Brushless Multiphase Self-Commutated Controller Details


BMSCC is a patented Brushless Multiphase Self-Commutated Controller (BMSCC) that realizes a pure gyratorsynchroconverter, or virtual synchronous machine for lowest cost, highest efficiency, highest power density smart-power-converter products, such as used in the smart grid, photovoltaics (PV), electric vehicles (EV), etc., or the only Bi-Directional Multiphase Inductive Power Transfer System (M-IPTSthat uses magnetic sharing.


BMSCC is a patented Brushless Multiphase Self-Commutated Controller that realizes a pure gyratorsynchroconvertervirtual synchronous machine or the only Bi-Directional Multiphase Inductive (Wireless) Power Transfer System (M-IPTS) for the future focus of BEM, such as compact, high efficiency, low cost smart-power-converter products for the smart grid, photovoltaics (PV), electric vehicles (EV), etc. By electronically controlling the sharing of magnetic energy between phases of a compact and efficient Position Dependent Flux High Frequency Transformer (PDF-HFT) with proprietary modulation techniques under inherent resonant or soft switching, BMSCC acts as a phase lock loop to directly, sensorlessly, instantaneously, and automatically control the transfer and translation of speed synchronized, bidirectional power with pure sinusoidal waveform of any frequency (including DC), any number of phases, or any electrical phase angles (or impedances) to another power with pure sinusoidal waveform of any other frequency, any other number of phases, or any other electrical phase angles, all of which can be speed synchronized. For example, SYNCHRO-SYM’s Brushless Real Time Emulation Controller (BRTEC) comprises BMSCC and as a result, follows the same concept of operation but without BRTEC’s automatic and instantaneous speed synchronization.  All is accomplished with a compact, inexpensive, integrated, high power, high efficiency, durable, multiphase position-dependent-flux high frequency transformer (PDF-HFT) instead of several banks of large, expensive, inefficient, and delicate low frequency capacitors, such as found in the DC Link Stage of most other electronic power conditioning nodes.

All high performance electronic power inverters, including BMSCC, comprise a circuit topology consisting of three stages with a primary stage of active electronics to translate frequency (including DC), phase, and voltage level on one side of an intermediate stage, such as the DC link stage, to another frequency (including DC), phase and voltage level by a secondary stage of active electronics on the other side of the intermediate stage. The primary or secondary electronic stages have half the number of active electronic power semiconductors with  half the cost and loss as the complete electronic power inverter.  But only the symmetrical BMSCC comprises similar primary and secondary stages of bi-directional electronics (e.g., simple choppers) on each side of an intermediate stage, which is a position dependent flux high frequency transformer (PDF-HFT).

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