Telecommunications
Military APU
Hybrid Electric Propulsion
Fast Battery Charger
Hybrid Photovoltaic Solar
Uninterruptible Power Systems
Hydroelectric
Wind Energy
Advantages
High reliability and limited maintenance
High degree of corrosion resistance
No mechanical adjustments
Very light weight
High quality electrical output
Stiff voltage regulation to current demand
Up to 94% efficiency
-40° to 70° C operational range
Design Performance
Available in voltages of 12 to 500 Vdc
32 pole high frequency design provides low electrical ripple
Higher frequency design provides compact and lightweight performance
Direct engine mounting further enhances the compact and lightweight design
Conventional 3 phase stator lowers assembly cost
NdFeB Magnets for high efficiency
Class 220 C magnetic wire for long and service life
Anodized type III process for aluminum parts
Nickel plating for steel parts
Stator is varnished
Low Maintenance and High Reliability
Our unique alternator design with its large diameter and 32 poles allows you to run your engine at lower speed with lighter weight, higher efficiency, and longer engine life.
Each Polar Power stator lamination stack is fully bonded to create a stator without voids which prevents moisture penetration, corrosion, and swelling. After the copper winding is in place, the entire stator assembly is varnished submersed in a class H coating then baked. This seals the metal surfaces from corrosion and improves thermal performance. This also increases resistance to salt fog. The coatings also protect the stator windings from particle abrasion and vibration.
The steel magnet ring is 100% Nickel plated. The magnets are then bonded to the inside of the ring with high temperature aerospace grade epoxy. The purpose of Nickel plating the ring is to provide the surface with high degree of corrosion resistance, thereby preventing corrosion from starting in one area, migrating under the magnets, and creating a bond failure. The assembled magnet ring is then epoxy coated to further seal the surfaces and provide a higher degree of salt fog corrosion resistance.
The magnets are mounted on the inside of the ring, so there are no centrifugal forces pulling against the epoxy bonds.
There are no electronic parts (diodes, etc.) or electrical connections inside the alternator. There is nothing to short or vibrate loose inside the alternator.
The alternator is almost impossible to damage electrically. The outputs can be shorted for minutes without damage.
The alternator’s rotor is mated to the engine’s flywheel, and this mated pair is dynamically balanced to improve the engine’s bearing life.
Polar Power’s PM alternator should have an MTBF exceeding 100,000 hours, as there are no parts which rub, wear, or overheat under normal operating conditions.
Note:
Polar Power designs and manufactures its own alternators; we sell complete generators and not alternator kits.
Because our alternators and controls are designed to fit directly on specific engines and engine models of specific build configurations we are unable to sell and support alternator kits. Under certain programs involving quantity we will consider selling alternators kits under a franchise contract.
