Compact High Current Low Voltage Generator

I need a generator designed for the purpose of generating electricity. The generator should be able to produce a power of at least 100w per second at a speed of 10-20rpm. The generator should primarily operate in a variable environment, which means it needs to be durable and weatherproof.

Key Requirements:
- The generator should be compact as possible. The size constraints are an important aspect of this project.
- The generator should be designed to generate the highest current (above 5A) and the least voltage possible (below 50V).
- The use of N50 grade neodymium magnets, with 14mm diameter, and 6.5mm height is mandatory.

Ideal Candidate:
- Experience in designing and building generators
- Knowledge of N50 grade neodymium magnets
- Ability to build a compact and efficient device
- Understanding of electrical engineering and principles of power generation
- Background in working with low voltage high current systems