Generators, PV Electronics, EV with PV
Consider DC flywheel battery UPS (Uninterruptible Power Supply); ultra-efficient regenerative brushless DC motors; broad-speed-range DC generators; PV (photo-voltaic) solar power with maximizer electronics; and EV (Electric Vehicle) with motor-wheels, a pedal power generator and onboard PV. They are technologies that can enable great energy options not now commercially available:
Each has high-frequency pulse-width-modulated power electronics and advanced magnetics. They also have great synergy with each other, and with on-site solar and wind power.
Links near bottom of this page describe, illustrate, and analyze them.
They show architectural designs with integral solar/wind/UPS power installations to maximize on-site solar and wind power yield and enable low-cost electric power from wind at locations where ambient wind is relatively low (where existing wind turbines on towers can't generate power). These new technologies would provide clean on-site building-integral electric power, at lower cost than polluting and hazardous (coal, gas, nuclear) power plants.
They also show and analyze EVs with onboard batteries, solar and pedal power. With so great and far lower cost non-polluting convenient personal road transit they could provide, you'll wonder why we don't yet have them. That's also explained here.
Although all prototype tests prove these new technologies perform as described, no manufactured products from these new technologies are available:
Big corporations, subsidized by taxpayers, have $100 Billions in past investment for tooling to manufacture existing products. Their managers favor short-term profit over long-term achievement. So they are reluctant to invest in new tooling needed to manufacture the products the new technologies can enable. They view competitive new technology as a threat to their existing business. Their political influence obstructs technology shown here. Their subsidies and bailouts fund business-as-usual -- not practical new technology. Consequences include: delay of practical new options, delay of new enterprises and jobs to produce new options, economic stagnation, continued environmental damage.
Your awareness of common business practices, with self-serving motivations by their top executives, can help change a corrupt status quo. A clear perspective of practical new technologies will hopefully inspire your discussion, and help you judge business-as-usual media ads.
RPM developed a flywheel power storage and regeneration system that can store 10 kwh energy while it incurs 50 watts idling loss, has ultra-efficient power transfers (motor ~99% and its power electronics ~95%) and ultra-high reliability. We helped a student and faculty team at University of California, Berkeley, who built a prototype that demonstrated this. It will not need maintenance over its entire (over 20-year warranty) life. So its flywheel can be installed in a safe site, where it won't need servicing like others. Its electronics can be accessed directly and remotely, for setting control options and status monitoring. Its power electronics, magnetically levitated integral rotor, and advanced manufacturing processes, can facilitate safe dependable on-site power. It can enable dependable power on demand and greater energy yields, from clean, non-polluting, zero-maintenance, on-site solar/wind power. Building-integral solar/wind power, with on-site power storage/regeneration, can provide most future global power needs, for reliable, high-quality, on-site electricity.
Magnetic bearing and lower-cost magnetic plus ball bearing version prototypes have been constructed and tested. They are described in US Patents 6566775 and 6794777 and 8242649 plus pending patents.
Left: Vertical spin axis version, mainly for vertical axis wind turbines.
Its shaft can support the turbine that drives it, which prevents mechanical cogging, with no need for flexible coupling and critical shaft alignment.
These DC generators include integral switch-mode boost regulation electronics. Unlike conventional generators, their coreless assemblies have zero magnetic cogging torque.
So a version intended for coupling to wind turbines is capable of generating power over a very broad wind-speed range, with up to 100x the energy yields of conventional generators that produce useful power only in a very limited speed range !!
Left: Horizontal spin axis version, mainly for axial-vane wind turbines.
Another version of this horizontal axis generator can add pedal power to EVs with onboard PV and batteries. It would enable driving with no sunlight, and extend range at higher speed, by recumbent cycling while driving the EV.
These generators are tested, proven and successfully demonstrated technology, described in US Patent 7646178 and published application US20120256422A1 plus patents pending.
New integral generator and turbine would circumvent prevalent, very troublesome and crucial shaft alignment and coupling problems, between conventional generators and wind turbines. Those problems include: high friction torque and power losses, ball bearing damage and catastrophic failure, high installation costs.
