Basics of Regenerative Braking and Regenerative Acceleration
Know about the technology that claims to reverse the Regenerative Braking paradigm and recharges the battery pack while it accelerates the vehicle
Technology deployment plans for India
In any discussion about electric vehicles and their efficiency, we can find a mention of Regenerative Braking that essentially utilities the vehicle’s kinetic energy to help recharge the car battery pack and as a result, adds to the vehicle’s range. The battery recharging process causes the EV to decelerate.
In this article, we are going to talk about Regenerative Acceleration – a concept that appears counter-intuitive but means exactly what it sounds like i.e. recharging the vehicle’s battery but causing the vehicle to accelerate instead.
EVreporter caught up with Thane Heins, CEO of Potential Difference Inc. – the company that holds 3 US patents for the technology and is now initiating global licensing of the IP to OEMs.
Let’s start with regenerative braking before we move on to regenerative acceleration. Regenerative braking is the result of Generator Armature Reaction otherwise known as Motor Acton in a Generator. Regenerative Braking is governed by a law of physics called Lenz’s Law.
When driver hits the brakes, the generator delivers power to the EV battery. The generator’s load current (electric current) flowing through its coils induces an electromagnetic field around the coils. This electromagnetic field produces a counter-electromagnetic-torque on the generator’s rotor which ultimately causes the EV to decelerate. This tendency to oppose the prime mover is called MOTOR ACTION in a GENERATOR (or, Generator Armature Reaction), that slows the car down while recharging the vehicle’s battery.
In essence, in case of regenerative braking, the electrical energy (which is stored in the battery) produces a resistive electromagnetic force which decelerates the vehicle. The more energy sent to the EV’s batteries, the faster the rate of EV deceleration.
Regenerative Acceleration (ReGenX)
Thane Heins informed us that Motor Action in a Generator or EV regenerative braking can now successfully be reversed by introducing a Load Current Delay into the generator coils’ performance. This is the essence of the 3 US patents which took 20 years to develop and 6 years to get US patent rights granted.
“When the load current induced in the generator coil is delayed sufficiently in the time domain, it will also delay the production of the induced magnetic field and will reverse its resistive electromagnetic effects and produce assistive electromagnetic effects. Electric vehicles can now be accelerated rather than decelerated while recharging their batteries.”, says Thane.
The ReGenX Generator introduces a Load Current Delay into generator coil operation that changes the counter-electromagnetic-torque production to a complementary-electromagnetic-torque production, reversing the electric vehicle regenerative braking paradigm. As a result, the electrical energy which is generated contributes to the vehicle acceleration process rather than the de-acceleration process.
Lenz’s Law can be circumvented when a Load Current delay is introduced.Thane Heins
“Millions of EVs on the roads can be retrofitted to include Regenerative Acceleration. In pure electric vehicles, the ReGenX Motor can be integrated directly into the drivetrain as an additional traction motor and generator. The ReGenX technology will eventually be an OEM product and can replace the regular traction motor of an EV completely.”, adds Thane.
Benefits of Regenerative Acceleration
– Better vehicle range for the same battery size. The more an EV’s batteries are recharged, the more the EV is accelerated, and the more its range will increase.
– Reduced dependency on charging infrastructure
– Higher Efficiency – Regenerative braking cannot provide more than a 15% energy recuperation whereas Regenerative Acceleration can deliver more than 100% of energy* if a suitably sized unit is employed because the only consequence of battery recharging is vehicle acceleration and there is no negative downside as there is with regenerative braking, according to Thane.
– Benefits of both regenerative braking and acceleration – In their roadworthy Regenerative Acceleration equipped prototype electric vehicle, the ReGenX motor/generator performs Regenerative Acceleration above 30 km/hr and regenerative braking below 30 km/hr.
Areas of Application
Key application areas of the technology are in transportation as well as electric power generation.
“Advantages for the transportation industry are electric vehicles which can recharge themselves as they drive with vehicle acceleration. Advantages for the electric power generation industry are electric generators which require 80% less mechanical input power per Watt of electric power generated because Generator Armature Reaction is now removed from the electricity generating equation.”, Thane concludes.
EV Regenerative Acceleration Deployment in India in 2020
Potential Difference has a signed MOU with Aligarh Muslim University (AMU) in order to file patents in India and establish an India EV start-up company in 2020. Once all the India patents have been filed, introductions to India EV manufacturers will begin.
This collaborative initiative in India is being spearheaded by Dr. Mohamed Alam of AMU who states that, “with the advent of IoT, Machine learning and AI, the world is going through 4th Industrial revolution and I have full faith that our team can turn the wheel around.”
Dr. Alam and Thane Heins also have plans to co-write an article to be published in the IEEE publication in 2020 which will detail all of the scientific ramifications regarding the Regenerative Acceleration innovation including introducing the world to a a brand new law of physics.
To learn more about other EV concepts, visit EV Basics and Learning section.
* An early integration into a Hero Electric scooter in 2013 returned 56% of the scooter motor’s energy consumption back to the batteries. Based on the thousands of hours of testing over the years, it is fully expected that Regenerative Acceleration will be able to deliver more than 100% of energy if a suitably sized unit is employed.