the power grid. This signal is presented to a phase controller which varies only the phase of the fundamental component of the voltage waveform out of the inverter relative to that of the power grid and changes only the real power in proportion thereto, thus leaving the reactive power component substantially unaffected.read more
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References
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Patent
High frequency power supply
TL;DR: In this article, a static, single-phase, alternating current supply for powering an inductive load is presented, where the load is an induction heating coil with parallel power factor correcting capacitors, but equivalent elements consisting of parallel connected inductance and capacitance may be incorporated in the system and any external load can then be powered.
Patent
Standby power supply system
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TL;DR: In this article, a standby power supply system utilized for continuously supplying alternating current power at a regulated value to a load independent of the line power amplitude of continuity is described, where direct current feedback circuitry is provided for improving the AC-DC synchronization, minimizing the drain on the source and holding the direct current relatively constant.
Patent
High frequency power generator
TL;DR: In this paper, a static inverter system capable of providing ac. power at frequencies as high as 10 KHz is characterized by an exceptionally high power factor and efficiency and employs one or more capacitive storage circuits on a time sequenced basis to cyclically and successively charge from a dc. power supply and discharge through an ac. load.