HVAC & Compressor Controllers for Air Conditioning & Cooling Systems

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AC Induction Compressor Drives PMSM / BLDC Compressor Drives IEC 61800 Aligned Designs

Overview

We design and supply motor controllers for compressor-based HVAC systems – from room and packaged air conditioners to mobile and DC-powered cooling. Versa Drives’ compressor controllers cover both AC induction compressors and high-efficiency PMSM / BLDC compressors, with sensorless control, built-in protections and compliance to IEC 61800 standards.

For OEMs, these platforms can be adapted for new capacities, voltage ranges and control interfaces without starting from a blank sheet every time.

Key Solution Areas

  • Residential and light-commercial air conditioners (fixed and inverter-type)
  • Compact DC compressors for mobile / off-grid HVAC
  • Telecom, cabin and cold-box cooling using 12 / 24 / 48 V DC compressors
  • Custom HVAC cooling blocks where only the compressor and controller are supplied

Platform Capabilities – At a Glance

Motor types

  • AC induction compressors (V/F control)
  • 3-phase PMSM / BLDC compressors (sensorless vector control)

Power range

  • ~0.5 kW to ~1.8 kW (extendable with platform customisation)

Supply options

  • Single-phase 168–264 V AC (for AC compressors)
  • 12 / 24 / 48 V DC bus for PMSM / BLDC compressors

Control features

  • Sensorless vector control for PMSM / BLDC
  • Fixed and variable speed configurations
  • Analog speed command (0–5 V) and digital I/O options

Protection & reliability

  • Under-voltage, over-voltage, over-current, overload and over-temperature protection
  • Locked-rotor and low-speed detection where applicable
  • Designs aligned to IEC 61800-3 and IEC 61800-5-1, with IP44–IP54 options based on enclosure

Integration options

  • Thermistor inputs for compressor temperature
  • Relay outputs for condenser fan / blower control
  • Optional isolated serial communication (e.g., RS-232) for OEM diagnostics

Current Products on this Platform

1) AC Compressor Drive – 230 V AC

  • Single-phase 168–264 V AC input with three-phase compressor output.
  • Linear V/F control for 1.5–1.8 kW compressor motors.
  • Integrated protections (over-voltage, under-voltage, over-current, motor overload, over-temperature).
  • Thermistor inputs and relay outputs to coordinate compressor and blower operation.
  • Ideal for room and packaged AC OEMs needing a compact, ready-to-integrate compressor drive.
VIEW AC COMPRESSOR DRIVE – 230 V

Link placeholder: update to your actual “AC Compressor Drive – 230 V AC” product page URL.

2) DC Compressor Controllers – 12 / 24 / 48 V DC PMSM

  • 3-phase PMSM / BLDC compressor controllers for low-voltage DC systems.
  • Voltage options:
    • 12 V DC (10–16 V operating range, ~500 W PMSM compressor)
    • 24 V DC (20–30 V operating range, ~500 W PMSM compressor)
    • 48 V DC (37–57 V DC bus for BLDC / PMSM compressor drives)
  • Sensorless PMSM control with >90% drive efficiency for 12 V and 24 V variants.
  • Built-in protections: under-voltage, over-voltage, short circuit / over-current, overload, locked rotor, over-temperature.
  • IP44-rated designs suitable for harsh mobile environments (12 V and 24 V variants).
  • Suitable for mobile and off-grid HVAC, small cold rooms, vehicle cabin cooling and telecom cooling boxes.
VIEW DC COMPRESSOR CONTROLLERS – 12 / 24 / 48 V

Note: 12 V & 24 V page exists; 48 V can be part of this family or a separate page later.

Why OEMs Work with Versa Drives for HVAC & Compressors

  • Experience in both AC and DC compressor control, including PMSM / BLDC compressors.
  • Deep motor-control expertise – the same team that developed Superfan’s ultra-efficient BLDC platforms works on these controllers.
  • Ability to customise firmware (speed profiles, soft-start behaviour, protection logic) for your compressor and refrigerant system.
  • Proven designs aligned to IEC 61800-3 / 61800-5-1 with robust protections for demanding duty cycles.

Next Steps

Request HVAC / Compressor Controller Evaluation Share Your Compressor Specs for a Feasibility Check

Enquiry Note

Please share:

  • Intended application (AC type, mobile HVAC, telecom cooling, cold box, etc.)
  • Compressor type and rating (motor type, voltage, kW / HP)
  • Required control features (fixed / variable speed, I/O, communication needs)
  • Annual volume and expected launch timelines

Our engineering team will review and confirm whether one of our existing controllers fits your requirement or propose a customised variant on the same platform.