Ultra-efficient Regenerative Brushless DC Motors:
RPM developed one of the first ultra-efficient regenerative brushless DC motors, described in US Patents 4085355 and 4520300. Prototype motors are tested, proven and have been very successfully demonstrated to customers.
Left: prototype motor built 30 years ago, in a portable stand, connected by 4 signal leads and 4 power leads to power interface electronics.
A speed and regenerative brake control box is shown in front of the motor.
The electronics power interface is shown in between a 48vdc battery pack and the motor. Signal leads from the control box are shown connected to the electronics.
The electronics includes battery charging.
Its 2 meters display battery current and voltage.
It's shown connected to a standard wall outlet.
Left: motor parts before assembly.
Advantages include zero magnetic cogging and no magnetic cycling in its rotor iron, magnets, or surrounding conductive materials (so zero core loss).
Another version of this motor, having a rotatable rotor body with ball bearings connected to a non-rotating tubular shaft that supports it and provides a conduit for its 8 conductors to onboard power electronics, would enable a unique EV motor-wheel, briefly described below and more fully described and analyzed in its link below.
PV with Boost-regulated Power Electronics:
Boost-regulated DC power electronics can maximize power yield to all DC power storage devices (e.g., chemical or flywheel batteries), from relatively low voltage PV solar panels, connected mainly in parallel. This power electronics also prevents over-voltage to chemical batteries that are fully charged and flywheel batteries that reach their speed limit.
Solar panel parallel connection circumvents power loss prevalent in series connected panels, when sunlight to a single panel is blocked, preventing current flow in all solar panels connected in series with the blocked panel.
Ultra-light Low-cost EV with Onboard PV and Pedal-power Generator:
Onboard PV, motor-wheels, low-weight materials, pedal-powered generator, and batteries that are not deep-discharged, are key enablers of this EV. Battery discharge can be negligible while driving, maintained by solar and pedal power plus regenerative braking; recharged when the EV is parked or driven in sunlight, or by plugging into a standard garage power outlet for over-night charging, with no need for public charging stations. Definitely no fuel stops !
An image of this EV is shown below.
Driver and passenger would normally sit in a reclining position, to accommodate a low EV height for minimum aero drag, and to enable maximum pedal power from recumbent cycling.
Its 2 rear motor-wheels provide ultra-efficient power conversion, between its onboard PV, batteries, and pedal-power generator; responsive to driver controls on its steering wheel that include 2-motor torque (thrust)/speed/cruise control and regenerative braking/deceleration.
Unlike fuel-burning autos, it has no gas, water, oil and fluid tanks, nor radiator. Nor pumps needed for them. Definitely no incendiary explosive fuel.
It has no gears or transmission, nor differential gears. Nor drive train universal joints. So it does not incur their power loss, nor need lubricant, nor their maintenance.
An "electronic differential" for its 2 rear motor-wheels costs nothing and does not incur power loss. Entry to the EV could be thru glide-back doors.
Left: This EV's motor-wheel.
Each of 2 rear-drive motor-wheels has a non-rotating tubular shaft, with 4 power conductors and 4 signal conductors from its stator disks in it that connect to motor control power electronics.
The outer diameter of its rotor disks is connected by springs to its large diameter, narrow, light-weight wheel rim and tire (so very low unsprung mass of only the narrow rim and tire); the light-weight large-diameter resulting in very low rolling friction.
Future buildings and road travel could resemble images below.
For more about these new technologies,
how they can improve life for all with non-polluting, sustainable electric power, far better
than what is now available -- and much more -- visit the links below:
|RPM Flywheel Battery|
|Comparison: RPM Flywheel Battery vs. others|
|Building-integral solar/wind power|
|Flywheel power storage basic physics|
|Dual-mode EV and Electric Highways|
|EV with onboard charger, batteries, PV, motor-wheels, pedal power|
|Flywheel Facts and Fallacies|
|Future electric power options for buildings and road travel|
|UPS & Inertial Attitude Control for LEO Satellites: Orbit Dynamics|
|Broad-speed-range Generator and Wind Power|
|Bleak future of business-as-usual coal, oil, and nuclear policies|
|Technology: Public and Business Policy|
If you have questions, comments or suggestions, please email