At Innotec Power, we specialise in designing and manufacturing DC alternators that deliver reliable, efficient, and consistent power for a wide range of applications. Whether you need power for a hybrid vehicle, agricultural equipment, marine systems, or renewable energy projects, our permanent magnet technology ensures high performance with minimal maintenance.
Our product range includes:
Low-speed DC alternators – Ideal for direct coupling to turbines, PTO shafts, and slow-turning machinery.
High-speed engine-mounted DC alternators – Perfect for vehicles, hybrid systems, and mobile power solutions.
PTO and shaft-driven DC alternators – Designed for agricultural, construction, and portable power generation.
By using 3-phase permanent magnet alternators with integrated or external rectifiers, we can provide either steady or variable DC output, depending on your needs. For applications requiring constant voltage—such as 48V, 72V, or custom outputs—we also offer advanced electronic controllers to maintain efficiency under varying loads.
What is a DC Alternator?
A DC alternator is a device that converts mechanical energy into direct current electricity. In older designs, this was achieved using brushes and commutators, which physically converted AC output into DC.
However, traditional brushed designs come with significant drawbacks:
Brush wear and maintenance – Brushes eventually wear out, leading to downtime and replacement costs.
Electrical noise – Brush contact can introduce interference into sensitive electronics.
Lower efficiency – The mechanical conversion process wastes energy.
To overcome these issues, modern DC alternators, such as those made by Innotec Power, use permanent magnet alternator (PMA) technology combined with solid-state rectification. This eliminates brushes, reduces maintenance, increases efficiency, and delivers cleaner, more stable power.
Permanent Magnet DC Alternators by Innotec Power
Our 3-phase permanent magnet alternators form the core of our DC alternator product line. Instead of using a wound field that needs electrical excitation, we use high-grade permanent magnets to create the magnetic field.
The output is then processed in one of two ways:
Passive rectifiers – Ideal when voltage variation with RPM is acceptable.
Controlled rectifiers & proprietary controllers – For regulated, constant DC voltage in demanding applications.
Because permanent magnet alternators don’t require field excitation power, they are naturally smaller, lighter, and more efficient than traditional field-excited units.
DC Alternator Controllers – Stable Output Without Field Control
One of the main challenges with PM alternators is that voltage can vary with speed and load. In some cases, this variation is fine, but in many industries, stable voltage is essential.
To solve this, Innotec Power developed the DC Supermax Controller, designed specifically for our permanent magnet alternators. It ensures:
Constant voltage output regardless of changes in RPM or load.
No need for mechanical speed control, simplifying the system.
High efficiency since it does not regulate the alternator’s magnetic field directly.
Example: If you require a constant 76V DC output, the Supermax Controller can maintain it even as load demand changes—without affecting performance.
Frameless DC Alternator Options for OEMs
In addition to our standard designs, we offer frameless DC alternators—providing just the rotor and stator. This gives OEMs the freedom to integrate them directly into their machinery, offering benefits such as:
Reduced size and footprint by eliminating an external housing.
Lower weight, which is crucial for mobile and aerospace applications.
Custom mounting and cooling solutions for unique operating conditions.
Frameless units are perfect for engine-integrated alternators, hybrid drive units, and compact generators where every millimeter counts.
Applications of Innotec Power DC Alternators
Our permanent magnet DC alternators serve a wide range of industries, including:
Hybrid & Electric Vehicles – Engine-mounted alternators for battery charging in automotive and transport systems.
Agriculture – PTO-driven alternators powering pumps, lighting, and agricultural tools in the field.
Renewable Energy – Low-speed alternators for wind turbines, hydro projects, and mechanical energy recovery.
Marine Power – Compact alternators for on-board DC systems, navigation equipment, and lighting.
Industrial Equipment – Auxiliary power sources for cranes, lifts, and off-grid operations.
Why Choose Innotec Power?
When it comes to DC alternator solutions, our customers trust us for:
Wide product range – From low-speed to high-speed and PTO/shaft-driven designs.
Proprietary control systems – Stable DC voltage for critical applications.
Permanent magnet efficiency – No brushes or field excitation losses.
Custom voltage & power ratings – Options from 12V to 400V DC.
Frameless OEM integration – Adapt our alternators to your design requirements.
Our products are designed with durability, performance, and efficiency in mind, ensuring they meet the needs of industries where reliability is non-negotiable.
The Advantages of Permanent Magnet DC Alternators
Switching to permanent magnet DC alternators comes with significant benefits:
- Higher efficiency – More of the input energy is converted into usable power.
- Compact size – Easier to integrate into tight spaces.
- Low maintenance – No brushes to wear out.
- Improved reliability – Fewer moving parts mean less chance of failure.
- Cleaner output – Reduced electrical noise for sensitive electronics.
Custom Solutions for Every Industry
Every application is different, which is why we work closely with customers to design the perfect alternator system. Whether you need a:
48V regulated output for a hybrid bus,
Low-speed PTO alternator for agricultural pumps,
Frameless compact alternator for an aerospace system,
we can provide a solution that’s efficient, compact, and reliable.
Our engineers have extensive experience in OEM integration, making sure the alternator fits perfectly into your mechanical and electrical system without unnecessary weight or space usage.