• The EMS of today relies on the same non-optimal asymmetric electric motor-generator system circuit and control architecture (A-EMS)—an “active-stator” with an independently-excited multiphase winding set (active winding set) that solely delivers the working power to the electromechanical power conversion process, paired with a “passive-rotor” using RE-PMs, slip-induction windings, field windings, or reluctance saliencies that cannot deliver working power but consumes the other half of motor size, loss, and cost in cascade with the active stator, and glued together by a disparate, estimation-dependent, high harmonic content, compensatory field-oriented control (FOC) derivative, enable by prevailing electronic technologies—performance-to-price distinction relies on unfairly exploiting the design specification or re-engineering the empirical selection of legacy packaging techniques without allowing the same opportunity to contestants—physics dictates similar nominal performance-to-price results if packaging and design specifications are equally applied.

• The EMS of today is built from essential but separately distinct components—electric motor, electronic controller, and if needed, high maintenance and lossy gearbox—all from different technical disciplines without shared understanding—often from different manufacturing sources with so-called “integration” amounting to little more than adjacent placement. Depending on which component is referenced, the compounded losses, costs, and size of these essential components are often overlooked in the real-world “system of systems” performance—leaving EMS customers misled and frustrated. Note: The gearbox reduces the amount of costly rare-earth permanent magnets (RE-PM) by enabling a smaller, higher speed motor to achieve reasonable application torque.

• Our patented SYNCHRO-SYM™ establishes the commercially realizable form of the optimal symmetric electric motor-generator system circuit and control architecture (S-EMS): a brushless, dual-active power-conversion system in which both stator and rotor actively participate in electromechanical energy conversion. This architecture is enabled exclusively through our patented, integrally unified, solid-state, brushless, sensorless, pure-sinusoidal Real-Time Emulation Control (BRTEC), made practical by the performance advancements of modern power electronics and computational control. When evaluated at equivalent voltage, frequency, torque, and packaging constraints, electromagnetic symmetry yields approximately 2× nominal performance-to-price and up to 8× peak torque capability relative to contemporary passive-rotor asymmetric systems (A-EMS).

• Our patented SYNCHRO‑SYM is an integrally unified circuit and control system—never sold separately—always factoring the added losses, costs, and size of every system part for real world performance, including BRTEC.

• Our patented Brushless Real Time Emulation Control (BRTEC™)—compact solid-state, quantum level stabilization with inherent symmetrically soft switch, pure sinusoidal, direct AC-to-AC power conversion at half the current rating; no bulky, costly DC link stage—inherently providing full rotor and stator metrics in real-time for superior operation and integrally unified into the frame for another level of EMS power-density. Highly adaptable, BRTEC conveniently enables an ultra-high-performance, symmetrically bi-directional, multiphase, isolated electric vehicle (EV) micro-distribution bus and battery recharger—doubling the performance-to-price advantage of WBG semiconductors.

• As the foundational theoretical framework for electric machine systems, the S-EMS architecture is not new; rather, it fundamentally defines the governing electromagnetic relationships, circuit and control structures, packaging constraints, and thermal limits of the electromechanical energy-conversion process. Asymmetric electric machine systems can be understood as practical, de-optimized derivatives of this symmetric framework, in which actively controlled rotor excitation symmetry is replaced by passive-rotor asymmetry enabled by less stringent field-oriented estimation and control—methods consistent with the electronic control capabilities available during their commercial development. Accordingly, over a half-century of classical laboratory research already validated 2× to 8× performance-to-price and torque of any A-EMS package retrofitted with the S-EMS circuit and control technology (e.g., active rotor + BRTEC)—reducing losses, constraining core saturation, eliminating the need for rare-earth magnets, slashing strategic materials, such as copper or aluminum, per kW, and realistically enabling maintenance-free, tunable, gearless electromagnetic transmission & electromagnetic braking.
  
