Envitech Energy has gained an international reputation in control systems and automation applied to power generation, rail transportation and industrial processes.

Envitech Energy offers a broad line of products and services calling upon the design and the assembly of components in power electronics and computerized control. Its team has developed turnkey systems such as DC current feeders, power converters, controls for wind turbines and for small hydroelectric generators as well as tailored solutions for several industrial applications.

Envitech Energy will typically help Owners of remote power generation networks to stabilize their networks and to reduce their power costs. Envitech Energy is an integrator of a variety of power generation sources with its automated systems in energy management and its power electronics.

Envitech Energy integrates control systems to achieve power cost reductions and to improve network stability.

Power converters and controllers for renewable energy systems

Dedicated to optimizing resources and ensuring energy efficiency, Envitech engineers have developed power converters and controllers specially adapted to renewable energy power systems. Envitech technology can offer the best system for the needs of an on-grid, an isolated-grid or an off grid system. Envitech mid-stage power conversion technology provides all the flexibility and advanced features that wind turbines and solar panels need. Combined with a diesel generator, our power controllers give the wind and solar power systems the power stability and predictability for the most demanding applications. It also optimizes diesel generator usage according to your power demand and other available sources (wind and solar).

Envitech power converters and controllers can be applied in:

• wind energy systems, such as small wind turbines
• hydro turbines (for small hydro plants)
• solar panels
• hybrid wind/solar turbine/diesel generator systems
• mines or other remote locations
• on-grid, isolated-grid or off-grid systems
• direct-drive turbines
• AC variable speed drives
• high-power inverters
• power generation systems
• renewable energy systems

Some of the custom-designed power converter and controller features Envitech has provided:

• Manage power from a few kW to over 500 kW
• High performance AC/DC/AC conversion
• DC power bus for easy interconnect of multiple power sources
• Battery bank DC/DC control system to improve power quality and availability
• Remote control
• In-service software updates
• Standard communication interface (RS232, RS485, Modbus, TCP/IP)
• Multiple I/O for acquisition and control of other equipment
• Open source operating system for cost effective support and maintenance

Vertical-axis Wind Turbine Controller

The challenge:

The challenge was to develop a turbine that adapts to wind speed and consequently optimizes power generation. Envitech developed an innovative commercial installation intended to serve as a model for future projects.

The solution:

To maximize power capture and make this energy grid-ready, Envitech designed a multi step power system controller to take the wind turbine energy and convert it into regulated AC power. To do this, Envitech customized a power controller that converts the turbine AC power in one mid-stage DC power that could connect other power sources to this common DC bus. Envitech then designed the system to reconvert the DC power into grid quality regulated AC power. The system can be expanded to incorporate a battery system that provides additional power regulation when power demand varies.

The Envitech results: Innovative energy efficiency.

After testing the prototype and completing development, Envitech provided the power converters and controllers for the first commercial installation at Pioneer Bluff, Ishpeming, Michigan, a government subsidized senior citizen apartment building. The new installation will provide more than half of Pioneer Bluff's energy needs. The Envitech team is proud to contribute its power converter and controller system to this innovative and energy efficiency initiative.