# Electric motors and drives and Transformers and power electronics

Energy flows from transformers and power electronics to electric motors and drives; their prices have moved together.

Source page: https://www.materialinsights.org/links/electric-motors-and-drives-and-transformers-and-power-electronics/

[Electric motors and drives](https://www.materialinsights.org/energy/e_motors/) (energy) and [Transformers and power electronics](https://www.materialinsights.org/energy/e_power_electronics/) (energy): 2 relationships.

## How they are linked

### 1. Energy flow

*Physical flow · 9% of flow · Transformers and power electronics → Electric motors and drives*

Variable-speed drives control motor speed.

- **9%** of Transformers and power electronics's energy goes this way

### 2. Price link: drives

*Cost and price · Strong · Both ways*

Variable-speed drives and inverters control most modern motors, so the two are often sold together. Monthly moves correlate at 0.26 and yearly at 0.77, a common driver from electrical equipment costs and industrial investment.

- **0.26** monthly change correlation
- **0.77** 12-month change correlation
- **0.67** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.