  Note: Never realizing the practical BRTEC invention (until SYNCHRO‑SYM™) to brushlessly propagate speed-synchronized multiphase power to the rotor—constrained by the limitations of prevailing control technologies—the higher performing S-EMS was sidelined by the timely invention of the high-energy product RE-PM (circa 1980) for a practical RE-PM A-EMS with unforeseen environmental, unsustainable, and geopolitical consequences of its widespread adoption. Despite SYNCHRO-SYM™ already demonstrating a practical S-EMS, the industry remains blind to its existence, because SYNCHRO-SYM™ is repeatedly mistaken for familiar A-EMS variants with legacy packaging techniques and geometries: wound-rotor doubly-fed “induction” machines with passive multiphase rotor windings, brushless doubly-fed designs with unlike pole-pairs, or so-called ‘symmetric’ A-EMS (e.g., DeepDrive) that rely on nothing more than legacy, geometric dual-rotor or dual-stator symmetry with the expanded package size, loss, and cost of two highly integrated motors.

• SYNCHRO‑SYM is a drop-in replacement to today’s A-EMS—including any in-wheel EMS—but uniquely with more power, more torque, more efficiency, and no rare-earth permanent magnets.

• SYNCHRO-SYM™ conforms to the evolving EV and aerospace packaging frameworks developed for today’s A-EMS—frameworks that have largely defined the performance ceiling of conventional architectures—eliminating mechanical re-engineering while delivering a step change in performance through its active-rotor symmetric electromagnetic architecture.

• SYNCHRO‑SYM is a no-brainer upgrade to today’s advanced, externally excited field-wound synchronous A-EMS—providing the same RE-PM-free benefits but with far superior performance.

• SYNCHRO-SYM provides superior performance in rare-earth-free, low-speed, high-power direct-drive applications—operating regimes historically constrained to rare-earth permanent-magnet machines due to the torque-density, efficiency, and core saturation limitations of conventional passive-rotor alternatives.

• SYNCHRO‑SYM is the realistic software-defined EMS, as only possible with the symmetry of an integral active rotor electric motor-generator circuit and integrally-unified control technology—the so-called software-defined EMS of others is built with the deoptimized asymmetry of separate, adjacently mounted, passive rotor circuit and externally mounted control components.

• SYNCHRO‑SYM will be the future’s EMS of choice—even enabling the practical reality of superconductor packaging techniques that establish air-gap flux density beyond the supporting limits of core material.

• MOTORPRINTER enables just-in-time customization – Allows rapid, just-in-time adaptation to specific customer needs.

• MOTORPRINTER enables proprietary SYNCHRO-SYM™ direct cooling with unmatched thermal management for superior performance.

• MOTORPRINTER enables system advantages – Delivers higher reliability, significantly lower cost, greater power density, and higher specific power compared to conventional methods.

• MOTORPRINTER enables advanced materials integration – Enables practical use of exotic, high-performance core materials for high and low frequency machines, such as thin amorphous or nano-crystalline ribbon, previously impractical in motor manufacturing, while eliminating the price premium typically associated with complex axial-flux electromechanical structures.

• MOTORPRINTER enables rapid deployment and distributed domestic production scaling through modular replication of its compact, process-ready, containerized, automated additive-manufacturing platform.

• SYNCHRO‑SYM™ represents one of the single biggest opportunities to accelerate our clean, efficient, and sustainable energy future—Both the battery and the EMS account for 30–40% of the EV’s total cost-of-goods with an equally significant impact on performance, price, and sustainability. With 85% of EVs still relying on rare-earth permanent magnets (RE-PMs) EMS, switching to SYNCHRO-SYM™ delivers a step-change-improvement in efficiency, power density, and cost.

• SYNCHRO‑SYM™ offers significantly higher-performance and an ethically sound alternative to the RE-PM-based A-EMS—anecdotally regarded by practitioners as the best EMS but unethically monopolized by geopolitical adversaries causing alarming environmental, labor, supply chain, and geopolitical risks. By eliminating the RE-PM array from the EMS with a better performing solution, SYNCHRO‑SYM™ redirects a majority of these scarce materials to other strategic applications and mitigates the sustainability of global mineable reserves.

• SYNCHRO‑SYM™ delivers the industry’s lowest-carbon-footprint EMS—uniting magnet-free SYNCHRO-SYM™’s unmatched efficiency, power density, and lowest cost with MOTORPRINTER™’s additive manufacturing.

