site performance . no personal information is collected . research and development powertrain research and development frazer nash research has been developing its innovative range extended electric ree powertrain for over two decades . the range extended electric powertrain fn unify explore the range extended electric powertrain powertrain cross section is based on the metrocab taxi currently in service in london . other powertrain configurations are possible . key powertrain components all elements of the electric powertrain from the traction systems to the energy management systems have been designed and engineered in house . electric motors fn electric motors combine proprietary control technology with advanced permanent magnet motor design to achieve an efficiency of over 96 % . class leading small in size lightweight highly reliable and water cooled these motors are a key element in contributing to the high efficiency of the powertrain . controllers the digital power controllers provide power and safety management optimisation and control functions for the electric motors . the controllers purpose designed hardware and fn proprietary software accurately balance the power and torque between the independent motors . range extender the range extender is an internal combustion engine coupled to a matched generator and controlled as an auxiliary power unit . the electricity generated charges the battery pack . alternatively this energy is diverted to directly power the motors thus minimising charge discharge losses in the battery . the generator is set to run at one load point that represents the sweet spot of the engine . this is the speed at which the engine operates at maximum efficiency and minimum fuel use . the engine does not drive the wheels in any way . battery pack the battery pack contains a number of large format lithium ion battery cells . the pack has been designed to accept high charge in a short period of time maximising the benefit from regenerative braking fast chargers and the on board range extender . the battery packs and sizes suit individual vehicle types to ensure safety integrity and optimum road handling.eas part of the kamkorp group of companies focuses on the development of lithium ion cells . battery management system the frazer nash battery management system is one of the most advanced systems of its kind for maximum life and performance of the battery pack . it is designed to monitor and manage each individual cell of the battery pack as well as interface with other systems which require information on the state of charge and on individual battery cell data . dc dc converter designed in house the compact and highly efficient dc dc converter steps down the high voltage of the battery pack to the lower voltage required to power the majority of the ancillary systems on the vehicle such as lighting communications and door controls 12v to 24v . portable evse portable electric vehicle supply equipment evse is also available for home charging from a domestic mains socket . this contains the necessary safety isolation and detection circuitry together with industry standard vehicle connectors to ensure compatibility with charging stations and other roadside charge points . data acquisition and remote telemetry system darts an fn unify system darts allows real time remote monitoring of vehicle systems providing performance technical data and geographical positioning of a vehicle . darts uses a built in cell phone module to transmit data packets to a secured server . the data is compressed resulting in very little data cost per year . this database can store data for millions of vehicles for decades . as the transfer of data is uni directional it prevents any external access and breaches of security . the data or information sent can be tailored to specific users or interest groups . colour multifunction display cmfd an fn unify system the colour multifunction display cmfd is a flexible and interactive infotainment system which incorporates state of the art display and control functionalities in a digital format . android based the cmfd can take full advantage of all the apps within the google play store as well as full smart phone integration with applications such as mirrorlink . the cmfd also enables users to monitor and control systems in their vehicle . the powertrain frazer nash research has developed a range extended electric ree powertrain scalable for a wide range of vehicles from passenger cars and buses to mass transit monorails . vehicles with the fn ree powertrain are electric vehicles evs with an internal combustion engine range extender powering a matched generator working as an auxiliary power unit which charges the battery pack and or provides energy directly to the electric motors . digital differential the fn digital differential replaces the mechanical differential and eliminates all of the typical mechanical losses associated with conventional internal combustion drive trains and simple series or parallel hybrids . it provides better motor control traction and performance . the use of multiple motors and digital differential is unique to fn . the range extender the range extender allows for an easy and efficient way to recharge the batteries charging can also be achieved by plugging in to any mains outlet . this configuration provides considerable fuel savings and allows for seamless integration with alternative auxiliary power units and or fuel types such as hydrogen or fuel cells ensuring its vehicles are future proof . fn unify integrated into the heart of all of frazer nash s intelligent components is fn unify.fn unify allows for unique connectivity and integration across a spectrum of devices and platforms bringing data acquisition systems control systems and the computing toolbox under one unified interface.frazer nash utilises a cross platform software engine to enable a host of different systems from the dab radio to the traction subsystems to communicate with each other in a unique and safe manner . this technology is fully scalable and able to work with any can device on any display in any vehicle.all the data from this system can also be transmitted remotely