DC Alternator

DC Alternator

There are a lot of types of DC alternators. Before we get into explaining the basics and advantages of different types, let’s introduce our company – Innotec Power. We manufacture the DC alternator, permanent magnet alternators, and brushless DC motors. We offer a wide range of “off the shelf” units and also offer customized solutions to match your exact requirements. We try to work with OEMs to find the best solution and build them in the right product for the right price. We focus on building relationships with our customers for the long term.

Basics of DC Alternators

Traditional DC alternators use brushes to produce a DC output. Brushed motors and alternators are quickly being eliminated. Brushes have disadvantages that have led to their declining use in alternators. One big disadvantage is that brushes wear out over time and need to be replaced, which can be a maintenance-intensive process. Brushes can also generate electrical noise, which can interfere with the operation of the alternator or the devices it is powering.

To improve reliability and efficiency of the alternator and reduce maintenance requirements, modern DC alternators use solid-state electronics as a replacement. There are a lot of differences in solid state electronics and the basic alternator design.

These electronics typically consist of a set of electronic switches, such as transistors or thyristors, which are controlled by a microprocessor or other control system. It’s important to consider the different electronics used when analyzing the complete efficiency. 

Innotec Power – Custom Permanent Magnet Alternators 

Innotec Power manufactures 3 phase permanent magnet alternators as DC alternators. These use an internally or externally attached rectifier (controlled or passive) to give DC voltage. 

DC Alternator Controller

For controlled DC voltage output, for example a controlled 48 volt alternator, we have our proprietary control mechanisms that are more efficient than field controlled units. We use switching controls based on in-house developed algorithms to give a constant voltage output regardless of changes to load. 

Typical with permanent magnet alternators, the voltage output will fluctuate with changes in loading conditions and rpm. If we can control the rpm, then it is possible to fluctuate the rpm to get a regulated output if there is a high precision degree of controlling speed to accommodate changes in the current loading. If not, then we must electronically control the output voltage. 

With our DC Supermax controller, we accomplish this with out regulating the field of the DC alternator. For example with our DC generator heads, if we want to get a constant 76 Volt output – we can set the Supermax Controller for the same and it will produce a regulated output. 

To explore, contact us to discuss your DC alternator requirements. 

Also check out Innotec’s BLDC motors and see what custom motor options that we have available.