• Transformed the foundational study and pinnacle of electric motor-generator technology into practical reality with invention, research, development, and radial-flux SYNCHRO‑SYM™ prototypes for S-EMS validation—the active-rotor S-EMS delivers 2× to 8× the performance-to-price and torque of any passive-rotor A-EMS package according to over a half-century of classical laboratory research.
• Engineered a validated, scalable working design template for retrofitting the radial-flux product line of a major industrial motor division, ultimately leading to a $4M contract negotiation.
• Speaking engagements and authored articles with NREL and IEEE—all providing peer-review validation.
• Orchestrated empirical MOTORPRINTER validation studies with fiber laser and amorphous metal companies.
• Patented a portfolio of technologies covering S-EMS architecture and 3D Printing—vetted, peer review validation.
• Developed Axial-Flux SYNCHRO‑SYM™ CAD Tools (i.e., BEM-CAD™) for programmable MOTORPRINTER™ production of our next-generation axial-flux designs—quick, just-in-time manufacture of any customer power rating request.
• Developed the modular BRTEC design architecture with compact solid-state Magnetic Sharing™, inherent soft switching, pure sinusoidal, and symmetrically bidirectional, direct AC-To-AC power conditioning with a scalable power module—no bulky and inefficient DC Link Stage with high harmonic content excitation—quick BRTEC retrofit to any customer power rating request.
• Developed a convenient means to stack SYNCHRO-SYMs lengthwise for incremental increases in power rating, redundancy, and resiliency as is only possible with integrally self-contained SYNCHRO-SYMs.
• Developed “How Do You Know SYNCHRO-SYM Outperforms the EMS of all others?“—a set of simple, physics-based rules for our customers to equitably compare our competitors’ EMS performance-to-price claims, cutting through the marketing spin—backed-up by BEM-CAD™.

BEM-CAD confirms our “novel” brushless 280 kW (continuous duty) or 560 kW (peak duty/gearless 2675Nm torque) @ 2000 RPM constant-torque-speed-range (CTSR) Axial-Flux SYNCHRO-SYM is the unmatched rival to Koenigsegg’s Quark E-Motor—speeds beyond CTSR enter the constant-power-speed-range (CPSR)—delivering the world’s lowest-cost per unit of power while exceeding both continuous and peak ratings under similar operating conditions, fully aligned with the criteria for equitable EMS cross-comparison.

• Operating Conditions: 400-800V
• CTSR: 2000 RPM
• Peak System Efficiency @ CTSR: 98%
• Cost per kW at peak power: see EMS Early-Access (vs. Koenigsegg: N/A)
• Gearless Continuous Torque: maintenance free, direct-drive 1340 Nm, 990 ft-lb (@CTSR vs. Koenigsegg: 250 Nm, 184 ft-lb @ 4000RPM)
• Gearless Burst Torque (>20 sec safe-operating-area time): maintenance free, direct-drive 2675 Nm, 1973 ft-lb (@ CTSR vs. Koenigsegg: 600 Nm, 443 ft-lb @ 4000RPM)
• Burst Power Density: >83 kW/L (@ CTSR vs. Koenigsegg’s 32 kW/L@ 4000RPM)
• Burst Specific Power: >21 kW/kg (@ CTSR vs. Koenigsegg’s 8.7 kW/kg@ 4000RPM)
• Burst Torque Density: >101 Nm/Kg @ CTSR—with no RE-PM or damage
• Dimension: Diameter: 300mm (11 in.) x Length: 94mm (3.7 in.) x Weight: 27Kg (59 lbs.)

Note: Pricing will be provided upon request.

Note: Constant-torque speed range (CTSR) is the speed range where rated or burst torque can be applied. Operation above CTSR enters the constant-horsepower speed range (CPSR) where rated or burst torque must be linearly reduced with increasing speed. The “motor CTSR” and torque determines the need for additional gearing to met the load CTSR and torque—let BEM design SYNCHRO-SYM to meet your load CTSR without a gearbox.

Note: “Maximum Speed” is often flaunted as a performance metric, but it is really just the upper mechanical limit before dynamic failure, offering little insight into usable performance.

Note: As the only unified, turnkey electric motor-generator circuit and control system, SYNCHRO-SYM’s controller and electric machine components cannot be sold separately—the loss, size, weight, and cost of our integral BRTEC controller are always included in SYNCHRO-SYM performance results.

