Avetlink AK Sine Wave Controller for Quieter, Smoother Riding
Square wave control can cause motor noise and jerky acceleration, reducing ride comfort and increasing wear.
The Avetlink AK brushless motor controller uses SVPWM—space vector pulse-width modulation—to deliver smooth sine wave motor control. It automatically recognizes 48V, 60V, and 72V battery systems.
The supplied description reports motor noise below 45 dB. A logistics-company reference case also reports:
- 40% lower motor temperature rise.
- 18% longer driving range.
The dual-drive version supports compatible vehicles that need coordinated control of two motors, including demanding delivery applications.
Core Features
- 32-bit DSP processor: Provides precise sine wave motor control.
- Automatic voltage detection: Supports 48V / 60V / 72V systems without manual voltage selection.
- Heat management: An aluminum housing and thermally conductive silicone help transfer heat.
- Water protection: The waterproof version has a stated IP67 protection rating.
Installation and Maintenance Tips
1. Leave enough airflow around the controller’s cooling surfaces.
2. Do not direct a high-pressure water jet at the connectors.
3. Check electrical connections regularly for looseness or damage.

Frequently Asked Questions
Q1: Does it support two motors?
The AK dual-drive version supports coordinated control of the main and auxiliary motors, with reported synchronization timing of 0.1 ms.

Q2: What protection tests are listed?
The waterproof version reportedly passed a 72-hour salt-spray test and an immersion test at 1 metre depth. The immersion duration is not specified; the 72-hour figure applies to the salt-spray test.

Q3: Can it control high-speed motors?
The stated maximum supported motor speed is 6,000 rpm, allowing use in compatible electric scooter applications.

Q4: How does it protect against overheating?
NTC temperature sensing monitors heat. When the temperature exceeds 85°C, the controller progressively reduces current to help protect the MOSFETs from overheating.

Q5: What after-sales support is listed?
The original terms specify a 24-month warranty and remote technical support with a two-hour response. Confirm the applicable Avetlink terms before ordering.
Reference Fleet Results
The supplied text describes a shared e-bike operator in Shenzhen using 2,000 controllers over six months. Its reported results were:
- 0.35% controller failure rate.
- 82% fewer user complaints about abnormal motor noise.
The source also lists premium shared e-bikes and delivery vehicles as applications. These reference results illustrate the intended benefits of quieter operation, smoother power delivery, and improved reliability; they are not independently verified Avetlink results.

Power	1200W–1500W
Voltage	48V / 60V / 72V
Undervoltage	41V / 51V / 61V
Accelerator Voltage	0.8V–4.3V
Maximum Current	50A–60A
Wire Diameter	Terminal
illumination	4 indicator lights
color	customizable
Place of Origin	China