from the vehicle to a control centre allowing for thorough analysis on a wide range of metrics . the system is then able to feedback valuable information and advice to the driver or fleet operator . the system is fully secure utilising a proprietary means of security unseen in the automotive landscape . range extender & generator the range extender is a small petrol 1.0 l 1.5 l internal combustion engine coupled with a generator which is used to recharge the battery pack or provide power directly to the motors . the range extender engine does not drive the vehicle in any way . charging can also be achieved from any mains outlet or electric vehicle charging station . battery pack the energy generated from the range extender and the mains plug in charger is stored in the battery pack . this energy is used to power the electric motors motors & controllers all fn range extended electric vehicles are driven by multiple electric brushless motors . in this case the metrocab is driven by two electric motors in the rear . solar energy & smart grid research and development frazer nash in association with other group companies carries out research development and production of energy capture and generation systems . using a combination of the latest microelectronics photovoltaic panels and lithium ion battery technologies frazer nash has commercialised a variety of environmentally friendly energy generation and storage solutions . solar concentrator frazer nash s concentrated photovoltaic panels cpv take the sun s energy and concentrates it via an array of fresnel lenses resulting in a significant reduction of the amount of silicon required compared to a traditional flat plate solar panel . this allows the unit to be extremely lightweight but robust . play solar charging station the solar charging station is the result of decades of research into energy capture and storage solutions . the product utilises both cpv and pv technologies and allows the charge of electric and range extended electric vehicles . the first station currently installed in surrey united kingdom provides 80 000 free kilometres per year generating over 12 mwh per annum . annual solar charging station savings free kilometres generated per bay per year two axis tracker the frazer nash cpv system uses digital 2 axis control loop tracking through solar position algorithms allowing the system to align with the sun and thus maximising output from any latitude . concentrator module the concentrator module is a self cooling sealed unit . each unit consists of 24 concentrator modules each containing 12 connected monocrystalline silicon cells with individual diode protection . the module concentrates the suns energy via an array of fresnel lenses . the output voltage per standard array is typically 72 v but can be tailored for specific applications . frame & mounting system the rigid lightweight aluminium frame comes fully assembled . the mounting system is suitable for both roof top and field applications with trouble free ground mounting requiring zero preparation before installation . the system is easily de mountable for relocation if necessary . capabilities frazer nash research has a wealth of knowledge in energy efficient systems and a host of in house capabilities . it provides technical and engineering solutions to its clients and other group organisations . mechanical design & packaging electrical & electronic design simulation software development virtual reality vr microeletronics safety validation & testing mechanical design & packaging mechanical components and sub systems are designed in house using industry standard suites such as catia and solidworks to complement the electrical and electronic sub systems . thermal modelling and cfd computerised fluid dynamics are an essential part of system design to ensure that an effective compact lightweight cooling system is produced . electrical & electronic design simulation the design of the electronic circuitry within the frazer nash powertrain and ancillaries from schematic through to printed circuit board pcb layout is carried out in house . frazer nash s electronics team continually work to innovate pcb designs that have an improved thermal performance reduced wiring length and increased robustness and versatility . software development software development is core to frazer nash s r & d ethos . frazer nash s digital differential replaces a conventional inefficient mechanical differential in its range extended electric ree powertrain . this program has been conceived coded and developed by the frazer nash software team over the past 25 years . virtual reality vr virtual reality has proven to be an extremely useful tool when designing and packaging components . vr allows engineers to simulate and engage with components and products from a micro to macro level . a specialised software team develops vr programs in house for a range of applications e.g. training remote product diagnoses and repairs . microelectronics frazer nash has extensive resources to design and produce its own application specific integrated circuit asic chips . these have been used to increase system reliability in the fn powertrain for over 25 years . in addition these designs enable a reduction in the size and weight of components enhanced security and storage for core intellectual property and lower power consumption . safety validation & testing safety and testing is priority in the development of new frazer nash products and technologies . engineers work to the toughest worldwide standards including iso 26262 to which all new electrical and electronic systems must conform . teams within frazer nash also ensure compliance to safety guidelines such as misra motor industry software reliability association to assure end users and auditors that best practice methods are adopted . history in the early 20th century archibald frazer nash founded frazer nash ltd and partnered with henry ronald godfrey a college friend to produce the gn cycle car . in 1923 frazer nash started the frazer nash company to produce an evolution of the gn still chain driven which became the frazer nash sports car . in 1929 frazer nash started a separate