Note: A meaningful comparison requires EMS contestants to be evaluated at the same CTSR. Only under these equal conditions do true comparisons emerge, such as the EMS peak power density, peak specific power, peak torque, system cost, and peak nominal efficiency at the same safe-operating burst duration (at least 10 seconds with rated active cooling, which is the real-world acceleration window).

Note: Upon customer request, BEM-CAD can reprogram MOTORPRINTER™ just-in-time to build SYNCHRO-SYM™ with unmatched efficiency or power density.

For our customers with a tamer application, BEM-CAD designed our “novel” Brushless 140 kW (continuous duty) or 280 kW (peak duty/gearless 2675Nm torque) @ 1000 RPM CTSR Axial-Flux SYNCHRO-SYM is also an unmatched rival to Koenigsegg’s Quark E-Motor and available for purchase with the world’s lowest-cost per unit of power:

• Operating Conditions: 400-800V
• CTSR: 1000 RPM
• Peak System Efficiency @ CTSR: 97%
• Cost per kW at peak power: see EMS Early-Access
• Gearless Continuous Torque: maintenance free, direct-drive 1340 Nm, 990 ft-lb
• Gearless Burst Torque (>20 sec safe-operating-area time): maintenance free, direct-drive 2675 Nm, 1973 ft-lb @ CTSR
• Burst Power Density: >29 kW/L @ CTSR
• Burst Specific Power: >9 kW/kg @ CTSR
• Burst Torque Density: >86 Nm/Kg @ CTSR
• Dimension: Diameter: 398mm (15.7in.) x Length: 78mm (3 in.) x Weight: 31Kg (69 lbs.)

For our customers with an even tamer application, BEM-CAD designed our “novel” Brushless 72 kW (continuous duty) or 144 kW (peak duty/gearless 2675Nm torque) @ 500 RPM CTSR Axial-Flux SYNCHRO-SYM available with the world’s lowest-cost per unit of power:

• Operating Conditions: 400-800V
• CTSR: 500 RPM
• Peak System Efficiency @ CTSR: 96%
• Cost per kW at peak power: see EMS Early-Access
• Gearless Continuous Torque: maintenance free, direct-drive 1340 Nm, 990 ft-lb
• Gearless Burst Torque (>20 sec safe-operating-area time): maintenance free, direct-drive 2675 Nm, 1973 ft-lb @ CTSR
• Burst Power Density: >23 kW/L @ CTSR
• Burst Specific Power: >9.2 kW/kg @ CTSR
• Burst Torque Density: >88 Nm/Kg @ CTSR
• Dimension: Diameter: 337mm (13.3in.) x Length: 68mm (2.7 in.) x Weight: 16Kg (34 lbs.)

BEST ELECTRIC MACHINE → “PARTNERSHIPS”

We invite visionary customers and early supporters to help us bring this breakthrough technology to market. Whether through informed word-of-mouth among your trusted colleagues or through strategic partnerships, your advocacy can help us reach our goal of 2,000 units—the critical commercialization threshold for our axial-flux SYNCHRO-SYM early access program.

Better Than Alibaba’s Benchmark — At Scale

With our special introductory program—built around fulfilling individual or group orders totaling just 2,000 units—BEM will initiate U.S.-based production of the MOTORPRINTER-produced axial-flux SYNCHRO-SYM. Even in this launch phase, our 560KW/2000RPM SYNCHRO-SYM consistently outperforms and underprices the imported, peak duty 150kW RE-PM A-EMS from Alibaba—the standard for ultra-low cost—while eliminating rare-earth dependence, strengthening domestic manufacturing resilience, and advancing national clean energy and supply chain security goals.

Partner with BEM as a Test & Validation Lead

We’re actively seeking third-party and customer test partners for our axial-flux SYNCHRO-SYM. Be among the first to validate and demonstrate this next-generation electric propulsion system.

As of today, we offer 3 power-levels of axial-flux SYNCHRO-SYM, 560KW, 280KW, and 140KW, all with a gearless, direct-drive torque of more than 2675 Nm. Let us do your electric propulsion design & pricing, if you desire something different.

We’re always open to creative partnership ideas that accelerate our mission!

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